F238006
81
Section 5 Service Procedures
To reduce the risk of electrical shock, fire, explosion, serious injury or death:
• Disconnect electrical power to the washer-extractor before servicing it.
• Close the gas shut-off valve to the washer-extractor (when applicable) before servicing it.
• Never start the washer-extractor with any guards/panels removed.
• Whenever ground wires are removed during servicing, these ground wires must be
reconnected to ensure that the washer-extractor is properly grounded.
W461R1
WARNING
© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT
32. DRIVE MOTOR
All motors for UWPV model machines are dual-
voltage.
When using the 200 Volt AC drive, connect the
motor for low voltage. When using the 400 Volt
AC drive, connect motor for high voltage. Refer to
Figure 13.
To change the direction of the motor rotation,
reverse any two leads between the AC drive and
the motor.
Service Tips
a. If the motor makes a high-pitched sound, check
the voltage. The rotor could also be out of
alignment with the stator.
b. If a motor has a reduced torque, check that the
current draw in each leg is the same. If it varies
more than 15%, either the motor winding or the
power to the machine is faulty.
c. If the motor does not receive power, check the
AC drive power.
d. If shorted or open windings are suspected,
check them with an ohmmeter. All three legs
must register the same amount of resistance
(ohms).
Removal and Installation
Removal
a. Turn off power to the machine.
b. Remove the screws attaching the cage wrap and
the back panel to the machine. Remove the cage
wrap and the back panel. Refer to Figure 14.
c. Loosen the four bolts attaching the motor to the
frame to relieve the belt pressure. Remove the
belt. Refer to Figure 15.
d. Remove the motor junction box cover. Refer to
e. Mark and remove the three power wires and the
ground wire.
f. Remove the bolts attaching the motor to the
frame. Remove the motor.
Figure 13
4
5
6
7
8
9
1
2
3
L1
L2
L3
L1
L2
L3
7
8
9
4
5
6
1
2
3
LOW VOLTAGE
HIGH VOLTAGE
P128D
U
V
W
U
V
W
Figure 14
PHM1947S
Cage
Wrap
Back
Panel