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[A/S] Re: Leveling



I just installed a new Dometic LP Gas-Electric Refrigerator in my 
Overlander. With regard to leveling the following is copied exactly 
from the Installation and operating instructions.
**
"Leveling
In an absorption refrigerator system, ammonia is liquified 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 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.
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 as it is comfortable to live 
in (no noticeable sloping of floors or walls).
When the vehicle is moving the level is not critical, as the rolling 
and pitching movement of the vehicle will pass to either side of 
level - keeping the liquid from accumulating in the evaporator 
tubing."
**
Nowhere in this does it say it has to be level within 1/2 bubble or 
anything to that effect.
It also doesn't say not to run the gas section while driving,
quite the contrary.
It doesn't say anything about the flame not going up the center
of the boiler.
It only talks about a loss of cooling.
And it didn't say "THIS SIDE UP" on the outside of the crate.
Phil Piper