Frymaster FilterQuick FQG30, Руководство по обслуживанию

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1-4
FREQUENTLY USED TEST POINTS FOR INTERFACE BOARD 106-6706
Meter
Setting
12VAC Power to Controller 50VAC Scale 1 and 3 on J3 or J2 12-18
24VAC Power to Right Module 50VAC Scale 8 on J3 and GROUND 22-28
24VAC Power to Left Module (if present) 50VAC Scale 8 on J1 and GROUND 22-28
120 VAC Power 250VAC Scale 11 on J3 and GROUND 110-125
120 VAC Power to Blowers 250VAC Scale 12 on J3 and GROUND 110-125
24VAC Power to Full- or Right-vat High-Limit 50VAC Scale 9 on J3 and GROUND 22-28
24VAC Power to Left High-Limit (if present) 50VAC Scale 9 on J1 and GROUND 22-28
Probe Resistance (Full- or Right-vat) * R x 1000 OHMS 2 and 6 on J3 or 13 and 14 on J2 **
Probe Resistance (Left - if present) * R x 1000 OHMS 2 and 6 on J1 or 14 and 15 on J2 **
Probe Isolation R x 1000 OHMS 6 on J1 or J3 and GROUND ***
High-Limit Continuity (Full- or Right-vat) R x 1 OHM 9 on J3 and Wire 13C on Gas Valve 0
High-Limit Continuity (Left - if present) R x 1 OHM 9 on J1 and Wire 12C on Gas Valve 0
** See Probe Resistance Chart at end of chapter.
*** 5 mega-Ohms or greater.
Test Pins Results
* * Disconnect 20-pin harness from controller before testing probe circuit.
1.4 Thermostats
FilterQuick™ FQG30 Series gas fryers have
temperature probes
located on the front centerline of each frypot
(dual-vat frypots have two probes, one in each vat). In this type of thermostat, the probe resistance varies
directly with the temperature. That is, as the temperature rises, so does resistance, at a rate of approximately 2
ohms for every 1º F. Circuitry in the controller monitors the probe resistance and controls burner firing when
the resistance exceeds or falls below programmed temperatures (setpoints).
FilterQuick™ FQG30 Series gas fryers are also equipped with a
high-limit thermostat.
In the event that the
fryer fails to properly control the oil temperature, the high-limit thermostat prevents the fryer from overheating
to the flash point. The high-limit thermostat acts as a normally closed power switch that opens when exposed to
temperatures above 425ºF to 450ºF (218ºC to 232ºC). The different types of thermostats have different part
numbers for CE and Non-CE models, and are not interchangeable.
1.5 Accessing Fryers for Servicing
DANGER
Moving a fryer filled with oil may cause spilling or splattering of the hot liquid. Follow
the draining instructions on page 1-13 thru 1-15 of the FilterQuick™ Controller Manual
(P/N 819-7050) before attempting to relocate a fryer for servicing.
1. Shut off the gas supply to the unit. Unplug the power cords. Disconnect the unit from the gas supply.
2. Remove any attached restraining devices and relocate the fryer for service accessibility.
3. After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices, and plug in
the electrical cords.
1.6 Cleaning the Gas Valve Vent Tube
1. Set the fryer power switch and the gas valve to the OFF position.
2. Carefully unscrew the vent tube from the gas valve.
NOTE:
The vent tube may be straightened for ease of
removal.
3. Pass a piece of ordinary binding wire (.052 inch diameter) through the tube to remove any obstruction.
4. Remove the wire and blow through the tube to ensure it is clear.
5. Reinstall the tube and bend it so that the opening is pointing downward.