Dometic RM1350M Installation & Operating Instructions Manual page 24

maintenance & service
TO CHECk THE CONNECTIONS FOR LEAkS, FOLLOW
THESE STEPS:
1. Verify that the LP gas supply is turned on.
2. Apply a commercial non-corrosive bubble solution
to all LP gas connections.
3. The appearance of bubbles indicates a leak. Shut off
the main gas supply and service immediately.
checking the control system
Check the control system by connecting/disconnecting the
120V AC power, starting/stopping the engine, etc.
checking the lp gas pressure
The LP gas pressure should be checked and the main regulator
readjusted if the pressure is incorrect. The correct operating
pressure is 11 inches of water column. Measure the LP gas
pressure at the test port, just ahead of the burner jet.
gaS equipment aSSembly
BURNER MOUNTING
SCREWS
BURNER JET
BURNER TUBE .
SPARK ELECTRODE
cleaningthe flue baffle and burner
Inspect the flue baffle. It should be reasonably clean and free of
soot. Heavy soot formation indicates improper functioning of
the burner.
TO CLEAN THE FLUE AND BURNER, FOLLOW THESE
STEPS:
1. Turn off the refrigerator.
2. Unplug the power cord from the 120V AC outlet.
Disconnect the wires or shut off the 12V DC power
supply to the refrigerator.
3. Turn off the manual shut off valve.
4. Remove cover from burner housing. Remove the
burner mounting screws and then, the burner as-
sembly.
5. Remove the wire and flue baffle from the top of the
flue tube.
6. Using a flue brush, clean the flue from the top.
Blowing compressed air into the flue will not prop-
erly clean soot and scale out of the flue tube.
SOLENOID VALVE
INLET FITTING
MANUAL SHUTOFF VALVE
Shown in open position
PRESSURE TEST PORT
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7. Put back the flue baffle.
8. Clean the burner tube with a brush. Blow out the
burner with compressed air.
9. Remove burner jet, but first, clean burner area of
soot and scale that fell out of flue tube.
10. Remove the burner jet.
11. Soak the jet in wood alcohol and blow it out with
compressed air.
6
wARNINg
!
FIRe HAZARD. Do not use a wire or pin
when cleaning the burner jet as damage can
occur to the precision opening. Failure to
heed this warning could cause fire resulting
in personal injury.
12. Reinstall and tighten the burner jet.
13. Reinstall the burner. Ensure the end of the burner
fits into the slot on the burner bracket. Verify that the
slots are centered under the flue tube).
14. Check the electrode for proper location and gap.
1/8 " to 3/16 "
(3-5 mm)
15. Turn on the manual gas shut off valve.
16. Examine all fittings for leaks. (Use a commercial
non-corrosive bubble solution.)
17. Connect the 120V power cord. Reconnect/turn on
the 12V DC power.
18. Check the LP gas safety shut off.
Be sure to check the burner
flame for proper appearance.
The flame should be light blue.
If it has a yellow tip, it means
that it is burning incorrectly.
Electrode
Burner tube