Periodic maintenance Checking the control system

maintenance & service

Periodic maintenance

Checking the control system

Check the control system by connecting/disconnecting the 120V AC power, starting/stopping the engine, etc.

Checking the connections

1.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.

2.Apply a non-corrosive bubble solution to all LP gas connections. The appearance of bubbles indicates a leak and should be repaired immediately!

WARNING

EXPLOSION HAZARD. Never use an open flame to check for gas leaks. Failure to heed this warning could cause an explosion resulting in death or severe personal injury.

Checking the LP gas pressure

The LP gas pressure should be checked and the main regulator readjusted if pressure is incorrect. The correct operating pres- sure is 11 inches of water column. Measure the LP gas pressure at the test port, just ahead of the burner jet.

Gas equipment assembly

SOLENOID VALVE

BURNER MOUNTING

SCREWS

INLET FITTING

	BURNER JET	MANUAL SHUT OFF VALVE
	BURNER TUBE .	(Shown in open position)
	BURNER TUBE .	PRESSURE TEST PORT
	SPARK ELECTRODE	PRESSURE TEST PORT

Cleaning the 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.

. 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. Blow- ing compressed air into the flue will not properly clean soot and scale out of the flue tube.

.Put back the flue baffle.

8.Clean the burner tube with a brush. Blow out the burner with compressed air.

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 warn- ing could cause fire resulting in personal injury.

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.

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 and the thermo- couple is positioned properly (tip of thermocouple extends over two slots of burner).

4HEHFLAMEFSHOULD BE CLEAREBLUE OVER THE SLOTSOOF THE BURNER

14. Check the electrode for proper location and gap.

Electrode

1/8” to 3/16”

(3-5 mm)

Burner tube

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.

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