R-Pro › Field cases › Chillers
High Pressure Rise from Insufficient Cooling Water Flow (Water-Cooled)
Likely causes
Cooling water pump faulty or undersized
Check: Measure cooling water inlet-outlet temperature difference (normal 5–8°C; high = insufficient flow)
What to do: Measure cooling water inlet-outlet temperature difference (normal 5–8°C; high = insufficient flow) → Measure pump running current and discharge pressure → Check valve opening → Inspect cooling tower fan and fill media → Check chemical cleaning cycle (typically once a year)
Flow path narrowed by scale/slime in cooling water piping
Check: Measure pump running current and discharge pressure
What to do: Measure pump running current and discharge pressure → Check valve opening → Inspect cooling tower fan and fill media → Check chemical cleaning cycle (typically once a year)
Cooling water valve not fully open or excessive pressure drop
Check: Check valve opening
What to do: Check valve opening → Inspect cooling tower fan and fill media → Check chemical cleaning cycle (typically once a year)
Cooling tower degradation raising cooling water temperature
Check: Inspect cooling tower fan and fill media
What to do: Inspect cooling tower fan and fill media → Check chemical cleaning cycle (typically once a year)
Insufficient cooling water flow is raising condensing temperature. Check pump, piping, and valves. Condensing performance drops sharply when cooling water temperature exceeds 32°C. Improve cooling tower maintenance.
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
Open R-Pro →Related cases
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- Air-Cooled Chiller High-Temperature Trip (Ambient >45°C)