Garland S18-F series, Installation And Servicing Manual

Page: 8 / 16

Part # P156 Rev 1 (12/03/09) Page 8
MAINTENANCE AND CLEANING
Regular servicing by a competent person is recommended to
ensure the continued safe and efficient performance of the
appliance.
Thermostat Calibration
WARNING: Turn off the electrical mains before commencing
any service work.
It is normal for an electromechanical thermostat to cycle
with a 45° F - 50°F (25°C - 28°C). 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 tank 1” (25mm) below the oil surface.
2. Turn the thermostat dial to 325° F (163° C). In order to
allow the oil temperature to stabilize, the 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 cycle pilot lamp. If the
temperature does not read within 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 and with a small flat
blade screw driver, turn the calibration screw located
inside the shaft clockwise to decrease the temperature
and counter clock wise to increase the temperature.
NOTE: Each 1/4 turn of the screwdriver will create a
change of approximately 35° F (20° C).
6. Replace the thermostat dial and repeat steps 1 through 3
to verify that correct adjustment has been made.
REPLACEMENT OF PARTS
WARNING: Turn off the electrical mains before commencing
any servicing work.
Thermostat
1. Remove the screws securing the front panel to the front
rail and drop the panel.
2. Disconnect the wires from the taps on the thermostat.
3. Remove the dial from the thermostat and the screws
securing the thermostat body to the control panel
4. Remove the wires from the thermostat terminals. Be sure
to note which wire connects to which terminal on the
thermostat.
5. Remove the thermostat sense bulb. Note the path of the
capillary and install the new one in the same manner.
6. Replace the faulty thermostat and reassemble in the
reverse order.
Indicator Lamps
1. Remove the screws securing the front panel to the front
rail and drop the panel.
2. Disconnect the supply wires to the lamp body and
remove the faulty lamp.
3. Reassemble in the reverse order.
Heating Elements
1. Tilt rotating element head up and remove the element
terminal cover.
2. Disconnect the supply wires to the element.
3. Remove the sealing connectors.
4. Reassemble in the reverse order replacing the sealing
connectors.