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Type: Posts; User: nlovas

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  1. Thread: Micron creep

    by nlovas
    Replies
    3
    Views
    484

    Thank you. You've given me important information...

    Thank you. You've given me important information I need to help me do a good job.
  2. Thread: Micron creep

    by nlovas
    Replies
    3
    Views
    484

    Micron creep

    First time I've ever used a micron guage. 410a split system. I pulled vacuum and here are my results:
    Pump shut off at 144 microns.
    +1 hour: 275 microns (131 increase).
    +1 hour: 339 microns (62...
  3. Replies
    12
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    1,029

    Thanks to all

    So I ended up getting n2 so I wouldn't void the manufacturer's warranty. Cool thing though is the n2 regulator comes with an adaptor for co2.
  4. Replies
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    1,029

    Bard Manufacturing Co. has no problems using co2...

    Bard Manufacturing Co. has no problems using co2 to leak check a 410a system to 200psi.

    This pdf is titled "servicing procedure - R410a leak test evacuation charging"
    ...
  5. Replies
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    1,029

    Causing severe moisture? In my understanding the...

    Causing severe moisture? In my understanding the amount of moisture remains the same; perhaps it changes from vapor to liquid form. Where would the extra moisture come from since the co2 is dry.
    ...
  6. Replies
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    1,029

    ppm vs micron relationship

    Can co2 be used for triple evacuations on 410a systems?
    I just got off the phone with Praxair. They sell:

    N2 at 2ppm of h2o.
    co2 at 10ppm of h2o.

    Ya co2 has a slightly higher moisture...
  7. Replies
    12
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    1,029

    CO2 cost to rise?

    I need to buy a tank for purging/pressure testing and I'm leaning toward co2. Everyone in my area uses nitrogen and they're no help. Is using co2 cost effective compared to nitrogen? Also, since...
  8. I'm so getting me some. I pour my boxed wine...

    I'm so getting me some.

    I pour my boxed wine into a bottle to not seem like such a scumbag.
  9. Thread: A little help

    by nlovas
    Replies
    3
    Views
    485

    Anything under $5 a message pops up, "Gift amount...

    Anything under $5 a message pops up, "Gift amount is invalid." Why don't they want my dollar?
  10. Replies
    14
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    1,403

    Water expands 9% when frozen.

    Water expands 9% when frozen.
  11. Replies
    0
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    350

    box of misc solder

    I found many rolls of solder in the basement. The labels are all disintegrated so I don't know what their composition is. Is there any application I can use this solder on or is it best to toss em...
  12. Replies
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    1,502

    I took the blower fan out and cleaned it really...

    I took the blower fan out and cleaned it really well. I also cleaned the evap and condenser. It embarrasses me to admit that the whole problem was a clogged condenser. The unit doesnt have a wire...
  13. Replies
    15
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    1,502

    Condenser fan is running within amperage. ...

    Condenser fan is running within amperage. Compressor is at 1 amp over rating. I did not amp furnace fan.
    I plan on cleaning both coils and the furnace fan tomorrow.

    If there was an overcharge...
  14. Replies
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    1,502

    High pressures high superheat is what now?

    I looked at a 12 year old 10seer Trane R22 split system today and could not solve the problem.
    Complaint: AC runs and cools but not sufficiently.
    First thing I did was to check the pressures: 90...
  15. Replies
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    12,045

    sun and wind?

    Must be placed in the sun and wind? Nowadays, we have fans that'll take care of that. Maybe that was the excuse they gave to the homeowner to install it in an easier location.
  16. Replies
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    512

    Goodman residential downflow nat. gas furnace...

    Goodman residential downflow nat. gas furnace sharing a common flue with an identical furnace.

    The glow plug starts glowing but as soon as it shuts off then the gas valve finally opens. One...
  17. Replies
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    633

    Is there a Leak Stop I can use with HotShot...

    Is there a Leak Stop I can use with HotShot systems? HotShot's manufacturer told me "we dont test for leak stop," so that wasnt much help.

    HotShot closely resembles R12 operating characteristics....
  18. Thread: pressures

    by nlovas
    Replies
    6
    Views
    1,544

    Add 30 degrees from ambient for high side...

    Add 30 degrees from ambient for high side pressure.

    Low side temp should be 38 - 40.

    Does this rule of thumb work for other refrigerants? i am particularly interested in r134a and r12.
    ...
  19. Replies
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    1,969

    My boss tells me that condensing furnaces need...

    My boss tells me that condensing furnaces need larger ductwork than 80%ers. He says he wont replace an 80% with 90% without enlarging all the ductwork because "the efficiency is lost." This makes no...
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