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ADJUSTMENTS
PRESSURE REGULATOR:
The pressure regulator is factory set at 4 N W.C. for natural gas and 10 N WC. for propane gas. lb check
the manifold pressure:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Turn thermostat “OFF” (lowest position) and Unitrol knob to “PILOT” setting.
Remove pressure tap plug from burner manifold located directly above the Unitrol in the cabinet.
Install a fitting appropriate to connect a manometer.
Turn Unitrol dial to “ON” position and thermostat “ON.” The burners will ignite. Be certain
sufficient frying compound is covering the tubes
With burners on, read manometer.
If manometer does not read 4 n WC. for natural gas, or 10 R WC. for propane gas, adjust regulator.
Remove regulator adjustment screw cap (see diagram at rear).
With small screwdriver rotate adjustment screw “CLOCKWISE” to increase or “COUNTER-
CLOCKWISE” to decrease pressure. Be sure to adjust with burners “ON.”
Turn thermostat “OFF” and set Unitrol knob to “PILOT” position.
Remove manometer and replace pressure tap plug.
Replace adjustment screw cap.
CHECKING CALIBRATION OF THERMOSTAT:
All thermostat controls are carefully calibrated at the factory. (i.e.: The dial is properly set to
control appliance temperatures accurately.) Only a qualified appliance serviceman should perform
this adjustment.
1. To check appliance temperatures, use a thermocouple-type temperature test instrument or
reliable thermometer. Place the thermocouple of test instrument or thermometer in the center
of the kettle
2. Turn the control dial to the temperature setting requiring the greatest accuracy. Allow enough
time for temperature to stabilize, or until several temperature readings are identical.
3. Recalibrate when setting and actual temperature differ by more than 10°F.
RECALIRRATE CONTROL AS FOLLOWS
(see Fig. 4)
1.
2.
3.
Remove dial from dial shaft “B.” Be
careful dial shaft does not rotate in
either direction which would change the
dial setting.
Hold dial shaft “B” steady and with a
screwdriver, turn calibration screws ‘A”
clockwise to decrease and counter-
clockwise to increase the temperature.
Replace dial. Let the appliance operate
until the temperature has stabilized be-
fore a final check is made to determine
whether or not the calibration has been
corrected.
I
DIAL
, SHAFT
l/4 TURN CHANGES
TEMPERATURE 18”
Fig. 4
DEEP FAT FRYER
SECTION THREE - SERVICE
PAGE 2
Litho in U.S.A.
2-94