Page 19
Jandy
®
JCP Series High Performance Commercial Pumps
|
Installation & Operation Manual
ENGLISH
Symptom
Possible Cause
Solution
Motor does not turn
No power to motor.
Verify all breakers are on and not in the overload position.
If the pump is being controlled by a VFD, ensure the
controller is on and giving power to the motor.
Thermal protector tripped
Check the temperature of the motor, if the motor is hot the
thermal protector may have turned the motor off.
The motor is improperly connected
Check the wiring diagram and verify the configuration
needed for the power source.
Drive shaft seized
With all power off to the motor, turn the motor's drive shaft
manually. The drive shaft should spin freely by hand
without catching or dragging. If the drive shaft does not
spin freely, disassemble the pump and repair.
Low flow
Dirty filter.
Clean filters when the back pressure is high.
Dirty skimmer basket.
See problem 1.
Suction air leak.
Closed valves or blocked lines.
Pump spinning backwards
Motor runs hot
Low voltage or incorrect voltage.
Have a certified electrician check the voltage at the motor.
The voltage at the motor must be within 10% of the
nameplate voltage. If the voltage is outside of this range,
contact the local power provider.
Incorrect wiring, phase unbalance
Verify the wiring diagram matches the configuration used
for the power supply. Verify current on all phases are
nearly identical. If a phase current is notably higher than
the others, the motor is operating with phase unbalance.
Turn off the motor and check the wiring connections for
frayed, broken, or partial conductor connections. Cut and
restrip leads if necessary. Verify voltage between each
phase. The voltage variation between phases should be
no larger than 5%. If the connections are secure, phase
voltage is similar, and a phase unbalance is still present,
the motor winding insulation may be damaged and the
motor must be repaired or replaced.
Undersized wire
Increase the wire gauge for all leads going to the motor.
Installed in direct sun.
It is best to keep the pump sheltered from direct sunlight.
Poor ventilation.
Do not enclose the pump in a small location with minimal
free air flow. Make sure that there is adequate room
around the motor to circulate air and keep the motor cool.
