Operating instructions

5. Check the unit subcooling value by reading the liquid line pressure and temperature at the liquid
line near the filter-drier. The subcooling values should be between 15 and 20 degrees F (8.3 and
11.1 degrees C).
6. With outdoor temperatures above 60°F (15.6°C) all condenser fans should be operating and the
liquid line temperature should be within 5°F-10°F (2.8°C-5.6°C) of the outdoor air temperature.
At 25-50% load the liquid line temperature should be within 5°F (2.8°C) of outdoor air
temperature with all fans on. At 75-100% load the liquid line temperature should be within 10°F
(5.6°C) of outdoor air temperature with all fans on.
7. Overcharging of refrigerant will raise the compressor discharge pressure due to filling of the
condenser tubes with excess refrigerant.
Warranty Statement
Limited Warranty
Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find
your local McQuay Representative, go to www.mcquay.com.
68 ACZ / AGZ-BM IMM ACZ/AGZ-4