Operating instructions

OVEN
20
OVEN SECTION - SERVICING INSTRUCTIONS (continued)
CAUTION:
HOT SURFACE
Exposed surfaces can be hot to
the touch and may cause burns.
CAUTION:
SHOCK HAZARD
Multiple live electrical circuits are
present inside the control section
of the cabinet.
Disconnect power before
removing the side panel.
TEST BLOWER FAN MOTOR
A. IF motor does not run with power switch in ON or FAN position.
Attempt to start motor by spinning blower wheel clockwise.
IF motor starts, replace capacitor (p/n 69823).
IF motor does not start, check motor, switch and wiring.
IF fan is hard to turn, check motor mounting to be sure fan is not
rubbing, otherwise replace motor (p/n 63932).
B. IF motor runs in power switch FAN position, but not in ON position.
Check power switch, proximity switch and wiring.
REMINDER: in ON position, door must be closed.
C. IF motor only runs with HIGH or LOW position of fan switch
Check fan switch and wiring, otherwise replace motor (p/n 63932).
A new style capacitor and mtg. bracket (p/n 504187) kit is available to
upgrade old style units (where the capacitor is attached to the motor).
The new configuration mounts the capacitor remotely on the oven
frame.
REPLACE BLOWER FAN MOTOR
1. Access blower fan by removing racks, rack support and fan baffle.
Use care around blower wheel. FAN BLADES ARE SHARP!
2. Blower fan mounts to motor shaft with set screws. Remove
blower fan.
3. Remove four nuts holding mounting bracket to cabinet. Remove
four nuts holding motor to mounting plate.
NOTE: Use care that electrical components and wiring on motor
mounting plate are not damaged.
4. Note wiring connections on motor, then disconnect wires. Remove
7/8” grommet from motor wiring box. Discard old motor.
5. Install motor on mounting bracket so that the motor wiring box is
toward the top. Be sure to attach the bonding wire between motor
and motor mount as shown at right.
6. Reinstall mounting bracket to cabinet.
7. Install 7/8” grommet in motor wiring box and connect wires.
8. Reinstall blower fan. Rotate fan several times to make sure fan or
motor shaft does
not rub on cabinet.
9. Reinstall fan baffle,
rack mounts and
racks.
10. Reconnect wiring.
Reconnect unit to
electric power and
test for proper
operation.
BAFFLE & RACK SUPPORT
MOTOR MOUNT DETAIL
FAN WHEEL
MOTOR MOUNT
FAN
MOTOR
MOTOR
START
CAPACITOR
AND MOUNT
BRACKET
MOTOR
MOUNTING
PLATE
7/8"
GROMMET
SV509 SvcManual WVOC-G136