Maintenance & Service - Dometic RM3762 Operating Instructions Manual

MAINTENANCE & SERVICE
To keep the refrigerator working properly, a quali-
fied service technician should, at least once a year,
inspect the connections, the control system, the LP
gas pressure, and the flue baffle.
FIRE AND INHALATION HAZARD. If the re-
frigerator stops working -or- if it emits an am-
monia smell, immediately turn the refrigerator
off, leave the vicinity, and contact a Service
Center.
A high concentration of ammonia refriger-
ant could cause an inhalation hazard, could
cause chemical burns to the skin and eyes,
and could cause a fire resulting in death or
serious injury.
REPLACING THE FUSES
The refrigerator is equipped with the following 2
fuses:
• 5 A fuse for 12 VDC.
• 5 A fuse for the AC heating element.
TO REPLACE A FUSE, FOLLOW THESE STEPS:
1. Turn off the refrigerator and unplug the power
cord.
2. Remove the 12 VDC power.
3. Open the power module cover.
4. Snap the fuse out of the fuse holder.
5. Fit the new fuse in to the fuse holder.
6. Close the power module cover.
PERIODIC MAINTENANCE
To be performed by a qualified service technician
only.
CHECKING THE LP GAS 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 an approved leak detection solution to all
LP gas connections. The appearance of bubbles
indicates a leak and should be repaired imme-
diately!
FIRE OR EXPLOSION HAZARD. Never use an
open flame to check for gas leaks. Failure to
obey this warning could cause a fire or explo-
sion resulting in death or serious injury.
CHECKING THE CONTROL SYSTEM
Check the control system by connecting/disconnecting the
120 VAC power, starting/stopping the engine, etc.
CLEANING THE BURNER
1. Turn off the refrigerator.
2. Unplug the power cord from the 120 VAC outlet.
Disconnect the wires or shut off the 12 VDC
power supply to the refrigerator.
3. Turn off the manual shut off valve.
4. Remove cover from burner housing.
5. Clean the burner tube with a brush. Blow out the
burner with compressed air.
FIRE HAZARD. Never use a wire or pin to clear
obstructions from the burner jet as damage
will occur. Do not attempt to adjust the burner
jet. Failure to obey this warning could cause
a fire resulting in death or serious injury.
6. Verify that the burner jet slots are centered under
the flue tube.
7. Be sure to check the burner flame for proper ap-
pearance. The flame should be clear blue over
the slots of the burner.
Slots Centered
Under Flue Tube
8. Check the electrode for proper location and gap.
Adjustments may be made with needle nose pli-
ers if necessary.
Burner tube
9. Turn on the manual gas shut off valve.
10. Examine all fittings for leaks. Use a commercial
non-corrosive bubble solution.
11. Connect the 120 VAC power cord.
12. Reconnect / Turn on the 12 VDC power.
13. Check LP gas safety shutoff.
10
Clear Blue Color
Of Flame
Electrode
1/8" to 3/16"
(3-5 mm)