11
Service Manual for
RCO Speed Oven
8. Reverse this procedure to install a new Tangential
Blower assembly.
9. Restore the unit to service and check for proper
operation.
10. Reattach all panels and covers.
RIGHT SIDE COOLING FAN
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.
Right Side
Cooling Fan
Location of Right Side Cooling Fan
Testing
The Right Side Cooling Fan operates constantly when
the oven is connected to its power source. It provides
cooling for the electrical compartment. If not operating,
the line fuse should be checked. Inspect all wiring
between the fuse holder and the fan. Test the motor
winding leads for a short, open, or grounded condition.
Right Side Cooling Fan Replacement
1. Remove the unit from its power source and follow
the proper Lockout/Tagout procedures.
2. Remove the Top Panel.
3. Tag and disconnect the Cooling Fan wires.
4. Remove the screws and nuts that secure the
Cooling Fan to the right side panel. Retain for
use later.
5. Remove the Cooling Fan.
6. Reverse procedure to install the replacement fan.
7. Restore the unit to service and check for proper
operation.
8. Reattached all panels and covers.
SOLID STATE RELAYS
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.
Solid State
Relays
Location of Solid State Relays
The Solid State Relays are located on the Electrical
Mounting Panel in the top front of the unit. There are
two Solid State Relays. The left side SSR controls the
power supply to the High Voltage Transformers and the
right side SSR controls the Heat Elements.
Operational Testing
The Solid State Relays are equipped with an LED that
illuminates when input voltage is provided to the relay.
Input voltage will only occur if the oven is turned ON
and the door is closed. If the LED does not illuminate,
test the inputs to the relay using a volt meter. 12 VDC
should be present when switched on by the control. If
voltage is not present check the door switches.
Solid State Relay Replacement