Originally Posted by Teamfour
That depends on the orientation of the fridge. Out fridge is across the back wall or a rear kitchen.
You are 100% correct.
It MUST be level across the back of the fridge to avoid permanent damage.
It SHOULD be level front to back to keep stuff from falling out when you open the door.
Which direction is CRITICAL (front to back or left to right) is totally dependent on orientation in the kitchen.
In your case, BACK WALL, the critical levelness is left to right.
In my case, a sidewall mount, the critical level is front to back.
Just picture the coils to see why ammonia pooling in the tubes, and not returning quickly to refill the boiler, would result in a low ammonia condition in the boiler and subsequent overheating and failure.