PENTAIR SKHD150 Submersible Effluent Pump User Manual

: October 30, 2023
: Pentair

PENTAIR SKHD150 Submersible Effluent Pump

SKHD150 Submersible Effluent Pump

Important Safety Instructions

SAVE THESE INSTRUCTIONS – This manual contains important instructions that should be followed during installation, operation, and maintenance of the product. Save this manual for future reference.

This is the safety alert symbol. When you see this symbol on your pump or in this manual, look for one of the following signal words and be alert to the potential for personal injury!

indicates a hazard which, if not avoided, will result in death or serious injury.

indicates a hazard which, if not avoided, could result in death or serious injury.

indicates a hazard which, if not avoided, could result in minor or moderate injury.
NOTICE addresses practices not related to personal injury.
The manufacturer cannot anticipate every possible circumstance that might involve a hazard. The warnings in this manual, and the tags and decals affixed to the unit are, therefore, not all-inclusive. If you use a procedure or operating technique that the manufacturer does not specifically recommend, you must satisfy yourself that it is safe for you and others. You must also make sure that the procedure or operating technique that you choose does not render the system unsafe.

Electrically powered effluent pumps normally give many years of trouble-free service when correctly installed, maintained, and used. However, unusual circumstances (interruption of power to the pump, large solids in the sump, flooding that exceeds the pump’s capacity, electrical or mechanical failure in the pump, etc.) may prevent your pump from functioning normally. To prevent possible damage, consult your dealer about installing a secondary effluent pump or a high water alarm.
See Troubleshooting in this manual for information about common effluent pump problems and remedies. For more information, see your retailer, call Hydromatic customer service at 1-888-957-8677 or visit our web site at hydromatic.com.

Hazardous voltage – risk of electrical shock. Shock can cause serious injury or death. Failure to follow the warnings below can result in fatal electric shock.
Burn Hazard. Motors can operate at high temperatures. Do not touch an operating motor. To do so can cause personal injury.
Risk of flooding. If a flexible discharge hose is used, pump may move around in sump when motor starts. If it moves far enough so that the switch hits the side of sump, the switch may stick and prevent the pump from starting. Make sure the pump is secured so it cannot move around in the sump.
Hazardous pressure and gas – risk of explosion and personal injury. Failure to follow the warnings that follow can result in personal injury.

If your basement has water or moisture on the floor, do not walk on the wet area until all the power has been turned off. If the shut-off box is in the basement, call the electric company or the hydro authority to shut off the service to the house, or call your local fire department for instructions. Do not handle the pump or pump motor with wet hands or when standing on wet or damp surfaces.
Connect only to a properly grounded receptacle.
All wiring should be performed by a qualified electrician.
Protect the electrical cord from sharp objects, hot surfaces, oils, and chemicals. Observe the Cord Lift Warning shown below.
Risk of explosion and hazardous gas. Septic tank must be vented in accordance with local plumbing codes.
Do not smoke or use sparkable electrical devices or flame in a septic (gaseous) or possible septic sump. If a septic sump condition exists and if entry into sump is necessary, then (1) provide proper safety precautions per OSHA requirements and (2) do not enter sump until these precautions are strictly adhered to.
Do not install pump in location classified as hazardous per N.E.C., ANSI/NFPA 70- 2001.
California Proposition 65 Warning
**** This product and related accessories contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
Know the pump application, limitations and potential hazards.
Wear safety glasses at all times when working with the pump.
Keep the work area clean, uncluttered and properly lighted – secure all unused tools and equipment.
Keep visitors at a safe distance from working area.
Make the workshop child-proof – with padlocks, master switches, and by removing starter keys.
Release all pressure within the system before servicing any component.
Provide a means of pressure relief for pumps whose discharge line can be shut-off or obstructed.
Periodically inspect the pump and system components. Perform routine maintenance as required.
Drain all the liquid from the system before servicing.

Installation

hank you for purchasing this Hydromatic® pump. To help ensure years of trouble-free operation, please read the manual carefully.
Before installation, check your local electrical and plumbing codes. Typical sewage pump installations are shown on the next page.

Cord Lift Warning

Risk of electrical shock. Can burn or kill. Do not lift pump by power cord.

Risk of electrical shock and fire.

Attempting to lift or support the pump by the power cord can damage cord and cord connections, expose bare wires, and cause a fire or electrical shock.
Use handle on top of pump for all lifting or lowering of pump. Disconnect the power to the pump before doing any work on it or attempting to remove it from the pit.
Lifting or supporting the pump by the power cord will void the warranty.

Typical Simplex Effluent Installation

Installation

Follow these guidelines for installation:

Provide proper basin or tank size to ensure pump operates without restriction. A two to five minute run time is recommended.
Make sure sump is free of string, cloth, nails, gravel, etc. before installing pump.
Do not set pump directly on the bottom of sump pit if it is not solid. Raise the pump by using bricks or concrete blocks underneath it.
Use steel or plastic pipe for all connecting lines between pump and sewer outlet.
NOTICE: Some city regulations do not allow installing a pump with plastic pipe. Check local regulations.
Use PTFE pipe thread sealant tape on pipe connections. Do not use ordinary pipe joint compound on plastic pipe or pump. Pipe joint compound can attack plastics and damage pump.
In applications where the pump may sit idle for months at a time, it is recommended that the pump(s) be cycled every month to ensure the pumping system is working properly when needed.
A check valve should be installed horizontally in discharge pipe.
The optional Hydromatic Q Alert is an audible alarm system for high water conditions. It should be installed in every sump for greater protection.
NOTICE: Q Alert is for indoor use only. Other Q Alarm and control panels are available for outdoor use. Contact your Hydromatic distributor for applications.
Use pump partially or completely submerged for pumping water like liquids (temperature to 140° F). The pump will pump solid materials up to 3/4″ (spherical) in diameter. This pump has not been investigated for use in swimming pool areas.
Do not pump flammable liquids. Strong chemicals or salt water should not be pumped without consulting your Hydromatic distributor for proper seals and coatings.

Operation

Doing so will void the warranty and may damage the pump.
An automatic overload protector in the motor will protect the motor from burning out due to overheating/ overloading. When the motor cools down, the overload protector will automatically reset.
If overload trips frequently, check for the cause. It could be a stuck impeller, wrong/low voltage, or electrical failure in motor. If an electrical failure in the motor is suspected, have it serviced by a competent repairman.

Maintenance

Read the following instructions carefully before replacing any parts. Reasonable care and safe methods should be practiced. Check local codes and requirements before installation. Only a competent plumber or electrician should make the installations.

Submerge pump in a disinfectant solution (dilute chlorine bleach) for at least one hour before disassembling pump. Check for an obstruction in the impeller by looking through the suction hole of the pump. The shaft should turn freely if unobstructed. Keep fingers, clothing or any material from suction inlet.

The steps described in this section should be performed only by an authorized service center.

NOTICE: Read all directions before replacing any parts. Always remove pump from power source before servicing.
The numbers in parentheses, such as “(3)” or “(16)”, refer to item numbers used on the Repair Parts diagram.

Using an ohmmeter

To be sure wires are not burned off or broken, use an ohmmeter to perform resistance checks. Set ohmmeter scale to R X 1 scale and check meter by putting both meter leads together and adjusting the needle knob until meter reads zero. If meter cannot be adjusted to zero, the batteries in meter must be replaced.
NOTICE: Always reset meter to zero [0] when going to a new scale before making any measurements.
If wire is OK, meter needle will go to near zero and stay there. If meter needle does not move, the wire has an open and the wire must be repaired or replaced.

Repair – Motor

Hazardous voltage – risk of electrical shock. Be certain power to pump is off! Disconnect pump power cord from terminals and remove pump from sump pit.

If motor does not run when the pump is tested, the capacitor and/or stator must be checked. See Step 4.
Remove plug (9) from top of housing (2) and pour oil into a clean glass container. If oil is clear, it will indicate motor is not burned and there has been no water leak into the motor. If oil is black, it will indicate a burned stator. If oil is cloudy, it will indicate water in motor oil, so all seals should be replaced.
After draining oil, carefully loosen the power cord assembly from the motor housing. With power cord loose, remove the screws (7) and carefully lift off the motor housing (2) exposing the capacitor (3, single phase [1ø] only) and the motor assembly (5).
On 1ø units, check capacitor ( 3 ) using ohmmeter. With ohmmeter scale set at R X 1000, attach meter leads to capacitor. The meter needle should go to zero and come back slowly. If it does not, the capacitor should be replaced.
To check motor stator, remove power cord leads from terminal bushings on top of motor. If stator is visibly burned, motor assembly must be replaced.
Ground check on stator should be performed using ohmmeter with scale set at R X 100. Connect one meter lead to one terminal of stator and touch other meter lead to motor stator shell. A zero reading indicates a direct short, and the stator will have to be replaced.
A winding resistance test should be performed if the ground test is satisfactory. Use ohmmeter with scale set at R X 1. Connect one meter lead to the white wire terminal and the other meter lead to the black wire terminal. This reading is for the main winding (1ø). If the readings obtained do not agree with those given below, consult the factory.
Pump Voltage| 1ø Start Winding| 1ø Run Winding| 3ø Bal.
---|---|---|---
230 V| 3.53 Ω| 1.78 Ω| 6.65 Ω
460 V| –| –| 6.65 Ω
200 V| –| –| 3.4 Ω
575 V| –| –| 27.97 Ω

. For 3ø pumps, remove the power cord assembly (27) by cutting the butt connections and removing the power cord from the pump.

Twist the three leads of one end of the power cord together. Then at the other end, with an ohmmeter, check any two leads. Also check the third lead with either of the first two. If a zero reading is indicated for any wire, the wire is broken and a new power cord assembly must be installed.

Seal Housing

The pump is equipped with two mechanical seals mounted in tandem. The lower seal (20) and the upper seal (8) consist of a ceramic stationary seat and a carbon rotating ring.
As noted, if water is detected in the motor housing, inspect the power cord connection, pipe plug connections, O-rings, the motor housing itself, and the two mechanical seals.
To check the seals, remove the seal housing pipe plug (11) and pour the oil out into a clean glass container. Look for the milky color as noted previously.
If the oil is clear, the lower seal is still good. If this seal is damaged, water will seep in and continue to stain the oil, changing it gradually from clear to a milky white. Then the lower seal and oil must be replaced.
Except for very rare instances, the motor will continue to be protected by the upper mechanical seal. If seal probe is used the pump will not shut off when water in the oil is sensed. However, if connected to a control panel, an alarm or light will be activated. The panel alarm will show failure.

Lower Seal

If water is found in the seal chamber, the lower seal must be replaced. Separate the volute by removing the screws (7) holding the volute case (10) to the upper volute.
Insert a large screwdriver in the slotted pump shaft and strike the impeller sharply with a plastic or rubber headed hammer. The impeller should spin free. The impeller holds the rotation carbon ring of the lower mechanical seal against the stationary ceramic seat by compressing a stainless steel spring.
When the impeller is removed, the spring will relax, allowing the carbon ring to be removed. There is a rubber sleeve (bellows) inside the spring which grips the pump shaft. This often restricts the spring and must be pried or pulled loose.
With the carbon ring, spring, and rubber sleeve removed, wedge the ceramic seat out of the housing. Be sure not to scratch or mar the pump shaft.

Upper Seal

To remove and replace the upper mechanical seal (8), the volute base (10), impeller (16), and lower mechanical seal (20) must be removed first. Drain the seal oil from the housing by removing pipe plug (11).
The rotating carbon ring and stainless steel spring are held in place by a snap ring (21) and washer (15). Remove these items.
Remove the four hex head stator bolts and lift the motor (5) from the seal plate (14). A screwdriver can be inserted under the stator shell in order to remove the stator.
Tap the end of the shaft with a plastic hammer. This will push the rotating half of the mechanical seal (20) from the shaft and also push the lower bearing from the seal plate (14). Now remove the shaft, rotor, and bearing assembly from the seal plate.
If water is found in the oil, both the rotating and stationary halves of the mechanical seal (20) must be replaced. Remove the stationary seal half by inserting a screwdriver into seal plate (14) from the top and tapping lightly with a hammer.
Turn the bearing by hand and if it feels rough when turned or looks rusted, it should be replaced. Use a bearing puller to remove the bearing.

Reassembly

Thoroughly clean the seal plate, particularly the seal and bearing pockets. All sand and dirt must be removed.
If the stationary seal half (8) was removed, wet the seal components with clean oil. Use a plastic pusher to press the stationary seal into the housing. Make sure the rubber ring goes in first. Do not use any sharp objects that may damage the seal.
When installing a replacement bearing, press only on the inner face and make sure the bearing is flush against the snap ring. If a press is not available, the bearing can be tapped onto the shaft using a sleeve that bears only on the inner face. Pressing on the outer face will ruin the bearing.
Push the shaft, rotor and ball bearing assembly into the seal plate, being careful not to chip the ceramic of the stationary seal half.
Replace the motor (5) if it is visibly burned or if the ground resistance test or the winding resistance test has failed. Note that the replacement stator must be of the same manufacture as the existing rotor, or vice versa. Replace the four stator bolts.
and replace. Place the new O-ring over the seal plate shoulder. Do not ‘roll” it. If twisted, water may enter chamber and cause failure.
Clean the motor housing (2) thoroughly, then position it onto the seal plate.
Press the rotating seal half (20) onto the shaft with the rubber ring facing the impeller.
NOTICE Mixing old and new seal parts will cause immediate seal failure. When replacing seal, replace both the rotational and the stationary seal halves.
Reassemble the lower seal as described.
To check seal probe, if equipped, use an ohmmeter to measure resistance and check continuity. If meter reads zero then replace probe (23). Check probe sensor wire (22) for opens using the ohmmeter. If reading is zero the wire is OK. For shorts place lead on the motor housing, making sure bare metal surface is used. Place the other lead on the bared end (26) of the probe lead (22). Reading should be infinity (∞). If reading is zero then replace seal probe lead.
Add a drop of 2Locktite® 243 to the impeller threads and screw the impeller (16) on hand tight. The impeller will force the rotating seal half (20) into position. 2 Henckel Corporation, Germany
Set the seal housing and motor housing assembly into the volute case (10) and secure with screws (7).
To replace the power cord on 1ø pumps, first slip the stator lead wires through the holes in the wire seal assembly. Coat the cord grip threads with PTFE pipe thread sealant tape and screw the new power cord assembly into the motor housing. Referring to wiring diagrams in this manual, secure wires together with wire nuts.
NOTICE Do not tape leads together as the hot oil will deteriorate the tape and cause failure.
Before filling the motor housing with oil, a seal leak test should be performed. Apply 7 to 8 pounds of air pressure in the 1⁄4″ NPT tap (9) on the top of the motor housing.
NOTICE Too much pressure will damage the seal. Seal would have to be replaced.
Then submerge the pump in water and check for leaks. If a leak occurs, isolate where it is coming from and correct the problem by replacing the sealing part.

Oil fill

After seal leak test is satisfactory, remove unit from water and wipe or blow off any excess water.
Do not put oil in motor with any water present in motor cavity.
Use refined paraffinic transformer oil, 3Shellflex™ 2210 or equivalent. 3 Shell Oil Company, Texas
Slowly fill oil to 1/8″ over windings in motor housing through opening (9). Use an oil fill tube that will go into holes so that air can escape. Replace plug (9).
NOTICE Do not fill the motor housing completely – allow air space for expansion.
Connect power cord wires to terminals in panel, or connect power source, and check pump running. Motor should run smoothly and be free of vibration. Pump is ready for operation.

Troubleshooting

Hazardous voltage. Can shock, burn, or kill. Disconnect power before attempting any service or repair work on pump.

Hazardous impellers and unexpected starts which can cause loss of fingers. Keep hands away from pump suction inlet when working on or servicing pump.

Symptom	Possible Cause(s)	Corrective Action
Motor not running	Motor protector tripped.	Allow motor to cool. Make sure

pump is completely submerged. Clear debris from volute and impeller. Check for high amp draw.
Open circuit breaker or blown fuse.| Replace fuse or reset breaker. If circuit breaker opens repeatedly, don’t reset it – call a licensed electrician.
Impeller clogged or binding.| Check amp draw. If it is more than twice the nameplate amps, the impeller is locked. Bearings and shaft may be damaged. DISCONNECT POWER, clear debris from volute, impeller, and cutter as needed.
Power cable damaged.| Resistance between power cable and ground should be infinity. If any reading is less than infinity, call a licensed electrician.
Bad control panel.| Inspect control panel wiring. Call a licensed electrician.
Defective liquid level switch.| With switch disconnected from power, check continuity through switch while activating liquid level switch. Replace switch if necessary.
Not enough liquid in wet well to activate controls.| Allow the liquid to rise several inches above the switch-on level.
Liquid level cords tangled| Untangle cords for free operation.
Automatic controls defective| Try running pump in manual mode. If it runs, the automatic control is at fault.
Pump runs continuously| Liquid level control cords tangled| Untangle cords for free operation.
Pump is airlocked.| Stop pump for about one minute, then restart. Repeat stopping and starting until the airlock clears. If the airlock persists, DISCONNECT POWER, pull the pump and drill a 1/8” hole in the discharge pipe between the pump discharge and the check valve.
Flow in matches or exceeds the pump’s capacity.| A larger pump or more pumps may be needed.
Little or no effluent delivered from pump| Check valve plugged, stuck shut, or installed backwards.| Make sure check valve is installed correctly (flow arrow should point away from pump) and functioning correctly.
System head excessive.| Consult dealer.
Pump suction plugged.| DISCONNECT POWER, pull pump, inspect, and clear as needed.
Wrong voltage or not wired correctly.| Check pump’s rotation; check nameplate voltage against supply voltage (they must match); consult a licensed electrician.
Pump is air locked.| Stop pump for about one minute, then restart. Repeat stopping and starting until the airlock clears. If the airlock persists, DISCONNECT POWER, pull the pump and drill a 1/8” hole in the discharge pipe between the pump discharge and the check valve.
Worn or damaged impeller.| DISCONNECT POWER, pull pump and inspect impeller. Replace if necessary.
Liquid level controls incorrectly installed or defective.| Reposition or replace as necessary.
Pump cycles constantly| No discharge check valve installed.| Install discharge check valve.
Discharge check valve stuck open.| Repair or replace check valve as necessary.
Sewage wet well too small.| Consult dealer.
Liquid level controls incorrectly installed or defective.| Reposition or replace as necessary.
Pump too small for inlet flow.| Consult dealer about larger pump or second pump.

Repair Parts

Ref.| Description| Part Number 1ø| Part Number 3ø| Qty.
---|---|---|---|---
1| Handle| 000600005| 1
2| Housing, Motor| 000565002| 1
3| Capacitor (1ø, 230V)| 132080011| n/a| 1
4| Solid State Switch (1ø, 230V)| 132090031| n/a| 1
5| Motor Assemly| 126900001| 126910001| 1
7| Screw, Hex Hd.| 001010151| 3
8| Shaft Seal-Upper| 170480001| 1
9| Pipe Plug, 1/4 NPT| 149810011| 1
10| Volute Case| 096410002| 1
11| Pipe Plug, 1/8 NPT| 000870041| 1
12| Screw Rd. Hd.| 000250161| 3
13| Housing, Bearing/Seal| 075790012| 1
14| Plate, Bearing/Seal| 068460042| 1
15| Washer| 001560521| 1
16| Impeller| 096400003| 1
17| Locktite Sealant| *| 1
18| Washer, Impeller (3ø only)| n/a| 005180011| 1
19| Screw, Impeller (3ø only)| n/a| 001110081| 1
20| Shaft Seal-lower| 000830021| 1
Shaft Seal-lower| 000830071| 1
21| Snap Ring| 009750011| 1
22| Wire Terminal Assembly| 060000561| 1
23| Seal Failure Sensor| 084720065| 1
24| O-Ring| 000770031| 1
26| Splice Connector| 12672A001| 1
27| Power Cord Assembly, 20’ w/ plug,1ø only| 132160225| n/a| 1
Power Cord Assembly, 20’| 116440895| 116440185| 1
28| Connector (3øm 230V/460V)| n/a| 000730011| 4

Warranty

Limited Warranty

HYDROMATIC warrants to the original consumer purchaser (“Purchaser” or “You”) of HYDROMATIC Sump Pumps, Effluent Pumps, Sewage Pumps (other than 2-1/2”), and Package Systems, that they will be free from defects in material and workmanship for the Warranty Period of 36 months from date of manufacture.
Our warranty will not apply to any product that, in our sole judgement, has been subject to negligence, misapplication, improper installation, or improper maintenance. Without limiting the foregoing, operating a three phase motor with single phase power through a phase converter will void the warranty. Note also that three phase motors must be protected by three-leg, ambient compensated, extra-quick trip overload relays of the recommended size or the warranty is void.
Your only remedy, and HYDROMATIC’s only duty, is that HYDROMATIC repair or replace defective products (at HYDROMATIC’s choice). You must pay all labor and shipping charges associated with this warranty and must request warranty service through the installing dealer as soon as a problem is discovered. No request for service will be accepted if received after the Warranty Period has expired. This warranty is not transferable.
EXCEPTIONS: Hydromatic Special Application Pumps, Battery Back-Up Sump Pumps, Filtered Effluent Pumps, Grinder Pumps, and 2-1/2” Sewage Pumps are warranted for a period of 12 months from date of purchase or 18 months from date of manufacture, whichever comes first.
HYDROMATIC SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT DAMAGES WHATSOEVER.
THE FOREGOING LIMITED WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE FOREGOING LIMITED WARRANTIES SHALL NOT EXTEND BEYOND THE DURATION PROVIDED HEREIN.
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on the duration of an
implied warranty, so the above limitations or exclusions may not apply to You. This warranty gives You specific legal rights and You may also have other rights which vary from state to state.
This Limited Warranty is effective June 1, 2011 and replaces all undated warranties and warranties dated before June 1, 2011.

Specifications

Product Specifications

Model Family	SKHD150
Typical Application:	Effluent, dewatering
Capacities:	up to 54 GPM (45 LPM)
Heads:	up to 127’ ft (38.7 m)
Electrical:	208V, 1ø, 6.1 FLA, 60Hz; 230V, 1ø, 12 FLA, 60Hz; 230V, 3ø, 6 FLA,

60Hz;

460V, 3ø, 2.5 FLA, 60Hz; 575V, 3ø, 2 FLA, 60Hz

Motor:| 1-1/2 HP (capacitor start on single phase), 3450 RPM
Intermittent Liquid Temperature:| 140°F (60°C)
Minimum Recommended Sump Diameter:| Simplex = 24″ (609.6 mm); Duplex = 36″ (914.4 mm)
Automatic Operation:| No switch standard. Wide-angle Tethered Switch optional for 1ø
Materials of Construction:| Class 30 cast iron
Impeller:| Thermoplastic semi-open
Discharge Size:| 1-1/2” NPT (3.81 cm)
Solids Handling:| 3/4” (19 mm)
Power Cord:| 20’ STW-A