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Thread: coffin freezer

  1. #1
    Join Date
    Mar 2003
    Posts
    373

    Question

    why do these units continue to run the evap fans during defrost whereas walk in freezer turn them off, makes more sense to not blow the heat around,????
    any thoughts
    hem

  2. #2
    Join Date
    Feb 2003
    Posts
    1,166
    [QUOTE]Originally posted by hem057
    [B]why do these units continue to run the evap fans during defrost whereas walk in freezer turn them off, makes more sense to not blow the heat around,????
    any thoughts

    These units (coffin frrezers) continue to run the fans in order to distribute some defrost heat to the air passages, they have to operate under extreme conditions with wide td between discharge air temp and ambient temp and require the fan assisted defrost.

    Watts New, Ohm My, I been Electrically Commutated. Are U2.

  3. #3
    Join Date
    Jan 2004
    Location
    Earth
    Posts
    4,879
    Good answer mc, and don't forget heat rises.
    A Diamond is just a piece of coal, that made good under pressure!

  4. #4
    Join Date
    Jan 2002
    Posts
    1,895
    Have rewired a couple that someone thought the fans should have been off during defrost. Terminator/overtemp limit shut off defrost before coil was cleared of ice and bottom layer of product was getting partially thawed during each defrost.

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