Dometic RM3762 User Manual download pdf (Page 10)

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CLEANING THE FLUE BAFFLE AND BURNER

Inspect the ﬂ ue bafﬂ e. It should be reasonably clean and free of

soot. Heavy soot formation indicates improper functioning

of the burner.

The ﬂ ue and burner require cleaning in the following manner:

Turn off the refrigerator. 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 shutoff valve.

Remove the cover from the burner housing. Remove

the burner mounting screws and then the burner as-

sembly.

Remove the wire and ﬂ ue bafﬂ e from the top of the

ﬂ ue tube. Using a ﬂ ue brush, clean the ﬂ ue from the

top. (Blowing compressed air into the ﬂ ue will

not

properly clean soot and scale out of the ﬂ ue tube.)

Put back the ﬂ ue bafﬂ e.

Clean the burner tube with a brush. Blow out the

burner with compressed air.

Before removing the burner jet:

Clean burner area of soot and scale that fell out of

ﬂ ue tube.

Remove the burner jet.

Soak the jet in wood alcohol and blow it out with

compressed air.

Reinstall and tighten the burner jet.

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 ﬁ re hazard.

Reinstall the burner. Ensure that the end of the

burner ﬁ ts into the slot on the burner bracket. Verify

that the slots are centered under the ﬂ ue tube and the

thermocouple is positioned properly (tip of thermo-

couple extends over two slots of burner).

Check the electrode for proper location and gap.

Turn on the manual gas shutoff valve.

Examine all ﬁ ttings for leaks. (Use a solution of

liquid detergent and water.)

Connect the 120V power cord. Reconnect/turn on

the 12V DC power.

Check the LP gas safety shutoff.

10.

11.

12.

13.

MAINTENANCE & SERVICE

CHECKING THE CONNECTIONS

LP gas is a ﬂ ammable gas which has the potential to create a

hazard. Do not smoke or create sparks when working on or

near the LP gas system.

Do not use an open ﬂ ame to check for gas leaks!

Check all connections in the LP gas system for gas

leaks. The LP gas supply must be turned on.

Apply a non-corrosive bubble solution to all LP gas

connections. The appearance of bubbles indicates a

leak and should be repaired

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

INLET FITTING

NUT

MANUAL SHUTOFF VALVE .

Shown

in open position

PRESSURE TEST PORT .

BURNER JET .

BURNER MOUNTING SCREW

BURNER TUBE

SPARK ELECTRODE

THERMOCOUPLE

SOLENOID VALVE .

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WARNING

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Dometic RM3762 User Manual Page 10

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