Schreiber Chillers Excellon 150AC - Manual (Page 30)

Excellon 235785-01/02
TROUBLE SHOOTING - PART II
REFRIGERATION SYSTEM INTERNAL PRESSURE USING REFRIGERANT R-22
* High Pressure Switch : Manual Reset - Cut out at 425 P.S.I.
* Low Pressure Switch : Automatic Reset - Cut out at 25 P.S.I.
WORKING REFRIGERANT PRESSURES R-22
* High Pressure : 185 to 325 P.S.I.
* Low Pressure : 45 to 70 P.S.I.
***NOTE***
These pressures are under normal ambient temperatures and chilled water
temperatures.
25