Pfannenberg PC2500 WT CE STD, Operating And Maintenance Instructions Manual

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English
70040-122_01-_-(PC2500_Op._Manual_IT-EN-DE-FR-ES-RU).docx 16
Note: after solving the cause of the fault, start the chiller by pressing the reset
button located on the external body of the pressure switch itself (see the
picture)
Compressor
Problem Cause Possible corrective Action
The compressor works continuously and the chiller can’t control the liquid temperature:
- too low temperature of the liquid
- too high temperature of the liquid
Too low temperature Broken thermostat (contact blocked) Replace the thermostat
Too high temperature Broken thermostat Replace the thermostat
Not enough Freon in the unit Please ask for the service by a refrigeration engineer
Too high heat load Possible wrong application, to be checked with our staff
Pump
Problem Cause Possible corrective Action
No flow rate in the circuit Pump is down Replace the pump
Not correct flow rate on hydraulic
circuit Verify the regulation of hydraulic bypass where installed
Verify circuit pressure drop to reach the nominal flow rate