Component Replacement And Adjustment Procedure; Warning For Wiring - Wolf SUB-ZERO MC24 Service Manual

MC24

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE

CAUTION: DISCONNECT OVEN FROM POWER SUPPLY BEFORE REMOVING OUTER CASE.
DISCHARGE HIGH VOLTAGE CAPACITOR BEFORE TOUCHING ANY OVEN COMPONENTS OR WIRING
AFTER REMOVING OUTER CASE.
To prevent an electric shock, take the following manners.
1. Before wiring,
1) Disconnect the power supply.
2) Open the door and wedge the door open.
3) Discharge the high voltage capacitor and wait for 60
seconds.
2. Don't let the wire leads touch to the followiong parts;
1) High voltage parts:
Magnetron, High voltage transformer, High voltage
capacitor and High voltage rectifier assembly.
2) Hot parts:
Convection heater, Oven lamp, Magnetron, High
voltage transformer and Oven cavity.
To remove the components, procedure as follows.
1. Disconnect oven from power supply.
2. Remove screws from rear and along the side edge of
case.
3. Slide the entire case back out about 1 inch (3 cm) to free
it from retaining clips on the cavity face plate.
4. Lift entire case from the unit.
1. Disconnect oven from power supply and remove outer
case.
2. Discharge high voltage capacitor.
3. Disconnect filament leads of transformer from the
magnetron and capacitor.
4. Disconnect high voltage lead of capacitor from the
transformer.
5. Disconnect wire leads from the transformer.
6. Remove two (2) screws holding the transformer to the
base cabinet.
Re-install
1. Rest the transformer on the base cabinet with its primary
terminals toward rear cabinet.
2. Insert the two edges of the transformer into two metal
tabs of the base cabinet.
1. Disconnect oven from power supply and remove outer
case.
2. Discharge the high voltage capacitor. Disconnect filament
lead of transformer from magnetron. Disconnect high
voltage wire lead from magnetron.
3. Carefully remove four (4) mounting screws hold the
magnetron to waveguide, when removing the screws
holding the magnetron to prevent it from falling.
OUTER CASE REMOVAL

WARNING FOR WIRING

3. Do not catch the wire leads in the outer case cabinet.
4. Insert the positive lock connector certainly until its pin
5. To prevent an error function, connect the wire leads
CAUTION: DISCONNECT OVEN FROM POWER SUPPLY
POWER TRANSFORMER REMOVAL
3. Make sure the transformer is mounted correctly to the
4. After re-installing the transformer, secure the transformer
5. Re-connect the wire leads (primary and high voltage)
6. Re-install the outer case and check that the oven is
NOTE HOT (ORANGE) WIRE MUST BE CONNECTED
MAGNETRON REMOVAL
4. Remove the magnetron from the unit with care so the
CAUTION: WHEN REPLACING THE MAGNETRON, BE
26
3) Sharp edge:
Bottom plate, Oven cavity, Weveguide flange, Chassis
support and other metallic plate.
4) Movable parts (to prevent a fault)
Fan blade, Fan motor, Switch, Switch lever, Open
button.
is locked. And make sure that the wire leads should not
come off even if the wire leads is pulled.
correctly, referring to the Pictorial Diagram.
BEFORE REMOVING OUTER CASE.
corners underneath those tabs.
with two screws to the base cabinet, one is with outer
tooth washer and the other is without outer-tooth washer.
and high voltage lead to the transformer and filament
leads of transformer to the magnetron and capacitor,
referring to the "Pictorial Diagram".
operating properly.
TO THE POWER TRANSFORMER TERMINAL
NEAREST TO THE TRANSFORMER MOUNTING
SCREW.
magnetron tube should not hit by any metal object around
the tube.
SURE THE R.F. GASKET IS IN PLACE AND
THE MAGNETRON MOUNTING SCREWS
ARE TIGHTENED SECURELY.