MONTAGUE Legend RD18, Инструкция по эксплуатации

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38
SERVICE
Flames “rolling” out of the fryer
are usually an indication of negative pressure in the kitchen.
Air is being sucked out of the fryer enclosure and the flames are literally following the air. If
negative pressure is not the cause, check for high burner manifold gas pressure in accor-
dance with the procedures in Maintenance Section. An obstructed flue, which prevents the
fryer from properly exhausting, may also be the cause.
An excessively noisy burner , especially with flames visible above the flue opening , may
indicate that the burner gas pressure is too high, or it may simply be that the gas valve vent
tube is blocked. If the gas pressure is correct and the vent tube in unobstructed, the gas valve
regulator is probably defective.
Occasionally a burner may apparently be operating correctly, but nevertheless the fryer has a
slow recovery rate (the length of time required for the fryer to increase the oil temperature
from 275ºF to 325ºF (135ºC to 163ºC). The primary causes of this are low burner manifold
pressure and/or misaligned or missing deflector targets. If both of these causes are ruled out,
the probable cause is a gas valve regulator that is out of adjustment. Refer to the
Check
Burner Manifold Pressure procedure in the semi-annual checks and services sectio.
Improper Temperature Control
Temperature control is a function of several interrelated components, each of which must op-
erate correctly. The principle component is the thermostat.
For problem isolation techniques, refer to the troubleshooting guides
TROUBLESHOOTING THE
THERMOSTAT.
Failure to Control at Setpoint
The problem will be with the thermostat itself. Possible causes are that the thermostat is out of
calibration, the knob or flexible shaft is loose on the thermostat shaft, a thermostat wire is
disconnected or broken, or the thermostat is defective. Refer instructions on calibrating the
thermostat.