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Type: Posts; User: dav214

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  1. Replies
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    quoting hvac maintance

    hay guys

    For quoting maintance on hvac equipment , is the best way to go to site or is there a program to use? any advice would be great

    thanks for any help
  2. Replies
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    893

    Checked the reversing valve , is switching ...

    Checked the reversing valve , is switching


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  3. Replies
    13
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    893

    Just like a thump Sent from my iPhone using...

    Just like a thump


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  4. Replies
    13
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    893

    normal amp draw while running

    normal amp draw while running
  5. Replies
    13
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    893

    The noise is when the compressor stops Sent...

    The noise is when the compressor stops


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  6. Replies
    13
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    893

    Yes , iam a tech Sent from my iPhone using...

    Yes , iam a tech


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  7. Replies
    13
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    893

    Customers Sent from my iPhone using Tapatalk

    Customers


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  8. Replies
    13
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    893

    muffler on heat pump

    have a 4 year heat pump very noisey, thinking muffler is no good, running well but for the noise

    any recommendations?
  9. Replies
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    hrv not connected to return

    question

    walk into a house today and noticed the supply from the hrv was not connected to return duct, the supply pipe was 6 " away open and there was a hole in the return, customer called other...
  10. Thread: bypass damper

    by dav214
    Replies
    1
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    347

    bypass damper

    how would I go about setting a bypass damper on zoned system?
  11. Replies
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    378

    thanku

    thanku
  12. Replies
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    378

    semihermetic compressor

    should oil be changed in semi-hermetic compressor every couple of years or just if discoloured or the valves need to be redone

    thanks
  13. Thread: contact cleaner

    by dav214
    Replies
    1
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    263

    contact cleaner

    contact cleaner , just for use on contactors or can been used elsewhere?


    thanks
  14. Thread: gauges?

    by dav214
    Replies
    1
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    389

    gauges?

    is a water or air gauge the same as a refrigeration gauge, if not why not

    thanks
  15. Thread: condenser

    by dav214
    Replies
    2
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    459

    condenser

    hey guys

    what is a molecular condenser
  16. Thread: pump back

    by dav214
    Replies
    14
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    1,091

    thank u

    thank u
  17. Thread: accumulators

    by dav214
    Replies
    3
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    355

    accumulators

    Hey guys
    does all accumulators have fusiable plugs

    thanku
  18. Thread: pump back

    by dav214
    Replies
    14
    Views
    1,091

    pump back

    why and what circumstances would u want to pumpback the refrigerate into the condenser in refrigeration
  19. Thread: humidifers?

    by dav214
    Replies
    2
    Views
    282

    humidifers?

    is there any good steam humidifier with out having to install water filter system and not cost over $, any recomendations
  20. Replies
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    896

    compressor sweating

    is it normal for the compressor to sweat?
  21. Thread: bullet

    by dav214
    Replies
    9
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    642

    gauges not connected

    gauges not connected
  22. Thread: bullet

    by dav214
    Replies
    9
    Views
    642

    bullet

    bullet vacuum pump spits out a little bit of oil on startup, is that normal?
  23. Thread: bullet

    by dav214
    Replies
    5
    Views
    456

    bullet

    bullet vacuum pump spits out a little bit of oil on startup, is that normal?
  24. Thread: reclaimer

    by dav214
    Replies
    5
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    430

    reclaimer

    do u guys put filter dryer on inlet of reclaimers all the time and how often to change?
  25. Replies
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    garden hose and acid or pressure wash

    hey guys me again,

    just wondering to clean condenser coils , do most of u use pressure washer or just a good acid and a garden hose

    thanks
  26. Replies
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    853

    thanks guys

    thanks guys
  27. Thread: hoses

    by dav214
    Replies
    11
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    690

    hoses

    do u guys recommending replacing hoses yearly or when broken or rebuild if u can?
  28. ecobee or nest or honeywell or lennox smart stats

    which is best smart stat in your opinon and why?
  29. Replies
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    853

    mixing gauges with refrigerates

    hey guys

    does it matter if I use r22 gauges with 134A, 500 series?.
    400 series refrigerate I have one gauges for those,i know these should be seperate
  30. Thread: different sizes

    by dav214
    Replies
    1
    Views
    317

    different sizes

    whats up with different size scrader valves,is there any reasoning behind that?
  31. Replies
    11
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    1,186

    Micro channel condenser coil Sent from my...

    Micro channel condenser coil



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  32. Replies
    11
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    1,186

    Contactot good, amp good Sent from my iPhone...

    Contactot good, amp good


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  33. Replies
    11
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    1,186

    7.5,2 stage,2 fans ,fans on with y1 Sent...

    7.5,2 stage,2 fans ,fans on with y1


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  34. Replies
    11
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    1,186

    Pressure are fine and does not trip when I m...

    Pressure are fine and does not trip when I m there


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  35. Replies
    11
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    1,186

    lennox kGA rooftop?

    Lennox KGA rooftop unit keeps tripping manual high pressure switch on stage 1? anyone similar problem?
  36. Replies
    3
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    507

    liquid temp 60 f

    I heard another tech say liquid temp is always 90 F for ac and 60 F refrigeration, is that just rule of thumb?
  37. Replies
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    1,382

    heating refrigerate tanks to remove rest

    Is a electric heat gun acceptable method of heating refrigerate tank to extract remaining refrigerate good method or what is best, tired of warm water
  38. Replies
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    431

    rotary vane compressor

    is there any way to identify a rotary vane compressor from scrolls
  39. Thread: r22

    by dav214
    Replies
    3
    Views
    454

    r22

    can I use r22 gauges with r134a,r12,r502
  40. Replies
    1
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    327

    site user profile

    can t figure out where to fill out site user profile,i go into my profile won t let me fill anything out.Any ideas?
  41. Thread: grease

    by dav214
    Replies
    4
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    581

    grease

    should I be greasing o rings in my gauges regularly?
  42. Thread: hoses

    by dav214
    Replies
    3
    Views
    433

    hoses

    whats the difference between black and coloured refrigerate hoses?
  43. Thread: dx coil?

    by dav214
    Replies
    3
    Views
    398

    dx coil?

    is dx coil another word for evaporator coil?
  44. Thread: inverted trap

    by dav214
    Replies
    2
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    577

    inverted trap

    when and where do I use inverted traps?
  45. Thread: not sure

    by dav214
    Replies
    3
    Views
    398

    not sure

    should my motor/compressor be drawing rla or fla?
  46. Thread: rla and fla?

    by dav214
    Replies
    3
    Views
    514

    rla and fla?

    whats the difference?
  47. Thread: maytag

    by dav214
    Replies
    2
    Views
    427

    maytag

    any opinions on maytag furnace and ac?
  48. Replies
    3
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    964

    24 volt transformer

    why sometimes on 24 volt transformer com goes to ground and sometimes does not
  49. Thread: oxy/acet

    by dav214
    Replies
    32
    Views
    2,494

    thankyou

    thankyou
  50. Thread: oxy/acet

    by dav214
    Replies
    32
    Views
    2,494

    oxy/acet

    for brazing copper with oxy/acet, do I wear cutting torch goggles or clear safety glasses ok
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