Dometic RM 4223 manual Fig. Opening In Burner Box, Clear Blue Color Of Flame, Proceed as follows

C. Examination and Cleaning of Flue, Burner and Jet

Once or twice a year, look through the opening (see FIG.

9)in the burner box and examine the appearance of the burner flame which should be predominantly blue in color when the gas thermostat knob is set to its highest position. (Refer to FIG. 10).

If this is not the case, clean the flue, burner, jet, etc. (see section D and E).

FIG. 9

OPENING IN

BURNER BOX

FIG. 10 CLEAR BLUE COLOR OF FLAME

D. Cleaning of Burner, Burner Jet (Refer to FIG.11)

Proceed as follows:

1)Turn off the gas at the gas bottle.

2)By using a phillips screwdriver, remove the screw (B) and carefully withdraw the burner cover box. Clean the inside of the box of soot and other deposits.

3)To clean the burner, unscrew the screw (C) that fixes the burner on the boiler tube and be careful in order not to lose the washer.

4)Clean the inside of the burner.

5)To examine and eventually clean the burner jet, unscrew the gas pipe union (K) and pull out the burner jet (L).

6)Clean the jet by washing it in alcohol and blowing it through with air.

!CAUTION

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.

NOTE: The jet fitted to this refrigerator is a size "43" which is suitable for use on propane gas at 11 inches water column. The orifice in the jet is very small and must never be cleaned by means of a pin or similar instrument as this would damage the orifice. It must only be cleaned as described above.

7)Reassemble the components in the reverse order to that described above.

FIG. 11

E. CLEANING OF FLUE TUBE, FLUE BAFFLE

Proceed as follows:

1)To clean the flue tube and the flue baffle, it is neces sary to withdraw the refrigerator out of the recess. See Section D, Item 1.

2)By using a phillips screwdriver, remove the screw (B, in FIG. 11) and carefully withdraw the burner cover box.

3)Place a piece of paper or cloth between the boiler tube (E, in FIG. 11) and the burner assembly, to catch falling deposits.

4)Remove the "T-piece" (A, in FIG. 12) at the top of the flue by unscrewing the screw (B, in FIG. 12) that fixes it to the flue pipe.

5)Carefully takeout the flue baffle (C, FIG. 12) and clean.

6)Clean the flue tube of soot, etc. with the aid of a spe cial flue brush, available from your supplier.

FIG. 12

11