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8

OPERATING

INSTRUCTIONS

IMPORTANCE OF LEVELING A

REFRIGERATOR

In an absorption refrigerator system, ammonia is lique-

fied 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.

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 ve-

hicle is not moving, liquid ammonia will accumulate in

sections of the evaporator tubing. This will slow the cir-

culation  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 avail-

able, either 120 Volt AC, or LP gas operation. The sys-

tem 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.

FIG. 11

Side view

View from above

C

D

W

B

A

D

H

Most LP gas appliances used in recreational ve-

hicles are vented to the outside of the vehicle.

When parked close to a gasoline pump, it is pos-

sible 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 out-

side.

! WARNING

Overall

Recess

Refrigerator

Dimensions

Dimensions

Model

Height

Width

Depth

Height

Width

Depth

A

B

C

H

W

D

inch 59-31/32

37-1/2

27-1/2

59-1/16

36-1/2

24

NDR 1492-S

NDR 1492-B

mm

1523

952

698

1500

927

610

This method of installation and these clearances will give you adequate space for service and proper installation.

Summary of Contents for NDR1492-B

Page 1: ...stance or additional information consult a qualified installer service agency or the gas supplier AVIS Cet appareil doit tre r par seulement par un r parateur autoris Modification de l appareil pourra...

Page 2: ......

Page 3: ...or 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...

Page 4: ...led and used without modification An opening toward the outside at floor level in the refrigera tor compartment must be provided for ventilation of heavier than air fuel gases The lower vent of the re...

Page 5: ...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 ap plied to the rear surface o...

Page 6: ...as safety shutoff must be tested after the re frigerator is connected to LP gas supply To test the gas safety shutoff proceed as follows 1 Start the refrigerator according to the instructions and swit...

Page 7: ...r 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 C...

Page 8: ...f 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 ar...

Page 9: ...as 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 operati...

Page 10: ...imes 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 n...

Page 11: ...he ice is formed Food in the fresh food compartment may be frozen if the setting is left on COLDEST posi tion DEFROSTING Shut off the refrigerator by pressing the main power ON OFF button to the UP OF...

Page 12: ...ar 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...

Page 13: ...ea 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 shal...

Page 14: ...e not responsible for any failures caused by improper adjust ments and unfavorable installation conditions Contact service point or distributor service dept for assistance Replacement Parts Suppliers...

Page 15: ...e 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 she...

Page 16: ...16 MO FO 0222...

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