Absorption frides use ONE cooling unit with TWO evap coils
Low temp Evap is for freezer
High temp Evap is for food compartment
Freezer is FIRST to get cooling effect.
The Cold ammonia vapor absorbs the heat.......freezer being first it gets the most heat absorbed so very little heat absorption is left for food compartment UNTIL freezer gets below 10*F THEN food compartment can begin getting colder cause the cold ammonia vapor has heat absorption capability.
Colder freezer gets the more heat can be absorbed in food compartment.
12 hrs for adequate cooling effect
RV level?
Critical for proper gravity flow of liquid ammonia thru absorber tubes back to boiler
And the inside of RV remaining HOT is a hindrance....especially if one keeps opening fridge doors..cold out HOT AIR IN