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Type: Posts; User: Dcoursey86

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  1. What is the MAWP and what was the system...

    What is the MAWP and what was the system pressure? The failure mechanisms of burst and collapse are very different, just because something is rated for a certain internal psi doesn't mean it will...
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    I'm assming W7212? I"ve had multiple occasions...

    I'm assming W7212? I"ve had multiple occasions where the economizer changeover control was failing and would cause chattering of the compressor contactor when it was close to its changeover point. I...
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    Thanks, I'm just glad I could put this to bed....

    Thanks, I'm just glad I could put this to bed. Has been weighing on me.
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    Wasn't all over the place, my explanation may...

    Wasn't all over the place, my explanation may have been but this thing was a mess. Was able to finally catch what was happening after I completed the maintenance. Pilot regulator failing and not...
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    Combustion numbers were within Power Flame specs,...

    Combustion numbers were within Power Flame specs, have test numbers on site.

    I don't remember draft number off hand but have that on site.

    Yes pilot stays on throughout the cycle.

    I did...
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    No low gas switch. Main valve was shut but...

    No low gas switch.

    Main valve was shut but pilot was still lit, intermittent pilot. This was still generating a 5 VDC signal and does as long as the pilot stays lit.

    You are correct, Honeywell...
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    Columbia CT-35

    Good evening, all. Having an intermittent issue with a Columbia CT boiler failing on a "19" fault on the flame safegaurd. First some backstory, we just picked up this account after the tech who had...
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    Havens FDC Series cooling tower

    Anyone have any literature on these they'd be willing to share? Not something I need, but I like to keep literature for all equipment in accounts I have and I'm struggling to find anything online...
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    Clearly....

    Clearly....
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    Used push/pull and a recovery tank, worked...

    Used push/pull and a recovery tank, worked perfectly. Thanks for the help guys.
  11. Thread: Rover V7.2

    by Dcoursey86
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    458

    Trane BAS tech support suggested it was a...

    Trane BAS tech support suggested it was a possible computer security issue. Found out the computer that my customer installed Rover on did not have administrative access. Got it corrected by their IT...
  12. Thread: Rover V7.2

    by Dcoursey86
    Replies
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    458

    Rover V7.2 Through initial research I found that...

    Rover V7.2 Through initial research I found that V7.1 needed the LNS plugins in order to service the ZN510. I attempted to install the LNS Plugins but it shows a message stating that the version of...
  13. Thread: Rover V7.2

    by Dcoursey86
    Replies
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    458

    Rover V7.2

    Newer to Rover. Customer of mine has several ZN510's they want replaced and commissioned. They purchased Rover themselves and attempted to do the work but were unable to figure it out. I seem to be...
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    Contact a Trane supply house and ask them for a...

    Contact a Trane supply house and ask them for a parts breakdown or try www.comfortsite.com.
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    I'd rather not do it in a way that loses any...

    I'd rather not do it in a way that loses any refrigerant.
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    I'll look into renting a tank if I don't build...

    I'll look into renting a tank if I don't build something to get this done. Thanks again for the info. Stay busy.
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    So effectively you're using the recovery tank as...

    So effectively you're using the recovery tank as an oil separator, clever. Now you've got me thinking about what I could make as an oil separator that would work similarly. My "tool room" guy would...
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    RTHB Oil Change

    Silly question maybe. RTHB from 96, no isolation valves to pump charge into the condenser. I have to pull the charge to do an oil change, yes? I don't see/know of a way around it.
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    I had a similar issue to this but it was on a UCP...

    I had a similar issue to this but it was on a UCP not an RTRM. RTRM's have terminals for a conventional thermostat as well as the Trane zone sensor. If you have a conventional thermostat interface I...
  20. No faults in 2 months since replacement of the...

    No faults in 2 months since replacement of the hpc. This one is put to bed.
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    Whats your dew point at the source of...

    Whats your dew point at the source of condensation vs. the air temp?
    Is your unit sized properly and keeping the humidity down in the space?
    Most of the time I see this its because of infiltration.
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    To me, epoxy is always a temporary repair. I...

    To me, epoxy is always a temporary repair. I suggest either using an aluminum alloy to solder the leak or replacing the coil. Where is the leak on the coil?
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    Yea, thats what I meant by tag. Unfortunately at...

    Yea, thats what I meant by tag. Unfortunately at this site the tower fans are not on drives, simple on/off.
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    That seems to be the consensus. I'll be sure to...

    That seems to be the consensus. I'll be sure to check that design tag again when I'm there this week. If not there I'll be calling Trane to get the info.
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    Agreed, and I did tell the engineer that he needs...

    Agreed, and I did tell the engineer that he needs to have them control the fans based on entering water temp. I just wasn't sure what the "proper" temp should be, as I've not had that much exposure...
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    I didn't see that info on the design sticker but...

    I didn't see that info on the design sticker but maybe I missed it. I'll be back there later this week to do a running inspection so I'll be sure to double check.
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    Thanks for the input. The drive is water cooled.

    Thanks for the input. The drive is water cooled.
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    The engineer seemed fuzzy on what was happening...

    The engineer seemed fuzzy on what was happening but from what I understand they were trying to control the second tower fan with temperature delta between entering and leaving condenser water. First...
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    Any update on this?

    Any update on this?
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    CVHF condenser water temp

    This might be too open ended, but I was wondering if anyone had any input on what the best condenser water temp for these machines is or if there is a "range" that is "normal". This comes up because...
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    Probably an oil stain from manufacturing. Never...

    Probably an oil stain from manufacturing. Never seen one leak in the middle of the coil, always seems to be at the header.
  32. Update on this. I replaced the HPC roughly a...

    Update on this. I replaced the HPC roughly a month ago and have not had any transition faults or momentary power loss faults since. Now, its been hot in Chicago so the chiller hasn't been cycling as...
  33. I ran this exact service call last week. Unit has...

    I ran this exact service call last week. Unit has been installed for 8 years. Customer complaint of no cooling. No condenser installed.

    “It worked before”

    “.....no it didn’t.”


    Sent from...
  34. Why was the first action to “reclaim” refrigerant...

    Why was the first action to “reclaim” refrigerant to try and stop it from going off on high head? Was the additional charge added for lineset and condenser not calculated correctly?

    What has been...
  35. How high of a set point are we talking? ...

    How high of a set point are we talking?


    Sent from my iPhone using Tapatalk
  36. Thanks for the info. Just got approval from the...

    Thanks for the info. Just got approval from the customer to replace the HPC. Going to give it a shot and see.


    Sent from my iPhone using Tapatalk
  37. Thread: TXV problem

    by Dcoursey86
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    You need to check your superheat and subcooling...

    You need to check your superheat and subcooling and diagnose from there. If you have high subcooling entering the TXV and high superheat leaving the evap then you might have an issue with a...
  38. Nozzles and GPM to tower.

    Nozzles and GPM to tower.
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    Get a comfortsite login. ...

    Get a comfortsite login.

    https://www.comfortsite.com/ebiz/default.aspx?
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    Used as a snubber. Most likely as arc suppression...

    Used as a snubber. Most likely as arc suppression in this instance. Allows for an alternate path of voltage so that its not discharged across the contacts when they open. No snubber, arc, damaged...
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    PWM amplifier is for bearings. Did you verify...

    PWM amplifier is for bearings.

    Did you verify HV DC-DC converter?
    No LED's on backplane would suggest no power from the HV DC-DC converter.

    Backplane has onboard LV DC-DC converter that...
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    Compressors probably not the issue. I'd make sure...

    Compressors probably not the issue. I'd make sure you meg them regularly to make sure they don't continue to drop.

    I've actually had something intermittent enough that I had to put tattle tales...
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    Something inline with your contactor coil is...

    Something inline with your contactor coil is causing the issue. Have seen time delays, encapsulated pressure switches, and relays all cause this. Last time i had this happen it was the high pressure...
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    R123 is correct, there is not a way through...

    R123 is correct, there is not a way through techview that you can change it from stop to auto. Just had this problem 2 weeks ago on a CGAM. Good luck.
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    I personally like Nylog, never had an issue when...

    I personally like Nylog, never had an issue when using this stuff. Works well on threads and on o-rings.
  46. RTHB momentary loss of power, transition compete input open.

    Have used this site for years for information but its my first time posting so forgive me if I'm in the wrong area. My company (Althoff Ind.) has serviced an account with an RTHB450 for multiple...
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