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  1. #1
    Join Date
    Feb 2005
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    284
    got a 5hp r22 walk in cooler,1 condenser fan motor,what do you guys think about adding a p70aa-118 fan cycle in with a headmaster? boss likes p70s due to some pressure problems in winter time,i called distributor,they said no to fan cycle since it could fight against headmaster. this is a brand new bohn condenser by the way.

  2. #2
    On a dual condenser motor set-up Bohn does do that,with a klixon or a fan cycle control. But the OROA-5 on your unit with the proper added charge will sufice IMHO.
    FEN

  3. #3
    Join Date
    Jan 2006
    Location
    DFW Metroplex
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    4,910
    Why do you want to add fan cycling - is the unit giving you trouble?

    Headmaster should be sufficient although you will need to make sure the system is adequately charged.

  4. #4
    Join Date
    Jan 2006
    Location
    Near Atlanta, GA.
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    14,587
    Headmasters and fan cycles can conflict if their pressure settings are close, gennerally reccomend using one or the other. What type of compressor? If it's an air cooled semi-hermetic it has to have continuous air flow across it so in that case fan cycles are not reccomended.

    Properly installed and set up, a headmaster should work fine.

  5. #5
    Join Date
    Aug 2006
    Location
    st.petersburg,fl
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    805
    And here I thought you guys work on Manitowocs. They use both.

  6. #6
    Join Date
    Jan 2006
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    Near Atlanta, GA.
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    14,587
    Originally posted by skpkey9
    And here I thought you guys work on Manitowocs. They use both.
    That's true but the fan cycle setting is lower than the headmaster and it's only function is to shut the cond fan off during harvest.

  7. #7
    Join Date
    Sep 2002
    Posts
    2,840
    Over the years i have seen units with one cond fan headmaster and fan cycle and it was installed at factory.I think its done to prevent comp short cycling in cold weather in units with long piping runs untill gas gets going

  8. #8
    Join Date
    Jan 2006
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    DFW Metroplex
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    OK - I'll admit it's been quite a while since pulling the front panel on an ice maker, but do they really have a headmaster? I've seen remote condensers with headmasters - can't remember seeing one on self contained machine.

  9. #9
    Join Date
    Aug 2006
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    st.petersburg,fl
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    805
    I gotta give someone a hard time had a hell of a week cleaning up after idiots that call themselves techs.

  10. #10
    Join Date
    Jan 2006
    Location
    Near Atlanta, GA.
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    14,587
    Originally posted by markettech
    OK - I'll admit it's been quite a while since pulling the front panel on an ice maker, but do they really have a headmaster? I've seen remote condensers with headmasters - can't remember seeing one on self contained machine.
    Just remotes. Some self contained machines have fan cycles or temp controlled fans.

  11. #11
    Join Date
    Feb 2005
    Posts
    284
    no problem yet,but have had trouble in the past in cooler weather on new installs,may have been undercharged from jump street,i wasn't involved but other tech was (the boss),and fan cycle seemed to cure those 2 condensers,althought those 2 had 2 fans in the condenser,unlike the one i just installed now.the compressor is a tin can copeland crn0500 i think? bohn says if 1 fan,no fan cycle,2 fans, okay on 1 of them

  12. #12
    Join Date
    Jan 2006
    Location
    DFW Metroplex
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    Originally posted by k_fridge
    Originally posted by markettech
    OK - I'll admit it's been quite a while since pulling the front panel on an ice maker, but do they really have a headmaster? I've seen remote condensers with headmasters - can't remember seeing one on self contained machine.
    Just remotes. Some self contained machines have fan cycles or temp controlled fans.
    Good - that's what I thought. Afraid I was losing my mind for a minute.

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