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  1. Replies
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    Lol, no prob.

    Lol, no prob.
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    In the morning, the loop temp was cold, but as...

    In the morning, the loop temp was cold, but as the day goes on, the loop temp warms up. I'm pretty sure I posted that in another post. Maybe not those exact numbers, but I stated as the entering...
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    As the entering water temp increases, the temp...

    As the entering water temp increases, the temp difference decreases...at 85 degree entering water, we have approx a 10-12 degree split...
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    You're forgetting about the head pressure...

    You're forgetting about the head pressure control...restricts the water flow to maintain head pressure...
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    Most of the dirt/debris has been caught by the...

    Most of the dirt/debris has been caught by the inlet strainers upstream of the pump. There are no hoses; the unit is all hard piped on the water side the debris that was cleaned out of the condenser...
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    Bahahahahaha... I immediately got a mental image...

    Bahahahahaha... I immediately got a mental image of a big, barefoot hillbilly pushing on it with a stick screaming 'hey junior, get over here and help daddy make mommy cool'
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    Daaaaang...that's fancy...lol

    Daaaaang...that's fancy...lol
  8. Replies
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    Are you referring to when the system is charged...

    Are you referring to when the system is charged and we have the 'pumpdown' symptom, or when the system is empty and I'm pulling a vac prior to charge?
  9. Replies
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    Juice, the whole building has been a closed loop...

    Juice, the whole building has been a closed loop system until recently (within the last year or so). They swapped out the towers and made it an open loop system. To the best of my knowledge, there...
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    I highly doubt it. Granted, this would cause a...

    I highly doubt it. Granted, this would cause a high head pressure, but this still doesn't explain the bypassing on a new compressor without it showing up on the gauge port that is only a mere 6" down...
  11. Replies
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    The head pressure control is functioning...

    The head pressure control is functioning properly, and there is a sufficient amount of water flow. There is supposed to be approx. 3gpm/ton. Considering we have a 1.5 ton unit, the 7.6 gpm that we...
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    To answer your questions, dobbin, this is a 1 1/2...

    To answer your questions, dobbin, this is a 1 1/2 ton copeland scroll. To the best of my knowledge, this is the first compressor changeout. The owner isn't very forthcoming with info about prior...
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    I understand the concerns about the txv and...

    I understand the concerns about the txv and drier, and that would explain the 'pumpdown' I'm seeing, but it doesn't explain all of the symptoms. Neither does moisture. If it were the filter drier...
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    The txv I installed came straight from the local...

    The txv I installed came straight from the local Liebert dealer, and is identical in size. It is the same BBIVE 1 1/2 that came out with the same 43 VGA power cap assembly.
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    There is no reheat, no humidifier, no hgbp, and...

    There is no reheat, no humidifier, no hgbp, and no solenoid valves in this unit. It is as bare bones as they get. Everything in the system includes a compressor, high pressure safety, condenser coil,...
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    Within 6". The high pressure safety is just down...

    Within 6". The high pressure safety is just down stream from the gauge port another 2" or so. After witnessing all of the madness that is going on here, I swapped gauges, just to make sure my gauges...
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    There is a head pressure control valve. We...

    There is a head pressure control valve.

    We have considered moisture to be the issue, but have concluded that it isn't the problem. Typically, a compressor will not bypass internally until the head...
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    The system is dry and the vac was good.

    The system is dry and the vac was good.
  19. Replies
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    Help with a water cooled Liebert

    Hey everyone, I'm having some serious issues with a 10ish year old water cooled Liebert 1.5 ton unit. (I dont have the model/serial numbers with me as of right now, but if it will/can help, i can get...
  20. Sticky: I grew up outside of Orlando, FL, and shortly...

    I grew up outside of Orlando, FL, and shortly after High School I decided I wanted to give this industry a shot. I moved to the DFW area and started working for my uncle's father-in-law. I knew...
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    If the water source heat pumps are performing...

    If the water source heat pumps are performing most of the heating, this modification wasn't necessary. If the heat pumps are tied to the ems, and only maintain a minimum building temp over night, you...
  22. Check the amp draw of the fan motor as well, and...

    Check the amp draw of the fan motor as well, and check it against the full load amps on the motor itself. If the amp draw is substantially lower than the FLA, you have an airflow issue. Approximately...
  23. It sounds like the txvs are not responding. Is...

    It sounds like the txvs are not responding. Is there a possibility that during install they got too hot and are now stuck?

    Are there other units that utilize the same design that do not have this...
  24. Replies
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    No problem. I know it has been a whole since I...

    No problem. I know it has been a whole since I started this topic, but it may help someone else out along the way.

    I attempted to inspect the internals of the 'manifold', but that's almost...
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    For those of you that may be curious about what...

    For those of you that may be curious about what happened with this, the engineer was skeptical that relocating the pressure switches to the tank would fix the issue. We ended up temporarily...
  26. Replies
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    On the unit with the 300 psi head; What is your...

    On the unit with the 300 psi head;
    What is your superheat and sub cooling?
  27. Replies
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    Let's start with the low-high side unit... What...

    Let's start with the low-high side unit...
    What is your superheat and sub cooling?
    Are your line temps the same (within a couple degrees of each other)?
    Is your compressor actually running...
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    ^THIS!^ It's really not a difficult repair to...

    ^THIS!^

    It's really not a difficult repair to make, it just takes time. I've done this several times (mostly on RHEEM units), and haven't had any call backs. Just be very careful with your heat...
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    I would probably quote them two new systems with...

    I would probably quote them two new systems with line sets and be done with it. The old A/H might have to come out to get to the line set anyways, and depending on the age of the unit, it might be...
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    I had initially thought this too, but realized...

    I had initially thought this too, but realized there doesn't seem to be a gas line...wouldn't really matter...lol
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    Actually, after looking a little harder, is that...

    Actually, after looking a little harder, is that unit sitting on the right curb?? Looks like its pretty far from the outer rails...
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    Looks like they were lazy

    Looks like they were lazy
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    He probably owns stock in Fluke...lol Taping...

    He probably owns stock in Fluke...lol

    Taping your pocket thermometer to the line works well, just keep it insulated to the best of your abilities...even though I have a meter with the k-type...
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    Yes, it's the hot wire Yes, it's causing a...

    Yes, it's the hot wire

    Yes, it's causing a problem. Well, it was...the building engineer is having me replace both motors and wheels... Since one had side to side shaft play, and the dual shaft...
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    I'm checking the same wire on both motors.

    I'm checking the same wire on both motors.
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    They are both single speed, 825rpm motors.

    They are both single speed, 825rpm motors.
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    Fan motor pulling low amps

    I have a 277v 1 phase pair of motors feeding a common duct. They are both 1/2 hp and have a fla rating of 2.3
    motor 'a' is a different make than 'b

    'a' is an old dual shaft motor that has...
  38. The most in a week I've worked is right at 80,...

    The most in a week I've worked is right at 80, but there was a time that I worked all day (8-430) took a 30 min break to eat, went to a building to relocate some thermostats and had to deal with an...
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    For smaller items, you could also use old...

    For smaller items, you could also use old military ammo boxes. They stack fairly neatly, are water tight, and will also last forever. On the plus side, they look pretty cool...lol
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    I ran a call similar to this a few months ago......

    I ran a call similar to this a few months ago...

    They shut the unit off over night since it was fairly cool. The next day the house began to warm up, so the Mrs. got up to turn the unit on but...
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    Im in a truck with a regular bed and 3 tool...

    Im in a truck with a regular bed and 3 tool boxes. Small, zip up bags and boxes will help organize your random items. I like to use small tackle boxes (the clear plastic ones) for all of my wire...
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    Through research I've found that the white plenum...

    Through research I've found that the white plenum cable is not rated for below 32*F. Temps below that will cause the insulation (both the white outer insulation and the individual wire insulation) to...
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    Absolutely nuts...

    Absolutely nuts...
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    All other components are in good condition, and...

    All other components are in good condition, and the the wire doesn't look to be damaged by anything. Also, I tried resetting the unit with the alarm wire disconnected at the condensing unit, but...
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    White plenum cable is the devil!

    I'm currently running a call on a Liebert split that was showing a 'High Head Pressure' alarm on the tstat. First thing I checked was the condenser fan; once this was confirmed to be ok, I reset the...
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    Been there, done that...this is the worst part...

    Been there, done that...this is the worst part about Lennox. Other than that, I don't have any real issues with them.

    The blue igniter box is almost identical to the one in York package units....
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    I go rock climbing in my spare time, and this...

    I go rock climbing in my spare time, and this looks waaaay too dangerous...lol
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    New to the site from the Dallas area.

    Hi everyone, my name is Isaac. I'm new to the site, but not the industry. I've been working in the field for almost 5 years and have experienced quite a bit. The company I work for does mostly...
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    Make sure you guys look up the maximum amp draw...

    Make sure you guys look up the maximum amp draw these t stats can handle, and amp the low voltage circuit. Exceeding the maximum amp draw, as you all know, is a bad thing.

    Also, keep in mind, if a...
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    Agreed; I quoted new pressure switches installed...

    Agreed; I quoted new pressure switches installed off of the tank. Existing ports are to be plugged.
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