Service Manual for
RCO Speed Oven
14
3. Remove the fuse.
4. Perform a continuity test on the fuse.
5. Replace the faulty fuse.
6. Restore the unit to its power source.
7. Ensure the unit is operating correctly.
8. Remove power from unit and reattach top panel.
9. Restore power to the unit.
Note:
Check the Primary and Secondary interlock
switches for proper operations. Any damaged or non-
functional switches must be replaced.
CONTROL BOX ASSEMBLY
Before performing any service that
involves electrical connection or disconnection
and/or exposure to electrical components, always
follow the Electrical LOCKOUT/TAGOUT Procedure.
Disconnect all circuits. Failure to comply can
cause property damage, injury or death.
The Control Board is mounted on the front of the unit.
Control Board
Speed Oven Control Board
System Testing
See the section on General Systems Testing in the
System Testing Section of the Manual for full details
on testing Control Board.
Control Box Replacement
1. Remove the unit from its power source and follow
the proper Lockout/Tagout procedures.
2. Tag and disconnect wires to the Control Board.
3. Remove the Control Box Assembly mounting
screws.
Mounting
Screws
Control Box Assembly Mounting Screws
4. Remove the faulty Control Box Assembly.
5. Install the replacement Control Box Assembly.
6. Referring to the tags, reconnect all of the Control
Board wires.
7. Temporarily restore power to the unit and verify
the Control Board is operating correctly.
8. Remove the unit from its power source and reattach
the top panel.
9. Restore the unit to its power source.
10. Perform a Microwave Leakage Test (as described
on page 32) to validate proper functionality.
Control Box Adjustment
1. Allow the oven to cool below 150 °F (66 °C). Unplug
the oven and remove the top and side panels.
2. Heat the oven to 500 °F (260 °C)
3. Loosen the 2 screws holding the controller box in
place.
4. Pull the door so that the prong above the primary
switch contacts the roller.
Oven
Door
Primary
Switch
Prong
Roller
Prong Touching Roller