PENTAIR CMV5 Sewage Pump User Manual

SEWAGE PUMP
MODEL CMV5

INSTALLATION AND
OPERATION MANUAL
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SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS: This manual contains important instructions that should be followed during the installation, operation, and maintenance of the product.  Carefully read and follow all safety instructions in this manual.
IMPORTANT SAFETY TERMINOLOGY

indicates a hazard that, if not avoided, will result in death or serious injury.
indicates a hazard that, if not avoided, can result
in death or serious injury.
indicates a hazard that, if not avoided, can or may result in minor or moderate injury.
NOTE addresses practices not related to personal injury.
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.

SPEC CHART

MODEL #| HP| MAX GPM| MAX LIFT(FT)| DISCHARGE| SOLIDS
HANDLING| VOLTAGE| FLA| PHASE| CORD
LENGTH| FLOAT
SWITCH
---|---|---|---|---|---|---|---|---|---|---
CMV5A-11
CMV5M-11| 1/2| 87| | 2″| 2″| 115| 12| 1| 20′| PT
M

INSTALLATION

IMPORTANT INSTRUCTIONS BEFORE INSTALLATION
Failure to follow these instructions may cause serious bodily injury and/or property damage.
Risk of electrical shock – This pump is supplied with a grounding conductor and grounding-type attachment plug. To reduce the risk of electrical shock, connect only to a properly grounded grounding-type receptacle. This pump has not been investigated for use in swimming pool/fountain areas. Read instructions before installing the pump.

1. Before installing or servicing your pump, BE CERTAIN if the pump power source is disconnected.
2. Installation and electrical wiring must adhere to state and local codes and must be completed before priming the pump. Check appropriate community agencies, or contact local electrical and pump professionals.
3. CALL AN ELECTRICIAN WHEN IN DOUBT. The pump should be connected to a separate 15 amp circuit breaker or 15 amp fuse block. Plugging into existing outlets may cause the low voltage at the motor, causing blown fuses, tripping of motor overload, or burned-out motor.
4. A permanent grounded connection from the pump to the grounding bar at the service panel is mandatory. The pump comes with a grounding conductor and a grounding type attachment plug. Do not connect the pump to a power supply until permanently grounded. For maximum safety, ground pump to a circuit equipped with a fault interrupter device.
5. The voltage of the power supply must match the voltage of the pump.
6. Before installing the pump, clear the basin of any water, debris, or sediment. WARNING: Basin must be vented in accordance with local plumbing codes. Myers sewage pumps are not designed for and CAN NOT be installed in locations classified as hazardous in the National Electric Code, ANSI/ NFPA 70.
7. The basin should be 18″ in diameter and made of plastic, fiberglass, or concrete. It must be equipped with a gasket, properly vented cover. Consult local plumbing codes for correct vent size.
8. The following may cause severe damage to the pump and will void the warranty:
   • Using an extension cord.
   • Cutting off the ground pin or using an adapter fitting.
   • Working on pump or switch while plugged in.
   • Removing motor housing, unscrewing impeller, or otherwise removing impeller seal.
   • Running the pump continuously.
   • Pumping chemicals or corrosive liquids.
   • Pumping gasoline or other flammable liquids.

INSTALLATION
Be certain the basin is clean and all power to the pump is shut off.
General materials needed:

•  One can PVC cement (read instructions carefully)
•  Three 2″ male PVC adapters.
•  Enough 2″ rigid PVC pipe and couplings to reach from the bottom of the sump basin to discharge.
• One 2″ PVC elbow.
•  One 2″ free-flow check valve #CV-200P.
• One shut-off gate.
• Basin with gasketed cover and vent.
• Tools needed for all pump installations:
• Pipe wrench
•  Slot screwdriver
• 24-tooth hacksaw, knife or round file

1.  Thread one 2″ male PVC adapter into the pump discharge opening. NOTE: DO NOT use thread compound or overtighten adapter or discharge pipe. Cement enough  PVC pipe and couplings onto the adapter to reach out of the sump basin.
2. Lower pump into sump basin as near to the center as possible. Cement 2″ PVC elbow onto the open end of the discharge pipe. Cement a section of 2″ PVC pipe to open end of the elbow.
3. Fasten the check valve onto the open end of the discharge pipe. Thread a 2″ male PVC adapter into either side of the 2″ shut-off gate valve.
4. Fasten the open the end of the check valve onto a section of PVC pipe. Cement open end of PVC pipe onto 2″ shut-off gate valve with male PVC adapters.
5. Cement final section of PVC pipe to open end of shut-off gate valve. Fill sump basin with water and plug-in pump. The pump should turn on at approximately 15″ water level. Perform several ON-OFF cycles to assure satisfactory operation.
6. Install gasket cover and vent onto the basin.

REPAIR PARTS INDEX

REPAIR PARTS LIST

TROUBLESHOOTING

CAUTION: SHUT OFF POWER TO PUMP

fuse is blown or loose.
⬥     The water level in the sump has not reached the turn-on level as indicated in the installation drawing.
⬥     The pump cord is not making contact with the receptacle.
⬥     The float is stuck. It should operate freely in the basin.
⬥     If all the above are OK, then the motor winding may be open.
The pump runs but does not deliver water.| ⬥     The check valve is installed backward. The arrow on the valve should point in direction of flow.
⬥     The discharge shut-off valve (if used) may be closed.
⬥     The pump is air-locked. Start and stop several times by plugging and unplugging the cord.
Check for a clogged vent hole in the pump case.
⬥     Impeller or volute openings are fully or partially clogged. Remove pump and clean.
⬥     Inlet holes in the pump base are clogged. Remove the pump and clean the openings.
⬥     The vertical pumping distance is too high. Reduce distance or resize the pump.
Pump runs and pumps out the sump, but does not stop.| ⬥     The float is stuck in the up position. Be sure float operates freely in the basin.
⬥     Defective float switch. Replace the float switch.
The pump runs but delivers only a small amount of water.| ⬥     The pump is air-locked. Start and stop several times by plugging and unplugging the cord. Check for a clogged vent hole in the pump case.
⬥     The vertical pumping distance is too high. Reduce distance or resize the pump.
⬥     Inlet holes in the pump base are clogged. Remove the pump and clean the openings.
⬥     Impeller or volute openings are fully or partially clogged. Remove pump and clean.
⬥     The pump impeller is partially clogged with foreign matter, causing the motor to run slow and overload. Remove pump and clean.
Fuse blows or circuit breaker trips when the pump starts.| ⬥     The pump impeller is partially clogged with foreign matter, causing the motor to run slow and overload. Remove pump and clean.
⬥     The motor stator may be defective.
⬥     The fuse size or circuit breaker may be too small. Must be 15 amps.
⬥     Impeller or volute openings are fully or partially clogged. Remove pump and clean.
Motor runs for a short time and then stops.| **** ⬥     Inlet holes in the pump base are clogged. Remove the pump and clean the openings.
⬥     The pump impeller is partially clogged with foreign matter, causing the motor to run slow and overload. Remove pump and clean.
⬥     The motor stator may be defective.
⬥     Impeller or volute openings are fully or partially clogged. Remove pump and clean.

WARRANTY

Limited Warranty
Myers® warrants to the original consumer purchaser (“Purchaser” or “You”) of the products listed below, that they will be free from defects in material and workmanship for the Warranty Period shown below.

Product| Warranty Period
whichever occurs first:
---|---
Jet pumps, small centrifugal pumps, submersible pumps and related accessories| 12 months from the date of original installation, or 18 months from the date of manufacture
Fibrewound Tanks| 5 years from the date of original installation
Steel Pressure Tanks| 5 years from the date of original installation
Sump/Sewage/Effluent/Utility/Battery Backup Products| 36 months from date of manufacture
Wastewater Solids Handling Pumps| 12 months from the date of shipment from the factory or 18 months from the date of manufacture

Our warranty applies only where such products are used in compliance with the requirements of the applicable product catalog and/or manuals. For additional information,  please refer to the applicable standard limited warranty featured in the product manual.
Our warranty will not apply to any product that, in our sole judgment, 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 are void.
Your only remedy, and MYERS’s only duty, is that MYERS repair or replace defective products (at MYERS’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.
MYERS 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 January 1, 2021, and replaces all updated warranties and warranties dated before January 1, 2021.

PENTAIR MYERS
293 Wright Street, Delavan, WI 53115
Phone:888-987-8677 • Fax: 800-426-9446 • www.femyers.com
In Canada: 490 Pinebush Road, Unit 4, Cambridge, Ontario N1T 0A5
Phone:800-363-7867 • Fax: 888-606-5484

    AMERICAS
1101 Myers Parkway
Ashland, Ohio 44805
PH: 855-274-8947
CANADA
490 Pinebush Road,
Unit 4
Cambridge, Ontario,
Canada N1T 0A5
PH: 800-363-7867
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.
MY23833A314 (04-01-21) ©2021 Pentair. All Rights Reserved.

References

• Myers | Municipal Commercial & Industrial Pumps | Pentair

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