American Power Conversion DX Benutzerhandbuch



Measure the refrigerant pressures.



Check the operation of the thermal expansion valve. Verify superheat and sub-cooling of the System in 

full cool mode:

 •  Superheat ________________

 •  Sub-cooling ______________



Check the operation of the head pressure switch:

 •  Cut-out PSI (kPa)_____________



Verify the operation of the water/glycol regulating valves.



Check the operation of the smoke, fire, and water detected alarms (if applicable).



Confirm the operation of the fluid cooler or air cooled condenser and the flooded head pressure controls, if 

used.



Confirm the operation of the Redundant Group and change over capabilities.

Compressor on

Compressors on