R- 308JK
R - 308JS
R-308JW
R-309JW
25
Side View
Rear View
INSTALLATION
1. Install the fan blade to the fan motor shaft according to the
following procedure.
2. Hold the center of the bracket which supports the shaft of
the fan motor on the flat table.
3. Apply the screw lock tight into the hole (for shaft) of the fan
blade.
4. Install the fan blade to the shaft of fan motor by pushing the
fan blade with a small, light weight, ball peen hammer or
rubber mallet.
5. Install the fan motor to the oven cavity back plate with the
two (2) screws.
CAUTION:
*
Do not hit the fan blade strongly when installed because
the bracket may be disfigured.
*
Make sure that the fan blade rotates smooth after
installation.
*
Make sure that the axis of the shaft is not slanted.
6. Connect the wire leads to the fan motor, referring to the
pictorial diagram.
1. Disconnect the power supply cord and remove outer case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Disconnect wire leads from the switches.
5. Remove two (2) screws holding latch hook to oven flange.
6. Remove latch hook assembly from oven flange.
7. Push outward on the two (2) retaining tabs holding switch
in place.
8. Switch is now free.
At this time switch lever will be free, do not lose it.
DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH REMOVAL
Reinstallation
1. Reinstall each switch in its place. The secondary interlock/
monitor switches are in the lower position and the door
sensing switch is in the upper position.
2. Reconnect wire leads to each switch.
Refer to pictorial diagram.
3. Secure latch hook (with two (2) mounting screws) to oven
flange.
4. Make sure that the monitor switch is operating properly and
check continuity of the monitor circuit. Refer to chapter
"Test Procedure" and Adjustment procedure.
Gap
Rotor
Bracket
Stator
Groove joint pliers
Coil
Shaft
Axis
Stator
Rotor
These are the positions
that should be pinched
with pliers.
Shaft
Table
Center of
bracket
1. Disconnect the power supply cord, and then remove outer
case.
2. Open the door and block it open.
3. Discharge high voltage capacitor.
If the door sensing switch, secondary interlock switch and
monitor switch do not operate properly due to a misadjustment,
the following adjustment should be made.
4. Loosen the two (2) screws holding latch hook to the oven
cavity front flange.
5. With door closed, adjust latch hook by moving it back and
forth, and up and down. In and out play of the door allowed
by the upper and lower position of the latch hook should be
less than 0.5mm. The vertical position of the latch hook
should be adjusted so that the door sensing switch and
secondary interlock switch are activated with the door
closed. The horizontal position of the latch hook should be
adjusted so that the plunger of the monitor switch is
pressed with the door closed.
6. Secure the screws with washers firmly.
7. Check the operation of all switches. If each switch has not
activated with the door closed, loosen screw and adjust the
latch hook position.
DOOR SENSING SWITCH/SECONDARY INTERLOCK SWITCH AND MONITOR SWITCH ADJUSTMENT
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when in the
latched position. First check upper position of latch hook,
pushing and pulling upper portion of door toward the oven
face. Then check lower portion of the latch hook, pushing
and pulling lower portion of the door toward the oven face.
Both results (play in the door) should be less than 0.5mm.
Latch
Heads
Door
Switch Lever
Latch Hook
Door Sensing
Switch
Monitor Switch
Secondary
Interlock Switch
Figure C-3. Latch Switch Adjustments
