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  • mizar's Avatar
    24-06-2024, 09:23 PM
    mizar started a thread blue ammonia in NH3
    Hello all i am currently in a bit of trouble so i hope you can help a litle bit too clear this out for me . i have a gea grasso unit where we...
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    5 replies | 211 view(s)
  • stryped's Avatar
    25-06-2024, 12:15 PM
    stryped started a thread Refrigerant recovery in Refrigerants
    When pulling refrigerant from a small heat pump to make a repair then reinstall, I know a tank to put the refrigerant in is used. Can a vacuum pump...
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    3 replies | 105 view(s)
  • stryped's Avatar
    21-06-2024, 12:14 PM
    stryped started a thread 407c bs M099 for R22 retrofit in Refrigerants
    I have read a lot on this subject. The best I can tell, most people say 407c is the best to retrofit r22 systems. The other day out of curiosity, on...
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    2 replies | 139 view(s)
  • stryped's Avatar
    22-06-2024, 01:39 PM
    stryped started a thread What tool to inject oil or dye without having to use refrigerant as repellant in Refrigerants
    What tool is used to inject dye or oil into a split system heat pump without the need of using refrigerant to “push” it if that makes sense?
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    1 replies | 104 view(s)
  • kay86's Avatar
    26-06-2024, 12:17 AM
    kay86 started a thread Small dent on evaporator coil in Fundamentals
    Hello everyone, I was making this coiled evaporator using 10mm x 0.75 copper tubing when I've realized that the tube had some dents along the length...
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    0 replies | 55 view(s)
  • stryped's Avatar
    26-06-2024, 11:52 AM
    stryped started a thread Adding dye using pressure from high side in Refrigerants
    Been looking online at different floresent dyes for hvac. Some look like they connect to the yellow center hose on a guage mannifold. The center hose...
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    0 replies | 39 view(s)
  • stryped's Avatar
    26-06-2024, 11:45 AM
    stryped replied to a thread Refrigerant recovery in Refrigerants
    Could a person use a refrigerator compressor to transfer the refrigerant to a recovery tank? How would a person then transfer it back from the...
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    3 replies | 105 view(s)
  • cricri's Avatar
    26-06-2024, 09:45 AM
    cricri replied to a thread blue ammonia in NH3
    chiller, small amount of ammonia, it'll be cheeper to drain the ammonia, fill in a new charge and see what append...
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    5 replies | 211 view(s)
  • mizar's Avatar
    26-06-2024, 06:26 AM
    mizar replied to a thread blue ammonia in NH3
    hello cricri we have purged brand new reflo 68A oil on the unit the unit is a old grasso 312E chiller with flywhell mass on both motor side...
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    5 replies | 211 view(s)
  • kay86's Avatar
    26-06-2024, 12:00 AM
    kay86 replied to a thread Hygroscopic POE oil in Fundamentals
    Hi Orsus, thanks a lot for your explaination! Cheers, Kay
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    8 replies | 1627 view(s)
  • cricri's Avatar
    25-06-2024, 09:57 PM
    cricri replied to a thread blue ammonia in NH3
    Mizar, If the unit ran some hours you can try an oil analysis. I have seen mistakes with oils pourred in, motor/air compressor oils contain...
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    5 replies | 211 view(s)
  • Grizzly's Avatar
    25-06-2024, 08:59 PM
    Grizzly replied to a thread Refrigerant recovery in Refrigerants
    Hi stryped You do indeed need to vacuum the Cylinder being used to recover / receive the refrigerant. To ensure no air is present. However to...
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    3 replies | 105 view(s)
  • mbc's Avatar
    25-06-2024, 07:30 PM
    mbc replied to a thread Refrigerant recovery in Refrigerants
    Hi It is better to vacuum the tank and it makes easy to remove refrigerant. Air doesn't mix with refrigerant
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    3 replies | 105 view(s)
  • mizar's Avatar
    25-06-2024, 11:07 AM
    mizar replied to a thread blue ammonia in NH3
    hello cricri i am full aware of the problems with use of copper grease i have seen it before so i always use oil when i assemble components....
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    5 replies | 211 view(s)
  • kefah's Avatar
    25-06-2024, 09:36 AM
    kefah replied to a thread Samsung VRF unable to cooling in Air Conditioning
    u mean no power to compressor after 17 min or or compressor overload
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    1 replies | 539 view(s)
  • kefah's Avatar
    25-06-2024, 09:35 AM
    kefah replied to a thread some question in Air Conditioning
    thanks for info another not so good method very common currently for maintaining compressor run at extreme high temp is connecting capillary to...
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    2 replies | 573 view(s)
  • cricri's Avatar
    25-06-2024, 07:24 AM
    cricri replied to a thread blue ammonia in NH3
    Hello Mizar, the blue color is probably the result of copper decomposition. Check the new components refurbished. ie, RT1 and RT1A are similar but...
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    5 replies | 211 view(s)
  • seanf's Avatar
    22-06-2024, 07:01 PM
    seanf replied to a thread What tool to inject oil or dye without having to use refrigerant as repellant in Refrigerants
    https://spectroline.com/product/ez-ject-hvac-leak-detection-kit/ https://yellowjacket.com/product/max-flow-deluxe-oil-pump/
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    1 replies | 104 view(s)
  • stryped's Avatar
    22-06-2024, 02:40 AM
    stryped replied to a thread 407c bs M099 for R22 retrofit in Refrigerants
    What is the best performing refrigerant for an r22 retrofit
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    2 replies | 139 view(s)
  • MrFreez717's Avatar
    21-06-2024, 09:37 PM
    MrFreez717 replied to a thread 407c bs M099 for R22 retrofit in Refrigerants
    If you want to compare performance, you need to find an enthalpy chart or diagram. Enthalpy is a measure of the energy stored in the refrigerant. ...
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    2 replies | 139 view(s)
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