The refrigeration system compressor is short cycling on high head pressure. When checked, the sea water cooling inlet temperature to the water-cooled condenser is 72°F. In this situation, what should you do?
• Head pressure in a refrigeration system and what typically causes it to be high • Effect of cooling water flow and temperature on a water-cooled condenser • Difference between non‑condensable gases problems vs. insufficient cooling
• If the seawater inlet temperature is only 72°F, is that temperature by itself likely to cause high head pressure, or does it suggest looking at something else in the condenser circuit? • Which fault would show up first: a flow restriction on the cooling water side, or a problem that would require purging the entire high side of the system? • Which options are routine checks/adjustments and which are extreme corrective actions that you would usually do only after simpler causes are ruled out?
• Verify whether seawater temperature of 72°F is actually high, normal, or low for condenser operation • Check whether flow rate through the condenser has been confirmed adequate before considering gas purging or valve resetting • Consider that purging the complete high‑pressure side is a drastic step usually reserved for severe contamination, not a first troubleshooting move
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