409. The compressor used in a water-cooled air conditioning system is short-cycling and as a consequence a safety shutdown alarm occurs at each shutdown, and a manual reset is required to restart. A service check determines that the suction pressure remains above the normal cut-in point during cycling and that the discharge pressure rapidly builds up to the cut-out point while running and gradually falls to the cut-in point during the off cycle. What is likely the cause?

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reduction in condenser water flow (scaled condenser)

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