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    We can measure the SC. Thanks.

    We can measure the SC. Thanks.
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    System

    It is a R-134a system with a 5 hp scroll compressor, TXV, evap & cond coils & F/D. Two motors - one for air over the condenser/compressor and the other for drawing air over the evap coil and into...
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    How to tell if you are low on refrigerant

    We have a relatively simple HVAC system where we have thermocouples in various locations, pressure gauges and a sightglass.

    Is there a way based on pressure and temperature to determine if there...
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    Another Recycling Question

    Is it better to NOT use a recycling unit on R-134a or some other blend? Is it only really good for something like R-22? My thinking is if the blend has leaked, it's not really the correct...
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    Thanks for the helpful response. Good...

    Thanks for the helpful response. Good information.

    - Andreas
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    We repair air conditioning systems pulled off...

    We repair air conditioning systems pulled off locomotives. They are not in the best condition when they come in. The question I should have asked early on was what do you think is acceptable to put...
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    Recycle

    Recycle
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    Recommend a Recycling Unit?

    Does someone have a recommendation on an R-22 Recycling Unit to be used on about 40 units per year? The charge is 10 lbs.
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    Reply

    Thanks for your responses. Any thoughts are welcome.
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    Detachable HVAC System

    I work in locomotives, and we are looking at using a split system like you would see in a house. That is, the condensing box would be 10-15 feet away from an evaporator box. The question is how...
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    Sprayed on is what I was thinking. I'm trying to...

    Sprayed on is what I was thinking. I'm trying to cost-reduce the unit, and I was thinking spray-on may be cheaper from a material standpoint and take less time and effort to apply. Maybe there's a...
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    Blown-in Insulation

    We insulate an HVAC box with 1/2" black foam insulation with adhesive backer as shown in the attached photo. Do you know if a blown-in insulation would serve as an effective cheaper alternative?
    ...
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    Thanks

    Thanks for the information. Because we are in a pinch and the vendor cannot turn something around quickly enough, we will use the three pieces. Have a good day!
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    Application

    It is used in railway HVACs
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    The correct attachment

    I apologize for putting the wrong attachment to my previous email. This is the correct one.

    3350
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    Questionable Stainless Tube Bend

    3349

    We are in a time crunch and need the above part. Do you think this stainless steel having a ripple in it be acceptable for installation? It will be on the suction accumulator or low...
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    Thanks

    Thanks for your answer. I finally did get through to a salesman and they said not to mount it rotated 90 degrees.
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    Application

    We are re-building an old rooftop locomotive HVAC. It had an old Chrysler automotive compressor with the suction/discharge tubes coming out horizontally. We need the tubes to be horizonal to fit...
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    Automotive Compressor - Rotation Acceptable?

    We are re-building an HVAC and putting in the Seltec TM-15HS automotive compressor shown in the attached file. Do you think we can rotate the compressor 90 degrees so the suction and discharge are...
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    Thanks

    My buddy looking for an answer apparently found it on his own. In his words.......

    I found the answer this morning and
    sent it to my dad. The answer depends on many different variables but I...
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    Heat Pump Capability

    Say you have just bought yourself an Amana window mount heat pump which performs both heating and cooling operations. What volume of space can you expect it to cool or heat?

    I believe the most...
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    It has a thermostat and will not run all the...

    It has a thermostat and will not run all the time. It would be a couple of weeks before I could get a picture. Unfortunately they are doing plant inventory and all the HVAC units are cleared out.
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    This is an HVAC for locomotives and the...

    This is an HVAC for locomotives and the compressor is a TM-15HD. We run about 1600 - 2000 rpms on the compressor when maximum is 6000 rpms. (Why not 3500 rpms?, I don't know). I have learned the...
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    System Info

    Andreas here. I have looked into the system further....
    - The compressor is manufactured by TAMA and the model no. is 488-45021. R134a.
    - There are no pulleys. The motor shaft is tied to the...
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    Would reducing the refrigerant charge (in lbs)...

    Would reducing the refrigerant charge (in lbs) help?
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