Drive Motor - Stoelting F431 Service Manual

A. CONTACTOR TESTS
The following tests will show if a contactor is working
properly.
1. Open header panel and visually check the
IntelliTec control board.
2. Check for a signal going to contactor. When the
spigot is opened or the Push To Freeze button is
pressed, the DRV LED on the control board will
light up. After three seconds, the CMP LED will
light up (Refer to Figure 6-4). If the LEDs do not
light up, refer to Section 7 Troubleshooting.
In addition to the LEDs lighting, there will be an
audible click from the contactors and the motor and
compressor will start.
DRV LED
Figure 6-4 IntelliTec LEDs
3. Check to ensure contactor is receiving signal.
Read voltage across the coils of the contactor
during a freezing cycle. Voltage should be about
115V. If there is no voltage reading, refer to Section
7 Troubleshooting.
6.3

DRIVE MOTOR

The drive motors are designed specifi cally for the F431
machines. The drive motors are used to rotate the auger
assemblies. An internal, normally closed, centrifugal
switch starts the drive motor. The motors have an internal
thermal overload.
NOTE
CMP LED
A. DRIVE MOTOR REMOVAL
1. Disconnect machine from electrical supply before
removing any panels for servicing.
2. Remove the back panel and the side panel (of
the side being removed).
3. Remove the electrical cover plate from the back
of the motor.
4. Identify (mark) wires and remove them from the
motor.
5. Remove protective shield from side of machine.
(Refer to Figure 6-5)
Figure 6-5 Motor Removal
6. Loosen the belt tension adjustment nut and remove
the belt. (Refer to Figure 6-5)
7. Remove the motor mounting bolts.
8. Loosen the two allen head screws from the pulley.
9. Remove the pulley and key from the motor shaft.
B. DRIVE MOTOR INSTALLATION
1. Place the drive motor in position and install the
four mounting bolts.
2. Place the pulley and key on the motor shaft.
Do not tighten the pulley screws until after the belt
tension has been properly adjusted.
3. Install the belt and tighten the tension bolt.
4. Test for proper belt tension by pressing fi rmly on
the belt. When the tension is properly adjusted, the
belt should depress approximately 3/8" (roughly
the width of the belt).
46
Protective
Shield
Tension
Adjustment
Nut
NOTE