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29-07-2007, 04:59 PM #21
Re: walk in cooler evaperator keeps freezing up
suction pressure will varies to the ambient temperature ie. day time -night time try to increase the suction pressure high enough so that you will not reach 30 deg suction press. with R22 @ 40 will strat frosting
50 at day time may swing to a lower value during night time.
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