NOTE: The following maintenance is required once or
twice a year, but should only be done by a qualified
serviceman who is familiar with LP gas systems and
refrigerators.
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 non-corrosive
bubble solution to all LP gas connections. The ap-
pearance of bubbles indicates a leak and should be
repaired immediately by a QUALIFIED SERVICE-
MAN WHO IS FAMILIAR WITH GAS SYSTEM AND
REFRIGERATORS.
! 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 9.
D.
The LP gas pressure should be checked and the
main regulator re-adjusted 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. 14).
E.
Inspect the flue baffle. It should be reasonably clean
and free of soot. Heavy soot formation indicates
improper 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
refrigerator.
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.
6.
Remove the burner mounting screws and remove the
burner assembly. (See FIG. 14).
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. Re-install and tighten burner jet.
NOTE: The color of the flame shall be clear blue over
the slots of the burner. (See FIG. 15).
! 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.
10. Reinstall burner, being careful that the end of the
burner fits into the slot on the burner bracket. Check
to make sure slots are centered under the flue tube
and the thermocouple is positioned properly (tip of
thermocouple extends over two slots of burner).
11. Be sure to reconnect the wire to high voltage elec-
trode. Check the electrode for proper location and
gap. (See FIG. 16).
12. Turn on manual gas shutoff valve and check all
fittings for leaks.
13. Connect 120 volt power cord to the outlet and recon-
nect or turn on the 12 volt DC power.
14. Check LP gas safety shutoff. See page 6.
TROUBLESHOOTING
The Refrigerator Does Not Cool Properly
A.
Burner jet clogged.
Clean. (See section Maintenance & Service, Item 2.
Periodic Maintenance, Paragraph E. Item 1-14.
B.
Check level of refrigerator.
C.
Venting problem.
Restriction in air flow across cooling unit.
D.
Heavy frost buildup on evaporator fins.
Defrost.
E.
Flue baffle not inserted properly in flue tube.
F.
Improperly set thermostat.
See section Operating Instructions, part Start Up
Instructions.
G. Burner dirty.
Clean. See section Maintenance & Service, Item 2.
Periodic Maintenance, Paragraph E. Item 1-14.
FIG. 16
Electrode
1/8" to 3/16"
(3-5 mm)
Burner tube
FIG. 15
Clear blue color
of flame
13
Summary of Contents for RM 7832
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