PENTAIR MY99637 Submersible Wastewater Motor User Manual

: June 15, 2024
: Pentair

Table of Contents

MYERS
SUBMERSIBLE WASTEWATER MOTOR FIELD TEST PLAN

MYERS

SUBMERSIBLE WASTEWATER MOTOR FIELD TEST PLAN

SAFETY INFORMATION

SAFETY SYMBOLS

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:
DANGER warns about hazards that will cause serious personal injury, death or major property damage if ignored.
WARNING warns about hazards that can cause serious personal injury, death or major property damage if ignored.
CAUTION warns about hazards that will or can cause minor personal injury or property damage if ignored.

The word NOTICE: indicates special instructions that are important but not related to hazards.
California Proposition 65 Warning
WARNING This product and related accessories contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

DANGER CUTTING RISK. Risk of serious cutting or amputation exists. Use caution as liner plate is extremely sharp. Always keep fingers and hands away from cutting profiles. Disconnect all power sources prior to servicing pump. Pump may start without warning.
DANGER RISK OF ASPHYXIATION. Installer(s) and/or service personnel must use proper Personal Protective Equipment and follow OSHA 29 CFR 1910.146 or OSHA 29 CFR 1926. Pump may be installed in a location classified as a confined space.
DANGER BIOHAZARD RISK. Once wastewater source has been connected to system, Biohazard Risk exists. Installer(s) and/or service personnel must use proper personal Protective Equipment and follow handling procedures per OSHA 29 CFR 1910.1030 when handling equipment after wastewater source has been connected to system.
NOTICE: FM rated models are only to be used in 60hz applications.

GENERAL SAFETY

CAUTION Do not touch an operating motor. Modern motors can operate at high temperatures. To avoid burns when servicing pump, allow it to cool for 30 minutes after shutdown before handling.
Follow all applicable local and state codes and regulations.
Submersible pumps are not approved for and should not be used in swimming pools, recreational water installations, decorative fountains or any installation where human contact with the pump fluid is common. Pump is designed for municipal and commercial wastewater applications.
Keep safety labels in good condition, replacing any missing or damaged labels.
DO NOT run the pump dry. Dry running can overheat the pump, (causing burns to anyone handling it) and will void the warranty.
The pump is permanently lubricated. No oiling or greasing is required in normal operation.
Periodically inspect pump and system components.
Wear safety glasses at all times when working on pumps.
Keep work area clean, uncluttered and properly lighted. Store all unused tools and equipment.
DO NOT use to pump flammable liquids.
DANGER RISK OF FIRE OR EXPLOSION. Can cause severe personal injury, property damage or death. Do not smoke or use open flames in or around this system.

ELECTRICAL SAFETY

DANGER Hazardous voltage. Can shock, burn, or kill. When installing, operating, or servicing this pump, follow the safety instructions listed below.

DANGER ELECTROCUTION HAZARD: Must be installed by a qualified professional. Disconnect all electrical power before attempting service.
DO NOT modify the cord. When wiring to a system control, connect ground lead to the system ground.
DO NOT splice the electrical power cord.
DO NOT allow the power leads on the end of the electrical cords to be submerged.
DO NOT handle or service the pump while it is connected to the power supply.

WARNING A water test must be taken before installation of any water treatment equipment. The water quality can significantly influence the life of your system. You should test for corrosive elements, acidity, total solids and other relevant contaminants, including chlorine and treat your water appropriately to ensure satisfactory performance and prevent premature failure.

Tools Required:

Multi-Meter, Clamp-on Amp meter, Meg-Ohm meter, screw drivers, small hand tools, lock-out/tag-out devices.

DANGER WARNING – Risk of severe electrical shock or electrocution. May result in serious injury or death or fire hazard. Only qualified personnel may install this system. Reasonable care and safe methods relating to the installation and operation of this product should be practiced. NFPA 70/National Electric Code (NEC) or local codes must be followed. System must be properly grounded according to NEC. Keep basin cover closed, except when removing pump.

1. STATION DATA:

Address:

b. Contacts:

c. Condition of station:

d. Reason for inspection:

e. Date of inspection:

2. UNIT DATA:

Serial Number:

Model & Size:

Nameplate info:

3. Are you a qualified electrician?
If yes proceed, if no, stop

4. Is Station power supply 3 phase or 1 phase?
a. For 1 phase – skip to step 8

4. Current draw test - 3 phase.
a. Power off H-O-A switch in off position open cabinet door
b. Obtain motor Full Load AMPS from motor nameplate information, see panel data
c. Place clamp on amp meter on one motor lead
d. Place H-O-A switch in H position and read amps, record.
e. Repeat for other two leads.
f. Is current draw within nameplate specification?
i. Yes no problem
ii. No- Motor shorted or grounded or physically locked up - go to step 5
g. Is current balanced across all 3 legs or is no current flow present on 1 or more legs?
i. Yes - No Problem
ii. No - Motor windings likely open or grounded, go to step 5

5. Motor resistance to ground test . Use Meg ohm meter set on 500 volts
a. Disconnect station power, turn off breaker(s), lock-out/tagout, make safe.
b. Mark and remove motor leads T1, T2, T3, Heat Sensor and Seal Leak probe(s)
CAUTION : IF T1, T2, T3 are not re-installed in the same locations, rotation will be reversed, potentially resulting in damage to pump and/or other system components.
c. Connect ground lead of meter to a good ground in panel
d. Test each motor lead separately against ground, test the individual seal probe(s) against ground, test individual heat sensors against ground. Do NOT TEST ACROSS HEAT SENSOR LEADS. HEAT SENSOR CAN BE DESTROYED.
e. Is resistance to ground greater than local code or Ieee-43 Standard (1 megohm + 1 meg per 1000 motor volts, i.e. for a 460 volt motor 1 meg + 460/1000 = 1.46 Meg-Ohms
i. Was resistance to ground greater than minimum specification?

1. No - motor grounded - pull motor for service
2. Yes – Go to step 6.

6. Motor resistance test for shorts or opens. Use VOM Ohm Meter set on lowest scale.
a. Use Ohm meter, read motor resistance
i. connect leads across black and white motor leads, record resistance.
ii. Repeat for black to red and black to white.
iii. Are all 3 combinations balanced resistance?
1. Yes - confirm motor resistance with O&M manual or RFT for specifications
2. No - motor is open or shorted. Verify continuity to determine if open. Pull pump and motor for service.
iv. connect leads across heat sensor leads.
1. Are heat sensor contacts Closed (less than .5 ohms)?
a. Yes - Go to 5
b. No - heat sensor open, Pull pump and motor for service.

7. If all above checks are complete and no other electrical problems are found, the pump shaft is likely locked up, (pump jammed, bearings locked, etc.)
a. Pull pump and motor for Service.

8. Current draw test 1 (single) phase.
a. Power off, H-O-A switch in off position open cabinet door
b. Obtain motor Full Load AMPS from motor nameplate information, see panel data
c. Place clamp on amp meter on BLACK (COMMON) motor lead
d. Place H-O-A switch in H position and read amps, record.
e. Is current draw within nameplate specification?
i. Yes - no problem
ii. No- Motor shorted or grounded or physically locked up go to step 7

9. Motor resistance to ground test - 1 Phase -. Use Meg ohm meter - set on 500 volts
a. Disconnect station power, turn off breaker(s), lock-out/tagout, make safe.
b. Mark and remove motor leads B, W, R, Heat Sensor and Seal Leak probe(s)
c. Connect ground lead of meter to a good ground in panel
d. Test each motor lead separately against ground, test the individual seal probe(s) against ground, test individual heat sensors against ground. Do NOT TEST ACROSS HEAT SENSOR LEADS. HEAT SENSOR CAN BE DESTROYED.
e. Is resistance to ground greater than local code or IEEE-43 Standard (1 megohm + 1 meg per 1000 motor volts, i.e. for a 230 volt motor 1 meg + 230/1000 = 1.23 Meg-Ohms
i. Was resistance to ground greater than minimum specification?
1. No motor grounded pull motor for service
2. Yes – go to Step 8

10. Motor resistance test for shorts or opens 1 Phase. Use VOM Ohm Meter set on lowest scale.
a. Disconnect station power, turn off breaker(s), lock-out/tagout, make safe
b. Mark and remove motor leads B,W,R, Heat Sensor and Seal Leak probe(s)
c. Use Ohm meter, read motor resistance
i. connect leads across black and white motor leads, record resistance.
ii. Repeat for black to red and white to red combinations.
iii. Is B-W lowest, B-R middle and W-R Highest Reading?
1. Yes - confirm motor resistance with O&M manual or RFT for specifications. If correct, continue testing
2. No - one or more of the windings is open or shorted. Verify continuity to determine if open. Pull pump and motor for service.
iv. connect leads across heat sensor leads.
1. Are heat sensor contacts Closed (less than .5 ohms)?
a. Yes - Go to 9
b. No - heat sensor open, Pull pump and motor for service.

11. If all above checks are complete and no other electrical problems are found, the pump shaft is likely locked up, (pump jammed, bearings locked, etc.)

a. Pull pump and motor for Service.

12. End Test Plan.

1101 Myers Parkway
Ashland, OH 44805
Ph: 855.274.8947
Fx: 800.426.9446

490 Pinebush Road, Unit 4
Cambridge, Ontario, Canada N1t 0a5
Ph: 800.363.7867
Fx: 888.606.5484

pentair.com/myers

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.

MY99637 (11-13-23)