PS 112713
Page 32 | 1-800-343-9463
Measure Superheat
If superheat is high and bubbles are present, add more refrigerant until it is clear. If superheat is low (around 4-6
degrees Fahrenheit) and bubbles are present in the sight glass, check for liquid refrigerant entering the compressor
as evidenced by cool crankcase below 100- 110 degrees Fahrenheit and low discharge superheat. Adjust TXV setting
in small increments to increase superheat and stop liquid from going to the compressor. Check this before adding
more refrigerant. If the temperature of the air entering the condenser is cold enough to cause the condenser fan to
cycle, block about 60% of the coil to raise the head pressure and allow time for stabilization. Reduce blockage if the
condensing temp is above 115 degrees Fahrenheit. Retain blockage if necessary to maintain stability for performance
test listed in the Split System Warranty Checklist. If the air is cold, below 60 degrees Fahrenheit entering the condenser
and the sight glass is clear; allow the system to run for a while until the cellar cools o, then measure and record data
on the Split System Warranty Checklist.
INSTALLING THE CONDENSING UNIT (continued)
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