PENTAIR WHISPERFLO VS Variable Speed Pump User Guide

June 9, 2024
Pentair

PENTAIR WHISPERFLO VS Variable Speed Pump

IMPORTANT SAFETY INSTRUCTIONS

IMPORTANT NOTICE
This guide provides installation and operation instructions for this pump. Consult Pentair with any questions regarding this equipment.

Attention Installer: This guide contains important information about the installation, operation and safe use of this product. This information should be given to the owner and/or operator of this equipment after installation or left on or near the pump.

Attention User: This manual contains important information that will help you in operating and maintaining this product. Please retain it for future reference.

READ AND FOLLOW ALL INSTRUCTIONS SAVE THESE INSTRUCTIONS

  • This is the safety alert symbol. When you see this symbol on your system or in this manual, look for one of the following signal words and be alert to the potential for personal injury.
  • Warns about hazards that can cause death, serious personal injury, or major property damage if ignored.
  • Warns about hazards that may cause death, serious personal injury, or major property damage if ignored.
  • Warns about hazards that may or can cause minor personal injury or property damage if ignored.
  • Indicates special instructions not related to hazards.

Note

  • Carefully read and follow all safety instructions in this manual and on equipment. Keep safety labels in good condition; replace if missing or damaged.

When installing and using this electrical equipment, basic safety precautions should always be followed, include the following

DANGER
FAILURE TO FOLLOW ALL INSTRUCTIONS AND WARNINGS CAN RESULT IN SERIOUS BODILY INJURY OR DEATH. THIS PUMP SHOULD BE INSTALLED AND SERVICED ONLY BY A QUALIFIED POOL SERVICE PROFESSIONAL. INSTALLERS, POOL OPERATORS AND OWNERS MUST READ THESE WARNINGS AND ALL INSTRUCTIONS IN THE OWNER’S MANUAL BEFORE USING THIS PUMP. THESE WARNINGS AND THE OWNER’S MANUAL MUST BE LEFT WITH THE POOL OWNER.S

WARNING

  • Do not permit children to use this product.
  • RISK OF ELECTRICAL SHOCK. Connect only to a branch circuit protected by a ground-fault circuitinterrupter (GFCI). Contact a qualified electrician if you cannot verify that the circuit is protected by a GFCI.
  • This unit must be connected only to a supply circuit that is protected by a ground-fault circuit-interrupter (GFCI). Such a GFCI should be provided by the installer and should be tested on a routine basis. To test the GFCI, push the test button. The GFCI should interrupt power. Push the reset button. Power should be restored. If the GFCI fails to operate in this manner, the GFCI is defective. If the GFCI interrupts power to the pump without the test button being pushed, a ground current is flowing, indicating the possibility of an electric shock. Do not use this pump. Disconnect the pump and have the problem corrected by a qualified service representative before using.

CAUTION

  • This pump is for use with permanent swimming poolsand may also be used with hot tubs and spas if so marked. Do not use with storable pools. A permanently-installed pool is constructed in or on the ground or in a building such that it cannot be readily disassembled for storage. A storable pool is constructed so that it is capable of being readily disassembled for storage and reassembled to its original integrity.

General Warnings

  • Never open the inside of the drive or motor enclosure. There is a capacitor bank that holds a 230 VAC charge even when there is no power to the unit.
  • The pump is not submersible.
  • The pump is capable of high flow rates; use caution when installing and programming to limit pumps performance potential with old or questionable equipment.
  • Code requirements for electrical connection differ from country to country, state to state, as well as local municipalities. Install equipment in accordance with the National Electrical Code and all applicable local codes and ordinances.
  • Before servicing the pump; switch OFF power to the pump by disconnecting the main circuit to the pump.
  • This appliance is not intended for use by persons (including children) of reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.

DANGER

  • SUCTION ENTRAPMENT HAZARD: STAY OFF THE MAIN DRAIN AND AWAY FROM ALL SUCTION OUTLETS! THIS PUMP IS NOT EQUIPPED WITH SAFETY VACUUM RELEASE SYSTEM (SVRS) PROTECTION AND DOES NOT PROTECT AGAINST BODY OR LIMB ENTRAPMENTS, DISEMBOWELMENTS (WHEN A PERSON SITS ON A BROKEN OR UNCOVERED POOL DRAIN) OR HAIR ENTANGLEMENTS.PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-1

THIS PUMP PRODUCES HIGH LEVELS OF SUCTION AND CREATES A STRONG VACUUM AT THE MAIN DRAIN AT THE BOTTOM OF THE BODY OF WATER. THIS SUCTION IS SO STRONG THAT IT CAN TRAP ADULTS OR CHILDREN UNDER WATER IF THEY COME IN CLOSE PROXIMITY TO A DRAIN OR A LOOSE OR BROKEN DRAIN COVER OR GRATE. THE USE OF UNAPPROVED COVERS OR ALLOWING USE OF THE POOL OR SPA WHEN COVERS ARE MISSING, CRACKED OR BROKEN CAN RESULT IN BODY OR LIMB ENTRAPMENT, HAIR ENTANGLEMENT, BODY ENTRAPMENT, EVISCERATION AND/OR DEATH.

The suction at a drain or outlet can cause:

  • Limb Entrapment: When a limb is sucked or inserted into an opening resulting in a mechanical bind or swelling. This hazard is present when a drain cover is missing, broken, loose, cracked or not properly secured.
  • Hair Entanglement: When the hair tangles or knots in the drain cover, trapping the swimmer underwater. This hazard is present when the flow rating of the cover is too small for the pump or pumps.
  • Body Entrapment: When a portion of the body is held against the drain cover trapping the swimmer underwater. This hazard is present when the drain cover is missing, broken or the cover flow rating is not high enough for the pump or pumps.
  • Evisceration/Disembowelment: When a person sits on an open pool (particularly a child wading pool) or spa outlet and suction is applied directly to the intestines, causing severe intestinal damage. This hazard is present when the drain cover is missing, loose, cracked, or not properly secured.
  • Mechanical Entrapment: When jewelry, swimsuit, hair decorations, finger, toe or knuckle is caught in an opening of an outlet or drain cover. This hazard is present when the drain cover is missing, broken, loose, cracked, or not properly secured.

NOTE: ALL SUCTION PLUMBING MUST BE INSTALLED IN ACCORDANCE WITH THE LATEST NATIONAL AND LOCAL CODES, STANDARDS AND GUIDELINES.

WARNING

TO MINIMIZE THE RISK OF INJURY DUE TO SUCTION ENTRAPMENT HAZARD:

  • A properly installed and secured ANSI/ASME A112.19.8 approved anti-entrapment suction cover must be used for each drain.
  • Each suction cover must be installed at least three (3’) feet apart, as measured from the nearest point to nearest point.
  • Regularly inspect all covers for cracks, damage and advanced weathering.
  • If a cover becomes loose, cracked, damaged, broken or is missing, replace with an appropriate certified cover.
  • Replace drain covers as necessary. Drain covers deteriorate over time due to exposure to sunlight and weather.
  • Avoid getting hair, limbs or body in close proximity to any suction cover, pool drain or outlet.
  • Disable suction outlets or reconfigure into return inlets.

The pump can produce high levels of suction within the suction side of the plumbing system. These high levels of suction can pose a risk if a person comes within the close proximity of the suction openings. A person can be seriously injured by this high level of vacuum or may become trapped and drown. It is absolutely critical that the suction plumbing be installed in accordance with the latest national and local codes for swimming pools. A clearly labeled emergency shut-off switch for the pump must be in an easily accessible, obvious place. Make sure users know where it is and how to use it in case of emergency.

The Virginia Graeme Baker (VGB) Pool and Spa Safety Act creates new requirements for owners and operators of commercial swimming pools and spas. Commercial pools or spas constructed on or after December 19, 2008, shall utilize: (A) A multiple main drain system without isolation capability with suction outlet covers that meet ASME/ANSI A112.19.8a Suction Fittings for Use in Swimming Pools, Wading Pools, Spas, and Hot Tubs and either:

  1. A safety vacuum release system (SVRS) meeting ASME/ANSI A112.19.17 Manufactured Safety Vacuum Release systems (SVRS) for Residential and Commercial Swimming Pool, Spa, Hot Tub, and Wading Pool Suction Systems and/or ASTM F2387 Standard Specification for Manufactured Safety Vacuum Release Systems (SVRS) for Swimming pools, Spas and Hot Tubs or
  2. A properly designed and tested suction-limiting vent system or
  3. An automatic pump shut-off system.

Commercial pools and spas constructed prior to December 19, 2008, with a single submerged suction outlet shall use a suction outlet cover that meets ASME/ANSI A112.19.8a and either:

  • A SVRS meeting ASME/ANSI A112.19.17 and/or ASTM F2387, or
  • A properly designed and tested suction-limiting vent system, or
  • An automatic pump shut-off system, or
  • Disabled submerged outlets, or
  • Suction outlets shall be reconfigured into return inlets.

CAUTION

For Installation of Electrical Controls at Equipment Pad (ON/OFF Switches, Timers and Automation Load Center) Install all electrical controls at equipment pad, such as on/off switches, timers, and control systems, etc. to allow the operation (startup, shut-down, or servicing) of any pump or filter so the user does not place any portion of his/her body over or near the pump strainer lid, filter lid or valve closures. This installation should allow the user enough space to stand clear of the filter and pump during system start- up, shut down or servicing of the system filter.

DANGER

HAZARDOUS PRESSURE: STAND CLEAR OF PUMP AND FILTER DURING START UP. Circulation systems operate under high pressure. When any part of the circulating system (i.e. locking ring, pump, filter, valves, etc.) is serviced, air can enter the system and become pressurized. Pressurized air can cause the pump housing cover, filter lid, and valves to violently separate which can result in severe personal injury or death. Filter tank lid and strainer cover must be properly secured to prevent violent separation. Stand clear of all circulation system equipment when turning on or starting up pump. Before servicing equipment, make note of the filter pressure. Be sure that all controls are set to ensure the system cannot inadvertently start during service. Turn off all power to the pump.

IMPORTANT: Place filter manual air relief valve in the open position and wait for all pressure in the system to be relieved. Before starting the system, fully open the manual air relief valve and place all system valves in the “open” position to allow water to flow freely from the tank and back to the tank. Stand clear of all equipment and start the pump.

IMPORTANT: Do not close filter manual air relief valve until all pressure has been discharged from the valve and a steady stream of water appears. Observe filter pressure gauge and be sure it is not higher than the pre- service condition.

General Installation Information

  • All work must be performed by a qualified service professional, and must conform to all national, state, and local codes.
  • Install to provide drainage of compartment for electrical components.
  • These instructions contain information for a variety of pump models and therefore some instructions may not apply to a specific model. All models are intended for use in swimming pool applications. The pump will function correctly only if it is properly sized to the specific application and properly installed.

WARNING

  • Pumps improperly sized or installed or used in applications other than for which the pump was intended can result in severe personal injury or death. These risks may include but not be limited to electric shock, fire, flooding, suction entrapment or severe injury or property damage caused by a structural failure of the pump or other system component.

Pumps and replacement motors that are single speed and one (1) Total HP or greater cannot be sold, offered for sale, or installed in a residential pool for filtration use in California, Title 20 CCR sections 1601-1609.

CUSTOMER SERVICE AND TECHNICAL SUPPORT

INTRODUCTION

WhisperFlo® VS and WhisperFlo® VST Variable Speed Pumps are designed to be your best choice for a variety of in-ground pools. The thick walled pump body, permanent magnet motor, and highly engineered hydraulics make this rugged and tested design perfect for any pool, spa, water feature, or fountain. All Pentair pumps incorporate innovative hydraulic engineering that has been refined for over 40 years. Compact, rugged, and easy to maintain, this pump will deliver years of reliable service.

Pump Features

  • Extremely quiet operation
  • 2 in. Plumbing for simple replacement
  • See-through strainer pot lid allows easy inspection of strainer basket
  • Self-priming for quick, easy start-up
  • WEF: 8.4 THP: 2.6

Motor Features

  • High-Efficiency Permanent Magnet Motor
  • 56 Square Flange
  • Totally Enclosed Fan Cooled (TEFC)

Drive Features
The pump features a premium efficiency variable frequency drive that provides flexibility in terms of motor speed and duration settings.

WARNING
This pump is for use with 115/208-230 Vrms nominal, and in pool pump applications ONLY. Connection to the wrong voltage, or use in other applications may cause damage to equipment or personal injury.

The pump’s drive controls the speed settings as well as run durations. The pump can operate at speeds ranging between 450 and 3450 RPM and will operate within the voltage range of 115-230 Vrms nominal at either 50 or 60Hz input frequency. The pump is intended to run at the lowest speeds needed to maintain a sanitary environment and, at the same time, minimize energy consumption. Factors such as pool size, the presence of additional water features, type of chemicals used to maintain sanitary conditions, and local environmental factors will impact optimal programming to maximize energy conservation. Determining the optimal settings and programming for your pool may require some trial-and-error.

  • Simple user interface
  • UV and rain-proof enclosure
  • Onboard time of day schedule
  • Adjustable priming mode
  • Programmable Quick Clean mode
  • Pump alarm display and retention
  • Accepts 115-230V, 50/60Hz input power
  • Auto power limiting protection circuit
  • 24hr. clock retention for power outages
  • Keypad lockout mode

External Control
This pump can be externally controlled via digital inputs using the RS-485 Automation Wiring Kit (P/N 356324z). See External Control via Digital Inputs, page 6. The pump can be externally controlled by most Pentair control systems via an RS-485 connection using the RS-485 Automation Wiring Kit (P/N 356324z). The pump address and other settings can be programmed from the pump’s keypad. See External Control via RS-485, page 5. When connected to external controls, the pump will prioritize commands as follows: RS-485 > Digital Inputs > Drive Programmed Schedule Refer to the control system manual for further details on how to connect and program your pump with your control system.

USING THE DRIVE KEYPAD

Before operating the pump for the first time, the pump’s internal clock and operational schedules must be programmed. Refer to Setting the Clock and Pump Address, page 8 and Programming Custom Schedules, page 9 for instructions regarding the programming of this pump for scheduled operation. The pump can be programmed and controlled from the drive keypad. Pump features and settings are also accessed using this keypad.

  • Note: Functionality may vary based on other active features such External Control Only Mode and/or Keypad Lockout.
  • Note: Always close the keypad cover after use. This will prevent damage to the keypad and other drive components.

Only press keypad buttons with your fingers. Using screwdrivers, pens or other tools to program the pump will damage the keypad. If power is connected to the pump motor, pressing any of the following buttons referred to in this section could result in the motor starting. Failure to recognize this could result in personal injury or damage to equipment.PENTAIR-WHISPERFLO-VS-Variable-Speed-
Pump-fig-2

  1. SPEED Buttons – Used to select a desired speed program. When the LED above a SPEED Button is illuminated that program has been selected or is currently running. A blinking LED indicates that an External Control has activated that program.
  2. External Control Only LED – Indicates whether the pump is in External Control mode. When LED is illuminated the drive-programmed schedules are disabled and only commands from digital inputs will be acted upon.
  3. Start/Stop LED – Indicates whether the pump is in a Start State. When illuminated the pump can be started at any time by external controls, drive-programmed schedules or manual inputs. When the pump is stopped and the LED is not illuminated, the pump is unable to run from any type of input.
  4. Start/Stop Button – Used to start and stop the pump. When the pump is stopped and the Start/Stop LED is not illuminated, the pump is unable to run from any input.
  5. Display Parameter LEDs – When illuminated, LED indicates the information being displayed on screen. A blinking LED indicates that the parameter is currently being edited.
  6. Display Button – Used to toggle between the different available display modes. This button is also used to set the clock, screen brightness and pump address.
  7. Quick Clean Button – Used to run the speed and duration programmed for Quick Clean. When the LED above the Quick Clean Button is illuminated a Quick Clean cycle is active.
  8. Power LED – When illuminated, LED indicates that there is live power being supplied to the pump.
  9. “+” and “-” Arrows – Used to make adjustments to the pump settings. The “+” arrow increases a value, while “-” decreases a value. Pressing and holding either arrow button will increase or decrease incremental changes faster.

Only a qualified plumbing professional should install the pump. Refer to IMPORTANT SAFETY INSTRUCTIONS on page i-ii for additional installation and safety information.

Location

  • Note: Do not install this pump within an outer enclosure or beneath the skirt of a hot tub or spa.
  • Note: Ensure that the pump is mechanically secured to the equipment pad.

ENSURE THE INSTALL LOCATION MEETS THE FOLLOWING REQUIREMENTS:

  1. Install the pump as close to the pool or spa as possible. To reduce friction loss and improve efficiency, use short, direct suction and return piping.
  2. Install a minimum of 5 ft. (1.5 m) from the inside wall of the pool and spa. Canadian installations require a minimum of 9.8 ft. (3 m) from the inside wall of the pool.
  3. Install the pump a minimum of 3 ft. (0.9 m) from the heater outlet.
  4. Do not install the pump more than 5 ft. (1.5 m) above the water level.
  5. Install the pump in a well ventilated location protected from excess moisture (i.e. rain gutter downspouts, sprinklers, etc.).
  6. Install the pump with a rear clearance of at least 3 in. (7.6 cm) so that the motor can be removed easily for maintenance and repair. See Figure 1.

Piping

  1. For improved pool plumbing, it is recommended to use a larger pipe size.
  2. Piping on the suction side of the pump should be the same or larger than the return line diameter.
  3. Plumbing on the suction side of the pump should be as short as possible.
  4. For most installations Pentair recommends installing a valve on both the pump suction and return lines so that the pump can be isolated during routine maintenance. However, we also recommend that a valve, elbow or tee installed in the suction line should be no closer to the front of the pump than five (5) times the suction line diameter. See Figure 2.
  • Example: A 2.5 in. pipe requires a 12.5 in. (31.8 cm) straight run in front of the suction port. This will help the pump prime faster and last longer.
  • Note: DO NOT install 90° elbows directly into the suction or discharge ports.

Fittings and Valves

  1. Do not install 90° elbows directly into suction port.
  2. Flooded suction systems should have gate valves installed on suction and discharge pipes for maintenance, however, the suction gate valve should be no closer than five times the suction pipe diameter as described in this section.
  3. Use a check valve in the discharge line when using this pump for any application where there is significant height to the plumbing after the pump.
  4. Be sure to install check valves when plumbing in parallel with another pump. This helps prevent reverse rotation of the impeller and motor.

Electrical Installation

WARNING

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION. The pump must be installed by a licensed or certified electrician or a qualified service professional in accordance with the National Electrical Code and all applicable local codes and ordinances. Improper installation will create an electrical hazard which could result in death or serious injury to users, installers, or others due to electrical shock, and may also cause damage to property. Always disconnect power to the pump at the circuit breaker before servicing the pump. Failure to do so could result in death or serious injury to service people, pool users or others due to electric shock and/or property damage. Read all servicing instructions before working on the pump.

The pump accepts 115-230 V, 50 or 60 Hz single phase input power. Power Connections (Figure 3) are capable of handling up to 10 AWG solid or stranded wire.
The motor controller will automatically regulate the pump speed when running on lower voltage to keep current below 13.6 A. No wiring change is required to run the pump on 115 V nominal power, the same terminals are used as with high voltage wiring. The drive will operate on 2-Phase Line-Line-Ground electrical systems as well as Line-Neutral-Ground systems.

Wiring

  1. Ensure all electrical breakers and switches are turned off before wiring the motor.
    WARNING

  2. Ensure supply voltage meets the requirements listed on the motor nameplate.

  3. For wiring sizes and general requirements, follow specifications defined by the current National Electric Code and any local codes. When in doubt use a heavier gauge (larger diameter) wire.

  4. Ensure all electrical connections are clean and tight.

  5. Cut all wiring to the appropriate length so they do not overlap or touch when connected to terminals.

  6. ALWAYS reinstall the drive lid after electrical installation or before leaving the pump unsupervised during servicing. This will prevent rainwater, dust or other foreign matter from accumulating in the drive.

Note: Ensure wires are not pinched between the drive body and lid.

Grounding

  1. Permanently ground the motor using the Grounding Terminal (Figure 3) inside the drive wiring compartment. Refer to the current National Electrical Code and any local codes for wire size and type requirements. Ensure the ground wire is connected to an electrical service ground.
  2. ONLY connect the pump to a supply circuit protected by a ground-fault circuit-interrupter (GFCI) circuit breaker.

Note: Pentair offers a 2-Pole 20 Amp GFCI breaker (P/N PA220GF).

Bonding

  1. Using the Bonding Lug located on the side of the motor (Figure 3), bond the motor to all metal parts of the pool structure, electrical equipment, metal conduit and metal piping within 5 ft. (1.5 m) of the inside walls of the swimming pool, spa or hot tub in accordance with the current National Electrical Code and any local codes.
  2. Solid copper bonding conductor of 8 AWG or larger is required. For Canadian installations, 6 AWG or larger solid copper bonding conductor is required.

External Control via RS-485

These pumps can be controlled from certain Pentair control systems, via an RS-485 signal, when paired with the RS-485 Automation Wiring Kit (P/N 356324z).

  • Note: IntelliConnect Control and Monitoring Systems can NOT externally control this pump via RS-485. The pump will need to be connected via digital inputs. Refer to External Control via Digital Inputs on page 6.
  • Note: If the pump is manually stopped using the Start/Stop button, the pump will not run until the Start/Stop button is pressed. If the Start/Stop LED is illuminated, the pump is active and can be controlled externally.

Only the GREEN and YELLOW wires will be used to connect the pump to external controls via RS-485. See Figure 4.

Control System Pump Settings

Pump Type: Variable Speed (VS) Control systems with older firmware may require the pump be designated “IntelliFlo VS”. This pump will not process control system commands if designated a Variable Flow (VF) or Variable Speed/Flow (VSF) pump.

Pump Address: 1 or 2 Ensure the assigned pump address matches the pump address in the control system. Refer Setting the Clock and Pump Address, page 8. Refer to the control system manual for more information on connecting and programming your pump.

TO WIRE FOR EXTERNAL CONTROL USING RS-485:.

  1. Route the communication cable from the Pump Com Port (Figure 5) to the control system wiring compartment.

  2. Ensure the cable reaches all necessary terminals and cut to the necessary length.

  3. Strip 3/4 in. (19 mm) of sheathing from the communication cable.

  4. Strip 1/2 in. (13 mm) of sheathing from the 24 AWG GREEN and YELLOW wires.

  5. Cut back and terminate unused wires according to local and national electrical codes.

  6. Connect YELLOW and GREEN wires to the control system as shown in Figure 4.

  7. Program the pump’s internal clock. Refer to Setting the Clock and Pump Address on page 8.

  8. Program SPEED 1 to a speed of 0 RPM and duration of 24 hours. Refer to Programming Custom Schedules on page 9.

  9. Disable priming at the pump. Priming duration and speeds will be controlled by the control system.
    Note: If priming is not disabled at the pump, priming will be continue to be controlled by the pump. Refer to Priming on page 11.

  10. Plug the communication cable into the Pump Com Port (Figure 5).

  11. Press the Start/Stop button to start the pump.

External Control via Digital Inputs

When paired with either the RS-485 Automation Wiring Kit (P/N 356324z) or Digital Input Wiring Kit (discontinued), the pump can be externally controlled by digital input signals.

Note: If the pump is manually stopped using the Start/Stop button, the pump will not run until the Start/Stop button is pressed. If the Start/Stop LED is illuminated, the pump is active and can be controlled externally. The communication cable provided with these kits features a watertight connection that plugs into the Pump Com Port (Figure 5 on page 5). The opposite end of the cable has either 6 or 8 wires defined in Table 1. A trigger signal is required to externally control the pump via digital inputs. This required output signal can to be provided in one of the following ways:

  • By the pump drive. Refer to Using the Pump’s Output Signal.
  • By an external low voltage signal. Refer to Using an External Input Signal on page 7.

Using the Pump’s Output Signal

  1. Route the communication cable from the Pump Com Port (Figure 5 on page 5) to the control system wiring compartment.
  2. Ensure the cable reaches all necessary terminals and cut to the necessary length.
  3. Strip 3/4 in. (19 mm) of sheathing from the communication cable.
  4. Strip 1/2 in. (13 mm) of sheathing from all 24 AWG wires.
  5. If using RS-485 Automation Wiring Kit (P/N 356324z): Wire communication cable to control system as shown in Figure 6A.
    Note: Unused wires should be cut off and terminated according to local and national electrical codes. If using Digital Input Wiring Kit (discontinued): Wire communication cable to control system as shown in Figure 6B.

Signal Description

|

Signal Range

| Wire Color
---|---|---
RS- 485

Kit

| Digital Input Kit
+5V Output for Digital Inputs| 0-20mA| Red| Red
RS-485 A| -7V to +12V| Yellow| –
RS-485 B| -7V to +12V| Green| –
SPEED 1 Digital Input| 0, 5-30V AC/DC| White| Green
SPEED 2 Digital Input| 0, 5-30V AC/DC| Blue| Yellow
SPEED 3 Digital Input| 0, 5-30V AC/DC| Orange| Orange
QUICK CLEAN Digital Input| 0, 5-30V AC/DC| Brown| Brown
Common Ground| 0V| Black| Black
6. Using the pump keypad, program the pump’s internal clock. Refer to Setting the Clock and Pump Address on page 8. 7. Using the pump keypad, disable priming. Refer to Priming on page 11. 8. When ready to start the pump, place the pump into External Control Only mode. Refer to External Control Only Mode on page 7. 9. Plug the communication cable into the Pump Com Port. 10. Press the Start/Stop button to start the pump.PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-7

Using an External Input Signal
When using an externally supplied low voltage signal for external control, input voltage must be within 5-30V AC/DC. The wiring kit’s RED wire is only intended to carry the +5V output signal from the drive and will NOT be used.

CAUTION
The +5V signal (RED wire) is output from the drive only and should never be wired to another power supply. Improper wiring will damage the drive.

The external output signal can be regulated by switches or relays to initiate a desired pump function. If multiple digital inputs are active, the priority is: QUICK CLEAN > SPEED 3 > SPEED 2 > SPEED 1.

TO WIRE FOR EXTERNAL CONTROL USING AN EXTERNAL INPUT SIGNAL:

  1. Route the communication cable from the Pump Com Port (Figure 5 on page 5) to the control system wiring compartment.

  2. Ensure the cable reaches all necessary terminals and cut to the necessary length.

  3. Strip 3/4 in. (19 mm) of sheathing from the communication cable.

  4. Strip 1/2 in. (13 mm) of sheathing from all 24 AWG wires.

  5. If using RS-485 Automation Wiring Kit (P/N 356324z): Wire communication cable to control system as shown in Figure 7A.
    Note: Unused wires should be cut off and terminated according to local and national electrical codes. If using Digital Input Wiring Kit (discontinued): Wire communication cable to control system as shown in Figure 7B.

  6. Using the pump keypad, program the pump’s internal clock. Refer to Setting the Clock and Pump Address on page 8.

  7. Using the pump keypad, disable priming. Refer to Priming on page 11.

  8. When ready to start the pump, place the pump into External Control Only mode. Refer to External Control Only Mode.

  9. Plug the communication cable into the Pump Com Port.

  10. Press the Start/Stop button to start the pump.PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-8

External Control Only Mode

External Control Only mode will only allow the pump to run from external controls/inputs. When this mode is active the programmed pump schedule is deactivated, and user speed requests from the keypad will not be accepted. If the pump is stopped a user can still program the speeds for all four SPEED buttons.

Note: The following steps are required if controlling the pump via digital inputs, but optional if controlling via RS-485. The pump will prioritize RS-485 commands over digital input commands.

TO ENABLE/DISABLE EXTERNAL CONTROL ONLY MODE:

  1. If the pump is running or Start/Stop LED is illuminated, press the Start/Stop button to stop the pump.
  2. Press and hold the Start/Stop button for 10 seconds to enable/disable External Control Only mode. The Ext. Control Only LED will illuminate if enabled. See Figure 8.
  3. Press the Start/Stop button to start the pump.

OPERATION

Before operating the pump for the first time, the pump’s internal clock and operational schedules must be programmed by following the steps in this manual. Refer to Setting the Clock and Pump Address below and Programming Custom Schedules on page 9, for instructions regarding the programming of this pump for scheduled operation.

Setting the Clock and Pump Address
When power is first connected to the pump the clock will blink to indicate that is has not been set. Custom schedules are based on this clock setting, so the clock must be set first.

  1. Press and hold Display for 3 seconds.

  2. Use “+” and “-” to choose between a 12 or 24 hour time format.

  3. Press Display to advance.

  4. Use “+” and “-” to program the current time.
    Note: In the 12 hour time format AM/PM will display in the bottom right corner.

  5. Press Display to advance.

  6. Use “+” and “-” to adjust the screen backlight brightness.

  7. Press Display to advance.

  8. If controlling pump via RS-485: Use “+” and “-” to assign one of two pump addresses, then press Display to exit the menu. If controlling the pump via digital inputs or from the drive: Press Display twice to exit the menu.

During a power outage, the drive will retain the clock setting for as long as 24 hours. If the power is out longer than 24 hours, the clock will have to be reset. If the drive has lost the user set time, the clock will continuously blink until the time is reset.

Note: When power is returned to the pump after a prolonged outage (24+ hours) the clock will automatically set itself to the Speed 1 start time, blink and advance. The pump will also run the associated schedule from that start time.

Using the Default Schedule
The default schedule is designed to provide sufficient daily turnover for a typical pool. See Table 2 for default schedule.

The default schedule will operate as follows:

  1. SPEED 1 will begin at 8:00am and run at 3000 RPM for a duration of 2 hours.
  2. SPEED 2 will begin immediately after SPEED 1 completes. Default SPEED 2 runs at 1400 RPM for 10 hours.
  3. SPEED 3 will begin immediately after SPEED 2 completes. Default SPEED 3 runs at 2200 RPM for 2 hours.
  4. After SPEED 3 runtime has ended, the pump will enter a stationary/paused state for the next 10 hours.
  5. The pump will restart at 8:00am the next morning and cycle through the default schedule again. The pump will continue to run in this in this manner until a custom schedule is programmed.

Note: The Start/Stop button must be pressed, and the Start/Stop LED illuminated, for the pump to run.

Programming Custom Schedules
To customize your pump’s schedule, the pump must be stopped. Ensure that the Start/Stop LED is not illuminated. The clock must be set before programming a custom schedule, unless externally controlling the pump through digital inputs. When controlling the pump by digital inputs, schedules will be based on the automation system’s clock. When programming, the LED next to the parameter you are editing will blink.

  • “Speed” – Run Speed
  • “Time” – Start Time
  • “Duration” – Run Time

TO PROGRAM A CUSTOM SCHEDULE:

  1. Press Start/Stop to stop the pump.

  2. Press “1”. The SPEED 1 LED and the “Speed” parameter LED will blink while editing. See Figure 9.

  3. Use “+” and “-” to adjust the speed in RPM for SPEED 1.
    Note: If operating the pump with external controls, program SPEED 1 speed to 0 RPM.

  4. Press “1”. The SPEED 1 start time will display. The “Time” parameter LED will begin to blink. See Figure 10.

  5. Use “+” and “-” to adjust the SPEED 1 start time.

  6. Press “1”. SPEED 1 duration will display. The “Duration” parameter LED will begin to blink. See Figure 11.

  7. Use “+” and “-” to adjust the SPEED 1 duration in hours and minutes.
    Note: If operating the pump with external controls, program SPEED 1 duration to 24 hours.

  8. SPEED 1 is now successfully programmed.
    Note: Pressing “1” will continue to cycle through these parameters, but changes are immediately saved as they are adjusted.

  9. Press “2”. The SPEED 2 LED and “Speed” parameter LED will blink while editing.

  10. Use “+” and “-” to adjust the speed in RPM for SPEED 2.

  11. Press “2”. The SPEED 2 duration will display.
    Note: SPEEDs 2 and 3 do not have a start time, as they begin immediately after the previous SPEED finishes.

  12. Use “+” and “-” to adjust the duration of SPEED 2 in hours and minutes.

  13. Repeat steps 9-12 to program SPEED 3 and QUICK CLEAN.

Note: The duration allowed for SPEED 3 will be limited to the remaining time in a 24 hour day. Any time in the 24 hour day not programmed into SPEEDs 1-3, the pump will remain in a stationary state. [SPEED 1 + SPEED 2 + SPEED 3 < 24 Hours] 14. Press Start/Stop and ensure the Start/Stop LED is illuminated. The pump is now active and will run the programmed schedule.

Note: If the pump was stopped using the Start/ Stop button, the pump will not run until the Start/ Stop button is pressed again. If the Start/Stop LED is illuminated, the pump is on and will run the programmed schedule.

Note: If you do not want the pump to run during a specific time of the day, any of the SPEEDs can be programmed to 0 RPM. This ensures the pump will not run during the SPEED duration.

Speed Priorities (Non-External Control)
For schedule duration settings, SPEEDs are prioritized as follows: SPEED 1 -> SPEED 2 -> SPEED 3. SPEED 1 is the highest priority, while SPEED 3 is the lowest.

The drive will not allow a user to program a schedule of more than 24 hours. When the 24th hour of duration is programmed it will take time from the lower priority speeds in order to add them to the SPEED currently being adjusted.

Example:
Starting Schedule (Before Adjustment)

  • SPEED 1 duration = 20 hours
  • SPEED 2 duration = 2 hours
  • SPEED 3 duration = 2 hours

If the user reprograms SPEED 1 to run for 23 hours, SPEED 2 (lower priority speed) will automatically adjust to a 1 hour duration and SPEED 3 (lowest priority speed) will adjust to a 0 hour duration.

End Schedule (After Adjustment)

  • SPEED 1 duration = 23 hours
  • SPEED 2 duration = 1 hour
  • SPEED 3 duration = 0 hours

Operating the Pump While Running

CAUTION
If power is connected to the pump, pressing any of the following buttons referred to in this section could result in the motor starting. Failure to recognize this could result in personal injury or damage to equipment.

Pressing the Display button will cycle through the current parameters:

  • Speed — current run speed
  • Time — current time of day
  • Duration — amount of time remaining at current run speed
  • Watts — watts currently being consumed

Pressing any of the SPEED Buttons (“1”, “2”, “3” or Quick Clean) while the pump is running will act as a temporary override. The pump will run the speed and duration programmed for that button. Once completed the pump will return to the appropriate point in the programmed schedule.

Note: If schedule speeds are adjusted while the pump is running, the pump will run the entered speed for the rest of the program’s duration, but will not save the adjustments.

Exception: Adjustments to QUICK CLEAN Speed and Duration are always immediately saved.

Quick Clean
During a Quick Clean cycle, pressing the “+” or “-” will change the speed accordingly. Pressing the Quick Clean button again within 10 seconds of pressing “+” or “-” will allow you to adjust Quick Clean duration. These changes will be saved immediately and are the new defaults for Quick Clean. Pressing the Quick Clean button again will cycle through the two Quick Clean settings. The pump will exit editing mode if no additional buttons are pressed within 10 seconds.

Note: While in keypad lockout mode the quick clean feature is enabled and the “+” and “-” buttons can be used to make temporary changes.

A Quick Clean cycle can be stopped early by pressing and holding the Quick Clean button for 3 seconds. The pump will return to the appropriate point in the programmed schedule. When a connected control system is in Service Mode, a pump connected via RS-485 can still run its Quick Clean program. Once Service Mode is enabled the pump display will flash between “SEr” and the current Quick Clean speed (Figure 12). Once Service Mode is disabled the pump will resume normal operation.

Note: Quick Clean speed will read 0 when Quick Clean is off.PENTAIR-
WHISPERFLO-VS-Variable-Speed-Pump-fig-14

Priming

This pump is shipped with Priming mode ENABLED. The pump will ramp up to 3450 RPM when the pump is initially started. Before turning the pump ON:

  1. Open filter air relief valve.
  2. Open necessary valves.
  3. Ensure return line is completely open and clear of any blockages.
  4. Ensure pump is filled with water.
  5. Stand clear of the filter or other pressurized vessels.

WARNING
DO NOT run the pump dry, the shaft seal will be damaged and the pump will start leaking. If this occurs, the damaged seal must be replaced. ALWAYS maintain proper water level in your pool (half way up skimmer opening). If the water level falls below the skimmer opening, the pump will draw air through the skimmer, losing the prime and causing the pump to run dry, resulting in a damaged seal. Continued operation in this manner could cause a loss of pressure, resulting in damage to the pump body, impeller and seal and may cause property and personal injury.

Priming will automatically run when the pump is started, except when running a Quick Clean cycle. Default Priming Speed is 3450 RPM, and will last for 5 minutes. The drive will display and cycle through “Prl — Priming Speed, Prl — Remaining Time”. If externally controlling the pump via an RS-485 connection and priming is enabled at both the pump and control system: Both priming timers will start simultaneously, but the pump priming settings will have priority over the control system’s.

Note: After the pump’s priming cycle has completed, if there is time remaining on the control system’s priming timer the pump will run the control system priming speed until the timer expires.

During the priming sequence, priming speed can be adjusted between 1700 and 3450 RPM using the “+” and “-” arrows. Setting the priming speed below 1700 RPM, will disable priming and the pump will immediately begin to run the scheduled speed. When priming is disabled and the pump is started, the screen will display, “Prl — OFF” for 10 seconds while running the scheduled speed (see Figure 11). This 10 second delay allows time to enable priming by pressing “+”. If priming is re-enabled, the pump will transition from the scheduled speed to 1700 RPM. If necessary, priming speed can then be increased 1700 RPM by pressing “+”. The 5 minute priming countdown timer starts when priming is first engaged. Priming time can change based on local environmental conditions such as water temperature, atmospheric pressure, and your pool’s water level. All of these things should be taken into consideration when setting the priming speed. Test and verify priming speeds more than once, letting the water drain from the system in between each test.

Note: To prevent air from entering the system, the pump strainer pot should always be filled with water up to the bottom of the suction port .PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-15

Programming Quick Clean

The pump is equipped with a Quick Clean feature, which can be engaged to temporarily run at higher or lower speeds ranging from 450 to 3450 RPM. At the end of a Quick Clean cycle, the pump will automatically return to the appropriate point in its programmed schedule.

Note: Pressing and holding Quick Clean for more than 3 seconds will cancel a Quick Clean cycle. The pump will then return to the appropriate point in its programmed schedule.

TO PROGRAM QUICK CLEAN:

  1. Press Start/Stop to stop the pump.
  2. Press Quick Clean. The Quick Clean LED and “Speed” parameter LED will blink while editing. See Figure 14.
  3. Use “+” and “-” to adjust the Quick Clean speed in RPM.
  4. Press Quick Clean. The Quick Clean duration will display. The “Duration” parameter LED will blink while editing. See Figure 15.
  5. Use “+” and “-” to adjust the Quick Clean duration in hours and minutes.
    Note: It is recommended that you do not set the Quick Clean duration to 0 HRS. Setting the Quick Clean duration to 0 HRS will prevent edits to the duration setting while the motor is running. The motor will need to be stopped.
    Note: Quick Clean duration does not affect the start or stop times of the 24-hour schedule. For example, if Quick Clean runs during a period overlapping with a later part of SPEED 1 and an early part of SPEED 2, the start time of SPEED 3 is not affected.

Keypad Lockout

CAUTION

Keypad lockout will not prevent the motor from being stopped by pressing the Start/ Stop button. If the pump is stopped with the Start/Stop button during Keypad Lockout, it can not be restarted until the keypad is unlocked.

The pump features a Keypad Lockout mode. Keypad Lockout is intended to prevent unwanted changes to pump settings. When locked, the pump will only respond to:

  • Pressing Display to cycle through current pump information.

  • Pressing Start/Stop to stop the pump and/or enable/disable external control.
    Note: The pump can not be manually restarted using the Start/Stop button until the keypad is unlocked.

  • Pressing Quick Clean to start a quick clean cycle or using the “+” or “-” buttons to make temporary adjustments to quick clean settings.

  • Any drive-programmed or external control schedules, as long as the Start/Stop LED is illuminated.

TO LOCK/UNLOCK THE PUMP:

  1. Press and hold the “1” and Quick Clean buttons for at least 3 seconds.
  2. “Loc On” or “Loc Off” will scroll across the screen if succesful.

Factory Reset

The drive can be reset to factory settings if necessary. A Factory Reset will erase all programmed settings and schedules, except for the time of day. Be sure that it is necessary before performing a Factory Reset, as the results are immediate.

Note: Factory Reset can not be performed when in Keypad Lockout mode.

TO PERFORM A FACTORY RESET:

  1. If the pump is running, press the Start/Stop button to stop the pump.
  2. Record all of the custom schedule settings in Table 3. You can find these settings by pressing the “1”, “2”, “3”, and Quick Clean buttons and cycling through all the screens.
  3. Record the programmed Priming Speed in Table 3.
  4. Press and hold “1”, “2”, “3” and Quick Clean for 3 seconds.
  5. “FAct rSt” will display if factory reset is successful. See Figure 16.PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-18
  6. Reprogram the schedule and priming speed as described in the previous sections. The pump must be turned back on with the Start/Stop button before it will run again. The pump will run the programmed schedule upon initial start-up.PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-19

MAINTENANCE

WARNING

  • DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer pot. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may cause serious personal injury. In order to avoid the possibility of personal injury, make sure the suction and discharge valves are open and strainer pot temperature is cool to touch, then open with extreme caution.

  • Always disconnect power to the pump at the circuit breaker and disconnect the digital input cable before servicing the pump. Failure to do so could
    result in death or serious injury to service people, users or others due to electric shock. Read all servicing instructions before working on the pump.

  • To prevent damage to the pump and for proper operation of the system, clean pump strainer and skimmer baskets regularly.

Cleaning the Pump Strainer Basket
The strainer pot is located at the front of the pump and houses the pump strainer basket. The strainer basket can be viewed through the strainer pot lid and should be visually inspected at least once a week. Regularly emptying and cleaning the strainer basket will lead to higher filter and heater efficiency and prevent unnecessary stress on the pump motor.

TO CLEAN THE STRAINER BASKET:

  1. Press Start/Stop to stop the pump and shut off all electrical power to the pump at the circuit breaker.

  2. Open the filter air relief valve and relieve all pressure from the filtration system.

  3. Turn the strainer pot lid counter-clockwise and remove it from the pump.

  4. Remove debris and rinse out the basket. Replace the basket if it is cracked or damaged.

  5. Place the basket into the strainer pot. Ensure the notch in the bottom of the basket is aligned with the rib in the bottom of the strainer pot.

  6. Fill the strainer pot with water up to the inlet port.

  7. Clean the lid O-ring and sealing surface of the strainer pot.
    Note: It is important to keep the lid O-ring clean and well lubricated.

  8. Reinstall the lid by placing it onto the strainer pot and tightening clockwise until the lid handles are horizontal.
    Note: Ensure the lid O-ring is properly placed and is not being pinched between the lid and strainer pot.
    Note: Ensure that the side of the lid marked “Front” is positioned at the front of the pump.

  9. Open the filter air relief valve and stand clear of the filter.

  10. Reestablish electrical power to the pump at the circuit breaker and start the pump.

  11. When a steady stream of water flows from the filter air relief valve, close the valve.

WARNING

THIS SYSTEM OPERATES UNDER HIGH PRESSURE. When any part of the circulating system is serviced, air can enter the system and become pressurized. Pressurized air can cause the lid to separate which can result in serious injury, death, or property damage. To avoid this potential hazard, follow above instructions.

Motor Care

Protect from heat

  1. Shade the motor from the sun.
  2. Any enclosure must be well ventilated to prevent overheating.
  3. Provide ample cross ventilation.

Protect against dirt

  1. Protect from any foreign matter.
  2. Do not store (or spill) chemicals on or near the motor.
  3. Avoid sweeping or stirring up dust near the motor while it is operating.
  4. If the motor has been damaged by dirt it may void the motor warranty.
  5. Clean the lid, O-ring, and sealing surface of the strainer pot regularly.

Protect against moisture

  1. Protect from splashing or sprayed water.
  2. Protect from extreme weather.
  3. If motor internals have become wet – let them dry before operating. Do not allow the pump to operate if it has been flooded.
  4. If the motor has been damaged by water it may void the motor warranty.

Refer to the Motor/Hydraulics Assembly Diagram, on the next page, for a parts breakdown of the pump.

WARNING

  • Always disconnect power to the pump at the circuit breaker before servicing the pump. Failure to do so could result in death or serious injury to service people, users or others due to electric shock. Read all servicing instructions before servicing the pump.
  • DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer pot. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may cause serious personal injury. In order to avoid the possibility of personal injury, make sure the suction and discharge valves are open and strainer pot temperature is cool to touch, then open with extreme caution.

Pump Disassembly

TOOLS REQUIRED

  • 1/4 in. hex key wrench
  • 3/32 in. hex-head wrench or socket
  • 9/16 in. open-end wrench or socket
  • Adjustable wrench
  • 2 Phillips screwdriver

  • Flat blade screwdriver

TO DISASSEMBLE THE PUMP:

  1. Press Start/Stop to stop the pump and disconnect all power to the pump at the circuit breaker.

  2. isconnect any digital inputs or communication cables from the pump (if connected).

  3. Close all valves in suction and discharge lines.

  4. Relieve all system pressure at the filter’s air relief valve.

  5. Remove both drain plugs from the bottom of the strainer pot.

  6. Using a 9/16 in. open-end wrench/socket and an adjustable wrench, remove the two strainer pot through-bolts and nuts securing the motor/hydraulics assembly to the strainer pot.

  7. Using a 9/16 in. open-end wrench or socket, remove the four remaining strainer pot bolts.

  8. GENTLY separate the motor/hydraulics assembly from the strainer pot.

  9. Using a 3/32 in. hex-head wrench, remove the
    two screws securing the diffuser to the seal plate. Remove the diffuser.

  10. Using a 1/4 in. hex-head wrench, hold the motor shaft in place at the rear of the motor. This will prevent the motor shaft from spinning while removing the impeller and impeller screw.

  11. Continue to hold the motor shaft in place. Remove the impeller screw and washer clockwise using a #2 Phillips screwdriver.

  12. Remove the impeller counter-clockwise by hand.

  13. Using a 9/16 in. wrench, remove the four (4) bolts securing the seal plate to the motor.

  14. Remove the seal plate from the motor/drive assembly.

  15. If replacing the shaft seal, continue to Shaft Seal Replacement on page 17. Otherwise, continue to Pump Reassembly when necessary.

Pump Reassembly

  1. Place the seal plate onto the motor assembly, ensuring the side marked “UP” is at the top.

  2. Using a 9/16 in. wrench, reinstall the motor/sealplate Bolts in a criss-cross pattern the seal plate to the motor with the four motor bolts. Tighten to 70-80 in-lbs. (81-92 kg/cm).

  3. Using a 1/4 in. hex-head wrench, hold the motor shaft in place at the rear of the motor. This will prevent the motor shaft from spinning while reinstalling the impeller and impeller screw.

  4. Continue to hold the motor shaft in place and reinstall the impeller onto the motor shaft clockwise hand tight.

  5. Continue to hold the motor shaft in place and reinstall the impeller screw and washer. Tighten to 25 in-lbs. (29 kg/cm).
    Note: The impeller screw is reverse threaded and tightens counter- clockwise.

  6. Reinstall the diffuser onto the seal plate using the two diffuser screws.

  7. Inspect the diffuser seal and seal plate gasket for damage and replace if necessary. Grease both before continuing.

  8. Using a 9/16 in. open-end wrench/socket and an adjustable wrench, secure the strainer pot to the motor/hydraulics assembly with the six strainer pot bolts and washers.
    Note: Do not tighten the two through-bolts until all six bolts are in place and finger tightened. Tighten in a criss-cross pattern to 110 in-lbs (127 kg/cm).
    Note: Ensure the seal plate gasket is not pinched between the strainer pot and motor assembly.

  9. Reinstall the both drain plugs into the bottom of the strainer pot.

  10. To restart the pump, continue to Restarting the Pump, page 18.

Motor/Hydraulics Assembly Diagram

PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-21

Shaft Seal Replacement
The Shaft Seal consists of two halves, a rotating spring seal and a fixed ceramic seal. The shaft seal may occasionally become damaged and require replacement.

CAUTION
Scratching, marring or otherwise damaging the polished shaft seal faces will cause the seal to leak. Always handle the shaft seal with care and thoroughly clean seal faces anytime they may have come in contact with dirt, grease, oils or other contaminants throughout installation.

  1. Ensure you have completed all pump disassembly instructions on the previous page.

  2. Using a small flat-blade screwdriver, gently pry the old Ceramic Seal out of the Impeller (Figure A).
    Note: The impeller seal cavity can be damaged if too much force is used when removing the Ceramic Seal.

  3. Place the Seal Plate face down on a flat surface and tap out the old Spring Seal with flat-blade screwdriver (Figure B).

  4. Remove the old Spring Seal from the seal plate with a pair of pliers.
    Note: When removing the spring seal the inner sleeve of the seal may stick to the seal plate. Ensure it is removed before installing the new spring seal.

  5. Thoroughly clean both seal cavities.

  6. Using a silicone sealant, lightly coat the metal flange of the new Spring Seal.

  7. Carbon Face outwards, position the new Spring Seal inside the seal cavity (Figure C).

  8. Place a clean piece of 1-1/4 in. PVC or deep-well socket over the Spring Seal face and gently tap it into the seal plate.

  9. Using a clean cloth, thoroughly clean the seal face.

  10. Using water, lightly lubricate the outside rubber surface of the new ceramic seal.

  11. White Face outwards, firmly press the ceramic seal into the impeller with your thumbs.

  12. Using a clean cloth, thoroughly clean the seal face.

  13. Reassemble the pump according to the instructions given in Pump Reassembly, page 16.PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-22

Restarting the Pump
If pump is installed below the water level of the pool, close return and suction lines prior to opening the strainer pot on pump. Make sure to re-open valves prior to operating.

  • DO NOT run the pump dry. The shaft seal will be damaged and require replacement. ALWAYS maintain proper water level in your pool (half way up the skimmer opening). If the water level falls below the skimmer opening, the pump will draw air through the skimmer, lose prime and cause the pump to run dry. Continued operation in this manner could cause a loss of pressure, damage the pump and/or property or personal injury.

TO PRIME THE PUMP:

  1. Press Start/Stop to stop the pump and disconnect all power to the pump at the circuit breaker.

  2. Relieve all pressure from the filtration system at the filter air relief valve.

  3. Remove the strainer pot lid by twisting it in a counterclockwise direction.

  4. Fill the strainer pot up to the inlet port with water.

  5. Place the lid onto the strainer pot, then turn clockwise to lock in place.
    Note: The lid is properly locked when the handles are nearly perpendicular to the pump body.

  6. Return power to the pump at the circuit breaker.

  7. Open the filter air relief valve.

  8. Stand clear of the filter and press the Start/Stop button to start the pump.

  9. Bleed air from the filter air relief valve until a steady stream of water appears, then close the relief valve.

  10. The pump will run a priming cycle and, if successful, begin normal operation.

Winterizing
You are responsible for determining when freezing conditions may occur. If freezing conditions are expected, take the following steps to reduce the risk of freeze damage. Freeze damage is not covered under warranty. In mild climate areas, when temporary freezing conditions may occur, run your filtering equipment all night to prevent freezing.

TO PREVENT FREEZE DAMAGE:

  1. Press Start/Stop to stop the pump and disconnect all power to the pump at the circuit breaker.
  2. Disconnect all power to the pump at the circuit breaker.
  3. Relieve all pressure from the filtration system at the filter air relief valve.
  4. Remove both drain plugs from the bottom of the strainer pot and drain the pump. Store the plugs in the strainer basket.
  5. Cover the motor to protect it from severe rain, snow and ice.

Note: Do not wrap motor with plastic or other air tight materials during winter storage. Never cover the motor when operating or expecting operation.

TROUBLESHOOTING

Diagnosing certain symptoms may require interaction with, or close proximity to, components that are energized with electricity. All servicing should be performed by a qualified service professional. Contact with electricity can cause death, personal injury, or property damage.

Troubleshooting Chart

Problem Possible Cause Corrective Action
Pump failure. Pump will not prime – Air in suction line or pump




Pump will not prime – Not enough water




Strainer basket excessively dirty or full


Strainer pot O-ring is damaged

| 1.   Inspect suction line plumbing and valve(s) for damage or loose

connections.

2.   Ensure the strainer pot lid is sealing properly. Verify lid O-ring is in

place.

3.   Ensure proper pool water level and water is available to the skimmer.

1.   Ensure suction line and pump strainer pot are full of water.

2.   Ensure suction line valve is working and open (some systems do not have valves).

3.   Ensure proper pool water level and water is available to the skimmer.

Clean strainer basket. See Cleaning the Pump Strainer Basket, page 14.

Inspect strainer pot O-ring for damage. Replace if necessary.

Reduced capacity and/or head.| Air in suction line or pump






Clogged impeller


Strainer basket excessively dirty or full

| 1.   Inspect suction line plumbing and valve(s) for damage or loose

connections.

2.   Ensure the strainer pot lid is sealing properly. Verify lid O-ring is in

place.

3.   Ensure proper pool water level and water is available to the skimmer.

Disassemble pump ( Pump Disassembly, page 16 ) and remove

debris from impeller.

Clean strainer basket. See Cleaning the Pump Strainer Basket, page 14.

Pump fails to start.| Mains voltage is not present Motor is locked

Motor shaft is damaged

| 1.   Replace fuse, reset breaker/GFCI.

2.   Tighten mains wire connections.

Disassemble pump ( Pump Disassembly, page 16 ) and attempt to

rotate motor shaft by hand to remove any blockage.

Replace pump.

Pump runs then stops.| Over temperature FAULT


Over current FAULT

| Ensure motor fan cover at the rear of the motor is free of dirt and

debris. Use compressed air to clean.

Pump will automatically restart after one (1) minute.

Pump is noisy.| Debris in contact with fan


Strainer basket excessively dirty or full


Loose mounting

| Ensure motor fan cover at the rear of the motor is free of dirt and

debris. Use compressed air to clean.

Clean strainer basket. See Cleaning the Pump Strainer Basket, page 14.

Ensure mounting bolts and pump bolts are tight.

Problem Possible Cause Corrective Action
Pump runs without flow. Impeller is loose

Air in suction line or pump





Clogged or restricted plumbing

| Ensure fan at the rear of pump is spinning. If so, disassemble pump ( Pump Disassembly, page 16 ) and ensure impeller is correctly installed.

1.       Inspect suction line plumbing and valve(s) for damage or loose

connections.

2.       Ensure the strainer pot lid is sealing properly. Verify lid O-ring is in

place.

3.       Ensure proper pool water level and water is available to the skimmer.

1.       Inspect for and clear any blockage in strainer pot or suction line.

2.       Inspect for blockage in discharge piping including partially closed valve or dirty pool filter.

Alarms and Fault Codes
If an alarm is triggered the drive will display a fault code text and the pump will stop running. Disconnect power to the pump and wait until the keypad LEDs have all turned off, then reconnect power. If the error continues to appear after power is reconnected, proper troubleshooting will be required. Use the error description table below to begin troubleshooting.

Fault Code Description
21 Communication link between HMI and motor control has been lost
1A Power Module over current detected
17 Phase Current Offset out of range
16 Phase Current Imbalance detected
0F Absolute AC under voltage detected
02 Absolute Phase current limit exceeded
08 Absolute Diode Bridge temperature limit exceeded
04 Absolute Power Module temperature limit exceeded
06 Absolute Power Factor Correction (PFC) temperature limit exceeded
09 DC bus over voltage detected
0A DC bus under voltage detected
19 Motor start failure
0b AC Voltage maximum exceeded
  1. The communication Link between the HMI and Motor Control has been lost: Remove the top cover from the drive and inspect the jacketed wire on the backside of the keypad. Ensure that the 5-pin connector is properly plugged into the socket and that there is no damage to the cable.
  2. Power Module Over Current Detected: If this error displays multiple times, then there may be a problem with the pump’s rotating assembly. Disassemble the pump (see Pump Disassembly on page 16) and inspect the impeller and shaft seal for problems. 0F – Absolute AC Under Voltage Detected: Indicates that the supply voltage has dropped below the operating range of 99v. This could be caused by normal voltage variation and will clear itself. Otherwise there could be excess voltage drops caused by improper installation or improper supply voltage.
  3. Motor Start Failure: Could indicate a locked rotor. Verify the fan at the rear of the motor is free of debris. Attempt to break up impeller blockages by rotating the motor shaft through the fan cover using a hex-key. If this does not work the pump may need to be disassembled (see Pump Disassembly on page 16).
  4. AC Voltage Maximum Exceeded: Indicates that the supply voltage is exceeding the operating range of 251v. 1A,17,16, 02, 08, 04, 06, 09, 0A – Internal Errors: These errors can occur based on operating conditions and the required self-diagnostic safety software. If they do not clear after multiple restart attempts the drive should undergo a hard power cycle. Disconnect power at the circuit breaker long enough for the keypad LEDs to turn off. If the error continues to appear after power is reconnected, the drive may need service.

REPLACEMENT PARTS

PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-23

Item P/N Description
1 357199 Lid Clamp

2

| 357151| Lid
357156| Lid, Chemical Resistant
3| 350013z| O-ring, Lid
4| 070387z| Strainer Basket
5| 070430| Bolt, 3/8 – 16 x 1-1/4 Hex Head. SS, 4 Req.
6| 072184| Washer, 3/8 x 7/8 O.D. SS, 6 Req.
7| 070431| Bolt, 3/8 – 16 x 2 Hex Head. SS, 2 Req.
8| 071403| Nut, 3/8, 16 Hex Head, 2 Req.
9| 357100z| Gasket, Seal Plate
10| 350015| Strainer Pot
11| 355227z| O-ring, Diffuser
12| 071660z| Screw, Diffuser, 2 Req.
13| 072927z| Diffuser
14| 071652z| Impeller Screw, 1/4 – 20 x 1 in., LH, Phillips
15| 075713| Washer, Impeller Screw


16

| 071734s| Shaft Seal, PA-7 w/ Ceramic Seat, PS1000
071732s| Shaft Seal, Ozone/Salt Resistant
17| 070429z| Bolt, Motor/Seal Plate, 4 Req.
18| 350202| Seal Plate Kit (Shaft Seal installed) (Incl. Items 9, 16 & 18)
Item| P/N| Description
---|---|---
19| 070927| Motor Foot
20| 070929| Insert, Motor Foot
21| 071657z| Screw, Motor Foot, 2 Req.
22| 071406| Nut, Motor Foot, 2 Req.
23| 072183| Washer, Motor Foot, 2 Req.
24| 071131z| Drain Plug, 2 Req.
25| 192115| O-ring, Drain Plug, 2 Req.
26| 357149| Strainer Pot/Seal Plate Kit,

(Incl. Items: 1-4, 9, 10, 16, 18, 24, and 25)

27| 073130| Impeller
28| 356279| Drive Cover
29| 356282| Drive Kit
30| 356286s| Motor
31| 356289s| Motor/Drive Assembly
–| 075455| Fluid Assembly, (Incl. All Items EXCEPT 31)
–| 357243| Strainer Pot Assembly, (Incl. Items 1-4, 10, 24 and 25)
–| 356324z| RS-485 Automation Wiring Kit
–| 357923z| Motor Fan Guard Kit

TECHNICAL DATA

Performance CurvesPENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-
fig-27

Specifications and Dimensions

Overall Ratings

  • Input Voltage 115-230 Vrms nominal
  • Input Current 13.9/11.1-10.1 A
  • Input Frequency Single phase, 50 or 60 Hz
  • Control Terminals 18-30V AC (24V AC +/-20%) or 9-30V DC (12/24V DC +/-20%)
  • Maximum Continuous Load WEF 8.4 THP: 2.6
  • Speed Range 450 – 3450 RPM
  • Environmental Rating NEMA Type 3

PENTAIR-WHISPERFLO-VS-Variable-Speed-Pump-fig-26

WHISPERFLO® VS and WHISPERFLO® VST Variable Speed Pump Installation and User’s Guide

1620 HAWKINS AVE., SANFORD, NC 27330 919-566-8000 10951 WEST LOS ANGELES AVE., MOORPARK, CA 93021 805-553-5000 WWW.PENTAIR.COM All indicated Pentair trademarks and logos are property of Pentair. Third party registered and unregistered trademarks and logos are the property of their respective owners. Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice. Pentair is an equal opportunity employer. © 2022 Pentair. All rights reserved. This document is subject to change without notice.

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