Service Manual for Electric Convection Oven
26
5. Tighten the setscrew in the cam. Test the door to
make certain the switch will make contact with the
doors closed.
6. Replace the Oven Trim Piece.
Set
Screw
Cam Door
Switch
Door
OVEN DOOR SWITCH CHECK
WARNING: DISCONNECT OVEN FROM POWER
SOURCE BEFORE PERFORMING
ANY SERVICE.
1. Open the oven doors fully.
2. Remove the Lower Trim Piece by loosening the
four screws located inside the door opening.
3. Disconnect wire from the door switch and connect
an ohmmeter across door contacts.
4. Check that with oven door open there is no
continuity.
5. Close oven door until a click is heard and check
switch contacts for continuity. Ohmmeter should
indicate 0 Ohms.
THERMOSTAT CALIBRATION
NOTE: Thermostat calibration is applicable only for
the electro-mechanical controller V. It is not
applicable to ovens with solid-state controls.
Check Calibration
1. Turn the oven on by turning the POWER Switch
to the COOK position.
2. Open the oven doors and place a pyrometer in the
center of the middle oven rack. A reliable mercury-
type thermometer can be substituted if a pyrometer
is not available.
3. Turn the thermostat dial to 350°F (177°C). Allow
the oven to preheat 1/2 hour. When the indicator
light goes out, the thermostat has been satised.
Check the pyrometer or thermometer to determine
the internal oven temperature. If the reading on
the pyrometer (or thermometer) is less than 15°F
different from the setting of the Thermostat, no
adjustment is needed. If this reading is more than
15°F, proceed with calibration procedure.
To Calibrate the Thermostat
1. Remove the Thermostat knob by loosening the
setscrew and pull the knob forward. Take care not
to turn the Thermostat stem, which will change
the setting.
2. With a very small screwdriver, turn the screw
“A” located in the bottom of the hollow of the
stem clockwise to lower the temperature or
counterclockwise to raise the temperature. DO
NOT allow the stem of the Thermostat to turn as
you turn the screw.
CAUTION: Maximum turn of screw “A” is
1-1/2 turns - clockwise or counter-
clockwise.
"A"
Stem
1/4
turn
Decrease Increase
3. Open the oven door and turn the POWER Switch
to the COOL DOWN position. This will allow the
oven fan to come on without the burners and cool
off the oven. Allow the oven to cool to about 250°F
(120°C).
4. Return the POWER Switch to the COOK position
and repeat the previous steps until the oven
Thermostat and the pyrometer (thermometer)
reading agrees.
5. Replace the knob and tighten the setscrews.This
Thermostat is a direct-acting (opens on temperature
rise) device.
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