Compressor is running and in a constant vacuum

[bwd111]

I have a carrier with a carlye compressor and I put my gaugues on and its in a vacuum while running? Compressor runs for 2 minutes then shuts off. The second compressor is running just fine. Any help would be great.

[yellowirenut]

I have a carrier with a carlye compressor and I put my gaugues on and its in a vacuum while running? Compressor runs for 2 minutes then shuts off. Thye second compressor is running just fine. Any help would be great.

TONS more info needed

[Chris_Worthington]

TONS more info needed

:ditto:

[bwd111]

Yes true! But if the unit was running perfect one day then the next day systems goes into a vacuum you can't get proper suction and discharge readings. I dont want to hold in contactor and try to get readings when unit is not running proper and risk more damage to the system.

[kelvin]

Yes true! But if the unit was running perfect one day then the next day systems goes into a vacuum you can't get proper suction and discharge readings. I dont want to hold in contactor and try to get readings when unit is not running proper and risk more damage to the system.

What are the gauge pressures before it starts? And what are the readings when it starts before it shuts down? What size is the unit? It seems to be undercharge but needs more info.

[dunkman]

Leak, undercharge, restriction, bad solenoid valve, take your pick.

[kelvin]

Leak, undercharge, restriction, bad solenoid valve, take your pick.

It is not restriction because it only run for 2 minutes. But then I'm also guessing:whistle:.

[dunkman]

Probably runs for the 2 minutes because it has LPCO bypass timer.

[RoBoTeq]

Keep letting that compressor go into a vacuum and you'll wind up having a nice mess on your hands. When a compressor goes into a vacuum, the electrical current inside of that compressor starts arcing all over the inside of the compressor, superheating the compressor oil. If and when one of the wire connectors in the fusetite plug burns through and lets air (oxygen) into that compressor, you will have oxygen, vaporized fuel and ignition......BOOM!!!

As the fusetite blows out of the compressor and superheated burnt oil blows out, it makes quite a mess of the unit and whatever is near the side of the compressor that blew.

[bwd111]

Pressure is 5 psi the starts to go into a vacuum. Did replace the valves and gaskets last year on the 15 ton compressor. Also the oil in the sight glass foams as we all know the refer is boiling out of the oil. I'm thinking even thou we torqued the blots to factory specs there could be a leak taking the pressure to a vacuum.

[dunkman]

So it's equalized at 5 psi on hi & lo side then goes into a vacuum?

[redwhitekat]

sounds like a restriction to me, check your metering devise, or anything else that can block the flow.

[jimj]

sounds like a restriction to me, check your metering devise, or anything else that can block the flow.

:whistle: Your kidding rite? Standing pressure is 5 psi on low and high and you think you have a restriction causing it to go into a vacuum?

Time to do a leak check!

[dunkman]

:eek2:

[slugger1]

sounds like your out of gas. but i might have missed somthing when you say pressure is 5 psi is that the suction or equalized? is this a aqua snap with a exv? need a little more info good luck

[timebuilder]

Model? Serial?

If you only have 5psi when the compressor is at rest for say, ten minutes, then I'd pressurize with nitrogen after opening the disconnect, and start looking for how the gas got out.

[bwd111]

As of this morning the psi for hi and lo is 105.7 psi. When i turn the unit on psi starts going down fast. It must be internal and not an atmosphere leak. Going to pull the valve plate of as this is an semi hermetic caryle comp

[yellowirenut]

As of this morning the psi for hi and lo is 105.7 psi. When i turn the unit on psi starts going down fast. It must be internal and not an atmosphere leak. Going to pull the valve plate of as this is an semi hermetic caryle comp
wait what??

we could help a lot if you give us the info in a formal way

standing pressures -
Hi side/suction side
working pressures -
Hi side/suction side
Model and serial of said unit
Amp draw?
Is there any pressure equalization?
How long does it take?

[Chris_Worthington]

As of this morning the psi for hi and lo is 105.7 psi. When i turn the unit on psi starts going down fast. It must be internal and not an atmosphere leak. Going to pull the valve plate of as this is an semi hermetic caryle comp


All I have to say here is WOW :eek2:

and perhaps :whistle:

I am assuming you are building engineer taking on a project that is perhaps beyond your capabilities and that you might want to consider contacting a Professional Commercial contractor..... Prior to causing further major damage to your employers machine??

:.02::.02::cheers::cheers:

[Nuclrchiller]

Hard to stand by and read this one. Since you haven't already volunteered the info that Yellow asked for (can't or won't), I gotta say go with Chris' suggestion.

[bwd111]

All I have to say here is WOW :eek2:

and perhaps :whistle:

I am assuming you are building engineer taking on a project that is perhaps beyond your capabilities and that you might want to consider contacting a Professional Commercial contractor..... Prior to causing further major damage to your employers machine??

:.02::.02::cheers::cheers:I would yes get the info but when the unit is running towards a vacuum getting the follow besides the amp draw are not relevant. It just cant be done correctly. Amp draw is 9 amps.standing pressures -105 psi as of this morning
Hi side/suction side- 105 psi then drops all the way to a vacuum if I let the unit run
working pressures -
Hi side/suction side
Model and serial of said unit-Carrier- will get model -comp make and model-Carlyle model- 06da3280c3600
Amp draw? 9 amps
Is there any pressure equalization? Yes when unit is off
How long does it take? Takes less than a minute to go from depending on the ambient temp to go into a vacuum.

Did find one of the gaskets for the valves plates were different then the rest of the other gaskets covering one of the valve plates holes. But vavle plates were changed last year and ran great all spring and summer and part of the spring til last week. I recovered 16.6 pounds of refer compared to the 16.8 pounds on the data plate so im going to rule out a leak. Again I just dont fell right operating the unit when pressures are droping in to a neg pressure operation to try and get the following info.

[timebuilder]

Now you get to find the restriction.

[bwd111]

Still want to know why both the hi and lo went into an equlized vacuum. I know I will fix the problem but want to know why this happened.

[bwd111]

exv

[just_opinion]

IS THIS THREAD CONSIDERED TO BE A "DIY" ??? Mr. global moderator ???? :whistle:

[dunkman]

Call me a jerk but I know I'm tired of it.

[bwd111]

Me too. Thread is dead.

[Chris_Worthington]

Me too. Thread is dead.

Thread Closed Per OP :putergreet: