PENTAIR MAX-E-PROXF High Performance Pumps User Guide

: June 2, 2024
: Pentair

MAX-E-PROXF High Performance Pumps

Specifications:

Product: High Performance Pump
Customer Service: 800-831-7133
Website: www.pentair.com
Operating Hours: 8:00AM to 7:30PM EST (5:00AM – 4:30PM
PST)

Product Usage Instructions:

1. Installation:

Location:

Choose a suitable location for the pump that provides adequate
ventilation and is easily accessible for maintenance.

Piping:

Connect the pump to the existing piping system following the
provided guidelines to ensure proper flow.

Valves:

Install necessary valves to control the flow of water in and out
of the pump for efficient operation.

Electrical Requirements:

Ensure the electrical supply meets the requirements specified in
the manual to prevent any electrical issues.

Electrical Installation:

Follow the electrical installation instructions carefully to
connect the pump safely to the power source.

2. Operating the Pump:

Priming the Pump:

Before starting the pump, ensure it is properly primed to remove
any air and allow for optimal performance.

3. Maintenance:

Pump Strainer Basket:

Regularly inspect and clean the pump strainer basket to prevent
clogging and maintain efficiency.

Cleaning the Pump Strainer Basket:

Follow the provided instructions on how to remove, clean, and
reinstall the pump strainer basket.

Winterizing:

If applicable, winterize the pump following the recommended
procedures to protect it during colder months.

4. Servicing:

Motor Care:

Perform regular maintenance on the motor to ensure it operates
smoothly and efficiently.

The Mechanical Seal:

Inspect and replace the mechanical seal if necessary to prevent
leaks and maintain pump performance.

Pump Disassembly/Reassembly:

Refer to the pump parts diagram for disassembly and reassembly
instructions when servicing the pump.

5. Troubleshooting:

Refer to the troubleshooting section in the manual for common
issues and solutions related to pump operation.

FAQ:

Q: Can I install the pump myself?

A: It is recommended to have the pump installed
and serviced by a qualified pool service professional to ensure
proper installation and operation.

WHISPERFLOXF® MAX-E-PROXF®
HIGH PERFORMANCE PUMPS
INSTALLATION AND USER’S GUIDE
IMPORTANT SAFETY INSTRUCTIONS READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS

i
CUSTOMER SERVICE AND TECHNICAL SUPPORT
Hours: 8:00AM to 7:30PM EST (5:00AM – 4:30PM PST) Call: 800-831-7133 Visit: www.pentair.com Fax: 800-284-4151

TABLE OF CONTENTS

Important Safety Instructions ……………………….. ii

Introduction …………………………………………………. 1

Pump Features

1

Union Adapter Installation

1

Installation …………………………………………………… 2

Location

2

Piping

2

Valves

2

Electrical Requirements

2

Electrical Installation

3

Operating the Pump ……………………………………… 4

Priming the Pump

4

Maintenance ………………………………………………… 5

Pump Strainer Basket

5

Cleaning the Pump Strainer Basket

5

Winterizing

5

Servicing ……………………………………………………… 6

Motor Care

6

The Mechanical Seal

6

Pump Disassembly

6

Pump Parts Diagram

7

Pump Reassembly

7

Troubleshooting …………………………………………… 8

Replacement Parts ………………………………………. 9

Parts List

9

Motor Table

10

Hydraulic Parts Table

10

Technical Data ……………………………………………… 11

Performance Curves

11

Pump Dimensions

12

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

ii

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.

NOTE

Indicates special instructions not related to hazards.

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:
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.
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.
This pump is for use with permanent swimming pools and 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 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 pump’s 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.
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.
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.

F

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

iii

IMPORTANT SAFETY INSTRUCTIONS

TO MINIMIZE THE RISK OF INJURY DUE TO SUCTION ENTRAPMENT HAZARD: · A properly installed and secured ANSI/ASME A112.19.8 approved antientrapment 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 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: (i) 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
(ii) A properly designed and tested suction-limiting vent system or (iii) 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) A SVRS meeting ASME/ANSI A112.19.17 and/or ASTM F2387, or (B) A properly designed and tested suction-limiting vent system, or (C) An automatic pump shut-off system, or
(D) Disabled submerged outlets, or
(E) Suction outlets shall be reconfigured into return inlets.

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.
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.

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 (start-up, 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.

Warning Page P/N 352557 Rev. D 11/19

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

Pump Features
The WhisperFloXF® and Max-E-ProXF® High Performance Pumps are specifically designed to be the best choice for a variety of inground pools. A heavy duty 56 square flange motor, and highly engineered hydraulics make this rugged and tested design perfect for any pool, spa, water feature, or fountain.
· Extremely quiet operation
· See-through lid permits easy inspection of strainer basket
· Self-priming for quick, easy start-up · Unionized fittings (2.5″ and 3″) for simple replacement · Heavy-duty, high service factor 56 square flange motor for
long life
· Diamond Seal O-rings for superior seal performance
· Integral volute and pot reduce hydraulic noise

1
INTRODUCTION
WhisperFloXF Pump (Almond) Max-E-ProXF Pump (Black)
Drop-in replacement for all WhisperFlo® pumps. Simple replacement for Challenger® pumps
(Riser base required for Challenger replacements P/N 400012 available separately)

Union Adapter Installation
1. Glue the PVC union adapter fitting to the PVC pipe. The adapter accepts 2.5″ PVC pipe internally or a 3″ PVC coupling externally. Note: Be sure that the groove for the retainer ring is on the end opposite your glue joint.
2. Slip the nut onto the fitting. 3. Place the flat side of the retainer ring against the adapter
on the grooved end.
4. Gently flex the locking clip union nut retainer ring into its place in the groove on the adapter.
5. Start snapping it in at one end of the ring and work your way around. The tab features should point out away from the nut and the glue joint towards the sealing surface.
6. Slide the nut over the ring and attach it to the pump.
Only install the retainer ring with the tab features pointing away from the nut.

Slip the nut onto the fitting. Snap retainer ring around the adapter.

Union Nut and Adapter

Slide the nut over the adapter WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

2

INSTALLATION
Only a qualified plumbing professional should install the WhisperFloXF® or Max-E-ProXF® High Performance Pump. Refer to “Important Safety Instructions” on pages ii – iii 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 unless marked accordingly.
Note: Ensure that the pump is mechanically secured to the equipment pad.
Ensure the pump location meets the following requirements:
1. Install the pump as close to the pool/spa as possible. To reduce friction loss and improve efficiency, use short, direct suction and return piping.
2. Install a minimum of 5 feet (1.5 meters) from the inside wall of the pool and spa. Canadian installations require a minimum of 9.8 ft (3 meters) from the inside wall of the pool.
3. Install the pump a minimum of 3 feet (0.9 meters) from the heater outlet.
4. Do not install the pump more than 10 feet (3.1 meters) 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 inches (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 times the suction line diameter. See Figure 2.
Example: A 2.5 inch pipe requires a 12.5 inch (31.8 cm) straight run in front of the suction inlet of the pump. This will help the pump prime faster and last longer.
Note: DO NOT install 90° elbows directly into the pump inlet or outlet.

6 IN. (15.2 CM) MINIMUM

3 IN. (7.6 CM) MINIMUM
Figure 1: Pump Rear and Vertical Clearance

ELBOW

5 x SUCTION PIPE DIAMETER

Figure 2: Recommended Piping
Valves
1. 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.
2. 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.
3. Be sure to install check valves when plumbing in parallel with another pump. This helps prevent reverse rotation of the impeller and motor.
Electrical Requirements
· Install all equipment in accordance with the National Electrical Code and all applicable local codes and ordinances.
· A means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

3

Electrical Installation
RISK OF ELECTRICAL SHOCK OR ELECTROCUTION. This pump must be installed by a licensed or certified electrician or a qualified service professional in accordance with the National Electrical Code (NEC) and all other applicable national or 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 and any automatic controls 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 working on the pump.

Wiring
1. Ensure all power to the pump and any automatic controls is disconnected at the main circuit breaker before servicing the pump.
STORED CHARGE – Wait at least sixty seconds before servicing.
2. Familiarize yourself with the wiring diagram and electrical specifications of the motor. This information is provided on the motor nameplate label found on the side of the motor.
3. Ensure the supply voltage meets the requirements listed on the motor nameplate. If these requirements are not met, permanent motor damage may occur.
4. For wiring sizes and general guidelines for proper electrical installation, follow the specifications defined in the National Electrical Code and all other applicable national or local codes.
5. 3-Phase motors require external overload protection.
6. After installation, cycle power and note the rotation of the motor fan or shaft. If wired correctly the motor shaft and/or fan will match the rotation arrow noted on the pump.
7. Use strain reliefs and ensure all electrical connections are clean and tight.
8. Always cut conductors to the appropriate length to prevent electrical arcs.

Bonding
1. Bond the motor to the pool structure in accordance with the National Electrical Code and all other applicable national or local codes.
2. Using 8 AWG or larger solid copper bonding conductor (6 AWG or larger in Canada), connect the motor bonding lug to all metal parts of the pool/spa and to all electrical equipment, metal conduit, and metal piping within 5 ft (1.5 m) of the inside walls of the pool/spa.
Before establishing or restoring power to the pump, ensure all electrical connections are tight and all electrical and wiring compartment covers are properly installed.
Note: When the pump is started and stopped by removing power with a relay or timer, a two-pole device should be used to apply and remove power to both POWER LINE TERMINALS. Pentair offers GFCI breakers which offer appropriate personal protection while meeting 2008 to current NEC Standards for Pool Pumps. See Pentair product catalog for details.

Motor Shaft Flats for 1/2″
Wrench

Ground Screw

Grounding
1. Permanently ground the motor at the green ground screw (Figure 3).
2. Use the correct wire size and type specified by National Electrical Code and ensure the ground wire is connected to an electrical service ground.
3. The pump should be permanently connected to either a circuit breaker, 2-pole timer or 2-pole relay.
Note: If AC power is supplied by a GFCI circuit breaker, the pump should be wired on its own independent circuit unless the pump is operated in tandem with a Pentair salt chlorine generator.

Ground Screw
1/2″ NPT Receptacle for Liquid Tight Connector
Bonding Lug

1/2″ NPT Receptacle for Liquid Tight Connector
Bonding Lug

Motor Shaft Flats for 1/4″ Allen Wrench
Figure 3: Pump Wiring

Section P/N 350486 Rev. F 1/3/23
WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

4
OPERATING THE PUMP

DO NOT run the pump dry. If the pump is run dry, the mechanical 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 case, impeller and seal, and may cause property damage and personal injury.
Before turning the pump ON, be sure the following conditions are met: 1. Open filter air relief valve. 2. Open valves. 3. Pool return is completely open and clear of any blockages. 4. Water in the pump basket. 5. Stand clear of the filter or other pressurized vessels.

Priming the Pump
If the pump is installed below the water level of the pool, close return and suction lines prior to opening hair and lint pot on pump. Be sure to reopen valves prior to operating.
Note: Running the pump dry could cause a loss of pressure, resulting in damage to the pump case, impeller and seal.

Lid Volute

The pump strainer pot must be filled with water before the pump is initially started. Follow the steps below to prime the pump:
1. Remove the pump lid and locking ring.
2. Fill the pump strainer pot with water.
3. Reassemble the pump lid and locking ring onto the strainer pot. The pump is now ready to prime.
4. Open the air relief valve on the filter, and stand clear of the filter.
5. Turn on the pump.
6. When water comes out of the filter air relief valve, close the valve. The system should now be free of air and recirculating water to and from the pool.
7. This pump will prime within 20 minutes. Do not allow your pump to run longer than this time without developing full flow. If the pump does not prime, see the “Troubleshooting” section on page 8.
8. Two-speed pumps should run on high speed for priming.

Locking Ring
Close Lid/Locking Ring handles in horizontal position

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

5
MAINTENANCE

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

Pump Strainer Basket
The strainer basket (or `strainer pot’), is located in front of the pump housing. The strainer basket must be kept clean and free of debris. Inspect basket through the lid on the top of the housing.
Visually inspect the strainer basket at least once a week. Dirty strainer baskets reduce filter and heater efficiency and put abnormal stress on the pump motor.
Cleaning the Pump Strainer Basket
1. Disconnect power to the pump at the circuit breaker.
2. Relieve pressure in the system.
3. Turn the lid and locking ring counter-clockwise and remove from the pump.
4. Remove debris and rinse out the basket. Replace the basket if it is cracked.
5. Place the basket into the strainer pot.
6. Fill the pump pot and volute up to the inlet port with water.
7. Clean the lid and locking ring, O-ring, and sealing surface of the pump pot. Note: It is important to keep the lid O-ring clean and well lubricated.
8. Reinstall the lid by placing the lid and locking ring on the pot. Be sure the lid O-ring is properly placed. Seat the lid and locking ring on the pump then turn clockwise until the locking ring handles are horizontal.
9. Open the manual air relief valve on top of the filter, and stand clear of the filter.
10. Reestablish power to the pump at the circuit breaker.
11. When water comes out of the air release valve, close the valve.
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.

Winterizing
In mild climate areas, when temporary freezing conditions may occur, run your filtering equipment all night to prevent freezing. 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. To prevent freeze damage, follow the procedures listed below: 1. Stop the pump and disconnect all power to the
pump at the circuit breaker. 2. Open the filter’s air relief valve and relieve all
pressure from the filtration system. 3. Remove both drain plugs from the bottom of the
strainer pot and drain the pump. Store the plugs in the strainer basket. 4. 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.
Lid/Locking Ring
Strainer Basket
O-ring Volute
Pot
Drain Plugs
Strainer Pot Assembly

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

6
SERVICING

Always disconnect power to the pump at the circuit breaker and disconnect the communication 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.
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.
Be sure not to scratch or mar the polished shaft seal faces; seal will leak if faces are damaged. The polished and lapped faces of the seal could be damaged if not handled with care.

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 a motor has been damaged by dirt, it voids the motor
warranty. 5. Clean the lid and locking ring O-ring, and sealing
surface of the pump pot.
Protect against moisture 1. Protect from splashing or sprayed water. 2. Protect from extreme weather. 3. If a motor has become wet, let it dry before operating. Do
not allow the pump to operate if it has been flooded. 4. If a motor has been damaged by water, it voids the
motor warranty.

The Mechanical Seal

The mechanical seal consists primarily of two parts, a

rotating member and a ceramic seal. The pump requires

little or no service other than reasonable care. However, a

mechanical seal may occasionally become damaged and

must be replaced.

Ceramic &

Rubber Half:

Spring Half: Carbon face is pointing outward

White ceramic face is pointing outward

Mechanical Seal

Pump Disassembly
Tools required: · Adjustable wrench · Flat-blade screwdriver · 3/8 inch socket wrench · 9/16 inch open end wrench · 9/64 inch Hex key wrench
To remove and repair the motor subassembly, follow the steps below:
1. Turn off the pump circuit breaker at the main panel.
2. Drain the pump by removing the drain plugs.
3. Using a 9/16 inch open end wrench, remove the six nuts that secure the main pump body (strainer pot/volute) to the rear subassembly.
4. Gently pull the two pump halves apart, removing the rear subassembly.
5. Remove the three hex head screws holding the diffuser in position with a 9/64 inch Hex key wrench.
6. Using a 3/8 inch socket wrench, hold the impeller securely in place and remove the impeller screw and lock washer.
Note: The impeller screw is a left-handed thread and loosens in a clockwise direction.
7. Remove the screw on the motor rear plastic cover and remove the rear plastic cover.
8. Using an adjustable wrench to hold the motor shaft, twist the impeller counter-clockwise to remove it from the shaft.
9. Remove the four nuts from the seal plate to the motor using a 9/16 inch wrench.
10. Place the seal plate face down on a flat surface and press out the ceramic part of the mechanical seal.
11. Clean the seal plate, seal housing, and the motor shaft.
Pump Parts Diagram view on the next page

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

7

Pump Reassembly
1. Install the spring end of the mechanical seal onto the impeller shaft. Be sure the black/carbon face is facing outward.
2. Remount the seal plate to the motor using the four lock washers and nuts.
3. With the white ceramic face facing outward, press the seal into the seal plate with your thumbs and wipe off the ceramic with a clean cloth. Do not lubricate seal faces.
4. Hand tighten impeller onto the motor shaft.
5. Reinstall the impeller screw and lock washer (counter-clockwise to tighten).
6. Reinstall the rear plastic cover on the back of the motor.
7. Remount the diffuser onto the seal plate. Make sure the plastic pins and holding screw inserts are aligned (see “TOP” indicator).

8. Assemble the motor subassembly to the housing. Do not tighten the nuts and washers until all four motor bolts are in place. Using a torque wrench, install and tighten the four nuts to a torque value of 100 in-lbs (maximum). Do not overtighten the nuts.
9. Fill the pump with water.
10. Reinstall the pump lid and locking ring; see Maintenance on page 5.
11. Reprime the system. Refer to page 4 for priming instructions.

Nuts/Lock Washers (x4) Motor Shaft/Slinger

Impeller Screw/ Lock Washer
Seal Plate O-ring
Diffuser Screw (x3)

Seal Plate Impeller

Diffuser Ring

Mechanical Seal

Nuts/Lock Washers (x4)
Motor Base

Seal Plate Mechanical Seal
Impeller
Impeller Screw/ Lock Washer
Diffuser Screw (x3)
Diffuser O-ring
Seal Plate O-ring Diffuser
Pump Parts Diagram

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

8
TROUBLESHOOTING

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.
Improper installation will create an electrical hazard which could result in death or serious injury to pool users, installers, or others
due to electrical shock, and may also cause damage to property. 1. If you are not familiar with your pool filtering system and/or heater: a. Do NOT attempt to adjust or service without consulting your dealer, or a qualified pool technician. b. Read the entire Installation & User’s Guide before attempting to use, service or adjust the pool filtering system or heater. 2. Switch OFF power to the pump before attempting to service or repair.

Problem
Pump will not prime
Pump gasket defective Reduced capacity and/or head Air pockets or leaks in suction line Pump will not prime — too much air
Clogged impeller

Corrective Action
Check suction piping and valve on any suction gate valves. Secure lid on pump strainer pot and be sure lid gasket is in place. Check water level to make sure skimmer is not drawing air. Be sure suction lines, pump strainer, and pump volute are full of water. Be sure valve on suction line is working and open. Some systems do not have valves. Check water level to be sure water is available through skimmer.
Replace gasket. Check suction piping and valve on any valve suction gate valves. Secure lid on pump strainer pot and make sure lid gasket is in place. Check water level to make sure skimmer is not drawing air. Clean pump strainer pot. Check to see if impeller or diffuser are clogged.
Switch OFF electrical power at the house circuit breakers to the pump. Remove the nuts that secure the volute to the seal plate. Slide the motor and seal plate away from the volute. Clean debris from impeller. If debris cannot be removed, complete the following steps: (1) Remove impeller screw and lock washer. (2) Remove, clean, and reinstall impeller. (3) Reinstall anti-spin bolt. Reinstall diffuser and O-ring. Reinstall motor and seal plate into volute. Reinstall hardware around seal plate and volute and tighten securely. Clean suction trap.

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

Parts List

9
REPLACEMENT PARTS

26

1

2

4

21

20

19 18

5

17

16

15

6

14

13

3
9

10

11

25 24 23 22

8

7

12

Item
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21
22 23 24 25 26 Not Shown Not Shown Not Shown Not Shown

Description
Wet End Assembly Power End Assembly Union Kit Without Tap Lid Assembly Strainer Basket Lid O-ring Drain Plug O-ring Drain Plug 2.5″ C-Clip Locking Ring 2.5″ Union Adapter without Tap 2.5″ Union Nut 2.5″ Diamond Seal Kit – (Includes two) Diffuser O-ring Diffuser Screw Diffuser Impeller Screw Impeller Screw Lock Washer Seal Plate O-ring Impeller Assembly Mechanical Seal Assembly Seal Plate Seal Plate Kit With Mechanical Seal Flat Washer Split Lock Washer Acorn Nut Motor Base Motor Fan Cover Kit, TEFC/Super-Duty Motors Hardware / O-ring Kit Riser Plate XF to Challenger
Seal Plate Kit With Mechanical Seal

WhisperFlo XF Max-E-Pro XF

400000

401000

See Power End Table

410020

400006

401006

400007z

35505-1440

192115

071131

357161

410001

410002

411000

410016z

350336

353323

See Hydraulic Parts Table

356073

072172

351446

See Hydraulic Parts Table

17351-0101s

400002

401002

400031z

400032z

072184

U43-12ss

071413

400004z

See Motor Table

357923z

357924z

400030z

400012

400031z

400032z

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

10

Motor Table

WhisperFloXF XF-8 XF-12 XFE-8
XFE-12 XFE-20 XFDS-8 XFDS-12 XFDS-30 XF-30 XFE-30 XFET-8 XFET-12 XFET-20

Model Name and Specs

Max-E-ProXF

Description

XP-8

2hp Standard Eff 230V

XP-12

3hp Standard Eff 230V

XPE-8

2hp High Eff 208-230V

XPE-12

3hp High Eff 208-230V

XPE-20

5hp High Eff 208-230V

XPDS-8

2hp 2-Speed 230V

XPDS-12

3hp 2-Speed 230V

XPDS-30

2.5hp Uprated 2-Speed 230V

XP-30

2.5hp Uprated Standard Eff 230V

XPE-30

2.5hp Uprated High Eff 208-230V

XPET-8

2hp 1-Phase TEFC 208-230V

XPET-12

3hp 1-Phase TEFC 208-230V

XPET-20

5hp 1-Phase TEFC 208-230V

Motor P/N

WhisperFloXF Max-E-ProXF

355026s

355027s

355033s

355034s

355014s

355015s

355016s

355017s

353317s

353319s

359526s

359527s

353316s

353318s

359526s

359527s

355026s

355027s

355014s

355015s

354815s

354816s

354817s

354818s

354819s

354820s

Power End P/N

WhisperFloXF Max-E-ProXF

400612z

401612z

400613z

401613z

400609z

401609z

400610z

401610z

400611z

401611z

400607z

401607z

400608z

401608z

400607z

401607z

400612z

401612z

400609z

401609z

400632z

401632z

400633z

401633z

400634z

401634z

Hydraulic Parts Table

WhisperFloXF XF-8 XF-12 XFE-8
XFE-12 XFE-20 XFDS-8 XFDS-12 XFDS-30 XF-30 XFE-30 XFET-8 XFET-12 XFET-20

Model Name and Specs

Max-E-ProXF

Description

XP-8 XP-12 XPE-8 XPE-12 XPE-20

2hp Standard Eff 230V 3hp Standard Eff 230V 2hp High Eff 208-230V 3hp High Eff 208-230V 5hp High Eff 208-230V

XPDS-8

2hp 2-Speed 230V

XPDS-12

3hp 2-Speed 230V

XPDS-30

2.5hp Uprated 2-Speed 230V

XP-30 XPE-30

2.5hp Uprated Standard Eff 230V 2.5hp Uprated High Eff 208-230V

XPET-8

2hp 1-Phase TEFC 208-230V

XPET-12

3hp 1-Phase TEFC 208-230V

XPET-20

5hp 1-Phase TEFC 208-230V

Hydraulic Parts

Diffuser

Impeller

400010

400020z

400010

400015

400010

400020z

400010

400015

400011z

400023z

400010

400020z

400010

400015

400010

400020z

400010

400020z

400010

400020z

400010

400020z

400010

400015

400011z

400023z

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

11
TECHNICAL DATA

Performance Curves

110

100

90

Total Dynamic Head in Ft of H20

80

70

60

50

40

30 A

20

B

D

C

10

E

F

0

20

40

60

80 100 120 140 160 180 200 220 240 260 280 300

Volumetric Flow Rate in US Gallons Per Minute

Pump Model

WhisperFloXF

Max-E-ProXF

XFE-20, XFET-20

XPE-20, XPET-20

XFE-12, XFET-12

XPE-12, XPET-12

XFDS-12

XPDS-12

XF-12

XP-12

XFE-8, XF-8, XFE-30, XFET-8, XF-30

XPE-8, XP-8, XPE-30, XPET-8, XP-30

XFDS-8, XFDS-30

XPDS-8, XPDS-30

Curve
A B B, E C D D, F

The following items are for Saudi Arabian export compliance only: 208-230V and 230V Pumps IEC 602335-1 and 602335-2-41 Maximum Water Temperature = 40°C (104°F) Non-Submersible Pump IP Rating: IPX4 Hmin = 3m Maximum Total Head = 32.0m This pump is to be supplied by an isolating transformer or supplied through a residual current device (RCD) having a rated residual current not exceeding 30mA.
WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

12 Pump Dimensions
12″ [298mm] 14″ [358mm]

ALLOW 3″ HORIZONTAL CLEARANCE FOR TEFC FAN CIRCULATION
A
11.4″ [288mm] 9.125″ [232mm]

1/2″ WRENCH FLATS ON
MOTOR SHAFT
11″ [276mm]

10.2″ [258mm]

10.5″ [267mm]

4.4″ [113mm]

6.5″ 166mm] B
HEIGHT TO 1/2″ NPT CONDUIT RECEPTACLE

6.6″ [168mm] ANCHOR BOLT MOUNTING LOCATIONS

MOTOR HP
2 & 2.5
3
5

DIMENSION “A”

STD EFF

EE

1PH TEFC

26.4″ [671mm] 27.4″ [696mm] –

27.4″ [696mm] 27.7″ [704mm] 28.2″ [717mm]

24.4″ [620mm] 25.0″ [635mm] 25.9″ [658mm]

MOTOR HP
ALL

DIMENSION “B”

STD EFF

EE

4.8″ [122mm] 4.8″ [122mm]

1PH TEFC 9.7″ [247mm]

WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

13
NOTES
WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

14
NOTES
WHISPERFLOXF® and MAX-E-PROXF® High Performance Pump Installation and User’s Guide

15
NOTES
WHISPERFLOXF® and MAX-E-PROXF® High Performance 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
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.
© 2023 Pentair. All rights reserved. WWW.PENTAIR.COM
352036
P/N 352036 REV. G 2/1/23