8
Circuit breaker trips when
pump tries to start.
1. Short circuit in pump motor.
2. Water may have entered the
motor housing through either
worn out mechanical seals or
O-rings.
3. Contactor failure for three
phase pumps. Check pump
contactor for burnt contacts.
4. Start component(s) failure for
single phase pumps. Check
Pump
Troubleshooting
start capacitor and start relay
for failure.
5. Single phase pump may be
miswired to panel. The white,
black, and red pump power
leads must be connected
correctly to panel.
Overload trips, is manually
reset, and then trips off again.
1. Cutters may be clogged. It
is possible that the pump
stalled during operation, and
starting and stopping cleared
the cutters. If resetting the
overloads solves this problem,
return the H-O-A switch to
Auto and observe operation.
2. Pump motor may have failed.
3. Start component(s) failure for
single phase pumps. Check
start capacitor and start relay
for failure.
4. Single phase pump may be
miswired to panel. The white,
black, and red pump power
leads must be connected
correctly to panel.
TYPICAL INSTALLATIONS
