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Thread: Hot gas defrost - What pressure?
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31-05-2009, 03:56 PM #10
Re: Hot gas defrost - What pressure?
Important factor of BPR setting is temperature of surrounding air, because we have to defrost the tubes and the fins. Colder surrounding require additional heat to defrost the fins. So BPR setting should be 4-4.5bars for coolers, 5-5.5bars for regular freezer(like yours) and 5.5-6bars for extremely cold freezers. Hot gas supply should be adjusted accordingly.
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