13
NOTE:
The following maintenance is required once or
twice a year, but should only be done by a qualified ser-
viceman who is familiar with LP gas systems and refrig-
erators.
B. Check all connections in the LP gas system (at the
back of the refrigerator) for gas leaks. The LP gas
supply must be turned on. Apply a noncorrosive
bubble solution to all LP gas connections. The ap-
pearance of bubbles indicates a leak and should be
repaired immediately by a QUALIFIED SERVICEMAN
WHO IS FAMILIAR WITH GAS SYSTEM AND RE-
FRIGERATORS.
6. Remove the burner mounting screws and remove the
burner assembly. (See FIG. 12).
7. Remove the wire and the flue baffle from the top of
flue tube. Clean the flue from the top using a flue
brush. Blowing compressed air into the flue will not
properly clean soot and scale out of the flue tube.
Replace the flue baffle.
8. Clean burner tube with a brush. Blow out burner with
compressed air.
9. Before removing burner jet, clean burner area of soot
and scale that fell out of flue tube. Remove the burner
jet. Soak the jet in wood alcohol and blow it out with
compressed air. Reinstall and tighten burner jet.
NOTE:
The color of the flame shall be clear blue
over the slots of the burner. (See FIG. 13).
! WARNING
DO NOT use a wire or pin when cleaning the burner
jet as damage can occur to the precision opening.
This can cause damage to the refrigerator or create
a fire hazard.
FIG. 13
Clear blue color
of flame
GAS EQUIPMENT ASSEMBLY
SOLENOID VALVE
INLET FITTING
MANUAL SHUTOFF VALVE
Shown in open position
PRESSURE TEST PORT
BURNER JET
SPARK ELECTRODE
BURNER TUBE .
THERMOCOUPLE
BURNER MOUNTING
SCREWS
FIG. 12
! WARNING
DO NOT use a flame to check for gas leaks.
C. Check the AES control system by connecting/discon-
necting 120 volt AC power, start/stop the engine, etc.
Compare the operation with the operation described
in description of operating modes. Page 10.
D. The LP gas pressure should be checked and the main
regulator readjusted if pressure is incorrect.
The correct operating pressure is 11 inches of water
column. The correct place to take the LP gas pres-
sure is at the test port just ahead of the burner jet.
(See FIG. 12).
E. Inspect the flue baffle. It should be reasonably clean
and free of soot. Heavy soot formation indicates im-
proper functioning of the burner. The flue and burner
both require cleaning in the following manner:
1. Unplug the refrigerator power cord from the 120 volt
AC outlet. (See FIG. 3).
2. Disconnect or shut off the 12 volt power to the refrig-
erator.
3. Turn manual shutoff valve to OFF. (See FIG. 1).
4. Remove cover from the burner housing. (See FIG. 1).
5. Disconnect the wire from the high voltage electrode.
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