10
Figure 4-3
Thermostat Bulb Positioning
V SERVICE
REMOVAL AND
REPLACEMENT OF
GREASE FILTER
The grease filter cleans grease from the air entering
the blower and burner assemblies, providing optimum
reliability and performance of the fryer. It consists of an
aluminum mesh which can be easily cleaned in a
dishwasher.
Removal:
1. Loosen filter handle thumbscrew (located on front
leg channel), drop handle down and slide filter
forward.
Replacement:
1. Center the filter under the filter handle thumbscrew
and slide it under the blower/spark module
assembly until goes in all of the way. Pull handle up
into place and tighten thumbscrew.
WARNING
ALL HI-LIMIT CONTROLS ARE PRESET AT THE
FACTORY FOR A SPECIFIC TEMPERATURE. DO
NOT ATTEMPT TO CHANGE THE SETTING OF THE
HI-LIMIT. IF THE HI-LIMIT FAILS TO SHUT OFF
BETWEEN 425°F AND 450°F DURING TESTING, IT
SHOULD BE REPLACED.
FLAME
ADJUSTMENT
A. Gas Pressure
1. At gas valve, remove adjustment port cover, (brass
screw located above the black electrical terminal
box), rotate adjustment screw with screwdriver and
replace port cover.
2. To check the gas pressure (3" WC for natural gas
or 10" WC for Propane, low input units 2.4"), use
an allen wrench to remove the gas pressure test
port, located in the center of the 1/2" pipe T-fitting
which feed the 3/8" aluminum burner gas supply
tubes.
B. Air Flow
1. The air shutter is located in the front of the blower
cabinet where the two air hoses enter the cabinet.
It consists of two plates, each located directly
above an air hose and held in place by a hex head
screw. (See item #9, page 18)
2. To adjust the air mixture, loosen the shutter screw
for one burner only and move the shutter up or
down until the proper gas/air mixture is reached for
that burner. Tighten the shutter screw and repeat
the process for the other burner.
3. To determine the proper gas/air mixture, look into
the viewing window for each burner, located just to
the left of each burner air hose where the hose is
connected to the burner assembly.
l
bright red/orange with proper mixture – orange
“glow” around burner tube
l
too little air – orange “haze” around burner
tube (showing incomplete combustion)
l
too much air – blue at front of burner, or totally
blue
4. The burner air/gas mixture status chart shows the
burner flame characteristics over the complete
adjustment range of the air shutter. It can be used
to more accurately determine the burner air/gas
mixture to see if any adjustments are needed.
Each burner should be checked independently of
the other.
AIR SHUTTER POSITION
BURNER FLAME APPEARANCE
Fully closed
Dull red with aqua colored tips
|
Brighter red
|
Bright red-orange with orange haze
Desired position
Bright red-orange with orange glow
Desired position
Bright red-orange with faint blue tips
|
Bright red
|
Duller red with faint blue tips or blue
at front of burner
Fully open
Dull red with blue haze or totally
blue
