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  1. Just figured I would give a quick update to you...

    Just figured I would give a quick update to you guys. All units are now up and running. Replaced EPR valve, and Unit Cooler fan motor on #4. Replaced all driers. Pulled vacuum to 400 microns and...
  2. Ok, today I worked on it. Recovered it, and...

    Ok, today I worked on it. Recovered it, and replaced Check Valve and Guts of TXV. Thank you guys so much on telling me about replacing internals. That saved me so much headache its unbelievable...
  3. I know how everyone one has opinions and they are...

    I know how everyone one has opinions and they are appreciated. If I could diagnose this the way school, and experience taught me I would. The Majave condensers are on a 4 story roof, and the Unit...
  4. I tried temps across things. It's so cold in the...

    I tried temps across things. It's so cold in the box with all the other units working its next to impossible to get anything accurate. This place is huge. It stores much of the product for 7...
  5. Ewww, guys, I been studying this diagram, and...

    Ewww, guys, I been studying this diagram, and that Drain Loop check would only raise superheat if it failed. What is that check that bypasses the evaporator before TXV.. Wow, That would show the...
  6. This unit works like a Heat pump sort of. It...

    This unit works like a Heat pump sort of. It sends hot gas inside to thaw the evaporator. In some applications they will pipe that loop through the drain pan to thaw out pan during defrost instead...
  7. Adding these to give everyone a better idea of...

    Adding these to give everyone a better idea of what I'm working on. Bottom right is the mode its in. I tried to make a order, but it didn't come out that way.
  8. I know, and If you read up further you can see I...

    I know, and If you read up further you can see I suspected that check valve more then once. LOL I actually thought about condemning it along with the TXV just to be sure. I sure hope it ain't...
  9. Am I crazy, or is there no delete post button to...

    Am I crazy, or is there no delete post button to get rid of that double post?
  10. sorry for the double post. I will delete it when...

    sorry for the double post. I will delete it when it lets me.
  11. If anyone is interested Unit info: Majave M#...

    If anyone is interested Unit info:
    Majave
    M# DBV2702LCD
    S# T08B04540

    Unit Cooler
    M# BHF1220DGA
    S# D08A05111

    http://www.heatcraftrpd.com/PDF%5CI&O%5CH-IM-HGD.pdf
  12. If anyone is interested Unit info: Majave M#...

    If anyone is interested Unit info:
    Majave
    M# DBV2702LCD
    S# T08B04540

    http://www.heatcraftrpd.com/PDF%5CI&O%5CH-IM-HGD.pdf

    http://www.heatcraftrpd.com/PDF%5CI&O%5CH-IM-HGD.pdf
  13. Thanks for all the input guys. I am putting a...

    Thanks for all the input guys. I am putting a new TXV in this month, and will keep you updated as from what I find. I am going to rebuild it as suggested in this post. The reason the repair can...
  14. If you notice the distributor tips in that image...

    If you notice the distributor tips in that image are only frosted lightly in the coil. The other three units the distributors were totally frosted just like I usually see in boxes I work on. That...
  15. Yes, I did turn it 3 1/4 turns down, and then...

    Yes, I did turn it 3 1/4 turns down, and then marked it with magic marker in case they called someone else out. I got nothing out of it. I didn't want to go any further then that. Adjusting is...
  16. Reason for new valve is that its wide open...

    Reason for new valve is that its wide open flooding evap with liquid refrigerant, 0 superheat, 60' ambient with one condenser fan running. Its not overcharged, and my sub cooling is normal. First...
  17. Industial Freezer Brazing techniques question.

    I will be changing a TXV on a Majave unit in a environment where there are 3 others running at the time. The box will be 0 degrees during my work. The TXV is 7/8 in and 1 1/8 out. I have never...
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    Thanks for the compliment on the work. I am on...

    Thanks for the compliment on the work. I am on the mechanical side at my company, but was asked to run DP's and a refrigerant leak detector for 3 chillers. The control side was pretty impressed...
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    Thanks for all the help guys. Had 3 to do and...

    Thanks for all the help guys. Had 3 to do and they came out nice..
  20. Replies
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    They are Transducers. Thanks for the help guys!

    They are Transducers. Thanks for the help guys!
  21. Replies
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    Differential Pressure Switches Question.

    I'm Installing some Schneider EPW Series DP switches on chilled water, and Hot water system. It's the first time I have done this and need to know where to land HI and Low. I'm assuming Supply is...
  22. Replies
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    I understand it now. Now that I think of it that...

    I understand it now. Now that I think of it that was a pretty dumb question. Electric Heat is 100% efficient. 1 watt in 1 watt out. I was thinking about controlling temp rise with fan peed. ...
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    Airflow does make a difference. That air flow...

    Airflow does make a difference. That air flow switch won't make till it knows there is enough air to keep that limit from tripping. I still say if you push less air into a electric heater it will...
  24. Yes, I noticed the tap wrong, but it must have...

    Yes, I noticed the tap wrong, but it must have been that way since installation most likely. In all honesty I did not try changing it. I gave the transformer to a fellow tech that wanted to check...
  25. I agree! That was the reason for my post. I...

    I agree! That was the reason for my post. I knew it was bad, but wanted a better understanding as of why. I like to know why things are bad, and theory sometimes tricks us. Ohming out windings...
  26. Replies
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    1,551

    Formula Question

    I am installing a 60KW inline duct heater which equals about 204,840 Btu/h. I know how to do a CFM calculation with Electric Heat. Is there a formula to tell you how much heat is picked up by the...
  27. Thanks for all the input guys

    Thanks for all the input guys
  28. Thanks for the input guys. The transformer was...

    Thanks for the input guys. The transformer was bad but ohmed out good. A meggar would have showed a grounded winding?
  29. Weigh it in. Thats about the best you can do in...

    Weigh it in. Thats about the best you can do in my opinion. Superheat and Subcooling does not work in low Ambient temps. Way too many variables with a HP in cold weather. You can get it to work,...
  30. Ignition Transformer Question on Trane Gas Pack.

    This is probably a stupid question but need to ask because it still has me curious as to why.

    On a no heat call on a Trane RTU I find a blown 20amp fuse. Replace it, and still will not fire up...
  31. Replies
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    Thank you for explaining this to me! I know how...

    Thank you for explaining this to me! I know how it works, but new to refrigeration. Much Appreciated!
  32. Replies
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    Thanks for the input guys. Customer called...

    Thanks for the input guys. Customer called today, and said Unit runs great during the day, but unit drops to 26' at night. I explained to him about low ambient temps, and also explained to him that...
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    Cut in Cut Out Setting

    Probably beating a dead horse, and I do understand cut in cut out, but not sure if I am going about this totally wrong. I was just curious if experienced guys have any really good tips to getting...
  34. Replies
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    I don't have digital gauges. Everything can be...

    I don't have digital gauges. Everything can be done without them. Plus I like to have different gauges for different refrigerants. I also like to have recovery gauges, and Dye gauges. No way I...
  35. Thread: Van Setup

    by budman21901
    Replies
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    1,585

    Thanks for the info on the sliding locks. I had...

    Thanks for the info on the sliding locks. I had no clue what those things did. I purchased two locks and now use them. I agree those factory locks are garbage! I was actually looking for images...
  36. Thread: Van Setup

    by budman21901
    Replies
    10
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    1,585

    Van Setup

    I was just given a van with a KUV truck body. I was wondering if anyone has any opinions on setting it up. I will be doing Installs, and service work. I will also be keeping track of a lot of...
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    following other techs that do not provide more...

    following other techs that do not provide more info can be a nightmare. 1.5psi in 30 minutes i would not trust as a leak. Pull a Vac down to 300 microns, and let it sit for 15 minutes. If it stays...
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    Ended up being a return issue. Although it is...

    Ended up being a return issue. Although it is plenty large enough it seems it has so many turns that it is losing velocity. I will take pictures next time i am there.
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    York with ECM blower question's.

    York 5ton split system questions. Unit is a split system york HP with 3 banks of electic heat.

    M# MV2ODN21CB
    S# W1D2716695

    Startup of a York split system. First off Plenum is a entire mess!...
  40. Replies
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    947

    York with ECM blower question's.

    York 5ton split system questions. Unit is a split system york HP with 3 banks of electic heat.

    M# MV2ODN21CB
    S# W1D2716695

    Startup of a York split system. First off Plenum is a entire...
  41. Replies
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    4,714

    At the moment you have a 4 degree split, and that...

    At the moment you have a 4 degree split, and that is a major issue! It's time to call a tech out to your home. Regardless of what you think is going on. The system must work correctly before you...
  42. I have worked for a Trane dealer, and have...

    I have worked for a Trane dealer, and have installed a few 20I systems. Love installing them, but hell with working on them. LOL I personally put a 15i in my home and stayed away from anything 2...
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    discharge bypass valve noisy.

    It is a 7ton split system constant volume air handler supplying to 8 VAV's. They have a VFD to control fan speed by static pressure. Obviously when VAV's are closed, and outside air is closed VFD...
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    Sorry for not getting back to this earlier. I...

    Sorry for not getting back to this earlier. I moved so i have been busy and just got internet hooked up at my new house. Anyways, i replaced the TXV and it solved all the problems. The TXV must...
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    Thanks for the info. No there is no humidity...

    Thanks for the info. No there is no humidity option. I know exactly how a TXV works. They are just not called power heads here, or i have never heard them called that. Diagnosed them many times, ...
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    I am attaching a PDF of the actual unit...

    I am attaching a PDF of the actual unit specifications. Thanks everyone for the replies.

    http://home.comcast.net/~budman21901/lennox.pdf
  47. Replies
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    Its a TXV with a sensing bulb. Please help me...

    Its a TXV with a sensing bulb. Please help me understand this if it applies Its not a EEV if that is what you mean.
  48. Replies
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    Yes direct drive. Yes, all setting verified in...

    Yes direct drive.
    Yes, all setting verified in controller.
    Yes, SH/SC normal on first stage. SH high, and SC normal on 2nd stage.
    Whats this power element you speak of? Please explain? ...
  49. Replies
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    Very simple. Drops straight into a room, and...

    Very simple. Drops straight into a room, and return pulls from the room. No duct issues at all.

    No EEV, but just a normal TXV which i have diagnosed as operating properly. Again, this is a...
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    Not a digital. Its the new Ultratech series. I...

    Not a digital. Its the new Ultratech series. I provided a link at the bottom of the first post of how it works.

    ...
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