Dometic DM3862 User Manual

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®

RM2351 RM2554 DM2862 RM2354 DM2652 DM3862 RM2451 DM2662 NDM1062 RM2454 DM2663 NDR1292 RM2551 DM2852

FOR YOUR SAFETY

If you smell gas:

1.Open windows.

2.Don’t 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.

user manual

Refrigerator for LP-gas & electric operation

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 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

Corporate Office

CANADA

Service Office

2320 Industrial Parkway Elkhart, IN 46515

Dometic Corporation

Dometic Corporation

 

48 Zatonski, Unit 3

2320 Industrial Pkwy.

For Service Center Assistance

Brantford, ON N3T 5L8

Elkhart, IN 46516

CANADA

Phone: 574-294-2511

Call: 800-544-4881

Phone: 519-720-9578

 

 

 

825125704

 

MO-M 0742

(French 825125754)

 

 

©2006-2007 Dometic Corporation

LaGrange, IN 46761

introduction

Thank you for entrusting us to supply your new quality-guaranteed refrigerator which is to be used as a recreational device designed for storage of foods, frozen foods and making ice. Please, when the refrigerator is not in use as a recreational device, turn the system off and open the door(s).

In this user manual you will find information about how to operate and care for: RM2351, RM2354, RM2451, RM2454, RM2551, RM2554, DM2652, DM2652 (with optional fan), DM2662, DM2663, DM2852, DM2852 (with optional fan), DM2862, DM2862 (with optional fan), DM3862, NDM1062 and NDR1292. The manual should be kept and stay with the refrigerator if it is ever moved or change owners. Read it carefully to ensure that you know how to operate the refrigerator safely and correctly. Be aware of possible safety hazards when seeing alert symbols on the refrigerator as well as in this manual.

Plese note that installation and service should be performed by qualified personnel only. For installation instructions, refer to the

Installation manual.

contents

refrigerator overview. . . . . . . . . . . . . . . . . . . . . .4 operating instructions.. . . . . . . . . . . . . . . . . . . . .8 Storage compartments.. . . . . . . . . . . . . . . . . . . . .9 product care. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 maintenance & service. . . . . . . . . . . . . . . . . . . . . .13

troubleshooting .. . . . . . . . . . . . . . . . . . . . . . . . . .15 appendix a - spare parts. . . . . . . . . . . . . . . . . . . .16 appendix B - consumer support . . . . . . . . . . . . .18

appendix C - Dometic warranty & maintenance schedule. . . . . . . . . . . . . . . . . . . . . .19

Symbols

The following symbols are used throughout the manual:

!

WARNING

Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury.

! CAUTION

CAUTION

Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury.

Used without the safety alert symbol indicates, a potentially hazardous situation which, if not avoided may result in property damage.

Information

Step-by-step instructions

- -

refrigerator overview

Absorption cooling system

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.

Sodium chromate is used for corrosion protection (less than 2 weight % of the coolant).

Leveling the refrigerator

Leveling is one of the requirements for proper operation with absorption refrigerators. to ensure proper leveling the vehicle needs to be leveled only so it is comfortable to live in (no noticeable sloping of floor or walls).

Any time the vehicle is parked for several hours with the refrigerator operating, the vehicle should be leveled to prevent this loss of cooling.

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.

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.

automatic energy selector system

The refrigerator is equipped with an automatic energy selector system. The user turns the refrigerator on and then, the refrigerator automatically selects the most suitable energy source available, either 120 VAC or LP gas operation. The system can be set by the user to be fully automatic (AUTO mode is selected) or to operate on LP gas only (AUTO mode is off).

On 3-way models, the control system can manually be set to DC mode (DC operation). The DC mode overrides all other operating modes.

The refrigerator controls will work down to 9.6 V DC.

Modes of operation

AUTO mode - AES/AUTO mode

When operating inAUTO - AES/AUTO mode, theAUTO - AES/AUTO mode indicator lamp is illuminated. The control system will automatically select between AC and GAS operation. AC has priority over GAS. Should AC become unavailable, the system automatically switches to GAS. As soon as AC becomes available again, the control will switch back to AC regardless of the status of the GAS operation.

If the CHECK indicator lamp is illuminated the controls have failed to ignite the burner in the GAS mode. To restart an ignition attempt with the CHECK lamp illuminated (or to turn off the CHECK lamp), press the ON/OFF button OFF and back ON again. The control system activates the ignition system and makes three attempts to light the burner for a period of approx.

45 sec. at two minutes interval. Should 120 VAC become available while the CHECK indicator lamp is on, the CHECK lamp will not turn off until the ON/OFF button is pressed OFF and then ON again.

GAS mode

The GAS mode indictor lamp is illuminated. This mode provides LP gas only. The control system activates the ignition system and attempts to light the burner for a period of approx.

45 sec. at two minutes interval. If unsuccessful, the CHECK indicator lamp will illuminate.

To restart GAS operation, press the ON/OFF button to OFF and then back ON. The control system attempts a new ignition sequence.

Purging air from the lines

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, turn the refrigerator off and on by pressing the ON/OFF button. If the flame is not lit within 45 seconds, turn the refrigerator off and back on again. This procedure can be repeated 3 to 4 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 that all manual shutoff valves in the lines are open.

!

WARNING

FIRE OR EXPLOSION HAZARD. When refueling or parked near gasoline pumps, shut off all LP gas appliances. Failure to heed this warning could cause a fire or explosion resulting in death or severe personal injury.

--

refrigerator overview

DC mode

RM2354, RM2454, RM2554 & DM2663

When operating in DC mode (3-way models only), the DC mode indicator lamp is illuminated and all other lamps are off.

To select another operating mode, turn off the DC mode by pressing the DC selector button. The DC lamp is turned off.

When there is no charging of the house battery, switch to

AUTO mode or GAS mode since running the refrigerator on 12 V DC will quickly drain the battery.

Limp mode of operation

In the event of a failure of a major operating component, the control system will continue to operate the cooling system.

RM2351, RM2451, RM2551, DM2652 & DM2852

If the control can not read the temperature sensor and control the preset temperature, 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 reset.

RM2354, RM2454, RM2554, DM2662, DM2663, DM2862, DM3862, NDM1062 & NDR1292

Two modes of operation can occur:

1)The first limp mode of operation will execute if the display module becomes non functional. The control system reverts to full automatic operation selecting the best energy source available with AC, DC (3-way only) and GAS priority. The temperature setting is maintained at the mid position. The power module will continually attempt to reestablish operation of the display module.

2)The second limp mode of operation will execute when a failure of the temperature sensing device or associated

electronic circuitry occurs. If this should happen, the control system operates on the energy source selected via the control panel. The cooling unit runs continuously on the selected energy source. The refrigerator continues to operate in this mode indefinitely or until a new sensor is installed and the system is reset.

Climate control system

DM2652, DM2662, DM2663, DM2852, DM2862, DM3862, NDM1062 & NDR1292

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 is not air conditioned during these months. The refrigerator comes standard with a 12 V DC climate control that will evaporate the water droplets when they form. The climate control can be left on continuously or used only when temperatures require it. Note that when turned on, the climate control will draw 12 V DC power continuously.

Turn it off when a charging source is not available.

Low ambient control

DM3862, NDM1062 & NDR1292

The refrigerator is equipped with an exclusive feature that allows for trouble-free operation in low ambient temperature

(like below 50°F) for extended periods of time. Once the outdoor temperature is above 50°F, the low ambient switch should be turned off.

Thermostat

RM2354, DM266, DM2663, DM2862, DM3862, NDM1062 & NDR1292

The thermostat 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 adjusted to the desired temperature setting.

--

Dometic DM3862 User Manual

refrigerator overview

Control panel

RM2351, RM2451, RM2551, DM2652 & DM2852

 

A

 

B

ON

AUTO

2

CHECK

1

 

AUTOMATIC REFRIGERATOR TEMPERATURE CONTROL

OFF

 

GAS

 

1.ON/OFF button (main power)

2.AUTO/GAS mode selector button

A.AUTO mode indicator lamp

B.CHECK indicator lamp

(GAS mode only)

RM2354, RM2454, RM2554 & DM2663

A

D

 

E

ON

DC

AUTO

COLD 1 2 3 4 5 COLDEST

1

2

3

4

OFF

AC

GAS

CHECK

B

C

 

F

1.ON/OFF button (main power)

2.DC mode selector button

3.AUTO/GAS mode selector button

4.Temperature selector button

A.DC mode indicator lamp

B.AC mode indicator lamp

C.GAS mode indicator lamp

D.AUTO mode indicator lamp

E.CHECK indicator lamp

(GAS mode only)

F.Temperature indicator lamps

DM2662, DM2862 & NDM1062

A D

ON

 

AUTO

COLD 1 2 3 4 5 COLDEST

1

 

2

3

OFF

AC

GAS

CHECK

B

 

C

E

1.ON/OFF button (main power)

2.AUTO/GAS mode selector button

3.Temperature selector button

A.AUTO mode indicator lamp

B.AC mode indicator lamp

C.GAS mode indicator lamp

D.CHECK indicator lamp

E.Temperature indicator lamps

--

refrigerator overview

DM3862, NDM1062 & NDR1292

 

B

D

 

 

ON

AES

COLD 1 2 3 4 5 COLDEST

CLC

LAC

AUTO

1

2

3

4

5

OFF AC

GAS

CHECK

 

 

A

C

E

F

G

1.ON/OFF button (main power)

2.AES/AUTO/GAS mode selector button

3.Temperature selector button

4.Climate control button

5.Low ambient control 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

F.Climate control indicator lamp

G.Low ambient control indicator lamp

NDR1292

 

 

B

D

ON

 

AES

COLD 1 2 3 4 5 COLDEST

 

AUTO

1

 

2

3

OFF

AC

GAS

CHECK

A C

E

1.ON/OFF button (main power)

2.AES/AUTO/GAS mode selector button

3.Temperature selector button

A.AC mode indicator lamp

B.AES/GAS mode indicator lamp

C.GAS mode indicator lamp

D.CHECK indicator lamp

E.Temperature indicator lamps

- -

operating instructions

Startup

!

WARNING

FIRE HAZARD. Before lighting the gas burner, after that the RV has not been used for some time, please check that the gas path between the burner jet and the burner tube has not been obstructed. Failure to heed this warning could cause a fire resulting in personal injury.

SOLENOID VALVE

BURNER MOUNTING

SCREWS

INLET FITTING

BURNER JET

MANUAL SHUT OFF VALVE

BURNER TUBE .

(Shown in open position)

PRESSURE TEST PORT

SPARK ELECTRODE

Before starting the refrigerator:

Check that all the manual gas valves are in the ON position.

Make sure that a continuous 12V DC supply is available for the electronic control to function.

To start the refrigerator:

1. Press the ON/OFF button.

2. Select operation mode:

AUTO - AES/AUTO mode

AC and GAS.

Press the AUTO/GAS - AES/AUTO/GAS mode selector button (if not already on). The illuminated lamp indicates the selected mode.

(If the CHECK indicator lamp is illuminated, see refrigerator overview > Modes of operation > AUTO mode - AES/AUTO mode for further information.)

GAS mode

GAS operation only.

Press the AUTO/GAS - AES/AUTO/GAS mode selector button to turn off the AUTO mode (if not already off).

(Within 45 seconds the burner should be ignited and operating normally. If not, see Refrigerator overview > modes of operation > gas mode for further information.)

DC mode (3-way models only)

Press the DC mode indicator button. The DC lamp will be turned on. To select AUTO or GAS mode, turn off the DC mode by pressing the DC mode selector button. The DC lamp will then be turned off.

. If necessary, adjust the thermostat by pressing the Temperature selector button.

(RM2351, RM2451, RM2551, DM2652 & DM2852: The temperature is controlled by a factory

preset temperature setting.)

-

Turning on the climate control

DM2652, dm2662, dm2663, dm2852, dm2862, NDM1062 & NDR1292

Turn the Climate control switch to I (ON).

The Climate control switch is located beneath the top decoration panel that houses the control panel.

DM3862, NDM1062 & NDR1292

Press the CLC button. The indicator lamp will illuminate.

ON

 

AES

COLD 1 2 3 4 5 COLDEST

CLC

LAC

 

AUTO

OFF

AC

GAS

CHECK

 

 

Turning on the low ambient control

NDM1062 & NDR1292

Turn the Low ambient control switch to I (ON).

The Low ambient control switch is located beneath the top decoration panel that houses the control panel.

DM3862, NDM1062 & NDR1292

Press the LAC button. The indicator lamp will illuminate.

ON

 

AES

COLD 1 2 3 4 5 COLDEST

CLC

LAC

 

AUTO

OFF

AC

GAS

CHECK

 

 

turning 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 OFF position. This shuts off all DC power to the refrigerator, including the interior light.

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.

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