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Electromechanical Relay
There are two electromechanical relays in the unit. Perform the
"Testing/Troubleshooting" on both, and replace as necessary.
Testing/Troubleshooting
DANGER! Completely shut down and unplug oven
before proceeding. Refer to "Shutdown" procedure.
• Check for continuity across the COM and NC terminals. If
the continuity is incorrect, replace the relay.
• Check for continuity across the COM and NO terminals. If
the continuity is incorrect, replace the relay.
Replacement Procedure
1. Completely shut down and unplug the oven. Refer to the
"Shutdown" procedure in the OPERATION section.
2. Remove the left side panel. Refer to the "Removing the
Side Panels" procedure in this section.
3. Disconnect all lead wires from the electromechanical relay.
4. Remove the electromechanical relay from the DIN rail clip.
a. For horizontally mounted relays, pull out on the
large, orange slider on the DIN rail clip to release the
eletromechanical relay from the clip.
b. For vertically mounted relays, pull down on the
large, orange slider on the DIN rail clip to release the
eletromechanical relay from the clip.
5. Install the new electromechanical relay by reversing the
steps above.
Electromechanical Relay
DIN Rail Clip
Orange
Slider
OVMISAM-0522
SERVICE PROCEDURES
Thermal Cutoff Switch
Testing/Troubleshooting
• If the temperature of the oven is below 300°F and the
thermal cutoff switch will not reset when the button is
pressed, replace the thermal cutoff switch.
DANGER! Completely shut down and unplug oven
before proceeding. Refer to "Shutdown" procedure.
• Verify that all legs of power are passing through the thermal
cutoff switch by checking for continuity from line side to
load side on each leg. If there is no continuity, replace the
thermal cutoff switch.
Replacement Procedure
1. Completely shut down and unplug the oven. Refer to the
"Shutdown" procedure in the OPERATION section.
2. Remove the right side panel. Refer to the "Removing the
Side Panels" procedure in this section.
3. Disconnect the lead wires from the thermal cutoff switch.
4. Cut away the insulation from around the high limit probe
that is mounted to the side of the element housing.
5. Remove two (2) 1/4" hex screws that secure the high-limit
probe to the element housing. Remove the hold down
bracket and probe.
6. Remove the two (2) Philips-head screws that secure the
thermal cutoff switch to the top support rail on the oven
frame. Remove the thermal cutoff switch.
7. Install the new thermal cutoff switch and high limit probe by
reversing the steps above.
29
Phillips
Screw
Thermal
Cutoff
Switch
Hex Screw
High Limit
Probe
Hold Down Bracket
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