V4.0
5 HP Open Drip Proof Electric Motor
8714040
Visit www.princessauto.com for more information
11
Problem(s)
Possible Cause(s) Suggested Solution(s)
Fuse/circuit
breaker
overloads.
There is a blown
fuse or open circuit
breaker.
Test for voltage at the fuse or circuit breaker. Also
see if the voltage/amp rating of the fuse or circuit
breaker is correct for the motor. It should exceed
the Motor’s FLC by 25 percent.
Motor starter
overload activated.
Let cool and then reset overloads. Test the starter
before starting motor again.
Low or no voltage
reaching motor.
Check each motor terminal’s voltage. The voltage
should be within 10% of the voltage on the
motor’s nameplate. Disconnect the load and apply
power to the motor. If the motor operates
normally, then the issue is with the load attached
to the motor. Should the motor still not work,
have it serviced or replaced by a qualified
technician.
Power enters
control circuit but
does not reach the
motor.
1. Begin by confirming all contacts are clean
and tight. Examine for obvious damage.
2. Test each part of the circuit for power until
the problem area is discovered.
3. Have a qualified service technician repair or
replace the circuit.
Motor shaft does
not turn when
power applied.
Disconnect the motor from the load and test under
no-load conditions. If the shaft does not turn, the
bearing are immobilized. Have the motor serviced
or replaced by a qualified technician.
