Dometic RM2852 User Manual download pdf (Page 13)

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 appearance of bubbles indicates a leak and

should be repaired immediately by a QUALIFIED

SERVICEMAN WHO IS FAMILIAR WITH GAS SYS-

TEM AND REFRIGERATORS.

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

! WARNING

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. 14).

12. Turn on manual gas shutoff valve and check all fit-

tings for leaks with soapy water.

13. Connect 120 volt power cord to the outlet and re-

connect 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. Burner dirty.

Clean. (See section Maintenance & Service, item 2.

Periodic Maintenance, Paragraph E item 1-14).

G. LP gas pressure low at burner.

Set main regulator so pressure does not drop

below 11 inches of water column at pressure test

port. (See FIG. 12).

! WARNING

DO NOT use a flame to check for gas leaks.

C. Check the control system by connecting/disconnect-

ing 120 volt AC power, start/stop the engine, etc.

Compare the operation with the operation described

in section Operating Instructions.

D. The LP gas pressure should be checked and the main

regulator readjusted if pressure is incorrect. The cor-

rect operating pressure is 11 inches of water column.

The correct place to take the LP gas pressure 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 DC power to the

refrigerator.

3. Turn manual shutoff valve to OFF. (See FIG. 1 & 12).

4. Remove cover from the burner housing. (See FIG. 1).

5. Disconnect the wire from the high voltage electrode.

6. Remove the burner mounting screw and remove the

burner assembly. (See FIG. 12).

7. Remove the wire and 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).

FIG. 14

Electrode

Burner tube

1/8” to 3/16”

(3-5 mm)

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 19 20

Comments to this Manuals

Mike M. 05 Dec 2024 | 20:28:39

Where is the AC fuse located at? Thank you.

Dometic RM2852 User Manual Page 13

Comments to this Manuals

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