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  1. Replies
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    Actually quite the contrary herefishy. I have a...

    Actually quite the contrary herefishy. I have a chain of stores we do that has 3 unitary systems per store. One in the walk in coolet, and 2 systems on the freezer. The freezers are running hot...
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    When it comes to txv ' s not feeding on a rack,...

    When it comes to txv ' s not feeding on a rack, there are four things we check... in this order... liquid level, subcooler operation if present, txv screens (while pumped down we typically change...
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    I think most are 10 degrees.

    I think most are 10 degrees.
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    There are more around than you know TF12.

    There are more around than you know TF12.
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    Subcooling matters. I deal with it every day. ...

    Subcooling matters. I deal with it every day. Every degree below condensing temperature adds a little more capacity to a system. When working with systems that run 50, 100, 150 HP or more, that...
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    512

    Nice one i saw was the 6" pvc under the floor was...

    Nice one i saw was the 6" pvc under the floor was ducted to an air handler that the discharge of one of the compressor ran through to heat the air being blown through the PVC. I believe it was an...
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    MO99 is a decent gas. biggest prob I have seen...

    MO99 is a decent gas. biggest prob I have seen is oil return if you stay with MO. You may have to had a little POE to the system to facilitate proper oil return, specifically on LT racks. 5% is...
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    Depends on the machine. Some use syrup an it...

    Depends on the machine. Some use syrup an it mixes with water as it is pumped to the machine. Some use soda straight from the bottle. If its a manual fill, betcha it's for bottled soda. Read the...
  9. Ahhh. It happens. Sometimes we never know where...

    Ahhh. It happens. Sometimes we never know where or why. Sometimes it evident (such as a new store). It is bad, and a rack is a lot tougher to clean up than a conventional split. But we do it. ...
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    Thx

    Thx
  11. Thread: R-508a

    by CRussell1975
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    321

    Found this... ...

    Found this...

    http://www.friedrichs-kaeltemittel.de/en/products/refrigerants/hfc-refrigerants/r508a/
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    Contactor sizing..

    Always sized a breaker for a comp 25% over and a contactor 25% over that.

    What issues would be seen for a contactor sized close to RLA?

    EG, 116 RLA on a 125 amp contactor?

    ..... oh crap,...
  13. I have a couple markets that are still running...

    I have a couple markets that are still running split conventional and they have no pump down.

    To this day have no idea why it's like that.. i am a pump down fan, but these have worked for years...
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    I've had those rushes where I longed for lights...

    I've had those rushes where I longed for lights and sirens... especially when traffic is backed up and all I can think is "oh crap I've got ice cream melting! Get outta my way!" :cool:

    ..... oh...
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    Market Techs... Why we do what we do.

    Sitting here at a location early on a Sunday morning, it has been a long weekend. The heat has has us quite busy, and I'm running on what naps I have taken while waiting on case pull downs or...
  16. Ohm readings vary. Usually I see 1 to 3 ohms, but...

    Ohm readings vary. Usually I see 1 to 3 ohms, but the key is from leg to leg they should all read the same. Eg L1 To L2 1.6, L1 To L3 1.6 , L2 To L3 1.6. Then check to ground.



    ..... oh...
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    I just changed the same compressor out a few days...

    I just changed the same compressor out a few days ago... same refrigerant... i looked as something wrong :eek:

    ..... oh crap, is it supposed to do that?
  18. Replies
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    877

    Refrigerant? Condenser coil and fan condition?...

    Refrigerant? Condenser coil and fan condition? Ambient temps? Doubt it's weak. Amps are actually a little high for an 06K6E.

    ..... oh crap, is it supposed to do that?
  19. Replies
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    I was actually thinking about this as I was...

    I was actually thinking about this as I was reading through the thread. So many times someone just throws a blade in and and doesn't think if it is too far forward or backwards. Or one too small...
  20. If you put all of this together (no cost limit as...

    If you put all of this together (no cost limit as such for now), why not a, say 4 ton belt drive on a variable speed DC motor. The constant torque of the DC motor would pretty much eliminate the low...
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    Did you factor in your manifold hoses when...

    Did you factor in your manifold hoses when weighing in? That would explain the 6 oz over.. it may still need an oz.

    No consideration of subcooler in refrigeration? Sub cooling is a big factor. ...
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    As of today... still there! Emailed it to my...

    As of today... still there!

    Emailed it to my local Account Mgr... he is gonna love that.
  23. Replies
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    This one brings back memories. I worked on a...

    This one brings back memories. I worked on a refrigeration system for a 1000 lb CO2 storage tank many years ago. Valve plates bad in the compressor. Like crazycajun, this one ran off a tank...
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    I think the managers I laugh at the most... and...

    I think the managers I laugh at the most... and can be the most frustrating are the ones that "could do your job if they had the tools". I asked one why he was a grocery manager then. He didn't...
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    I use low loss on everything except evacuation...

    I use low loss on everything except evacuation and when charging racks. Refrigerant loss comes from the hoses, depending on the length of the hose it can have several ounces of refrigerant in them...
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