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  1. #14
    Join Date
    Apr 2010
    Location
    San Diego, CA
    Posts
    226
    Quote Originally Posted by icemeister View Post
    While that would be considered a receiver...technically, it's not exactly the type we were referring to.

    Perhaps jimp is just having a bit of fun.
    Exactly.

  2. #15
    Join Date
    Nov 2006
    Location
    Westmont IL
    Posts
    99
    Thanks for the info guys. This has already been hacked together and getting it working was most important. Just putting off the replacement for a bit.

  3. #16
    Join Date
    Apr 2003
    Location
    Maple Grove, MN
    Posts
    1,338
    You could always completely fill up the receiver and make it act like a critically charged system again, or probably better yet, just remove the receiver.

  4. #17
    Join Date
    Feb 2005
    Location
    Tampa Florida
    Posts
    776
    One of the machines is a Virtis Ultra LE 25, has daul compressors with receivers and caps.

  5. #18
    Join Date
    Feb 2009
    Posts
    134
    Filling the reciever will make for interesting start up. Remove reciever and install cap tube drier or some other access for highside. In the 80's I serviced an ice bank bulk tank with captubes and recievers. The recievers were due to length of evap. tubes. Thus large volume of refrigerant required to flood

  6. #19
    Join Date
    Apr 2010
    Location
    San Diego, CA
    Posts
    226
    Quote Originally Posted by jimp View Post
    One of the machines is a Virtis Ultra LE 25, has daul compressors with receivers and caps.
    Cooling multiple loops (shelf/condenser/neg. shelf) at different times during the run, sometimes more than one loop. Varying loads - a small receiver helps reduce the time spent pushing vapor through the cap tubes... This is what I've always assumed.

    Of course, anyone doing Ultra Low temp long enough knows that some of the normal rules get ignored.

  7. #20
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,427
    Quote Originally Posted by ammoniadog View Post
    You could always completely fill up the receiver and make it act like a critically charged system again, or probably better yet, just remove the receiver.
    Quote Originally Posted by ETC1 View Post
    Filling the receiver will make for interesting start up.
    Since the refrigerant in a cap tube system will tend to migrate to the coldest spot...,ie the evaporator...adding a receiver full of liquid to the mix can cause some very severe floodback on startup.

    Most of the units where I've found them receivers installed with cap tubes had 1-2 year old compressors with bad valves. I'm surprised those little guys lasted as long as they did.

  8. #21
    Join Date
    Feb 2005
    Location
    Tampa Florida
    Posts
    776
    The shelf compressor only cools the shelf, it has two caps. One cap is for cooling, one is for when the recipe calls for no cooling. The condenser compressor cools the condenser of course, unless the switch is off. If the shelf is on and the condenser switch is off the condenser compressor still runs and supports the shelf cooling.

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