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Type: Posts; User: johnnyc

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  1. Replies
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    The controllers will need to be properly...

    The controllers will need to be properly addressed and might need the level changed if it does not have a UVLMP board. You will need to verify the OPM communicates, which will take some minor set up...
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    I have worked on some of these chillers from...

    I have worked on some of these chillers from Italy, ALSD 426. If you don't mind me asking where are these chillers, if they are in NY, I may have looked at them a while back? I was under the...
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    exactly what I needed, thanks a lot

    exactly what I needed, thanks a lot
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    2,803

    Carrier 48MA028 Multi Zone

    Does anyone have any info/IOM's on the old carrier multi zone units? Any help would be appreciated
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    1,236

    There are a few issues if you plan on running it...

    There are a few issues if you plan on running it on Windows XP, gotta call Tech support to iron it out.
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    1,409

    So what you are saying is that every "site" I go...

    So what you are saying is that every "site" I go to I need a separate site license to use my service software. You may be speaking of the end user software license not a "site" license
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    I believe you only need the site license for the...

    I believe you only need the site license for the OPM integration panel
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    920

    I believe there is a service/sales office in New...

    I believe there is a service/sales office in New Jersey that should be able to help you out
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    On an ABB drive, they are factory set so that...

    On an ABB drive, they are factory set so that when you are at or above FLA at all for 1050 seconds the drive will trip on motor overtemp, not drive overtemp, this does not include the 10 or 15 %...
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    Call McQuay in Minnesota (763) 553-5330

    Call McQuay in Minnesota (763) 553-5330
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    950

    Can't say that I have ever seen that one!! It is...

    Can't say that I have ever seen that one!! It is probably one of two things, either the controller came without the ART6 program installed and configured for your machine (you must ask for this when...
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    1,509

    Maybe you have too much or too little gas...

    Maybe you have too much or too little gas pressure, and it is jamming up the valve,or not enough to hold it open
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    8,171

    If your CH/W gets that warm that fast , then a...

    If your CH/W gets that warm that fast , then a parameter will not keep you down, a site condition would. so you still should not have to change settings to get the machine on line. The operator...
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    8,171

    8745 is the manager password, can't get factory...

    8745 is the manager password, can't get factory to give me Tech password w/o training, sorry
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    What type of machine is it? The Screw,...

    What type of machine is it? The Screw, Centrifugal, and Scroll chillers all have different manager passwords. Why would you need the tech password, what are you trying to change?
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    Try replacing the ribbon cable, I have seen many...

    Try replacing the ribbon cable, I have seen many of them cause some problems
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    Is this chiller R22,134A or 407C, in the back of...

    Is this chiller R22,134A or 407C, in the back of the compressor by the economizer wheel there are 3 set screw/orifices and depending on which refrigerant and which size compressor there are, ther...
  18. Thread: McQuay WSHP

    by johnnyc
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    932

    It is going off on low suction temp, and then...

    It is going off on low suction temp, and then runs in cooling for 30 seconds to prevent freeze up, investigate why the suction temp is low or test control. It is a common problem when water flow is...
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    If you are reading "no alarm" then the alarm is...

    If you are reading "no alarm" then the alarm is clear, the unit from the factory comes with the control mode set to off, you need to change that. If the magnet was in the test spot the alarm would...
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    You might want to check on the output board, next...

    You might want to check on the output board, next to the relay for the LLSV the mini 5 amp fuse,it looks like a resistor and pulls out with a pair of tweezers/pliers.
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    You may need an OEM t'stat depending on the board...

    You may need an OEM t'stat depending on the board that is in the machine, if the board is beige and has a terminal with your normal R,Y,G terminals, etc. ( a Mark IV board) then you can use any stat...
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    When it is in the on position, you are overriding...

    When it is in the on position, you are overriding the time schedule (only if unit mode and occ mode are both in auto) and will be on 24 hrs a day. When in auto, the controller would typically look at...
  23. Thread: Microtech code

    by johnnyc
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    1,202

    There are a few passwords depending on which unit...

    There are a few passwords depending on which unit you are looking at, is it a Screw or Centrifugal Chiller or Rooftop/Self contained, need to know to help.
  24. Thread: Mc Quay Unit

    by johnnyc
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    1,814

    I think I spoke to you or your boss on the phone...

    I think I spoke to you or your boss on the phone the other day. Depending on how the machine is set up ,it may have a reset schedule in it. If so, you can take out the R/S or adjust the parameters,...
  25. Thread: Mc Quay Unit

    by johnnyc
    Replies
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    1,814

    The ouptuts for the dampers are Floating Point,...

    The ouptuts for the dampers are Floating Point, the Economizer (waterside) needs a 1000 Ohm feedback. The reason for the alarm is that when it it supposed to be at 0% and the feedback reads 3% or...
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    Would need much more info to help,but go to...

    Would need much more info to help,but go to McQuay.com and download the two Manuals "OMRCPMICRO" and IOMM ALR-1,2, or 3 depending on how old the machine is. it sounds like either there is a demand...
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    For a shell and tube chiller barrel,30-40% is...

    For a shell and tube chiller barrel,30-40% is normal,when you are using a plated heat exchanger in a chiller I have found that when you go higher than 30% you start to get in trouble and at 40 % you...
  28. Thread: McQuay AGZ 055

    by johnnyc
    Replies
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    1,392

    You have to be careful how you wire in a...

    You have to be careful how you wire in a resisitor,etc, the txdr takes 24vac to power it up and sends out 0-5v ,sharing the ground/common.You may need a separate 5vdc supply and then use a resistor...
  29. Thread: McQuay AGZ 055

    by johnnyc
    Replies
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    1,392

    Based on your S# the unit has a MicroTech 1...

    Based on your S# the unit has a MicroTech 1 controller,and the txdr is used for pump downs and as an lp control and refrigerant freeze prot. You probably should not bypass the device,it should be...
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