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  • A.Mortezania's Avatar
    19-02-2018, 07:06 PM
    A.Mortezania started a thread Piping in Fundamentals
    Dear Friends, At photo below, Sporlan says when system has capacity control and if at this system capacity could decrease below 33%, Proper...
    4 replies | 90 view(s)
  • Superfridge's Avatar
    19-02-2018, 09:10 AM
    Hi all, Can high pumped liquid pressure have a detrimental effect on coil performance and if so how? At what differental pressure is pumped...
    3 replies | 144 view(s)
  • TOM_refcom's Avatar
    19-02-2018, 03:27 PM
    Hi has anyone encountered the Comp Power Reduction alarm on a liebert HPM unit this alarm is only a warning that the compressor power has been...
    1 replies | 73 view(s)
  • Segei's Avatar
    20-02-2018, 04:26 AM
    Maximum heat transfer for ammonia bottom feed overfed coil can be achieve when overfeeding is 3-4:1. To provide this feeding hand expansion valve...
    3 replies | 144 view(s)
  • chilliwilly's Avatar
    20-02-2018, 01:37 AM
    That's the trouble with any technology that's come along over the last 30 years, its designed with an inbuilt obsolescence so its not future proof....
    3 replies | 272 view(s)
  • Brian_UK's Avatar
    20-02-2018, 12:51 AM
    Brian_UK replied to a thread Piping in Fundamentals
    The diagram is taken from Sporlan document 10-9 and shows a setup for parallel cooling coils designed to stage 50% up and down in response to...
    4 replies | 90 view(s)
  • PaulZ's Avatar
    20-02-2018, 12:06 AM
    PaulZ replied to a thread Piping in Fundamentals
    Hi Ranger This is the relevant page out of the Sporlan book that Mortezania refers to. I am with you about placement of the equalizer line, it may...
    4 replies | 90 view(s)
  • RANGER1's Avatar
    19-02-2018, 09:14 PM
    RANGER1 replied to a thread Piping in Fundamentals
    Glenn, I would have thought equaliser lines should be connected directly after TX bulb as per most manufacturers instructions. This sketch...
    4 replies | 90 view(s)
  • Glenn Moore's Avatar
    19-02-2018, 08:53 PM
    Glenn Moore replied to a thread R407c in Air Conditioning
    I investigated many strange system problems with the 400 range of gases. Several instances of fractionation happened on some supermarket systems...
    14 replies | 512 view(s)
  • al's Avatar
    19-02-2018, 07:45 PM
    Welcome the the forum Tom, from your user name i take it you're a fridgie? That is a very general question, bit like why my car makes a funny noise...
    1 replies | 73 view(s)
  • Glenn Moore's Avatar
    19-02-2018, 07:36 PM
    Glenn Moore replied to a thread Piping in Fundamentals
    There is no need to connect the equaliser line as in the drawing , they can be run independently if you prefer to do it that way. There is nothing...
    4 replies | 90 view(s)
  • mbc's Avatar
    19-02-2018, 04:40 PM
    Hi As you know with too much head pressure on liquid pump we have to close inlet REG valve to evaporator and adjust it (1/3 of evaporator coil ...
    3 replies | 144 view(s)
  • cadwaladr's Avatar
    19-02-2018, 02:44 PM
    Look in the transport section on this forum there is a guy reefer mechanic sure he will advise you.
    3 replies | 146 view(s)
  • RANGER1's Avatar
    19-02-2018, 11:28 AM
    Superfridge, each plant is different because liquid pumps are selected to suit each plant. Pump Head you will notice on pump nameplates is different...
    3 replies | 144 view(s)
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