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Type: Posts; User: m singer

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  1. Replies
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    I use that too. It works for me. I also have a...

    I use that too. It works for me. I also have a turbo torch flow meter. I find that if the float ball is floating "at all" there is too much flow. I think that those are made and calibrated to...
  2. Thread: Subcooling

    by m singer
    Replies
    45
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    1,372

    I understand what you are saying. Outdoor...

    I understand what you are saying. Outdoor conditions do not change fast enough for us to really experience what you are saying in the field, but the theory makes sense.

    Based on what you are...
  3. Thread: Subcooling

    by m singer
    Replies
    45
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    1,372

    It has been my observation that when checking an...

    It has been my observation that when checking an AC's SC, with a dirty condenser coil, that the SC "almost" always goes down after a condenser coil coil cleaning. I have seen exceptions to that, ...
  4. Yes like a clogged "A" coil on an AHU where the...

    Yes like a clogged "A" coil on an AHU where the "A" coil comes before the blower. That will result in a low TESP which will fool you into thinking that you have more air flow than you do. It is...
  5. Replies
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    2,858

    No, The large service valve is suction vapor in...

    No, The large service valve is suction vapor in the cooling mode and hot gas in the heating mode. It heating mode both lines are hi pressure, and that is why there is a common suction port. In...
  6. Replies
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    2,858

    A missing or put in backwards piston would do...

    A missing or put in backwards piston would do this, but in that case the system would have preformed poorly since day one. The OP stated that the problem occurred only a couple of days ago.

    I...
  7. I'm not trying to be a smart ass, but if you...

    I'm not trying to be a smart ass, but if you don't even know what type of charging hose is used to connect to an HVAC system, you are not doing yourself any favors by working on it. Call a pro. ...
  8. Replies
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    2,858

    Possibly an inefficient compressor. Is it a...

    Possibly an inefficient compressor. Is it a scroll or a recip?
  9. Replies
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    2,858

    With a 140 suction pressure? Not a chance.

    With a 140 suction pressure? Not a chance.
  10. Replies
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    2,858

    I think that was Mr Bill's point.

    I think that was Mr Bill's point.
  11. Replies
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    7,212

    No nothing is capped off. I installed an end run...

    No nothing is capped off. I installed an end run "T" with two 3/8" flares.
  12. Actually r410a has a lower compression ratio, in...

    Actually r410a has a lower compression ratio, in most applications than r22. I do not think that it is true that 410a systems have more premature compressor failures than r22. With proper...
  13. Replies
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    7,212

    http://i286.photobucket.com/albums/ll90/marty3006/...

    http://i286.photobucket.com/albums/ll90/marty3006/IMG_13711_zps1jbjo7om.jpg

    The fewer connections/potential leak points the better. Vacuum trees add cost, complexity, bulk and contribute...
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    392

    WRONG. If that were the case a low airflow...

    WRONG. If that were the case a low airflow situation would not cause a evap to freeze up. You have reached your target super heat, but are still evaporating below freezing. You have a low load on...
  15. Thread: Appion TEZ8

    by m singer
    Replies
    41
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    1,553

    That is a reasonable expectation.

    That is a reasonable expectation.
  16. Thread: Appion TEZ8

    by m singer
    Replies
    41
    Views
    1,553

    I guess both of my micron gauges are of very hi...

    I guess both of my micron gauges are of very hi quality. Both my Blue vac and Fieldpiece gauges quickly pull way down when connected directly to my 20 something year old JB pump. The Blue vac pulls...
  17. That is generally true. Higher SEER equipment...

    That is generally true. Higher SEER equipment condenses at a lower temp, due to a larger condenser coil, and evaporates at a higher temp due to a larger evap coil. The lower compression ration...
  18. Replies
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    1,682

    I have a pair of Ak's. One is on the original...

    I have a pair of Ak's. One is on the original digi manifold and the other is on a YJ41 manifold with swivels. I like the ball valves on the digi manifold. I also like the more bulletproof and...
  19. Replies
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    I have the YJ ratchet bender with the reverse...

    I have the YJ ratchet bender with the reverse bend adpt. I like it a lot. Works great up to 3/4, but sometimes it will kink 7/8 badly and I will have to start over. Like Marc said, oil does...
  20. Replies
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    2,163

    I certainly would require the customer to pay the...

    I certainly would require the customer to pay the cost for the compressor up front with the clear and written understanding that the compressor cost will be refunded only if the manufacturer refunds...
  21. Replies
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    546

    The K type thermocouple pipe clamps on the...

    The K type thermocouple pipe clamps on the Fieldpiece are a deal breaker to me. I much prefer the thermistors on the AK900

    Like samgevas I don't want bells and whistles. The AK900 gives me...
  22. Replies
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    1,899

    Beautiful sheet metal work.

    Beautiful sheet metal work.
  23. Replies
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    483

    That depends. Sometimes there is a blanket...

    That depends. Sometimes there is a blanket animal hair and dirt that will peal off the intake side of an evap coil pretty easily with a wire brush and vacuum. It helps if it is damp from condensate...
  24. Replies
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    OP, glad that it working out well for you and...

    OP, glad that it working out well for you and hope it continues to serve you well. I had the same one and it wasn't worth the space that it took up on the truck.
  25. Replies
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    .. It is very easy to regulate refrigerant...

    ..

    It is very easy to regulate refrigerant flow. They do eventually get loose, but there are hex head adjusters on the ends of the manifold to tighten them. New O rings and seals are just a...
  26. Thread: Ford Transit

    by m singer
    Replies
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    19,436

    Sounds like the rear calipers may be dragging? ...

    Sounds like the rear calipers may be dragging? Something isn't right if the rears wear out before the fronts.
  27. Replies
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    Except that it is made in China, no parts are...

    Except that it is made in China, no parts are available for it and the LCD display has no protection on it. An empty blow mold plastic box fell from 3f feet and destroyed the LCD on my TIF scale. ...
  28. Replies
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    1,952

    If its a bolt on TXV then I see no reason why it...

    If its a bolt on TXV then I see no reason why it needs to be replaced unless it is bad. If it is a sweat in TXV the new coil should already have one installed at least in my experience.
  29. Replies
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    935

    Never tool tighten a charging hose. What...

    Never tool tighten a charging hose. What condition was the hose gasket in?
  30. Replies
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    2,005

    I'll second that. My Tek-mate works very well on...

    I'll second that. My Tek-mate works very well on r-22, but it is useless on r-410a
  31. Replies
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    12,210

    That's true, but the president sets the agenda...

    That's true, but the president sets the agenda and proposes spending. Congress can either go along with it or say no. The republicans in congress have "pretended" to oppose Obama's agenda, but...
  32. Replies
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    1,185

    Unless the unit being replaced was a burn out...

    Unless the unit being replaced was a burn out simply blowing N2 through the pipes is all that's needed.
  33. Your making a straw man argument. Not all 2...

    Your making a straw man argument. Not all 2 stage furnaces, installed with single stage t-stats, work the way that you described. Upstaging is not simply based by timing. It is logic based.
  34. Replies
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    You are under firing a "little bit", but that is...

    You are under firing a "little bit", but that is not your problem. Nothing that you posted has me suspecting the gas valve is causing your problem. I would not go as far as to say that the tech...
  35. Replies
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    461

    Yes you will have more heat exfiltration on...

    Yes you will have more heat exfiltration on larger duct work, but that is not going to amount to anything significant. The duct work needs to be sized to move enough air for hi fire.
  36. What's the model no of the furnace? Some 2 stage...

    What's the model no of the furnace? Some 2 stage furnaces can be installed with a 1 stage t-stat and still operate as a 2 stage furnace if w1 and w2 are jumped together. When the control receives a...
  37. Replies
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    779

    He was checking the outlet pressure. What was...

    He was checking the outlet pressure. What was the inlet pressure both with the furnace running and with it off? Obviously your outlet pressure cannot be greater than the inlet pressured. BTW...
  38. Replies
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    779

    The Honeywell part is a low gas pressure switch. ...

    The Honeywell part is a low gas pressure switch. It's purpose is to keep the gas valve from opening if the inlet pressure is not hi enough to be safe.

    You have the wrong gas valve for your...
  39. As if I needed another reason not to work on oil...

    As if I needed another reason not to work on oil burners :gah:
  40. Thread: Home advisor

    by m singer
    Replies
    8
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    980

    I used them a couple of years ago. Won't use...

    I used them a couple of years ago. Won't use them ever again.
  41. I very much doubt that either the name plate...

    I very much doubt that either the name plate charge is wrong or that you added over the name plate. I suggest "measuring" the air flow before concluding that the hi pressure is due to an over charge.
  42. Is it possible that the compressor is running on...

    Is it possible that the compressor is running on hi while the blower is running on low?
  43. Replies
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    1,512

    Let the recovery machine pull the system down to...

    Let the recovery machine pull the system down to at least 10" vacuum. Heat the compressor, if needed, to speed up the process. Break the vacuum with nitrogen. Never open a system under a vacuum...
  44. Replies
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    2,283

    I have the Milwaukee 12v fuel 1/4 hex driver. It...

    I have the Milwaukee 12v fuel 1/4 hex driver. It has plenty of power and run time for just about anything other than spinning a large uni bit. I do have a 18 volt for use when needed, but for most...
  45. Been using Appion G-5 for a long time. It is the...

    Been using Appion G-5 for a long time. It is the best that I have seen
  46. Replies
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    1,158

    I agree that it will "help" keep the switch dry. ...

    I agree that it will "help" keep the switch dry. That is the idea behind the bleed orifice that most furnace air pressure switch "already" have. I disagree that it won't effect the vacuum. ...
  47. Replies
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    735

    Describe your evacuation setup. If your hoses...

    Describe your evacuation setup. If your hoses are not isolated from the system there will be in gassing though the hoses, and the deep vacuum will be lost. .
  48. Replies
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    2,173

    How long does the sensor last and how much does...

    How long does the sensor last and how much does it cost to replace the sensor?
  49. Replies
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    2,936

    if set to p1 it will show + or - for P1. If set...

    if set to p1 it will show + or - for P1. If set for P2 it will show + or - for p2. The bottom or differential reading is just the dif. No + or -
  50. Replies
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    It is a great tool but the pump starts out at...

    It is a great tool but the pump starts out at several inches of WC witch is too hi for almost all of the testing that we do. It is tedious to get the pump settle down close to the range that you...
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