Power Fist 9175399 Manuel D'utilisation page 10

9175399
Problem(s)
Motor will not
start.
10
1/4 HP Furnace Electric Motor
Possible Cause(s)
1. There is a blown
fuse or open circuit
breaker.
2. Motor starter
overload activated.
3. The thermal switch
is open.
4. Low or no voltage
reaching motor.
5. Power enters
control circuit but
does not reach the
motor.
Suggested Solution(s)
1. 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.
2. The thermal protector will
automatically reset and the motor will
function normally again once it has
cooled. Test the starter before
starting motor again.
3. The thermal protector will
automatically reset and the motor will
function normally again once it has
cooled. Beware as the motor may
automatically start when reset.
4. 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.
5. Begin by confirming all contacts
are clean and tight. Examine for
obvious damage.
a. Test each part of the circuit for
power until the problem area is
discovered.
b. Have a qualified service technician
repair or replace the circuit.
For technical questions call 1-800-665-8685
V4.0