Refrigerator Removal; Gas Equipment Assembly; Replacing The Heater Proceed - Dometic RM 2551 Installation And Operating Instruction

MAINTENANCE & SERVICE
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.
1. CARTRIDGE HEATER
The heat necessary for the operation of an absorption
cooling unit is supplied by an electric heater mounted in
a pocket of the boiler system.
This model is equipped with one electric heater for 120
volt AC.
To replace the heater proceed as follows:
1. Unplug the refrigerator power cord from the 120 volt
AC outlet.
2. Disconnect or shut off the 12 volt power to the
refrigerator.
3. Remove the power module cover see FIG. 1
4. Disconnect the heater leads.
5. With a pair of pliers unfold the lug holding the lid of
the boiler casing and open the lid.
6. Remove some insulation wool so that the heater is
accessible.
7. Turn and lift the heater out of its pocket.
8. Fit the new heater into the pocket.
9. Connect the leads and put on the power module
cover.
10. Reset the insulation and close the lid of the boiler.

2. REFRIGERATOR REMOVAL

Before working on the refrigerator, make sure the AC
voltage and DC voltage leads are disconnected. Shut off
the gas supply. Disconnect the gas supply line at the rear
of the refrigerator, see FIG. 1. Always use a back up
wrench when loosening and tightening this connection.
SOLENOID VALVE
INLET FITTING
MANUAL SHUT OFF VALVE.
SHOWN IN OPEN POSITION
PRESSURE TEST PORT
FIG. 12
12

GAS EQUIPMENT ASSEMBLY

BURNER JET
Cap the gas supply line, loosen the screws anchoring
the refrigerator to the enclosure and slide the refrigerator
out of the compartment.
When replacing the refrigerator make sure that the
sealing strips are properly positioned.
Replacement is the reverse of removal. Check all con-
nections for gas leaks.
Refer to section INSTALLATION, page 4 to 8.
3. PERIODIC MAINTENANCE
To keep your Dometic refrigerator operating efficiently
and safely, periodic inspection and cleaning of several
components once or twice a year is recommended.
A. It is important to keep the area at the back of the
refrigerator clean. Check the lower vent, upper vent
and area between these openings for any obstruc-
tions such as bird/insect nests, spider webs, etc.
Clean the coils on the back of the refrigerator. Use a
soft bristled brush to dust off the coils.
It is important to keep the refrigerator area free from
combustible material, gasoline and other flammable
vapors or liquids.
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 non-corrosive
bubble solution to all LP gas connections. The
appearance of bubbles indicates a leak and should
be repaired immediately by a Q UALI FIED
SERVICEMAN WHO IS FAMILIAR WITH GAS
SYSTEM AND REFRIGERATORS.
! WARNING
DO NOT use a flame to check for gas leaks.
NUT
THERMOCOUPLE
SPARK ELECTRODE
BURNER TUBE
BURNER MOUNTING SCREW