Dometic RM4223 User Manual download pdf (Page 7)

13. INSTALLATION OF DECORATIVE

DOOR PANEL

The door panel can easily be mounted. The dimensions

of the panel must be:

Height 19-3/4"

Width 17-27/32"

Thickness Up to 1/8"

Weight 49 lbs.

A. Remove the door. See Section 12.

B. Remove the lower trim molding. (NOTE: Trim molding

is not installed on new units in cartons)

C. Fit the new panel in place and slide it up as far as

possible.

D. Fit the trim molding back in place.

SECTION B. CERTIFIED VENT SYSTEMS

VENT KIT OPTIONS COMPONENTS PART NO.

DUAL METAL SIDE * RM 183 Upper Metal Side Vent 8030211.332

VENTS * RM 183 Upper Metal Side Vent 8030211.332

** Power Ventilator Optional 3108705.751

DUAL PLASTIC SIDE * Upper Plastic Side Vent 3107560.041

VENTS * Lower Plastic Side Vent 3107560.009

** Power Ventilator Optional 3108705.751

* Vent System Requires One Each.

** Alternative instructions forwarded with ventilator kit. Used in conjunction with

upper and lower side vents at minimum vent heights for optimum performance.

SECTION C. OPERATING INSTRUCTIONS

1. IMPORTANCE OF LEVELING A

REFRIGERATOR

In an absorption refrigerator system, ammonia is lique-

fied in the finned condenser coil at the top of the refrige-

rator. The liquid ammonia then flows into the evaporator

(inside the freezer section) and is exposed to a circula-

ting 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 slo-

ped to provide a continuous movement of liquid ammo-

nia 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 cir-

culation of hydrogen and ammonia gas, or in severe

cases, completely block it, resulting in a loss of cooling.

Remember to level the vehicle when stopping for more

than an hour, otherwise the cooling unit could be perma-

nently damaged due to overheating if it is left "ON".

When the vehicle is moving, the leveling is not critical as

the rolling and pitching motion of the vehicle will pass to

either side of level, keeping the liquid ammonia from

accumulating in the evaporator tubing.

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Dometic RM4223 User Manual Page 7

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