Troubleshooting - Pentair Pentek Series Electronic Manual

SECTION 6: Pentek

6.11 Troubleshooting

Problem
Motor does not start, but does not
blow fuses or trip circuit breaker
Motor starts, but fuses blow or
circuit breakers trip
Motor starts and runs, then blows
fuse or trips circuit breaker
Motor does not start, but fuse
blows or circuit breaker trips
6" Submersible Motors
®
Possible Causes
Defective fuses or circuit breakers
Loose or corroded terminals
Damaged or defective connections
No incoming power
Wrong voltage
Incorrect fuses or relay
Incorrect connections
Locked rotor or pump
Insufficient insulation on motor
cables
Incoming voltage more than 10% high
or low sand in well
Locked rotor or pump
Solution
Replace fuses or circuit breakers.
Clean and tighten connections and
motor lead terminals.
Repair or replace connections.
Contact power company.
Make sure that nameplate rated
voltage matches nominal power
supply, and that actual supply voltage
is within ±10% of nameplate voltage.
Install correct fuses or relay.
Re-connect motor wires correctly.
Make sure that motor is at least 10ft
above bottom of well, check well for
sand.
Install new motor cables; recheck
resistance with Megohmeter.
Confirm high or low voltage in motor
cable, consult power company.
Pull the pump and clean the well.
Check for sand in well.
Make sure that motor is at least 10ft
above the bottom of the well.
Pull pump and check for mechanical
obstruction in the pump and for free
rotation of the motor.
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