Thermostat Calibration; Maintenance And Cleaning; Griddle - Garland S680 SERIES Installation And Service Manual

MAINTENANCE AND CLEANING

Regular servicing by a competent person is recommended to
ensure safe and efficient performance of the appliance .
WARNING: Turn off the electrical mains before
commencing any service work .

Thermostat Calibration

Oven
It is normal for an electromechanical thermostat to cycle with
a 45°F - 50° F (25°C - 28°C) range when checking calibration
allow the thermostat to cycle a minimum of two times .
1 . Place the thermocouple of the test instrument in the
center of the oven .
2 . Turn the oven temperature control dial to 400° F (205°
C) . In order to allow the oven temperature to stabilize,
the oven control must be allowed to cycle twice before
taking a test reading .
3 . Check the temperature reading just when the control
cycles "OFF" as indicated by the cycling pilot lamp . If the
temperature does not read with in 15° F (8°C) of the dial
setting, recalibrate as follows:
4 . Carefully remove the thermostat dial, not disturbing the
dial setting .
5 . Hold the thermostat shaft steady with a small flat blade
screw driver . Turn the calibration screw located inside the
shaft clockwise to decrease the temperature and counter
clockwise to increase the temperature . NOTE: each ¼ turn
of the screw will create a change of approximately 35° F
(20°C) .
6 . Replace the thermostat dial and repeat steps 1 though 3
to verify that the correct adjustment has been made .
Part # P152 Rev 1 (01/13/10)
Dial Shaft
Calibration Screw Head
Calibration
Screw Head
1/4" Turn

Griddle

1 . Use a test instrument with a special disc type
thermocouple or a reliable surface type pyrometer . NOTE:
a drop of oil on the face of the disc will provide better
contact with the plate .
2 . Set all griddle thermostats to 350°F (177°C) . In order
to allow the griddle temperature to stabilize, the
thermostats must be allowed to cycle twice before taking
a test reading .
3 . Check the griddle temperature when the thermostat just
cycles "OFF" by placing the thermocouple firmly on the
griddle directly about the sensing bulb of the thermostat .
The reading should be between 335° F (168°C) and 365°
F and (185°C) . If the reading is outside of these limits,
calibrate as follows:
4 . Carefully remove the dial, not disturbing the shaft
position .
5 . Hold the shaft steady and with a small flat screw
driver turn the calibration screw located inside the
shaft clockwise to decrease temperature and counter
clockwise to increase temperature . NOTE: Each ¼ turn
of the screw will create a change of approximately 35° F
(20°C) .
6 . Replace the thermostat dial and repeat steps 1 through 3
verify that a correct adjustment has been made .
Increase
Decrease
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