Operating Instructions - Dometic RM2652 Installation And Operating Instructions Manual

Refrigerator for lp-gas and electric operation
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D
H
Refrigerator
Dimensions
Model
Height
A
inch
54-21/32
RM2652
mm
1388
inch
60-51/64
RM2852
mm
1544
This method of installation and these clearances will give you adequate space for service and proper installation.
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.
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 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).
8
Side view
Overall
Width
Depth
Height
B
C
H
24-7/8
26-1/32
53-3/4
632
661
1365
24-7/8
26-1/32
59-15/16 23-11/16
632
661
1522
A
W
FIG. 11
Recess
Dimensions
Width
Depth
W
D
23-11/16
24
602
610
24
602
610
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 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 tem-
perature is controlled by a factory preset temperature
setting.
The refrigerator controls will work down to 9.6 volt DC.
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.
View from above
D
! WARNING
C
B

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Rm2852

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