Service manual

SERVICE MANUAL WG-xxG Series Gas Griddles SERVICE PAGE 4-1
CONTROL CALIBRATION REQUIREMENT WG-2424G to WG-3048G SERIES GRIDDLES
Calibration should not be attempted if the dial
can be adjusted to compensate for the
temperature variation, or, if the actual griddle
surface temperature varies from the dial
setting by more than 125° F.
Variations of less than ± 25° F. should be
compensated for by adjusting the control dial
up or down to the desired surface
temperature.
IMPORTANT CALIBRATION CAUTION
WARNING: CALIBRATION HAS A UNITED RANGE,
PERMANENT DAMAGE MAY OCCUR IF THE SCREW IS
ROTATED MORE THAN ONE FULL TURN.
A TURN OF 1/8 OF REVOLUTION ON THE SCREW WILL
CAUSE A 10 - 15' F. OF CHANGE.
THERMOSTAT CALIBRATION TOOL
Calibration of the control thermostat may be
accomplished by adjusting the small screw in
center of the metal control shaft.
The small flat blade screwdriver required to fit
the screw must be a maximum of no more
than 3/32 of an inch wide.
PLACEMENT OF TEST PYROMETER OR THERMOMETER
Place the sensor probe of a (known accurate)
pyrometer in the area directly above the
sensing bulb of the thermostat to be
calibrated.
This will place the probe on the cooking
surface and centered front to back and side
to side in the heated zone of the thermostat
being calibrated.
INITIAL HEATING CYCLE
Be sure to allow several on/off cycles before
adjusting to avoid overshoot on the initial
heating cycle.
Failure to observe this precaution will result in an
inaccurate adjustment while calibrating the
thermostat.
CALIBRATION
To increase the temperature, turn the
adjusting screw counter clockwise, to
decrease the temperature, turn the screw
clockwise. Apply a small amount of sealant
(build a bridge of sealant) to the head of the
calibration screw and inside of the control
shaft after completing calibration.
Failure to lock the adjusting screw from
changing with sealant can result in a drifting
problem wit the thermostat.
A NOTE HERE; if more than 1 full turn is
required, replace the thermostat Use only
genuine O.E.M. parts.
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