Garland GD SERIES GAS COUNTER UNITS - Manuel (Page 9)

Part # 4519762 (12/07) Page 9
Shutdown Instructions
To shut down fryer for a short period, turn automatic gas
valve knob to the “PILOT” position.
For complete shutdown, turn automatic gas valve knob
clockwise to “PILOT” position, depress the knob, turn slightly
clockwise, release, and continue to turn clockwise to “OFF”.
Calibration Instructions
1. Field calibration is seldom necessary and should not
be attempted unless experience with cooking results
definitely proves that the control is not maintaining the
temperature to which the dial is set.
2. Suspend thermometer or thermocouple in the middle
of the fry tank, approximately 2” (51 mm) below the
shortening level.
3. Allow burner to cycle at least four times.
4. When the burner just cycles off after the fourth cycle,
compare reading of the thermometer or thermocouple
with thermostat setting.
5. If the two do not agree, ± 10°F (5°C), loosen the two set
screws on the thermostat knob.
6. Set the pointer at the temperature indicated by the
thermometer.
7. Tighten the set screw firmly.
8. Ensure the back surface of the knob is spaced away from
the dial plate at least the thickness of a dime.
NOTE: Do not turn adjusting shaft more than two turns in
either direction or permanent damage can result. This action
will void the Standard Fenwal thermostat warranty.
Griddles
IMPORTANT: The flue must be installed prior to start-up.
Lighting Instructions And
Pilot Burner Adjustment
Each griddle burner is equipped with a pilot.
For the HI-LO valve operated model, the pilot adjusting valve
pilot burner is located on the manifold to the left of each
griddle valve. Open the pilot valve with a screwdriver and
light the pilot with a match.
ADJUSTMENTS Continued
For the griddle equipped with thermostats the pilot and the
main burner are controlled by the ON-OFF valve. MAKE SURE
THE THERMOSTAT IN ON OFF POSITION. Turn on the main
valve and light the pilot with a match. The pilot adjusting
screw is located at the bottom of the thermostat.
Pilots flames must be 3/4 inch (19mm) long
Burner Operation
The burner will light automatically from the pilot. Turn the
valve to full “ON” position. Once the flame has ignited, adjust
the valve to the desired setting.
Hi-Lo Valve Adjustment
Griddles equipped with Hi-Lo valves require a low flame
setting. To adjust, proceed as follows:
1. Burner must be cold.
2. Be sure pilot flames are lit, and adjusted.
3. Turn dial to “LO” position, then remove dial.
4. With a screwdriver, turn the small adjusting screw inside
the valve stem and adjust to obtain the low cooking
temperature desired, maintaining a stable flame covering
the entire burner (minimum 3/16 inch (5 mm) long
flame).
5. Replace dial and turn to “OFF” position.
Calibration Instructions
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 surface directly above the sensing bulb of
the thermostat. The reading should be between 335°F
(168°C) and 365°F (185°C). If the reading is outside of
these limits, calibrate as follows:
4. Carefully remove the dial, not disturbing the shaft
position.