Dometic NDR 1402 Installation And Operating Instructions For Manual And Remote Control Options
INSTALLATION AND
OPERATING INSTRUCTIONS
REFRIGERATOR FOR LP-GAS AND ELECTRIC OPERATION
NDR 1402
USA Corporate Office CANADA
Service Office 2320 Industrial Parkway Elkhart, IN 46515 Dometic Distribution Inc.
Dometic Corporation 866 Langs Drive
509 South Poplar Street Cambridge, Ontario
LaGrange, IN 46761 For Service Center Assistance N3H 2N7 Canada
Phone: 260-463-4858 Call: 800-544-4881 Phone: 519-653-4390
825 12 23-00
®
®
Contents:
Page
Installation 4
Operating Instructions 8
Maintenance & Service 12
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Dont touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
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.
Pour votre sécurité
Si vous sentez une odeur de gaz:
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
Ne pas entreposer ni utiliser de lessence ni
dautres vapeurs ou liquides inflammables à
proximité de cet appareil ou de tout autre
appareil.
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 demploi fourni avec lappareil. Pour obtenir de
laide ou des renseignements supplémentaires, consultez un installateur ou un service
dentretien qualifié ou le fournisseur de gaz.
3
Refrigerator control panel
FIG. 2
GAS
AC
ON
OFF
AES
AUTO
CHECK
COLD
COLDEST
1
2
34
5
12 3
AC
BD
E
LEGEND 2-WAY AES Model
1. Main Power Button ON/OFF
2. AES/AUTO/GAS Mode Selector Button
3. Temperature Selector Button
A. AC Mode Indicator Lamp
B. AES/AUTO Mode Indicator Lamp
C. GAS Mode Indicator Lamp
D. CHECK Indicator Lamp
E. Temperature Indicator Lamps
FIG. 1
12V DC
Heaters
Power module
and fuses
Protection cover
Flue baffle
Burner jet
Manual gas
shutoff valve
Inlet fitting
12 Volt
Terminal block
Reigniter
Flexible cord, Refrigerator
Drain water hose
4
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 Z21.19CSA 1.4 Refrigerators using gas fuel.
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.
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.
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.
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 threeprong 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 right side of the refrigerator (viewed from
the rear) and approximately 10 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.
! WARNING
FIG. 3
10
120 Volt AC
receptacle
5
12 Volts DC Connection
The refrigerator model NDR 1402 require a continuous
12 volt DC supply (even though 2-way models are designed to operate on 120 volts AC and gas, a 12 volt DC
control is required to maintain the automatic energy system). The connection is made to the positive (+) and
negative (-) terminals of the terminal block on the back
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.
The distance the current must travel from the battery to
the refrigerator dictates the AWG wire size to be used.
Should the wire be too small for the distance, a voltage
drop will result.
Recommended wire sizes are shown below.
Caution: Use care when installing the refrigerator. This
refrigerator is equipped with the latest vacuum insulated
panel technology. These insulating panels are located
on the Top, Back, Bottom, Sides and Doors of the refrigerator.
If the surface is punctured, loss of insulation will occur,
resulting in poor refrigerator performance.
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.
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. The sealing should provide a complete isolation of the appliances combustion system from
the vehicle interior.
NOTE: Be careful not to damage the sealing strip when
the refrigerator is put in place.
The wires from the battery to the refrigerator must be of
large enough size to handle the load. The connections
must be clean, tight and free from corrosion.
INSTALLING REFRIGERATOR IN
ENCLOSURE
The transport support at the rear of the refrigerator can
be removed if necessary for the installation of the refrigerator in the enclosure. (See figure above).
NOTE: 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.
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 plates, as shown in FIG. 5.
MAXIMUM TOTAL CONDUCTOR WIRE LENGTH
(in feet and meters)
Wire length AWG
17 ft.
14
5 m
27 ft.
12
8 m
FIG. 4
6
2. Secure the refrigerator and the lower front strip with
two screws: One screw through each hinge. See
FIG 6.
Step 2: Two screws installed in the top frame.
Open the doors and fasten the refrigerator with two
screws through the holes underneath the top decoration
panel. See FIG. 7.
Failure to follow the sequence in securing refrigerator in
enclosure can cause leakage between the frame and
cabinet.
Any space between the counter, storage area or ceiling
and top of the refrigerator greater den 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 hole must be drilled in the cut out opening of the
base plate at the rear of the refrigerator. 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 LP gas supply.
To test the gas safety shutoff, proceed as follows:
1. Start the refrigerator according to the instructions,
and switch to GAS mode. (See start up instructions).
2. Check that the gas flame is lit and the GAS mode
indicator lamp (C) 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
(D) should be on and the GAS mode indicator lamp
(C) should be off.
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 noncorrosive 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 five minutes.
STEP 3: Two screws installed in the rear base.
See FIG. 8.
FIG. 5
FIG. 6
FIG. 7
FIG. 8
Hole for drain
water hose
7
CERTIFIED INSTALLATION
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.
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.
NOTE: The upper vent should be centered over the
condenser coil at the back of the refrigerator.
VENTILATION HEIGHTS
CLEARANCES
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 vent to the roof material. For ventilation
height, see table VENTILATION HEIGHTS
See Figures 9, and 10.
LOWER VENT CUTOUT
13-5/8
28-5/8
FIG. 9
Ventilation
height
Condenser
FIG. 10
Installation with roof Minimum ventilation
vent and lower side vent heights in:
Refrigerator Inches mm
NDR 1402 69-1/8 1756
K
L
NOTE: Wood Strip
MUST be in place
G
K
N
M
8
OPERATING
INSTRUCTIONS
IMPORTANCE OF LEVELING A
REFRIGERATOR
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).
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.
OPERATION
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 an Automatic Energy
Selector (AES) control system, which can automatically
select the most suitable energy source which is available, either 120 Volt AC, or LP gas operation. The system can be set by the user to be fully automatic, or if
desired, LP gas only. The refrigerator controls will work
down to 9.6 volt DC.
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.
! WARNING
Overall Recess
Refrigerator Dimensions Dimensions
Model
Height Width Depth Height Width Depth
AB C H WD
inch 64-17/64 33-11/16 29-5/8 63-3/16 32-3/4 26-1/16
NDR 1402
mm 1632 855 752 1605 832 662
This method of installation and these clearances will give you adequate space for service and proper installation.
FIG. 11
Side view View from above
D
HA
D
W
C
B
9
THERMOSTAT
The thermostat on the refrigerator controls both the gas
and electric operation, thereby eliminating the necessity of resetting each time a different energy source is
employed.
After the initial start-up, the thermostat should be moved
from COLDEST to the desired temperature setting,
usually at mid 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 refrigerator, including the interior light.
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. Press the TEMPERATURE SELECTOR button (3)
until the lamp at the desired setting is illuminated.
AES/AUTO MODE
1. Press the AES/AUTO/GAS mode selector button (2)
to turn ON the AES/AUTO lamp (B). If 120 volts is
available, the AC mode indicator lamp (A) will illuminate indicating AC operation. If 120 volts AC is not
available, the GAS indicator lamp (C) will illuminate
indicating the control has automatically switched to
the GAS mode.
2. If the CHECK indicator lamp (D) illuminates and the
GAS mode indicator lamp (C) is off, the controls have
failed to ignite the burner in the GAS mode. GAS
operation may be reset by pressing the main power
ON/OFF button (1) to the OFF then ON position. (See
step 2 under GAS MODE).
3. Press the TEMPERATURE SELECTOR button (3)
until the lamp at the desired position is illuminated.
GAS MODE
1. Press the AES/AUTO/GAS mode selector button (2)
to turn OFF the AES/AUTO lamp (B). The GAS mode
indicator lamp (C) will illuminate. Within 45 seconds
the burner should be ignited and operating normally.
2. On the initial refrigerator start-up, it may take longer
than 45 seconds to allow air to be purged from the
gas line. If the gas does not ignite within 45 seconds
the CHECK indicator lamp (D) will illuminate and the
GAS mode indicator lamp (C) will go off.
To reset when the CHECK indicator lamp (D) is illuminated, press the main power ON/OFF button (1)
to the OFF and then ON position.
NOTE: Do not continue to reset GAS operation if the
CHECK indicator lamp continues to be illuminated
after several tries.
3. Press the TEMPERATURE SELECTOR button (3)
until the lamp at the desired position is illuminated.
DISPLAY PANEL
GAS
AC
ON
OFF
AES
AUTO
CHECK
COLD
COLDEST
1
2
345
12 3
AC
BD
E
10
DESCRIPTION OF OPERATING
MODES
AES/AUTO MODE
When operating in the AES/AUTO mode, the AES/AUTO
mode indicator lamp (B) will illuminate. The control system will automatically select between AC and GAS operation with AC having priority over GAS. Either the AC
indicator lamp (A) or the GAS indicator lamp (C) will
illuminate depending on the energy source selected by
the control system. 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 regardless of the status of GAS operation.
GAS MODE
When operating in the GAS mode the AES/AUTO mode
indicator lamp (B) will be off and the GAS mode indicator lamp (C) will be illuminated. 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 (D) will illuminate and the GAS mode indicator lamp (C) will turn off.
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.
If the control is switched to AC operation while the CHECK
indicator lamp is on, it will function properly, but the
CHECK indicator lamp will not go off until the main power
ON/OFF button is pressed to the OFF then ON position.
LIMP MODE OF OPERATION
This control system contains a feature where it will continue to operate the cooling system in the event of a failure of a major operating component. Two different modes
of operation can occur in this category.
If for some reason the display module becomes non functional, the control system will revert to full automatic
operation selecting the best energy source available with
AC, GAS priority. The temperature of the refrigerator
will be maintained at the MID position within normal temperature tolerances. The power module will continually
attempt to reestablish operation of the display module.
The second limp mode of operation will execute when a
failure of the temperature sensing device or associated
electronic circuitry occurs. If this should occur, the control system will operate on the energy source selected
via the control panel. The cooling unit will run continuously on the selected energy source. The refrigerator
will continue to operate in this mode indefinitely or until
a new sensor is installed and the system is reset.
DISPLAY PANEL
E
GAS
AC
ON
OFF
AES
AUTO
CHECK
COLD
COLDEST
1
2
345
12 3
AC
BD
11
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.
When the refrigerator is heavily loaded, it will take a
longer time to lower the temperature; therefore, to get
maximum efficiency the refrigerator and food items
should be precooled prior to loading. The shelves should
not be covered with paper or plastic, and the food items
should be arranged so air can circulate freely.
If you need more space in the refrigerator you can lift up
the front of the second shelf from the top and push the
shelf in, the shelf will fall down against the finned evaporator. This shelf cannot be relocated to a different position within the refrigerator.
The middle shelf is a sliding shelf, to slide out grasp the
front of the shelf and pull forward. Push the shelf in to
return to original position. This shelf cannot be relocated
to a different position within the refrigerator.
The lower door shelf is designed for large containers or
bottles (1/2-gallon milk or juice).
FROZEN FOOD STORAGE
COMPARTMENT
Quick frozen soft fruits and ice cream should be placed
in the coldest part of the compartment, which is on the
top freezer shelf. Frozen vegetables, may be stored in
any part of the compartment.
This compartment is not designed for deep or quickfreezing 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.
Total Refrigerated Volume 13.2 cu.ft.
Ice making
Ice cubes can be made in ice trays placed in the freezer
compartment. For faster ice making, the trays should be
placed in direct contact with the aluminum shelf.
Ice will be made more rapidly if the thermostat is set at
its highest position. It is a good idea to do this a few
hours before the anticipated need for ice, but be sure to
move the thermostat back to normal setting, usually
about mid setting when the ice is formed. Food in the
fresh food compartment may be frozen if the setting is
left on COLDEST position.
Freezer door
The freezer door has three wire door baskets for frozen
food items, such as bagged vegetable.
Freezer compartment
The freezer compartment has two sliding wire baskets
for more convenient access to the frozen foods.
DEFROSTING
Shut off the refrigerator by pressing the main power ON/
OFF button to the UP (OFF) position.
Empty the refrigerator, leaving the drip tray under the
finned evaporator, and the cabinet and freezer doors
open. Filling ice trays with hot water and placing them
on the freezer shelves can reduce defrosting time.
When all the frost has melted, dry the interior of the refrigerator and freezer with a clean cloth. Replace all food
and set the thermostat to the COLDEST temperature
setting for a few hours. Then reset the thermostat to the
desired setting, usually at mid setting.
12
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 shelves. They
can create a leak in the ammonia system.
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, ice trays
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.
FUSES
This model is equipped with 2 fuses, one for the refrigerator control system and one for AC cartridge heater.
(See table below).
To replace fuses 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.
! CAUTION
! 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 protec-
tion (less than 2-weight % of the coolant).
ELECTRIC EQUIPMENT
HEATERS
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 a series connected twin
heater.
To replace the heater proceed as follows:
1. Disconnect the wall plug, and the 12 volt wires.
2. Remove the protection cover see FIG. 1
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.
11. Replace the protection cover.
Control system 3 Amp
AC heater 5 Amp
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. 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. 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.
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 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.
13
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 immediately by a QUALIFIED SERVICEMAN
WHO IS FAMILIAR WITH GAS SYSTEM AND REFRIGERATORS.
6. Remove the burner mounting screws and remove the
burner assembly. (See FIG. 12).
7. Remove the wire and the 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).
! 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.
FIG. 13
Clear blue color
of flame
GAS EQUIPMENT ASSEMBLY
SOLENOID VALVE
INLET FITTING
MANUAL SHUTOFF VALVE
Shown in open position
PRESSURE TEST PORT
BURNER JET
SPARK ELECTRODE
BURNER TUBE .
THERMOCOUPLE
BURNER MOUNTING
SCREWS
FIG. 12
! WARNING
DO NOT use a flame to check for gas leaks.
C. Check the AES control system by connecting/discon-
necting 120 volt AC power, start/stop the engine, etc.
Compare the operation with the operation described
in description of operating modes. Page 10.
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 power to the refrigerator.
3. Turn manual shutoff valve to OFF. (See FIG. 1).
4. Remove cover from the burner housing. (See FIG. 1).
5. Disconnect the wire from the high voltage electrode.
14
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 elec-
trode. Check the electrode for proper location and
gap. (See FIG. 14).
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. Improperly set thermostat.
(See section Operating Instructions, part Start Up
Instructions.)
G. Burner dirty.
Clean. (See section Maintenance & Service, Item
2. Periodic Maintenance, Paragraph E. Item 1-14.)
H. LP gas pressure low at burner.
Set main regulator so pressure does not drop
below 11 inches water column at pressure tap.
I. Burner not located properly under flue tube.
Relocate.
J. Burner damaged.
Replace.
K. Odors from fumes.
1. Dislocated burner.
2. Damaged burner.
3. Dirty flue tube.
L. FUSES
1. Refrigerator AC Supply.
2. Control system. See page 12, part Fuses.
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.
FIG. 14
Electrode
Burner tube
1/8 to 3/16
(3-5 mm)
12. Turn on manual gas shutoff valve and check all fittings for leaks.
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.
3. REPLACING A HALOGEN LAMP
Turn off the refrigerator before replacing the lamp.
Wear gloves as protection against hot lamp, broken
glass and as protection of the new lamp.
Refrigerator
The lamp is located at the top of the refrigerator compartment.
To replace the lamp proceed as follows:
unhook the tab on the lamp cover by pressing in
with the thumb on the side of the lamp cover.
remove the lamp cover.
with gloves, pull out the lamp from the socket and
replace it with a new 12V, 10-watt halogen lamp
base G4.
replace the lamp cover by placing the two tabs into
the corresponding slots of the lamp house and
press the tab into place.
Freezer
The lamp is located on the right side of the freezer compartment.
To replace the lamp proceed as follows:
unhook the tab on the lamp cover by pressing in
with the thumb on the side of the lamp cover.
remove the lamp cover.
with gloves, pull out the lamp from the socket and
replace it with a new 12V, 5-watt halogen lamp
base G4.
replace the lamp cover by placing the two tabs into
the corresponding slots of the lamp house and
press the tab into place.
! CAUTION
15
CERTIFIED VENT SYSTEM KITS
REFRIGERATOR KIT
MODEL NO. COMPONENTS PART NO.
NDR 1402 5A Roof Base 3103633.XXX*
Roof Cover 3103634.XXX*
Lower Side Vent 3109349.XXX*
Power Vent Asm. 3108705.744**
* Fill in XXX with color code numbers. For color codes, contact your supplier.
** Alternate instructions forwarded with the Ventilator Kit.
For further information contact your dealer or distributor.
SPARE PARTS
The following list is a list of commonly used parts, which
should be available, if required, from your Dometic Service Center.
Part No. Description
17 37 72-01/3 Heater, 120V, 420W
(2x 60V, 210W)
95 50 01-67/2 Burner pipe, cpl.
200 74 19-33/2 Jet, No. 76
293 11 32-02/7 Spark ignition device
293 27 81-02/0 Electrode, with conductor
293 18 26-02/4 Thermocouple
385 04 52-01/6 Lamp cover
385 04 55-01/9 Halogen lamp, food compartment
12V, 10W with base G4
385 04 55-02/7 Halogen lamp, freezer compartment
12V, 5W with base G4
293 25 83-04/6 Doorshelf, 3 pieces (upper)
293 25 77-03/0 Doorshelf, 2 pieces
385 04 45-01/0 Doorshelf, (lower)
385 04 46-01/8 Doorshelf, 2 pieces freezer (upper)
385 04 42-01/7 Crisper, 2 pieces
293 26 58-01/2 Bottle holder, 5 pieces
293 26 67-05/4 Baffle
Replacement Parts Suppliers: See page 1.
Contact an authorized service center for
parts and repairs as needed.
16
Put a screwdriver into the slot of the shelf lock.
Turn the screwdriver counterclockwise.
Remove the shelf locks from the wire shelf.
Slide the wire shelf to the left.
The right-hand side of the shelf will come loose.
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.
Slide the shelf into the holes on the right-hand
side.
Insert the ends of the wire shelf on the left-hand
side at the desired position.
Positioning of shelves
17
18
19
20
MO-FO 0305
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