RECORD THIS UNIT INFORMATION FOR
C
S
L-0938
FUTURE REFERENCE:
Model Number
Serial Number
Date Purchased
MODELS
TJ18, TJ22, TJ42, TJ80
Refrigerator
and
TJF42
USA
Dometic Enviormental
Corporation
200 North Andrews
Avenue Extension
Pompano Beach, FL 33069
954-973-2477
Dometic Enviormental
Corporation
8433 Erie Road
Mechanicsville, VA 23116
804-746-1313
Freezer
U
This manual must be read and understood before installation, adjustment, service, or maintenance
is performed. This unit must be installed by a qualified service technician. Modification of this product can be extremely hazardous
and could result in personal injury
or property damage.
INSTALLATION & OPERATING
INSTRUCTIONS
REVISION
Form No. 3309080.039 1 1/06
(Replaces 3309080.020)
©2006 Dometic Corporation
LaGrange, IN 46761
Important: These Instructions
must stay with unit.
Owner read carefully.
1
MODEL
Series
TJ18
TJ42
TJ80
TJ22
TJF42
WARNING
CAUTION
CAUTION
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
SAFETY INSTRUCTIONS
This manual has safety information and instructions to help users eliminate or reduce the risk of
accidents and injuries.
RECOGNIZE SAFETY INFORMATION
!
This is the safety-alert symbol. When you see
this symbol in this manual, be alert to the potential for personal injury.
GENERAL INFORMATION
A. Before installing your Dometic refrigerator , refer to the
Tundra Installation Check List 3309081.0XX located
in the envelope assembly furnished with your Tundra
Refrigerator.
B. This refrigerator is designed for making ice and the
conservation of food and drinks only .
C. All materials exposed to contact with food comply with
EC directive 89/109.
D. Inst all appliance away from heat sources in a dry and
well-ventilated area. Avoid direct contact with water.
The Refrigerator is not waterproof.
E. This refrigerator complies with EC directive 89/336
governing radio suppression.
Note: The data plate bearing the model number , serial number, and technical data is located on the right-hand side,
inside the refrigerator. An identical dat a plate is located on
the back of the cabinet.
SPECIFICATIONS
Follow recommended precautions and safe operating instructions.
UNDERSTAND SIGNAL WORDS
A signal word , WARNING OR CAUTION is used
with the safety-alert symbol. They give the level
of risk for potential injury.
!
ous situation which, if not avoided, could result
in death or serious injury.
!
ous situation which, if not avoided may result in
minor or moderate injury.
symbol indicates, a potentially hazardous situation which, if not avoided may result in property
damage.
Read and follow all safety information and instructions.
indicates a potentially hazard-
indicates a potentially hazard-
used without the safety alert
A. Danfoss Compressor Data
1. Volt age Operating Range
12 VDC systems: From 10.4 VDC to 17 VDC
24 VDC systems: From 22.8 VDC to 31.5 VDC
The electronic unit will calibrate automatically to
the applied voltage. This means that if the battery
voltage is less than 17 VDC, the electronic unit assumes that it is working in a 12 VDC System. If the
voltage is higher than 17 VDC, the electronic unit
assumes that it is working in a 24 VDC system.
Consequently, the compressor does not run at
power supply voltages between about 17 VDC and
the desired battery protection cutout voltage (22.8
VDC) for 24 VDC systems.
2. Protection Systems
The compressor protection system facilitates protection against compressor overload and start failure as well as destructive battery discharge. When
an overload protection is activated, the compressor enters a cycle in which it makes start attempts
at approximately 60 second intervals until successful start is achieved.
3. Overload Protections
The compressor overload and start protection cuts
off power to the compressor if the compressor
speed drops below approximately 1,900 rpm, or if
this motor speed is not reached during the start
sequence. Possible reasons for overload protection activating could be too high refrigeration system pressures during operation or lack of pressure equalizing at start.
The fan overload protection stops the compressor
and the fan if the fan current exceeds 0.5 A (average) or 1 A (peak).
2
An overheating of the electronic unit heat sink will
cause the compressor to stop. Restart will occur
automatically when a normal temperature has been
reached.
4. Voltage Protection
If a voltage outside the operating range is applied
to the electronic unit, the compressor does not start,
or it stops if the voltage limit is exceeded during
operation. The compressor will restart automatically approximately 1 minute after the supply voltage has reached the reset voltage within the range
in question.
5. Battery Protection
The electronic unit provides protection as follows:
Standard Battery Protection Settings
12 VDC 12 VDC 24 VDC 24 VDC
cutout cutin cutout cutin
10.4 1 1.7 22.8 24.2
ABYC Standards - ABYC Guidelines E9 - Direct Current
Conductor Sizes For 3 % Drop in Voltage
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
Refrigerator Amperage
Model Amperage
12 VDC 24 VDC
TJ18, TJ22 & TJ42 3.72 1.86
TJF42 & TJ80 4.56 2.28
See Amp Draw Chart Above To Determine Wire Size
Length of Conductor from Source of Current to Device and Back to Source - Feet
Total
Current
On Circuit
In Amps 12 Volts - 3% Drop Wire Size (gauge) - Based on Minimum CM Area
5 181614121210101088866666666
10 141210101086666444422222
15 1210108866644222221111
20 101086664422221110002/0
25 10866644222110002/02/02/03/0
30 108664422110002/02/03/03/03/03/0
40 86644221002/02/03/03/03/04/04/04/04/0
50 664422102/02/03/03/04/04/04/0
60 64422102/03/03/04/01 4/0 4/0
70 6422102/03/03/04/04/0
80 6422103/03/04/04/0
90 422102/03/04/04/0
100 422102/03/04/0
5 1818181616141212121010101010 8 8 8 88
10 181614121210101088866666666
15 1614121210108866666444442
20 141210101086666444422222
25 12121010866644442222221
30 1210108866444222221111
40 101086664422221110002/0
50 10866644222110002/02/02/03/0
60 108664422110002/02/03/03/03/03/0
70 866442211002/02/03/03/03/03/04/04/0
80 86644221002/02/03/03/03/04/04/04/04/0
90 8644221002/02/03/03/04/04/04/04/04/0
100 664422102/02/03/03/04/04/04/0
10 15 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
24 Volts - 3% Drop Wire sizes (gauge) - Based on Minimum CM Area
3
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
CAUTION
ABYC Standards - ABYC Guidelines E8 - Alternating Current/Amperage
Temperature Rating of Conductor Insulation
60°C 75°C 80°C 90°C 105°C 125°C 200°C
(140° F) (167°F) (176°F) (194°F) (221°F) (257°F) (392°F)
Conductor Outside Inside Outside Inside Outside Inside Outside Inside Outside Inside Outside Inside or inside
Size Engine Engine Engine Engine Engine Engine Engine Engine Engine Engine Engine Engine Engine
(AWG) Spaces Spaces Spaces Spaces Spaces Spaces Spaces Spaces Spaces Spaces Spaces Spaces Spaces
18 7.0 4.1 7.0 5.3 10.5 8.2 14.0 11.5 14.0 11.9 17.5 15.6 17.5
16 10.5 6.1 10.5 7.9 14.0 10.9 17.5 14.4 17.5 14.9 21.0 18.7 24.5
14 14.0 8.1 14.0 10.5 17.5 13.7 21.0 17.2 24.5 20.8 28.0 24.9 31.5
12 17.5 10.2 17.5 13.1 24.5 19.1 28.0 23.0 31.5 26.8 35.0 31.2 38.5
10 28.0 16.2 28.0 21.0 35.0 27.3 38.5 31.6 42.0 35.7 49.0 43.6 49.0
8 38.5 22.3 45.5 34.1 49.0 38.2 49.0 40.2 56.0 47.6 63.0 56.1 70.0
6 56.0 32.5 66.5 49.9 70.0 54.6 70.0 57.4 84.0 71.4 87.5 77.9 94.5
4 73.5 42.6 87.5 65.6 91.0 71.0 94.5 77.5 112.0 95.2 119.0 105.9 126.0
3 84.0 48.7 101.5 76.1 105.0 81.9 108.5 89.0 126.0 107.1 136.5 121.5 147.0
2 98.0 56.8 119.0 89.3 122.5 95.6 126.0 103.3 147.0 125.0 157.5 140.2 168.0
1 115.5 67.0 136.5 102.4 147.0 114.7 147.0 120.5 171.5 145.8 185.6 165.1 196.0
0 136.5 79.2 161.0 120.8 171.5 133.8 171.5 140.6 199.5 169.6 213.5 190.0 227.5
00 157.5 91.4 185.5 139.1 199.5 155.6 199.5 163.6 231.0 196.4 248.5 221.2 259.0
000 182.0 105.6 217.0 162.8 31.0 180.2 231.0 189.4 269.5 229.1 287.0 255.4 301.0
0000 210.0 121.8 252.0 189.0 269.5 210.2 269.5 221.0 311.5 264.8 332.5 295.9 357.0
(Guidelines when using an AC/DC Converter)
Outside
INSTALLATION INSTRUCTIONS
A. Precautions
1. Read and understand the Installation and Operating instructions before attempting to start your refrigerator installation.
2. The manufacturer assumes no responsibility for
any injuries or damage caused by non compliance
with any of the installation instructions.
3. The refrigerator must be wired and grounded in
accordance with the ABYC Guideline E9 or equivalent. See ABYC Guidelines E9 page 3.
B. Unpacking, Handling, and Inspection In-
structions
!
This refrigerator contains an exposed coil
assembly . T o avoid personal injury , wear protective gloves when unpacking and handling
refrigerator.
1. Inspect packaging for transport damage. Note any
packaging damage that may indicate hidden damage to the refrigerator.
2. Remove refrigerator from packaging.
3. Inspect refrigerator for damage. Report any damage resulting from transport to the dealer no later
than 24 hours after delivery . A notice is printed on
the top of each box, describing the general procedures required.
4. Dispose of packaging material in accordance with
local laws for sorted waste recycling.
C. Ventilation Requirements
All units require ventilation for proper operation. For
models TJ18, TJ22, TJ42 & TJF42 use a minimum of
50 total square inches of ventilation. For model TJ80
use a minimum of 76 total square inches. Two vents
(inlet/discharge) are recommended. See FIG. 1.
2" clearance at the rear of unit is required.
1. Approved Vent Locations
a. TJ18, TJ22, TJ42 & TJF42
(A & C) or (B & D) - Pair Of Grills = 50
Square Inch Minimum
Inlet - 25 Square Inch Minimum
Discharge - 25 Square Inch Minimum
A or B - Single Grill = 50 Square Inch Mini-
mum
b. TJ80
(E & F) - Pair of Grills = 76 Square Inch
Minimum
Inlet - 38 Square Inch Minimum
Discharge - 38 Square Inch Minimum
G or H - Single Grill = 76 Square Inch Mini-
mum
Note: For other vent locations contact Dometic Environmental System’s Application Department
D. Electrical Connection
Important: Route supply wires in a manner that will not
interfere with the placement of the refrigerator. Make sure
the refrigerator is not standing on the power supply cable.
Important: Before connecting the refrigerator to the 12
VDC power supply, check that the line volt age corresponds
to the indications on the refrigerator rating plate and those
of the compressor plate.
4
FIG. 1
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
D
A
2"
2"
B
D
C
Important: The light bulb supplied is a 12 VDC bulb.In a
24 VDC system, you must replace the with a 24 VDC bulb.
Order part 3320018.024
Note: The data plate bearing the model and serial number
and technical data is located inside the refrigerator on the
right-hand side of the cabinet.
1. 12/24 VDC Only Wiring
a. For direct current (DC) refrigerators, connect
the refrigerator to the DC distribution center. A
15 Amp circuit breaker must be installed for
systems using 12 VDC and a 10 Amp if the
system is 24 VDC. Check that all grounding
systems are in good working order. The Ap-
pliance must be wired and grounded in accordance with the ABYC Guideline E9 or
equivalent. See ABYC Guidelines E9 on
page 3.
Important: Make sure that proper polarity is main-
tained at all times.
2. (Refrigerator Power Supply), 120/240 VAC & 12
VDC Convertor.
Note: On TJ18 models the Refrigerator Power Supply is
supplied loose inside the refrigerator. It will need to be
mounted in a dry location close to the refrigerator. See wiring diagram for proper wiring. The Power Supply is mounted
to the rear of the cabinet on all other models.
a. If the refrigerator is equipped with a refrigera-
tor power supply , then both AC and DC power
may be used. The Power Supply functions by
converting AC power into DC power for the
compressor. When the power supply is connected to both AC and DC, and the AC power
is on, then the unit will run on AC power . However, if the AC power is lost, the unit will run on
the DC power. If both types are to be used,
connect the DC wiring to the DC distribution
center, and the AC wiring to the AC distribution center, following ABYC guidelines. The
2"
H
B
E
A
F
G
C
Refrigerator Power Supply may be connected
to either AC or DC power only, if so desired.
For DC wiring, follow the same instructions as
stated in the "DC Only Wiring" section. For AC
wiring, use a 10 Amp circuit breaker maximum.
Check that all wire sizing is correct and that all
grounding systems are in good working order.
The appliance must be wired and grounded in
accordance with the ABCY Guideline E8 or
Equivalent. See ABYC Guidelines E8, p age 4.
Important: Make sure that proper polarity is main-
tained at all times.
OPERATING INSTRUCTIONS
A. Rotary Thermost at
Each refrigerator is fitted with a manual thermostat. It
automatically maintains the set temperature.
1. T o start the refrigerator , turn the thermostat adjustment knob clock-wise. T o start of f with, a mid-range
setting should be selected. See FIG . 2A. Allow the
refrigerator to run at least 12 hours before loading
it with goods.
2. Once the refrigerator is cold, adjust the thermostat knob to obtain the desired temperature. The
thicker the band, the colder the temperature.
3. To turn the refrigerator OFF, rotate the thermostat
adjust knob counter-clock-wise until the indicator
is pointing to OFF. See FIG. 2B
FIG. 2B
OFF
C
R
O
E
L
D
5
FIG . 2A
OFF
C
R
O
E
L
D
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
CAUTION
WARNING
CAUTION
!
B. Loading The Refrigerator
Important:
uids in the freezer compartment. They may break due
to expansion.
The food storage compartment is completely closed
and non ventilated, 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. Veget ables, salads, etc. should be covered to retain their crispness.
The coldest position in the refrigerator is 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.
Do not put glass containers holding liq-
C. Defrosting The Refrigerator
Defrosting should be carried out whenever the frost
layer exceeds a thickness of 1/8". Defrosting is necessary to guarantee efficient refrigeration and to avoid
excessive power consumption. Excess frost buildup
will effect the refrigerator performance.
1. Turn the thermostat adjustment knob to the OFF
position. See FIG. 2B. Keep the door/freezer lid
open to minimize the defrosting time.
1. Exterior
a. Clean the exterior with warm water and then
rinse with cold water.
b. Dry with a soft cloth. Avoid use of abrasive
products.
2. Interior
a. Remove racks, containers and ice trays.
b. Clean the interior using warm water mixed with
baking soda or vinegar.
c. Rinse and dry carefully with a soft cloth.
Important: Do not use abrasive products, detergents or
soap. In the case of prolonged disuse, to avoid the formation of mold or unpleasant odors, disconnect all power supplies, empty the unit completely , clean the interior, and leave
the door/lid ajar.
Cut Hazard. When cleaning condenser, avoid
direct contact with finned section. Fins will
cut and if these instructions are not followed
injury could occur.
3. Condenser
a. Clean the condenser at least once a year us-
ing a vacuum cleaner or dry brush. Do not
clean with sharp objects.
CAUTION
Do not attempt to remove the frost layer using any sharp instruments. This could pierce
the refrigerator plate and cause irreparable
damage.
2. After defrosting, dry the entire interior surfaces, and
then turn the refrigerator back ON. (See Operating Instructions-Section A.)
D. Cleaning The Refrigerator
!
Shock Hazard. Disconnect refrigerator from
the 120 VAC and 12/24 VDC power supply.
Failure to follow these instructions could
cause death or serious personal injury.
6
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
WARNING
TROUBLE SHOOTING GUIDELINES
A. Refrigerator Does Not Operate
1. The thermostat is set to OFF.
2. On 12/24 VDC only models the circuit breaker between the distribution center and the AC power supply has tripped.
3. On models with a Refrigerator Power Supply, the
circuit breaker between the Refrigerator Power
Supply and the AC supply may have tripped or
fuses inside the Refrigerator Power Supply may
have blown.
!
Shock Hazard. The Dometic Refrigerator
Power Supply is considered non-serviceable.
Do not open case for any reason. Failure to
follow these instructions could cause death
or severe personal injury.
4. Power supply cable is faulty or poorly connected.
5. The battery is delivering insufficient power. If the
battery voltage is less than 10.4 VDC (on a 12 VDC
system) or 22.8 VDC (on a 24 VDC system), the
unit will not operate.
6. The voltage on the electronic control unit terminal
board does not correspond with the battery . Or the
voltage drop is over 0.2-0.4 VDC check:
a. The size of the cable connecting the battery to
the electronic control unit corresponds to specifications. See ABYC Guidelines.
b. All connection points in the power supply are
properly tightened.
c. There are no signs of oxidation on the battery
poles and contact points.
7. If a Refrigerator Power Supply or other AC/DC converter is used, check:
a. The AC power source is on.
b. The circuit board terminals are properly con-
nected.
c. Output voltage to the refrigerator is sufficient.
8. Electronic unit heat sink overheating:
a. Insufficient venting.
b. Dirt build up on heat sink. Clean if necessary .
C. Insufficient Cooling
1. The door/lid is not sealed properly .
2. The refrigerator is positioned close to a heat
source.
3. The refrigerator is insufficiently ventilated.
4. Excessive frost buildup on the evaporator.
5. Dust blocking the condenser.
6. The refrigerator is over-filled.
7. Fan not working.
If after checking the above, the refrigerator still does not
function properly, contact your service dealer or Dometic
Corporation Environmental Systems at (804) 746-1313 or
(954) 973-2477. Ask for the Refrigerator Service Department.
B. Excessive Refrigerator Noise
1. The refrigerator is not positioned on a flat surface.
2. The refrigerator is touching other objects that may
cause vibration.
3. The refrigerant lines at the back of the refrigerator
are touching or vibrating against the refrigerator.
4. Fan blade hitting other objects.
7
TJ18, TJ22, TJ42, TJF42 & TJ80 Installation And Operating Instructions
120VAC
24VDC
TPS
BLUE
12V
LIGHT
BLACK
RED
RED
BLUE
FAN
BLACK
REFRIGERATOR
AC
-
WIRING
DIAGRAM
3309070.039
DANFOSS
ELECTRIC
MODULE
THERMOSTAT
RESISTOR
-
+
+
F
D
C
T
P
+
-
BATTERY
120VAC
FIELD
WIRING
FACTORY
WIRING
PASSED
DIELECTRIC
BLACK
RED
P
T
C
D
F
+
-
12/24
VDC
Positive
12/24
VDC
Negative
+
+
-
RESISTOR
THERMOSTAT
MODULE
ELECTRIC
DANFOSS
3309070.021
DIELECTRIC
PASSED
REFRIGERATOR
-
WIRING
DIAGRAM
BLACK
FAN
BLUE
RED
RED
BLACK
12V
LIGHT
BLACK
RED
BLUE
BLACK
RED
RED
BLUE
FAN
BLACK
TJ18F/TJ22F
WIRING
DIAGRAM
LOAD
DUMP
LOCATED
ON
FAR
SIDE
OF
BOARD
PASSED
DIELECTRIC
3309070.005
DANFOSS
ELECTRIC
MODULE
THERMOSTAT
RESISTOR
CIRCUIT
BOARD
AT
TOP
THREE
CONNECTORS
DANFOSS
ELECTRIC
MODULE
CONNECTS
DIRECTLY
TO
LOAD
DUMP
CIRCUIT
BOARD
+
+
-
-
+
+
F
D
C
T
P
12/24
VDC
Positive
+
12/24
VDC
Negative
-
BLACK
RED
BLUE
12 V LIGHT
WIRING DIAGRAM
Model
TJ18, TJ18S, TJ18P,
TJ22, TJ22P, TJ42, TJ42RE & TJF42
Model
TJ18AC, TJ18SAC, TJ22AC, TJ42AC, TJ42REAC,
TJF42 & TJ80AC
DANFOSS
PASSED
Positive
12 V LIGHT
Model
TJ18F & TJ22F
TJ18F/TJ22F
8
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