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12
ELECTRIC EQUIPMENT
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.
These models are equipped with one electric heater for
120 volt AC.
To replace the heater proceed as follows:
1. Disconnect the wall plug, and the 12 volt wires.
2. Remove the power module cover see FIG. 1.
3. Disconnect the heater leads.
4. With a pair of pliers unfold the lug holding the lid of
the boiler casing and open the lid.
5. Remove some insulation wool so that the heater is
accessible.
6. Turn and lift the heater out of its pocket.
7. Fit the new heater into the pocket.
8. Connect the leads and put on the power module
cover.
9. Reset the insulation and close the lid of the boiler.
FUSES
These models are equipped with 2 fuses, one for the
refrigerator control system, and one for the AC cartridge
heater. (See table below).
To replace fuse(s) proceed as follows.
1. Disconnect the wall plug, and the 12 volt wires.
2. Remove the power module cover. See FIG. 1.
3. Snap the fuse out of the fuse holder.
4. Fit a new fuse in to the fuse holder.
5. Replace the power module cover.
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 per-
formed by a qualified technician who is familiar with
LP gas systems and refrigerators.
1. REFRIGERATOR REMOVAL
Before working on the refrigerator, make sure the AC
voltage and DC voltage leads are disconnected. Shut
off the gas supply at the LP tank. Disconnect the gas
supply line at the rear of the refrigerator, see FIG. 1.
Always use a back up wrench when loosening and tight-
ening connections.
Cap the gas supply line, loosen the screws anchoring
the refrigerator to the enclosure and slide the refrigera-
tor out of the compartment.
When replacing the refrigerator make sure that the seal-
ing 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.
2. 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 ser-
viceman who is familiar with LP gas systems and refrig-
erators.
GAS EQUIPMENT ASSEMBLY
FIG. 12
INLET FITTING
NUT
MANUAL SHUTOFF VALVE .
Shown in open position
PRESSURE TEST PORT .
BURNER JET .
BURNER MOUNTING SCREW
BURNER TUBE
SPARK ELECTRODE
THERMOCOUPLE
SOLENOID VALVE .
Control system 3 Amp
AC heater 5 Amp