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  1. Started replacement compressor. No issues ,No...

    Started replacement compressor. No issues ,No Problems
  2. Hey Maka, I am still out here. Been working on...

    Hey Maka, I am still out here. Been working on multiple YCIV and YCAV's with issues and have not been on here. Just about to get back to this jobsite.
  3. Reman, that's sounds exactly like what happened....

    Reman, that's sounds exactly like what happened. I have not been on here for a while but, looks as though it created a good discussion. I never got a clear answer on the failure from the...
  4. Megged before install. Also supplier furnished me...

    Megged before install. Also supplier furnished me with their meg readings and start info from test run. That's why they are confused too
  5. top two pics are new compressor that failed at...

    top two pics are new compressor that failed at start up, bottom two are the original failed
  6. Nope not in a vacuum.

    Nope not in a vacuum.
  7. Copeland 8D compressor "BANG" WHAT!!!! ever seen this?

    First time trying to attach pics , hope they work. 8D compressor short to ground. Installed new compressor, contactors, etc .etc. Compressor wired part start. Dry ran compressor to check contactor...
  8. Replies
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    580

    The best way to work on the Simplicity is laptop...

    The best way to work on the Simplicity is laptop and software. The board can tell the unit to do different functions. I have found programs changed or settings changed. Also new boards installed and...
  9. Replies
    3
    Views
    712

    carrier i vu rtu open

    Hey guys, I have a customer with a carrier unit. I was told I needed the I VU software and cables to connect. Got it all. Followed info given. I am having connection issues. I am not that familiar...
  10. Replies
    1
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    395

    Chipkin and automated logic

    Hey everyone, first off I am a mechanic and not a controls tech. I have a unit with a newer automated logic controller. Can I use Chipkin automation systems BACnet explorer to access this control. I...
  11. Replies
    2
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    555

    York simplicity software,laptop and connectors

    York simplicity software,laptop and connectors
  12. Replies
    8
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    762

    I guess maybe shutdown pump and check static....

    I guess maybe shutdown pump and check static. Then pressure X 2.3 ft per pound= rise.. Such as 50ft high= (21.7 lbs) --22lbs static.
  13. Replies
    8
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    762

    Chiller and boiler.

    Chiller and boiler.
  14. Replies
    8
    Views
    762

    Water/Pump pressure?

    What do you do to determine proper pump/water pressure on closed loops. If just checking/ inspection of system? Positive-Negative suction?
  15. Thread: JC ZJ12

    by OhioTech
    Replies
    5
    Views
    577

    I was just about to answer when fixed it...

    I was just about to answer when fixed it yourself. You can also check airflow with magnahelic if issue continues. Compare to swith setting.
  16. turn on blower 24/7

    turn on blower 24/7
  17. Replies
    3
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    786

    Is it set up as CV or VAV? It makes a difference.

    Is it set up as CV or VAV? It makes a difference.
  18. Replies
    1
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    467

    VERIABLE??????????????????????????????????????...

    VERIABLE?????????????????????????????????????? What?????? spell check....... Your question makes no sense.
  19. Replies
    7
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    754

    What is the issue?What brand unit?

    What is the issue?What brand unit?
  20. Replies
    7
    Views
    841

    reversing valve could be the problem but,...

    reversing valve could be the problem but, probably the compressor
  21. You tell the customer the the situation. Give...

    You tell the customer the the situation. Give them the option. You have contacted the dealer with no luck so far. I guarantee anything from BAC is usually twice as much money as anything you can get...
  22. Replies
    15
    Views
    5,271

    Check out this site for Trane info ...

    Check out this site for Trane info http://hvac.amickracing.com/RTU%20Training/Trane%20RTU%20info/
  23. I agree. Take it to your belimo dealer and toss...

    I agree. Take it to your belimo dealer and toss it on the counter. They will fix you up with linkage ,switches etc.
  24. Replies
    19
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    3,586

    Dupont M099. You loose capacity. If the unit is...

    Dupont M099. You loose capacity. If the unit is undersized,dont use it. Us on exv,txv system. Replace any rubber o rings.
  25. Replies
    52
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    12,069

    I just attended a Dupont refrigerant seminar. You...

    I just attended a Dupont refrigerant seminar. You can not mix. You can top off M099,a certain percent. I can't remember what percent (m099) off the top of my head.
  26. Thread: megged out

    by OhioTech
    Replies
    9
    Views
    1,788

    Meg IOL?

    Meg +250 good. Meg will show moisture of system and integrity of motor. If moisture on compressor body at terminals meg can read bad. IOL- amps? volts? load? head pressure? Connections?Contactor?
  27. Replies
    8
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    1,706

    http://www.gordonpiattparts.com/manuals.htm ...

    http://www.gordonpiattparts.com/manuals.htm Manuals on line CiCi boiler..Gordon Piatt parts rep. John Zink bought Gordon Piatt
  28. Varitrane VAV fan ON and OFF- Mechanic with control question

    Varitrane VAV box. Heating fan off and on. Electric heat air flow switch was not making. Replaced filter.Pulled and cleaned blower. Heat works now when fan is running, But, fan starts and stops...
  29. Replies
    5
    Views
    1,227

    Anyone plugged a tube on a fire tube boiler

    I have a fire tube boiler with one tube leaking. Boiler inspector noticed.The boilers are over 30 yrs old and are going to be replaced next year.I have a concern with plugging. If water enters the...
  30. Replies
    13
    Views
    2,475

    DONE!!!!!!!!!.Froze my A________ off! -3 deg 20...

    DONE!!!!!!!!!.Froze my A________ off! -3 deg 20 ft in air. LIVIN THE DREAM!Turbo torch to cut channels and holes in ice because pan was overflowing with ice up into the coil. Moved hose around...
  31. Replies
    13
    Views
    2,475

    Big Block of Ice

    Looking for ideas to thaw ice and replace a defective drain pan heater. Coil 20 ft in air. Pan a solid block of ice about 10ft long x 1ftwide x 6in deep . 0deg in room/warehouse. I need to get old...
  32. Replies
    42
    Views
    3,332

    Thanks for the info EngineerDave

    Thanks for the info EngineerDave
  33. Replies
    42
    Views
    3,332

    Thanks Eng Dave for info

    It looks as though the float on the seperator is hanging up and not allowing the oil to go to the oil receiver. Quoted customer new float assembly,henry oil level control for compressors and oil...
  34. Thread: P-66 or motor

    by OhioTech
    Replies
    7
    Views
    1,010

    All electric aside...make sure you are using a...

    All electric aside...make sure you are using a ball bearing motor. A sleave bearing will fail.
  35. Replies
    42
    Views
    3,332

    Central Ohio

    Central Ohio
  36. Replies
    42
    Views
    3,332

    I would say the suction line is 100-125ft...

    I would say the suction line is 100-125ft insulated untill it gets to the accumalator. Accumalator is a ball of ice.The compressor that has failed is thr first one after the accumalator. I will check...
  37. Replies
    42
    Views
    3,332

    OK then 20-25 deg superheat at compressor. I am...

    OK then 20-25 deg superheat at compressor. I am confused at the 6 deg at the evaps than was recommended and then 20-25 at the compressor. I guess maybe I should check the total tonnage of the...
  38. Replies
    42
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    3,332

    I am getting replies from all of you so fast I am...

    I am getting replies from all of you so fast I am falling behind on your replies. I noticed someone said 6 degrees of superheat on the evaps.
  39. Replies
    42
    Views
    3,332

    No less than 20 degrees superheat? So like 10-15...

    No less than 20 degrees superheat? So like 10-15 Just want to make sure on the same page
  40. Replies
    42
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    3,332

    The condensers looked clean. It is mounted right...

    The condensers looked clean. It is mounted right above the "shack" the compressors are in. Some genius mounted them there so its like working on an airplane with the props running. I did notice that...
  41. Replies
    42
    Views
    3,332

    The cannister I am talking about is on the side...

    The cannister I am talking about is on the side of each compressor. It has a sight glass and an adjustment to control the oil level. It mounts on the compressor where there is normally a sight glass....
  42. Replies
    42
    Views
    3,332

    At compressor start up I always engage the new...

    At compressor start up I always engage the new contactors, when wiring not connected to the compressor. I allow the oil safety to time out. To confirm operation. I appreciate the help. I just have...
  43. Replies
    42
    Views
    3,332

    I will replace the filters. Check safeties....

    I will replace the filters. Check safeties. Replace the henry oil level cannister. Replace compressor .Check superheat on each coil and at the compressors. I guess I will have to babysit the old...
  44. Replies
    42
    Views
    3,332

    The solenoid does shut off. The defrost timer did...

    The solenoid does shut off. The defrost timer did shut off solenoid valve and pump down while I had just began checking the recent install. The compressor that had been changed, has been down for...
  45. Replies
    42
    Views
    3,332

    I realize the compressor is done. I am asking...

    I realize the compressor is done. I am asking about the superheat so, I know I am ok while running. I want to be thorough. I also believe I should check superheat on each of the three evaporators. I...
  46. Replies
    42
    Views
    3,332

    Not going to run it. Compressor one week old....

    Not going to run it. Compressor one week old. Going to have to replace. Just looking for info so we don't loose another.
  47. Replies
    42
    Views
    3,332

    HVAC guy needing Comm ref Mech Help

    I am involved in a small frozen food warehouse. The unit is a Tyler has two copeland six cylinder compressors probably about 25 ton. Our companies mechanic that took care of this is no longer with...
  48. HVAC guy needs Ref Experts opinion.Tecumsah high amps at start.

    First thing refigeration guys I am 25yrs hvac not refrigeration so, I am asking for your expert advice. A building I take care of has a tennant that has lost two compressors in six year old unit.This...
  49. Replies
    16
    Views
    5,440

    ABB ACH550 drive overcurrent fault

    I have a building with four Carrier 48AJ RTU's. I believe installed in 2005. They each have an ABB ACH550-UH 10 hp drive. There are nuisance trips of "overcurrent" on these units. Different...
  50. Thread: manometers

    by OhioTech
    Replies
    32
    Views
    2,740

    Batteries never die on the u-tube

    Batteries never die on the u-tube
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