mastercheif602
02-08-2009, 11:21 PM
Came across an open top meat bin. It has two doors as a pass through. The unit was not working. Found it was off on head pressure switch. Rest, head pressure was very high. Clean The condenser and the watched it run.
The unit has a pressure switch to control the box temp.
It is medium temp and I set it to cut in at 62psi and out at 40 psi. The unit is a r22.
Did my split on the condeser and got a 21 degree split on that.
What is troubling to me is
my super heat was at 19degrees and my sub cooling was at 2 degrees F.
I waited a few to let box cool down then checked it again once it got closer to temp
Super heat was at 10 degrees f, and the sub cooling was at 21 degrees.
Is this unit over charged. The ambient air is like 75 degrees.
The unit has a pressure switch to control the box temp.
It is medium temp and I set it to cut in at 62psi and out at 40 psi. The unit is a r22.
Did my split on the condeser and got a 21 degree split on that.
What is troubling to me is
my super heat was at 19degrees and my sub cooling was at 2 degrees F.
I waited a few to let box cool down then checked it again once it got closer to temp
Super heat was at 10 degrees f, and the sub cooling was at 21 degrees.
Is this unit over charged. The ambient air is like 75 degrees.