13
SECTION D. MAINTENANCE AND SERVICE
1. PERIODIC MAINTENANCE
To keep your Dometic refrigerator operating efficiently
and safely, periodic inspection and cleaning of several
components is recommended once or twice a year.
A. It is important to keep the area at the back of the
refrigerator clear. Check the lower vent, upper vent
and the area between these openings for any ob-
structions such as bird/insect nests, spider webs,
etc. It is important to keep the refrigerator area free
from combustible material, gasoline and other flam-
mable liquids or vapors.
NOTE: The following maintenance is required once or
twice a year, but should only be done by a qualified
serviceman who is familiar with LP gas systems and
refrigerators.
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 noncorrosive bubble
solution to all LP gas connections. The appearance of
bubbles indicates a leak and should be repaired imme-
diately by a QUALIFIED SERVICEMAN WHO IS
FAMILIAR WITH LP GAS SYSTEMS AND REFRIG-
ERATORS.
The user should be aware of service that must be done on a regular schedule to keep the refrigerator operating
properly. The service should only be performed by a qualified technician who is familiar with LP gas systems and
refrigerators.
Tips for the Service Technician
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 noncorrosive
bubble solution to all LP gas connections.
DO NOT USE A FLAME TO CHECK FOR GAS LEAKS.
C. Check burner flame for proper appearance. The flame
should be light blue with no yellow at the tip. (See FIG.
15)
D. CHECK GAS PRESSURE
The LP gas pressure should be checked and readjusted if
necessary. The correct operating pressure is eleven inches
of water column. The correct place to take the pressure
reading is at the test port just ahead of the main orifice. (See
FIG. 15)
E. CLEANING FLUE TUBE, BURNER & BURNER JET
NOTE: Before working on the refrigerator, make sure
that 120 volt AC and optional 12 volt DC leads are discon-
nected. Shut off Gas valve.
THE BURNER AND BURNER JET:
The color of the flame should be clear blue of the slots of
the burner (FIG. 15).
Once or twice a year, depending upon use, clean and adjust
the burner assembly. Proceed as follows:
1. Remove protection plate from the burner housing.
2. Disconnect the wire from the high voltage electrode.
3. Remove the burner mounting screws and remove the
burner assembly.
4. Clean the burner tube with a brush. Blow with com-
pressed air.
5. Remove the burner jet. Soak the jet in wood alcohol and
blow it out with compressed air. NEVER use a wire pin
to clean the burner jet.
! 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.
6. Remove the flue cap from top of flue tube and lift out the
wire and spiral baffle. Clean the flue from the top, using
a flue brush. Replace spiral baffle and flue cap.
7. Remove all loose scale, soot, etc. from area below the
flue pipe. (See FIG.15).
8. Reassemble.
9. Be careful that the end of the burner fits into the slot on
the bracket. The slots of the burner must be centrally
located under the flue tube.
FIG. 15
THERMOCOUPLE
SCREW
RETAINER
THERMOCOUPLE
CONNECTION
BURNER
JET
TEST
PORT
CLEAR BLUE COLOR
OF FLAME
