Schreiber Chillers Excellon MM30AC User Manual
Page 18
TROUBLE SHOOTING - PART II
REFRIGERATION SYSTEM INTERNAL PRESSURE USING REFRIGERANT R-
134A
* 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-134A
* 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.
17
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