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  1. Thread: txv failed

    by pop
    Replies
    25
    Views
    2,620

    Capy123 is right, with the polyester type oils if...

    Capy123 is right, with the polyester type oils if some on burns out a component instead of cutting it out you contaminate the entire system as the oil acts a a detergent and will wash all of the...
  2. Replies
    37
    Views
    2,048

    Lenox is a more progressively engineered product...

    Lenox is a more progressively engineered product than the Reem, the reason their are more Reem dealers available is that Lenox will be more selective on their dealers and there for are more...
  3. Replies
    18
    Views
    3,042

    I assume your air handler is a 40RMQ dual...

    I assume your air handler is a 40RMQ dual circuit, if the oil leaves on start up and then returns when the unit shuts down, one of the check valves is open in one of the evaporator circuits. It is...
  4. Replies
    21
    Views
    1,860

    It appears that as in many cases that the...

    It appears that as in many cases that the technician didn't really repair the unit but added charge to make it run without actually finding the leak and make an actual repair, as a customer you get...
  5. Replies
    94
    Views
    13,870

    Yep I meant OSHA, sorry as you get older the hard...

    Yep I meant OSHA, sorry as you get older the hard drive gets full and the access speed really sucks.

    When younger I would get into it all the time with inspectors, even changed the local building...
  6. Replies
    94
    Views
    13,870

    I read the previous post, and checked the web...

    I read the previous post, and checked the web sight, believe me the EPA is still there alive and well, perhaps a few less budget dollars but viable, has any one taken the time to call them.? If no...
  7. Replies
    94
    Views
    13,870

    I would check with OSHA, I believe they would...

    I would check with OSHA, I believe they would force and ordinance, You can't do this type of work off of a ladder. I believe they will require an accessible 30" walk way around the unit with a...
  8. Replies
    302
    Views
    32,512

    In answer to a couple of questions, 410A and...

    In answer to a couple of questions, 410A and R-22 Compressors have different displacements so the R-22 Compressor can never be converted to 410A. In addition with out chlorine mineral oil will not...
  9. Replies
    10
    Views
    2,112

    Both Carrier and Trane rate a 10 ton condenser...

    Both Carrier and Trane rate a 10 ton condenser with a 7 1\2 ton air handler. This is often speced by Engineers to control latent heat. But you are correct if not charged properly you can damage a...
  10. Thread: Engineering exam

    by pop
    Replies
    8
    Views
    913

    And don't forget reduced velocity caused by high...

    And don't forget reduced velocity caused by high superheat reduces oil return to the compressor causing reduced lubrication causing mechanical failure or a damaged bearing causing the stattor and...
  11. Replies
    16
    Views
    3,378

    This is a fixed orifice system, it is common on...

    This is a fixed orifice system, it is common on this design for the techs to bend or partly to crush the liquid lines espically when changing compressors. This restricts the flow of liquid from the...
  12. Replies
    60
    Views
    5,460

    Most Manufacturors including Goodman will not...

    Most Manufacturors including Goodman will not intintually warrantee merchandise sold over the internet direct or salvage as it is assumed damaged or hacked in. Makes those bargain prices not look so...
  13. Replies
    17
    Views
    2,874

    Check for sweat on the coil or the tube turns,...

    Check for sweat on the coil or the tube turns, the dry areas tell in which part of the circuit the restriction is in, you can replace the feeder header or the entire evaporator coil.
  14. Replies
    10
    Views
    1,079

    But the upside is Installers never by toilet...

    But the upside is Installers never by toilet paper.
  15. Replies
    8
    Views
    781

    http://www.commercial.carrier.com/commercial/hvac/...

    http://www.commercial.carrier.com/commercial/hvac/technical_literature/1,3063,CLI1_CNT2_DIV12_ETI9039_MID4442_QRYY,00.html
    It seems that this sight is strange about how it sends the addresses I...
  16. Replies
    8
    Views
    781

    Sorry it looks like it dead ends you that way,...

    Sorry it looks like it dead ends you that way, try this
    http://www.commercial.carrier.com/commercial/hvac/technical_literature/1,3063,CLI1_DIV12_ETI9039_MID4442,00.html?SMSESSION=NO
    enter 41E in...
  17. Thread: 3 phase CFM check

    by pop
    Replies
    2
    Views
    639

    If you have a copy of ohm's laws you have to use...

    If you have a copy of ohm's laws you have to use a multiplyer
    P = 1.732 x E x I x PF
  18. Replies
    8
    Views
    781

    http://www.commercial.carrier.com/commercial/hvac/...

    http://www.commercial.carrier.com/commercial/hvac/technical_literature/1,3063,CLI1_CNT2_DIV12_ETI9039_MID4442_QRYY,00.html
    This should give you the information you need.

    This is a 1963 model,...
  19. Replies
    8
    Views
    781

    http://www.commercial.carrier.com/commercial/hvac/...

    http://www.commercial.carrier.com/commercial/hvac/technical_literature/1,3063,CLI1_CNT2_DIV12_ETI9039_MID4442_QRYY,00.html
    This should give you the information you need.
  20. Thread: txv v.s. fixed

    by pop
    Replies
    92
    Views
    18,006

    Fixed metering devices have three advantages they...

    Fixed metering devices have three advantages they prevent runaways, they are cheap, they are cheap, oh yeah I almost forgot they are cheap.
  21. Thread: acoil leak

    by pop
    Replies
    5
    Views
    612

    It may be something in the air causing that much...

    It may be something in the air causing that much deterioration in that short period of time. Perhaps organic acids, is it leaking in the center of the coil, if so it is probably formic corosion.
  22. Replies
    9
    Views
    749

    On Bryant Equipment it is a 3/8 Liquid line for...

    On Bryant Equipment it is a 3/8 Liquid line for all normal central systems, on some of the ductless you can go smaller. you didn't mention the size of the equipment or the total line length, that...
  23. Replies
    10
    Views
    1,317

    Cooler air can hold less moisture thus the...

    Cooler air can hold less moisture thus the humidity will normaly be higher in the house because the air is cooler.
    The moisture will travel from a high to a low as you remove moisture in the house...
  24. Replies
    66
    Views
    7,073

    To answer the original Question. The reason that...

    To answer the original Question. The reason that Carrier asks for the two elbows is to allow for good mixing of the gas. They have shown this in thier installation instruction for about 20 or 25...
  25. Replies
    5
    Views
    708

    Getting a picture would be tough. The rack is...

    Getting a picture would be tough. The rack is about 200 miles from my house. I was called in from the selling Supply house to tear the compressors down for the re-builders which are out of state. ...
  26. Replies
    13
    Views
    1,571

    Nobody has any control to compete with the...

    Nobody has any control to compete with the Carrier infinity including trane it is called a user interface it with the installation you are considering you will actually have 4 dedicated CPU's talking...
  27. Replies
    5
    Views
    708

    Busted rods and races the term refers to opening...

    Busted rods and races the term refers to opening up the sump and it looks like someone has been shelling nuts in there, but there does not appear to be a lubrication problem, I believe that an...
  28. Replies
    5
    Views
    708

    Is anyone familiar with the warren 2 stage low...

    Is anyone familiar with the warren 2 stage low temp rack and a problem with shelling out numbers one and two compressors? Running R-22 with no injection on the 1st stage but on the second stage it...
  29. Warrlock- on these units Carrier/Bryant worked...

    Warrlock- on these units Carrier/Bryant worked this out with their and the Sporlan Engineers several years ago.This is as illustrated in the instructions for both the fan coil and the 38 series...
  30. Good job Payson, But the TXV position does matter...

    Good job Payson, But the TXV position does matter greatly on these units, also I would recommend adjusting superheat on each circuit to 8 to 12 degrees +- 3 degrees after you have set your subcooling...
  31. Trane and Carrier are both good equipment and in...

    Trane and Carrier are both good equipment and in the higher end equipment they are ahead of the pack, Trane has nothinng to compare to the Carrier infinity system and wish they did. But you can't go...
  32. Replies
    44
    Views
    7,902

    You are going with a good system, There are a...

    You are going with a good system, There are a few ways they can do the fresh air thing but in most cases it is adjustable. With the dual capacity compressor you should have the best of both worlds...
  33. Thread: 30-ton york

    by pop
    Replies
    29
    Views
    3,235

    The sump is where the oil sets in the bottom of...

    The sump is where the oil sets in the bottom of the compressor with compressor failure it can some times give a hint at what is going on. Good luck, Severe Duty industrial, gotta love it, I did my...
  34. Thread: 30-ton york

    by pop
    Replies
    29
    Views
    3,235

    Get a sump temperature, you said the heads were...

    Get a sump temperature, you said the heads were sweating, normally there will be a small amount of sweating on the end bell but that is all, that sounds like a possible over charge or liquid working...
  35. Replies
    46
    Views
    6,821

    All Manufacturors have a charge weigh in available

    Get me the model # I think i will have the product data available. I know The Carrier Guy can look it up an a 30 year old unit.
  36. Thread: 30-ton york

    by pop
    Replies
    29
    Views
    3,235

    6 Crashed compressors

    How did the Compressors die, sounds like semi hermatic did you pop off the rear bell to see if you had oil return problems, you didn't mention the sub cooling. 21 degrees super heat did you measure...
  37. Replies
    46
    Views
    6,821

    Your Compression ratio is a 1:2.12, the normal...

    Your Compression ratio is a 1:2.12, the normal acceptable is a 1:2 to 1:4 ON an R22 system this depends on loads, integrity of the refrigerant etc. I would not condemn the compressor yet. That is the...
  38. Replies
    46
    Views
    6,821

    You do need the numbers as mentioned by previous...

    You do need the numbers as mentioned by previous submitions, sight glasses for charging are not accurate at all today we just use them to check for moisture in the system. I would suggest you...
  39. Thread: 30-ton york

    by pop
    Replies
    29
    Views
    3,235

    Is this a Commercial Heat Pump?

    if so does it have multiple inside coil circuits.
  40. Thread: subcooling

    by pop
    Replies
    5
    Views
    4,827

    There are slide rules for HVAC that list the...

    There are slide rules for HVAC that list the required super-heats and sub-cooling for fixed orfice and txv applications, Both York and Carrier have nice ones and offer them for both R22 and 410A. ...
  41. Replies
    1
    Views
    1,261

    Try "Doolin's trouble Shooters Hand Book It is...

    Try "Doolin's trouble Shooters Hand Book It is less of an engineering book and uses a simpler way of understanding the electrical and thermodynamics of Refrigeration Repair, It has been updated but...
  42. The smell is produced by organic acids that are...

    The smell is produced by organic acids that are the produced as a byproduct of the arobic and anarobic bacterial life function, the bacteria can actually be dead and moisture will activate the odor. ...
  43. Replies
    8
    Views
    2,338

    Pull Vac. Add any Additional refrigerant by...

    Pull Vac. Add any Additional refrigerant by weight required because of line set length and dryer Volumn, Add through Liquid line, release slowly liquid line first, when equalized open vapor side. and...
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