Operating instructions | Dometic RM2852 Refrigerator User Manual

®
INSTALLATION AND
OPERATING INSTRUCTIONS
REFRIGERATOR FOR LP-GAS AND ELECTRIC OPERATION
RM2652
RM2852
Contents:
Installation
Operating Instructions
Maintenance & Service
FOR YOUR SAFETY
Page
4
8
12
Pour votre sécurité
If you smell gas:
Si vous sentez une odeur de gaz:
1. Open windows.
2. Don’t touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
1. Ouvrez les fenêtres.
2. Ne touchez à aucun interrupteur.
3. Éteignez toute flamme nue.
4. Avertissez immédiatement votre fournisseur de gaz.
Pour votre sécurité
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
Ne pas entreposer ni utiliser de l’essence ni
d’autres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre
appareil.
WARNING: Improper installation,
adjustment, alteration, service or
maintenance can cause injury or
property damage. Refer to this
manual. For assistance or additional
information consult a qualified
installer, service agency or the gas
supplier.
Avertissement: Une installation, un réglage,
une modification, une réparation ou un
entretien non conforme aux normes peut
entraîner des blessures ou des dommages
matériels. Lisez attentivement le mode d’emploi fourni avec l’appareil. Pour obtenir de
l’aide ou des renseignements supplémentaires, consultez un installateur ou un service
d’entretien qualifié ou le fournisseur de gaz.
®
USA
Service Office
Dometic Corporation
2320 Industrial Parkway
Elkhart, IN 46515
Phone: 574-294-2511
Corporate Office
2320 Industrial Parkway Elkhart, IN 46515
For Service Center Assistance
Call: 800-544-4881
822701206 MO-FO 0327 (French 3309599.003)
CANADA
Dometic Distribution Inc.
866 Langs Drive
Cambridge, Ontario
N3H 2N7 Canada
Phone: 519-653-4390
Heater
Cover,
Reigniter
Flue baffle
Power module
cover
Protection
cover
12V DC
Screw for protection cover
12 volt
Terminal block
FIG. 1
Burner jet
Drain water hose
Flexible cord
Inlet fitting
Manual gas
shutoff valve
Refrigerator control panel
A
ON
B
CHECK
AUTO
1
2
OFF
GAS
AUTOMATIC REFRIGERATOR TEMPERATURE CONTROL
LEGEND
C
1. Main Power Button ON/OFF
2. AUTO/GAS Mode Selector Button
A. AUTO Mode Indicator Lamp
B. CHECK Indicator Lamp
(GAS Mode Only)
C. Climate Control Switch
FIG. 2
3
INSTALLATION
GENERAL INSTRUCTION
This appliance is designed for storage of foods and
storage of frozen foods and making ice.
This appliance is certified under the latest edition of
ANSI Z21.19•CSA 1.4 Refrigerators using gas fuel.
The lower side vent is fitted with a panel, which provides
an adequate access opening for ready serviceability of
the burner and control manifold of the refrigerator. This
should be centered on the back of the refrigerator.
GAS CONNECTION
Hook up to the gas supply line is accomplished at the
manual gas valve, which is furnished with a 3/8" SAE
(UNF 5/8" -18) male flare connection. All completed connections should be checked for leaks with soapy water.
The installation must conform with local codes, or in
absence of local codes, the following standards as applicable.
In the U.S. the installation must conform with:
1. National Fuel Gas Code, ANSI Z223.1/NFPA 54
(latest edition).
2. Recreational Vehicles Code, ANSI A119.2 (latest
edition)
3. Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280.
If an external electrical source is utilized, the refrigerator, when installed, must be electrically grounded in accordance with local codes or, in the absence of local
codes, the National Electrical Code, ANSI/NFPA 70 - (latest edition).
In CANADA, the installation must conform with:
1. Natural Gas and Propane Installation Code,
CSA B149.1
2. CSA Z240 RV Series, Recreational Vehicles.
3. Current CSA Z240.4, Gas-equipped Recreational
Vehicles and Mobile Housing.
If an external electrical source is utilized, the refrigerator, when installed, must be electrically grounded in accordance with local codes or, in the absence of local
codes, the Canadian Electrical Code, CSA C22.1, Parts
I and II - (latest edition).
VENTILATION
The installation shall be made in such a manner as to
separate the combustion system from the living space
of the mobile home or recreational vehicle. Openings
for air supply or for venting of combustion products shall
have a minimum dimension of not less than 1/4 inch.
Proper installation requires one lower fresh air intake
and one upper exhaust vent. The ventilation kits shown
in this instruction manual have been certified for use
with the refrigerator models listed in the Table.
For “Certified Vent System Kits” see page 15.
! WARNING
DO NOT use a flame to check for gas leaks.
The gas supply system must incorporate a pressure regulator to maintain a supply pressure of not more than 11
inches water column.
When testing the gas supply system at test pressures in
excess of 1/2 psi, the refrigerator and its individual shutoff
valve must be disconnected from the gas supply piping
system.
When testing the gas supply system at pressures less
than or equal to 1/2 psi, the appliance must be isolated
from the gas supply piping system by closing its individual manual shutoff valve.
In case detailed instructions on the installation and connection to the gas supply are required, contact your
dealer or distributor.
ELECTRICAL CONNECTION
120 Volts AC Connection
The refrigerator is equipped with a three-prong (grounding) plug for your protection against shock hazards and
should be plugged directly into a properly grounded
three-prong receptacle. DO NOT cut or remove the
grounding prong from this plug. The free length of the
cord is 2 feet and therefore recommended that the receptacle be located to the left side of the refrigerator
(viewed from the rear) and approximately 6 inches from
the floor (see FIG. 3). This allows easy access through
the vent door. The cord should be routed to avoid direct
contact with the burner cover, flue cover or any other
components that could damage the cord insulation.
120 Volt AC
receptacle
The ventilation kits must be installed and used without
modification. An opening toward the outside at floor level
in the refrigerator compartment must be provided for
ventilation of heavier-than-air fuel gases. The lower vent
of the recommended kits is provided with proper size
openings. The flow of combustion and ventilating air must
not be obstructed.
6”
FIG. 3
4
12 Volts DC Connection
This refrigerator model is not designed for 12 volt DC
operation of the cooling system; however, a continuous
12 volt DC must be supplied to the refrigerator to operate the controls. Use a minimum of a 14 gauge wire
between the battery and refrigerator to supply the control voltage.
The connection is made to the positive (+) and negative (-)
terminals located at the rear of the refrigerator. (See
FIG. 1).
Correct polarity must be observed when connecting to
the DC supply.
Do not use the chassis or vehicle frame as one of the
conductors. Connect two wires at the refrigerator and
route to the DC supply.
INSTALLING REFRIGERATOR IN
ENCLOSURE
DO NOT install the appliance directly on
carpeting. Carpeting must be removed or
protected by a metal or wood panel beneath
the appliance, which extends at least full
width and depth of the appliance.
NOTE: A wood strip must be in place across the upper
opening of the enclosure. The top frame of the refrigerator will be anchored to the wood strip with screws.
See FIG. 10.
FIG. 4
NOTE:
The refrigerator must be installed in a substantial enclosure and must be level. When installing the refrigerator
in the enclosure, all areas within the recess in which the
refrigerator is installed must be sealed.
Make sure that there is a complete seal between the
front frame of the refrigerator and the top, sides and
bottom of the enclosure. A length of sealing strip is applied to the rear surface of the front frame for this purpose, see FIG. 4.
Securing the Refrigerator
After the refrigerator is put in place, (ensuring a combustion seal at the front frame), the refrigerator is to be
secured in the enclosure with six screws (not included).
The screws have to be installed in the following order:
STEP 1: Two screws installed through the front base,
which includes the lower front strip installation.
The refrigerator is provided with a lower front strip
(shipped as a loose part). The front strip is to be attached
after the refrigerator is set into the cutout opening.
1. Install the lower front strip by sliding it under the
bottom hinge plate, as shown in FIG. 5. The hinge
plate can be on the right or left side depending on
the door swing.
The sealing should provide a complete isolation of the
appliance’s combustion system from the vehicle interior.
NOTE: Be careful not to damage the sealing strip when
the refrigerator is put in place.
1
2
FIG. 5
5
3
Hole for drain water hose
FIG. 8
FIG. 6
2. Once the lower front strip is slipped under the
hinge, the part is possible to swing into place as
shown in FIG. 6.
3. Secure the refrigerator and the lower front strip with
two screws:
One screw through the hinge, and on the opposite
side one screw through the lower front strip. (FIG. 6).
STEP 2: Two screws installed in the top frame.
The top decoration panel must be removed from the refrigerator before the screws can be installed.
Open the door and gently push the tabs out of the hole
in the hinge with a flat blade screwdriver, (both sides).
See FIG. 7.
Carefully tilt the top decoration panel and lift up to remove from top frame. Be careful not to damage the circuit board and wires.
2
FIG. 7
1
Install the two screws in the top frame, the holes are
accessible from underneath.
Seal the opening for the screws with aluminum tape.
Replace the top decoration panel. Be careful not to pinch
the wires behind the panel.
Make sure the tabs snap back into the holes in the hinge
plate.
STEP 3: Two screws installed in the rear base.
See FIG. 8
Failure to follow the sequence in securing the refrigerator
in the enclosure can cause leakage between the frame
and cabinet.
6
Any space between the counter, storage area or ceiling
and top of the refrigerator greater than 1-1/2 inches
should be blocked. The heat produced at the rear of the
refrigerator will become trapped in this space, making
the top of the refrigerator hot and reduce the efficiency
of the refrigerator.
Drain water hose
A hole must be drilled through flooring see FIG. 8.
The installer MUST make sure that the hose does not
kink when run through the floor. Seal around the hose
that goes through the drilled hole. If a longer hose than
supplied is required to get the water to drain outside of
the vehicle, the installer will have to supply the extra
length of hose.
TESTING LP GAS SAFETY SHUTOFF
The gas safety shutoff must be tested after the refrigerator is connected to the LP gas supply.
To test the gas safety shutoff, proceed as follows:
1. Start the refrigerator according to the instructions
without connecting to 120 volts AC.
2. Check that the gas flame is lit. In AUTO mode the
AUTO mode indicator lamp (A) is on.
3. Close the manual gas shutoff valve at the back of
the refrigerator. (See FIG. 1).
4. Wait for one minute. The CHECK indicator lamp (B)
should be on, and the flame extinguished.
5. Remove protection cover (see FIG. 1) and open the
manual gas shutoff valve. Do not change any button
positions on the control panel. Apply a non-corrosive
commercial bubble solution to the burner jet orifice.
6. No bubbles should appear at the opening of the
burner jet orifice. The presence of bubbles indicates a defective gas safety shutoff, and service is
required.
7. If no bubbles were present at the burner jet orifice,
it should be rinsed with fresh water. Be careful not
to damage the burner jet orifice. Replace cover and
press the main power ON/OFF button (1) OFF and
back ON. Normal operation of the burner should
return. Allow the burner to operate for a minimum
of 5 minutes.
CERTIFIED INSTALLATION
G
Certified installations require one roof vent and one lower
side vent.
For “Certified Vent System Kits” see page 15.
For further information contact your dealer or distributor.
K
K
NOTE: The upper vent should be
centered over the condenser coil
at the back of the refrigerator.
L
FIG. 10
NOTE: Wood Strip
MUST be in place
Minimum
ventilation
height
Condenser
N
M
CLEARANCES
FIG. 9
METHODS OF INSTALLATION
The method of installation is shown in FIG. 9.
It is essential that all maximum or minimum dimensions
are strictly maintained, as the performance of the refrigerator is dependent on adequate flow of air over the rear
of the refrigerator.
VENTILATION HEIGHTS
Installation with roof
vent and lower side vent
Minimum ventilation
heights in:
Refrigerator
Inches
mm
RM2652
RM2852
57-3/4
63-3/4
1465
1620
Minimum clearances in inches to combustible materials
are:
G: Top
0
K: Side
0
L: Bottom 0
M: Rear
0
N: See NOTE: Clearance “N” below.
NOTE: Clearance “M” is between the rearmost part of
the refrigerator and the wall behind the refrigerator.
NOTE: Clearance “N” is the distance between the bottom of the lower side vent to the roof material. For ventilation height, see table VENTILATION HEIGHTS.
See Figures 9 and 10.
7
Side view
View from above
C
D
D
A
H
B
W
FIG. 11
Overall
Dimensions
Refrigerator
Model
Recess
Dimensions
inch
Height
A
54-21/32
Width
B
24-7/8
Depth
C
26-1/32
mm
inch
1388
60-51/64
632
24-7/8
661
26-1/32
Height
H
53-3/4
Width
W
23-11/16
Depth
D
24
RM2652
1365
602
59-15/16 23-11/16
610
24
RM2852
mm
1544
632
661
1522
602
610
This method of installation and these clearances will give you adequate space for service and proper installation.
OPERATING
INSTRUCTIONS
When the vehicle is moving, the leveling is not critical, as
the rolling and pitching movement of the vehicle will pass
to either side of level, keeping the liquid ammonia from
accumulating in the evaporator tubing.
IMPORTANCE OF LEVELING A
REFRIGERATOR
OPERATION
In an absorption refrigerator system, ammonia is liquefied in the finned condenser coil at the top rear of the
refrigerator. The liquid ammonia then flows into the
evaporator (inside the freezer section) and is exposed
to a circulating flow of hydrogen gas, which causes the
ammonia to evaporate, creating a cold condition in the
freezer.
When starting this refrigerator for the very first time, the
cooling cycle may require up to four hours of running
time before the cooling unit is fully operational.
The tubing in the evaporator section is specifically sloped
to provide a continuous movement of liquid ammonia,
flowing downward by gravity through this section. If the
refrigerator is operated when it is not level and the vehicle is not moving, liquid ammonia will accumulate in
sections of the evaporator tubing. This will slow the circulation of hydrogen and ammonia gas, or in severe
cases, completely block it, resulting in a loss of cooling.
Any time the vehicle is parked for several hours with the
refrigerator operating, the vehicle should be leveled to
prevent this loss of cooling.
The vehicle needs to be leveled only so it is comfortable
to live in (no noticeable sloping of floor or walls).
8
Before starting the refrigerator, check that all the manual
gas valves are in the ON position. DO NOT forget the
manual shutoff valve on the rear of the refrigerator see
FIG. 1.
This refrigerator is equipped with a control system, which
can be set to automatically select either 120 volt AC or
LP gas operation (AUTO mode), or if desired LP gas
only (GAS mode).
In both AUTO mode and GAS mode operation, the temperature is controlled by a factory preset temperature
setting.
The refrigerator controls will work down to 9.6 volt DC.
! WARNING
Most LP gas appliances used in recreational vehicles are vented to the outside of the vehicle.
When parked close to a gasoline pump, it is possible that the gasoline fumes could enter this
type of appliance and ignite from the burner
flame, CAUSING A FIRE OR AN EXPLOSION.
FOR YOUR SAFETY, when refueling, shut off all
LP gas appliances which are vented to the outside.
Refrigerator control panel
B
A
ON
CHECK
AUTO
1
2
OFF
GAS
AUTOMATIC REFRIGERATOR TEMPERATURE CONTROL
START UP INSTRUCTIONS
A. A continuous 12 volt DC supply must be available
for the electronic control to function.
B. Press the main power ON/OFF button (1) to the
DOWN position.
C. In AUTO mode operation, the temperature is controlled by a factory preset temperature setting, on the
energy source selected by the control system.
D. In GAS mode operation, the temperature is controlled
by a factory preset temperature setting.
AUTO MODE
1. Press the AUTO/GAS mode selector button (2) to
the DOWN position. The AUTO mode indicator lamp
(A) will illuminate. If 120 volts AC is available, the
control system will select AC operation. If 120 volts
AC is not available, the control system will automatically switch to GAS operation. Within 45 seconds the
burner should be ignited and operating normally.
2. If the CHECK indicator lamp (B) illuminates, the control has failed to ignite the burner on GAS.
To reset when the CHECK indicator lamp (B) is illuminated, press the main power ON/OFF button (1)
to the OFF then ON position.
3. On the initial refrigerator start-up on gas (120 volts
AC is not available), it may take longer than 45 seconds to allow air to be purged from the gas line.
If the refrigerator has not been used for a long time
or the LP tanks have just been refilled, air may be
trapped in the supply lines. To purge the air from the
lines may require resetting the main power ON/OFF
button (1) three or four times. If repeated attempts
fail to start the LP gas operation, check to make sure
that the LP gas supply tanks are not empty and all
manual shutoff valves in the lines are open. If the
problem is still not corrected, contact a service center for assistance.
NOTE: Do not continue to reset GAS operation if the
CHECK indicator lamp continues to be illuminated
after several tries.
4. In AUTO mode operation, the temperature is controlled by a factory preset temperature setting.
GAS MODE
1. Move the AUTO/GAS mode selector button (2) to the
UP position. The AUTO mode indicator lamp (A) will
go off. Within 45 seconds the burner should be ignited
and operating normally.
2. If the CHECK indicator lamp (B) illuminates, the control has failed to ignite the burner on GAS.
To reset when the CHECK indicator lamp (B) is illuminated, press the main power ON/OFF button (1)
to the OFF then ON position.
3. On the initial refrigerator start-up on gas, it may take
longer than 45 seconds to allow air to be purged from
the gas line. If the refrigerator has not been used for
a long time or the LP tanks have been refilled, air
may be trapped in the supply lines. To purge the air
from the lines may require resetting the main power
ON/OFF button (1) three or four times. If repeated
attempts fail to start the LP gas operation, check to
make sure that the LP gas supply tanks are not empty
and all manual shutoff valves in the lines are open. If
the problem is still not corrected, contact a service
center for assistance.
NOTE: Do not continue to reset GAS operation if the
CHECK indicator lamp continues to be illuminated
after several tries.
4. In GAS mode operation, the temperature is controlled
by a factory preset temperature setting.
TO SHUT OFF THE REFRIGERATOR
The refrigerator may be shut off while in any mode of
operation by pressing the main power ON/OFF button
to the UP (OFF) position. This shuts off all DC power to
the control system.
9
Refrigerator control panel
B
A
ON
CHECK
AUTO
1
2
OFF
GAS
AUTOMATIC REFRIGERATOR TEMPERATURE CONTROL
DESCRIPTION OF OPERATING MODES
LIMP MODE OF OPERATION
AUTO MODE
This control system contains a feature where it will continue to operate the cooling system in event of a failure
of a major operating component.
If the control cannot read the temperature sensor and
control to the preset temperature, then the control will
run the cooling unit continuously at the energy source
available.
The refrigerator will continue to operate in this mode indefinitely or until a new sensor is installed and the system is reset.
When operating in the AUTO mode, the AUTO mode
indicator lamp (A) will illuminate.
The control system will automatically select between AC
and GAS operation with AC having priority over GAS. If
the control system is operating with AC energy and it
then becomes unavailable, the system will automatically
switch to GAS. As soon as AC becomes available again
the control will switch back to AC operation.
Gas operation (120 volts AC is not available). The control
system will activate the ignition system and will make
three attempt to light the burner for a period of approximately 45 seconds with two minutes interval. If unsuccessful, the CHECK indicator lamp (B) will illuminate.
To restart an ignition attempt with the CHECK lamp illuminated or to clear (turn off) the CHECK lamp, press the
main power ON/OFF button to the OFF and then ON
position. The control system will attempt a new ignition
sequence.
If 120 volts AC becomes available while the CHECK indicator lamp is on, the CHECK lamp will not turn off until
the main power ON/OFF button is pressed to the OFF
then ON position.
GAS MODE
When operating in the GAS mode, the AUTO mode
indicator lamp (A) will be off. This mode provides LP gas
operation only. The control system will activate the ignition system and will make three attempt to light the burner
for a period of approximately 45 seconds with two minutes interval. If unsuccessful, the CHECK indicator lamp
(B) will illuminate.
To restart GAS operation, press the main power ON/
OFF button (1) to the OFF and then ON position. The
control system will attempt a new ignition sequence.
If the refrigerator has not been used for a long time or
the LP tanks have just been refilled, air may be trapped
in the supply lines. To purge the air from the lines may
require resetting the main power ON/OFF button (1) three
or four times. If repeated attempts fail to start the LP gas
operation, check to make sure that the LP gas supply
tanks are not empty and all manual shutoff valves in the
lines are open. If the problem is still not corrected, contact a service center for assistance.
10
HOW TO USE THE REFRIGERATOR
FOOD STORAGE COMPARTMENT
The food storage compartment is completely closed and
unventilated, which is necessary to maintain the required
low temperature for food storage. Consequently, foods
having a strong odor or those that absorb odors easily
should be covered. Vegetables, salads etc. should be
covered to retain their crispness. The coldest positions
in the refrigerator are under the cooling fins and at the
bottom of the refrigerator. The warmer areas are on the
upper door shelves. This should be considered when
placing different types of food in the refrigerator.
FROZEN FOOD STORAGE
COMPARTMENT
Quick frozen soft fruits and ice cream should be placed
in the coldest part of the compartment, which is at the
bottom of the aluminum liner. Frozen vegetables, may
be stored in any part of the compartment.
This compartment is not designed for deep or quick freezing of food. Meat or fish, whether raw or prepared, can
be stored in the frozen food storage compartment provided they are precooled first in the refrigerator. They
can be stored about three times longer in the frozen food
compartment as compared to the fresh food compartment. To prevent food from drying out, keep it in covered
dishes, containers, plastic bags or wrapped in aluminum
foil.
Ice cubes can be made in the freezer compartment.
For faster ice making, the trays should be placed in direct
contact with the bottom of the freezer compartment.
Refrigerator volume.
Total refrigerated volume is 6 cu.ft. for the model RM2652.
Total refrigerated volume is 8 cu.ft. for the model RM2852.
DEFROSTING
Shut off the refrigerator by pressing the main power
ON/OFF button to the UP (OFF) position. Use a tape to
close the light switch or remove the lamp bulb. Empty
the refrigerator, leaving the drip tray under the finned
evaporator, and the cabinet and freezer doors open.
Defrosting time can be reduced by filling the ice trays
with hot water and placing them in the freezer compartment.
! CAUTION
When all the frost has melted, dry the interior of the refrigerator with a clean cloth. Replace all food and turn
your refrigerator back on.
CLEANING
Cleaning the refrigerator is usually done after it is defrosted
or put into storage. To clean the interior liner of the refrigerator, use lukewarm weak soda solution. Use only
warm water to clean the finned evaporator, gasket, ice
tray and shelves.
NEVER use strong chemicals or abrasives to clean these
parts, as the protective surfaces will be damaged. It is
important to always keep the refrigerator clean.
SHUT OFF- (STORAGE PROCEDURE)
Shut off the refrigerator by pressing the main power ON/
OFF button to the UP (OFF) position.
If the refrigerator will not be in operation for a period of
weeks, it should be emptied, defrosted, cleaned and the
doors left ajar. The ice trays should also be dried and
kept outside the cabinet.
! WARNING
DO NOT store explosive substances in the refrigerator, such as cigarette lighter gas, gasoline, ether or
the like.
NOTE: Sodium chromate is used for corrosion protection (less than 2 weight % of the coolant).
CLIMATE CONTROL
During the summer months of high temperatures and
humidity, the metal frame between the freezer and fresh
food compartments may have water droplets forming.
The number of water droplets will increase if the vehicle
isn’t air conditioned during these months.
This refrigerator comes standard with a 12 volt (DC)
climate control that will evaporate the water droplets
when they form.
To have the climate control on, you position the switch
(“C” see figure 2) located beneath the top decoration
panel that houses the control panel to ON.
The climate control can be left on continuously or only
used when temperatures require it.
NOTE: The climate control will draw 12 volt DC power
continuously when in the ON position. It should be turned
OFF when a charging source is not available.
DO NOT use a hot air blower. Permanent damage
could result from warping the metal or plastic parts.
DO NOT use a knife or an ice pick, or other sharp
tools to remove frost from the freezer compartment.
They can create a leak in the ammonia system.
11
GAS EQUIPMENT ASSEMBLY
NUT
SOLENOID VALVE .
THERMOCOUPLE
INLET FITTING
MANUAL SHUTOFF VALVE .
Shown in open position
SPARK ELECTRODE
PRESSURE TEST PORT .
BURNER TUBE
FIG. 12
BURNER JET .
BURNER MOUNTING SCREW
ELECTRIC EQUIPMENT
MAINTENANCE & SERVICE
CARTRIDGE HEATER
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.
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.
2.
3.
4.
5.
6.
7.
8.
9.
Disconnect the wall plug, and the 12 volt wires.
Remove the power module cover see FIG. 1.
Disconnect the heater leads.
With a pair of pliers unfold the lug holding the lid of
the boiler casing and open the lid.
Remove some insulation wool so that the heater is
accessible.
Turn and lift the heater out of its pocket.
Fit the new heater into the pocket.
Connect the leads and put on the power module
cover.
Reset the insulation and close the lid of the boiler.
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 tightening connections.
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 connections for gas leaks.
Refer to section INSTALLATION, page 4 to 8.
FUSES
2. PERIODIC MAINTENANCE
These models are equipped with 2 fuses, one for the
refrigerator control system, and one for the AC cartridge
heater. (See table below).
To keep your Dometic refrigerator operating efficiently
and safely, periodic inspection and cleaning of several
components once or twice a year is recommended.
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.
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 obstructions 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.
Control system
AC heater
12
3 Amp
5 Amp
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 QUALIFIED
SERVICEMAN WHO IS FAMILIAR WITH GAS SYSTEM AND REFRIGERATORS.
! WARNING
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.
! WARNING
DO NOT use a flame to check for gas leaks.
C. Check the control system by connecting/disconnecting 120 volt AC power, start/stop the engine, etc.
Compare the operation with the operation described
in section Operating Instructions.
D. The LP gas pressure should be checked and the main
regulator readjusted if pressure is incorrect. The correct operating pressure is 11 inches of water column.
The correct place to take the LP gas pressure is at
the test port just ahead of the burner jet. (See FIG. 12).
E. Inspect the flue baffle. It should be reasonably clean
and free of soot. Heavy soot formation indicates improper functioning of the burner. The flue and burner
both require cleaning in the following manner:
1. Unplug the refrigerator power cord from the 120 volt
AC outlet. (See FIG. 3).
2. Disconnect or shut off the 12 volt DC power to the
refrigerator.
3. Turn manual shutoff valve to OFF. (See FIG. 1 & 12).
4. Remove cover from the burner housing. (See FIG. 1).
5. Disconnect the wire from the high voltage electrode.
6. Remove the burner mounting screw and remove the
burner assembly. (See FIG. 12).
7. Remove the wire and flue baffle from the top of flue
tube. Clean the flue from the top using a flue brush.
Blowing compressed air into the flue will not properly
clean soot and scale out of the flue tube. Replace
the flue baffle.
8. Clean burner tube with a brush. Blow out burner with
compressed air.
9. Before removing burner jet, clean burner area of soot
and scale that fell out of flue tube. Remove the burner
jet. Soak the jet in wood alcohol and blow it out with
compressed air. Reinstall and tighten burner jet.
NOTE: The color of the flame shall be clear blue over
the slots of the burner. (See FIG. 13).
Clear blue color
of flame
FIG. 13
10. Reinstall burner, being careful that the end of the
burner fits into the slot on the burner bracket. Check
to make sure slots are centered under the flue tube
and the thermocouple is positioned properly (tip of
thermocouple extends over two slots of burner).
11. Be sure to reconnect the wire to high voltage electrode. Check the electrode for proper location and
gap. (See FIG. 14).
FIG. 14
Electrode
1/8” to 3/16”
(3-5 mm)
Burner tube
12. Turn on manual gas shutoff valve and check all fittings for leaks with soapy water.
13. Connect 120 volt power cord to the outlet and reconnect or turn on the 12 volt DC power.
14. Check LP gas safety shutoff. See page 6.
TROUBLESHOOTING
The Refrigerator Does Not Cool Properly
A. Burner jet clogged.
Clean. (See Section Maintenance & Service, item 2.
Periodic maintenance, Paragraph E item 1-14.
B. Check level of refrigerator.
C. Venting problem.
Restriction in air flow across cooling unit.
D. Heavy frost buildup on evaporator fins.
Defrost.
E. Flue baffle not inserted properly in flue tube.
F. Burner dirty.
Clean. (See section Maintenance & Service, item 2.
Periodic Maintenance, Paragraph E item 1-14).
G. LP gas pressure low at burner.
Set main regulator so pressure does not drop
below 11 inches of water column at pressure test
port. (See FIG. 12).
13
H. Burner not located properly under flue tube.
Relocate.
I. Burner damaged.
Replace.
J. Odor from fumes.
1. Dislocated burner
2. Damaged burner
3. Dirty flue tube
K. FUSES
1. Refrigerator AC Supply
2. Refrigerator control system
See page 12, part FUSES.
PANEL DIMENSIONS
MAX. THICKNESS 5/32" (4 mm)
REFR. MODELS
TYPE
RM2652
upper
lower
RM2852
upper
lower
NOTE: AVOID SPRAYING WATER THROUGH THE
REFRIGERATOR VENTS WHILE WASHING YOUR RV.
All the above instructions are to be followed closely. The
refrigerator is quality-guaranteed. However, we are not
responsible for any failures caused by improper adjustments and unfavorable installation conditions. Contact
service point or distributor service dept. for assistance.
CHANGING DOOR HINGES FROM ONE
SIDE TO THE OTHER
The refrigerator is equipped with convertible doors. To
change the door swing, consult the parts manual for the
Conversion Kit Number. For further information, please
contact Dometic Corporation listed on the front page.
INSTRUCTIONS FOR MOUNTING
THE DOOR PANEL
The refrigerator is normally delivered without door panels.
Before starting the mounting work, check that the panel
dimensions are in compliance with those given in the
table and the instructions are read thoroughly.
When mounting the panel, proceed as follows:
See figure page 15.
A. Open the door 90 degrees.
On new refrigerators, the decoration strips are
taped inside the door; if installed on the door,
remove the door decoration strip (2) by removing
its three screws (1).
B. Insert the vertical edges into the grooves of the
door frame (3).
C. Push the panel downward so that the lower horizontal edge of the panel (4) is fitted into the bottom
grove (5).
D. Put the decoration strip across the door so that the
gap is covered. Secure the decoration strip with the
three screws removed in Step A (1).
HEIGHT
MAX.
MIN.
WIDTH
MAX.
MIN.
mm
inch
mm
inch
403
15-27/32
827
32-9/16
401
15-25/32
825
32-1/2
527
20-3/4
527
20-3/4
524
20-5/8
524
20-5/8
mm
inch
mm
inch
403
15-27/32
983
38-11/16
401
15-25/32
981
38-5/8
527
20-3/4
527
20-3/4
524
20-5/8
524
20-5/8
SPARE PARTS
The following list is a list of commonly used parts, which
should be available, if required, from your Dometic Service Center.
A = RM2652; B = RM2852.
Part No.
200 74 19-21/7
293 06 97-07/9
293 27 81-01/2
293 26 67-03/9
293 26 67-04/7
293 11 32-02/7
17 37 68-03/7
293 20 52-01/8
293 25 75-01/8
293 25 76-01/6
293 25 76-01/6
293 25 77-01/4
293 26 21-01/0
293 21 06-01/2
293 20 93-01/2
293 20 93-03/8
Description
A
A
A
A
A
A
A
A
A
A
A
A
A
A
B
B
B
B
B
B
B
B
B
B
B
B
B
B
Jet, No. 58
Burner, with conductor
Electrode
Baffle
Baffle
Spark ignition device
Heater, 325W, 120V
Thermocouple
Door shelf, lower
Door shelf, 2 pieces
Door shelf, 3 pieces
Door shelf, freezer
Box vegetableLamp cover
Handle (light brown)
Handle (black)
293 27 50-08/2 A B Door reversing kit,
right-left (light brown)
293 27 50-09/0 A B Door reversing kit,
left-right (light brown)
293 27 50-11/6 A B Door reversing kit,
right-left (black)
293 27 50-12/4 A B Door reversing kit,
left-right (black)
293 27 50-15/7 A B Door reversing kit,
right-left (silver)
293 27 50-16/5 A B Door reversing kit,
left-right (silver)
Contact an authorized service center for
parts and repairs as needed.
14
1
1
1
2
3
3
1
1
1
4
5
CERTIFIED VENT SYSTEM KITS
*
REFRIGERATOR
MODEL
KIT
NO.
RM2652
RM2852
4A
COMPONENTS
PART NO.
Roof Base
Roof Cover
3103633.XXX*
3103634.XXX*
Lower Side Vent
3109350.XXX*
Fill in “XXX” with color code numbers. For color codes, contact your supplier.
For further information contact your dealer or distributor.
15
Positioning of shelves
Put a screwdriver into the slot of the shelf lock.
Turn the screwdriver counterclockwise.
Remove the shelf locks from the wire shelf.
Insert the ends of the wire shelf on the left-hand
side at the desired position.
Slide the wire shelf to the left.
The right-hand side of the shelf will come loose.
Slide the shelf into the holes on the right-hand
side.
Lower the right-hand side of the wire shelf and
let the left-hand side slide out of the holes in the
wall.
Slide the plastic plugs into the holes of the wall.
Snap the shelf locks onto the wire shelf.
16
RM2652, RM2852
17
18
19
MO-FO 0327
20
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