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  1. Using a larger filter drier and not adding refrigerant

    I was told that if you use a larger filter drier and not add refrigerant to compensate that the drier will act like a small evaporator! Has anyone heard of this or is this a myth?
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    Does soldering the cap tube to suction line

    Sub cool the liquid refrigerant? Took a class on friday and was told it increases effciency, prevents slugging and relives stress on the cap tube which I say that has no bearing on relieves stress on...
  3. Thread: Potential relay

    by bwd111
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    492

    After speaking to former rses president and Norm...

    After speaking to former rses president and Norm Christopher I was told counter emf causes contacts of the potential relay to open
  4. Thread: Potential relay

    by bwd111
    Replies
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    Views
    492

    The operation of the potential relay is based on...

    The operation of the potential relay is based on the increase in back-electro-motive force (back-EMF) or a bucking voltage that is generated across the start winding as the motor increases in speed....
  5. Thread: Potential relay

    by bwd111
    Replies
    12
    Views
    492

    Potential relay

    What cause the contacts of the relay to open? Is it the counter EMF of the motor or current draw of the motor ?
  6. So it is the dome shell and not the compressor...

    So it is the dome shell and not the compressor inside the dome
  7. Debate on where the suction line discharges on a reciprocating compressor

    Is it the dome shell or compressor inside the dome?:gah:
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    Not trick question! Can test contacts if cold...

    Not trick question! Can test contacts if cold control is has correct
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    Cold control I think has lost its charge

    What are the results if a capillary of a cold control has lost its charge? Will the compressor not run or run continuously?
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    Determining factor in relay selecting

    Relay replacement what is the determing factor? Is it the system voltage or start and run current?
  11. When will a capacitor-start compressor fail to start?

    I know this is a basic question but cant remember if its when the cap is open,out of phase or shorted? I know you will hear a hum at times when the cap is bad but I was thinking when the cap is open...
  12. Seems like one but specs call for device that...

    Seems like one but specs call for device that control pressure
  13. What pressure controlled metering device operates

    in response to evap pressure? Is it a cap tube or txv or AEV
  14. Where should you check for subcooling of a domestic refrigerator ?

    or cant you check for subcooiling? Some people have told me between the condenser and the cap tube but then others have said you cant check for subcooling on a domestic refrigerator
  15. Needs some calc help on a pneumatics transmitter system

    I have a given transmitter and it has a range of 0 to 200 degrees. It maintains an output signal of 3 psig at 0 degrees and 15 psig at 200 degrees. What is the output change per unit of controled...
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    That's why I have everything delivered to my work...

    That's why I have everything delivered to my work cause there is always someone there to sign and receive the packages
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    I do a lot of selling on eBay and never have a...

    I do a lot of selling on eBay and never have a problem with USPS shipping to P.O box. FedEx won't ship to PO box.
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    Jim you know those test are hard and to only get...

    Jim you know those test are hard and to only get a plaque where's the wow factor! Give away a great prize with the award and people with talk and that is word of month which as you know the best kind...
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    I just bought one of those tvs at auction last...

    I just bought one of those tvs at auction last Saturday paid 250
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    Sounds great

    Sounds great
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    What if your working on a rooftop ? No shade no...

    What if your working on a rooftop ? No shade no shade
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    Give away a imanifold to the winner of the rses...

    Give away a imanifold to the winner of the rses imperial tool award!! Don't get cheap now. Don't get cheap
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    I totally agree

    I totally agree
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    Get an otter box case for the iPhone cause I know...

    Get an otter box case for the iPhone cause I know if that happens to me the phone is getting threw at a brick wall due to frustration.
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    Imperial should give the winner of the rses...

    Imperial should give the winner of the rses imperial award a imanifold!! That would be a great promotion
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    making a distibutor for a txv

    If the power goes out over night while vacuuming it could suck the vacuum oil into system causing contamination
  27. Replies
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    Update on using 5ton compressor. The old...

    Update on using 5ton compressor. The old compressor was 7.5 and we replaced with 5 ton and used same txv used for 7.5 ton and also used 422d instead of r-22. The system works great as all was need...
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    Well it's locked out at 68. Quick question on new...

    Well it's locked out at 68. Quick question on new compressor. What is the line next to suction line on the compressor ? I have obviously suction and discharge but tube next to auction is that for...
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    Hope you learned something atleast. I did

    Hope you learned something atleast. I did
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    That was the complaint when those who are working...

    That was the complaint when those who are working out get to warm 64-62 was the preferred temp. I need a lock out temp of 68 max
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    Capacity and energy efficiency at low– and...

    Capacity and energy efficiency at low– and
    medium–temperature tends to be lower than
    HCFC-22. If the present R-22 system was
    at its maximum capacity during design
    conditions, additional capacity...
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    the new comp that is designed for r22 is charged...

    the new comp that is designed for r22 is charged with Poe oil. So I think the r422d will be just fine.
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    The 2nd compresser will hard let ever be used due...

    The 2nd compresser will hard let ever be used due to it never goes below 65
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    Yes

    Yes
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    That was his explanation but I am changing out...

    That was his explanation but I am changing out txv. The one compresser will take care of the heat load expect when exercise room is used and temp needs to get down to below 65.
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    Cause we installed another roof top 3 years ago...

    Cause we installed another roof top 3 years ago and there has been some remodel and this trane doesn't have the heat load that it use to. All this trane is for is a lunch room and an exercise room...
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    That I don't know. I have 3 other comps in the...

    That I don't know. I have 3 other comps in the roof that have been on r422d and they are still running great. I am going to open comp and see what the cause was
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    I reversed the leads with no result

    I reversed the leads with no result
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    Next question. The trane is a 7.5 ton comp and...

    Next question. The trane is a 7.5 ton comp and will be replaced with a 5 ton comp but boss says its ok to leave the txv and not replace. What is going to be the result with the second stage comp...
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    I'm with you on that except I charged the...

    I'm with you on that except I charged the compresser with r 422d last year and just bought a new jug as well.
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    Update on trane- I have Reversed the leads to see...

    Update on trane- I have Reversed the leads to see if that would free up comp also I have measure voltage from lead to lead to lead and get 480, I also hit the top of the dome with hammer and again...
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    They are side by side compressors feed off one...

    They are side by side compressors feed off one disconnect. I was going to take power from the running unit and connect to the other unit to see if power was an issue before I got deeper into cause. I...
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    I will try that and update on Monday morning.

    I will try that and update on Monday morning.
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    The compressor next to the one I am having...

    The compressor next to the one I am having problems with has the exact same voltage on each leg to ground and that one is running great. I wanted to compare voltage with the one that is running
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    Yes to ground

    Yes to ground
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    Yes 280 to ground is what I meant. Sorry for the...

    Yes 280 to ground is what I meant. Sorry for the confusion.
  47. Replies
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    460/3

    460/3
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    Comp doesnt even come on and the dome just gets...

    Comp doesnt even come on and the dome just gets hot. Im thinking replacement! thing that gets me is why are the ohms the same and nothing to ground. Usually you get a reading that says the windings...
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    well 279 from com terminal to ground then next...

    well 279 from com terminal to ground then next termnial to ground 280 and next termnial on comp 280.
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    Amps start at 7.3 then to zero. The other comp is...

    Amps start at 7.3 then to zero. The other comp is at 10.24
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