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Originally Posted by CHILLERSVCMAN

After I went back and re-read - shut and valve off purge . Pressurize and leak check . I will not quess where the leak is ; but will bet !

Solenoids?


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Originally Posted by CHILLERSVCMAN

After I went back and re-read - shut and valve off purge . Pressurize and leak check . I will not quess where the leak is ; but will bet !

Yep, the first thing that needs to be done is verify the purge is working properly. No leaks, pumpout compressor working properly, solenoid valves working properly, etc.

After I went back and re-read - shut and valve off purge . Pressurize and leak check . I will not quess where the leak is ; but will bet !

It has non-condensables . I would suggest monitoring the purge for 72 hrs . What is serial number of chiller and purge ? There are things one can do ; need more information. ( I am NOT a salesperson )

Yes the chiller is idle, it hasn’t been running and yes the suction line starts to frost up. The suction line drops to about 16*F while pumpout Pump is running.

Sorry about not starting a new post. The chiller that I’m talking about has not been running.

Any One can jump in at anytime here : THE PURGE IS AN OPERATIONAL DEVICE : NOT A COVER FOR A LEAKING MACHINE IN NEED OF REPAIR . It is too early in season to look for the purge to save one from " SINKING "

Sanchez - First off,you blind sided the original post. You should have started a brand new post. You have more non-condensibles then the purge can cycle on. If it is only getting non-condensibles to the purge heat exchanger the temperature will continue to drop to anywhere from 5*F to -15*F. It will stay there until it starts picking up refrigerant vapor.

Originally Posted by Nuclrchiller

Probably an excessive amount of air. But, it could also be an indication of a purge unit malfunction.

Verify that your suction temperature sensor is correct. Usually, after running a short while with temperature that low, frost and/or ice will begin to form on the compressor shell at the suction line connection.

Verify that chiller does indeed have air in it.

If the chiller has been idle, and has a leak, and the purge has not been operating, it is possible that the chiller could have so much air in it that could take several hours (even overnight, or more) to remove it, especially if you're trying to get it out with the chiller idle.

And it could also take hours for it to even begin raising the purge compressor suction temperature, and start cycling the pumpout pump.

Probably an excessive amount of air. But, it could also be an indication of a purge unit malfunction.

Verify that your suction temperature sensor is correct. Usually, after running a short while with temperature that low, frost and/or ice will begin to form on the compressor shell at the suction line connection.

Verify that chiller does indeed have air in it.

If the chiller has been idle, and has a leak, and the purge has not been operating, it is possible that the chiller could have so much air in it that could take several hours (even overnight, or more) to remove it, especially if you're trying to get it out with the chiller idle.

What will cause the suction temperature to drop, when the purge pump is running? I’m having a problem where if I turn on the purge, the condenser comes on then, the suction temp starts to drop. Once suction temp drops below 18*F. The purge pump comes on. This is suppose to get all the air out and the suction temp should start to rise. My suction temp is not rising, it’s actually dropping while the purge pump is on.

If the sight glass is green it's good. If it's red watch out! The pressure transducer on the purge compressor suction has detected a low saturation temp! Lol!

Maybe hes still trying to figure out the difference between water and refrigerant ?
Did I miss something I thought that core drier was a secondary subcooler with tubes in..... maybe that's where the water comes from

Originally Posted by chillerscrub

To the original post, you may want to find something else to do with your life if you think water is in your liquid line sight glass lol. But seriously, saturated suction temp drops (on the purge pump refrigeration cycle)....purge pump is engaged, saturated suction temp rise (on purge pump refrigeration cycle) the pump should disengage. Also, if the liquid line site glass is flashing liquid your purge pump should cycle off meaning that the purge pump barrel is now condensing vapor refri into liquid. Thats about the simplest way to put it. Kicks on at about 25* sat suction and kicks off on temp rise..

Three year old post.

To the original post, you may want to find something else to do with your life if you think water is in your liquid line sight glass lol. But seriously, saturated suction temp drops (on the purge pump refrigeration cycle)....purge pump is engaged, saturated suction temp rise (on purge pump refrigeration cycle) the pump should disengage. Also, if the liquid line site glass is flashing liquid your purge pump should cycle off meaning that the purge pump barrel is now condensing vapor refri into liquid. Thats about the simplest way to put it. Kicks on at about 25* sat suction and kicks off on temp rise..

I think I remember now. Is that the song that keeps saying "Ah oooooo"? Be glad you're reading that pathetic attempt at singing, and not hearing me try to sing it.

Originally Posted by Nuclrchiller

I admit I've never had a reason to bypass it and find out. That's why I said "Trane says...". I wonder if you're just pointing out how I misspelled "removal"? BTW Jay, your new sig line confuses me....

if i pontd oot evreebuddies miispelllled werds, i wood bee her al dai!

Song lyrics from Werewolves of London by Warren Zevon

I admit I've never had a reason to bypass it and find out. That's why I said "Trane says...". I wonder if you're just pointing out how I misspelled "removal"? BTW Jay, your new sig line confuses me....

Originally Posted by Nuclrchiller

...And there is no bypass available for large amounts of air. The restrictor is larger and already passes more volume than the Purifier Purge restrictor does. Trane says removing (or bypassing) the restrictor on the EarthWise causes the greater loss of refrigerant without providing an appreciable increase of air removable...

there isn't a FACTORY installed bypass. i have bypassed the restrictor in the past on these as well and they will remove much more air than you think...i don't think that they will remove nearly as much refrigerant in bypass mode as the older purges did in bypass mode.

We have four total chillers.

This chiller in reference is a 120-ton Trane CVHE from 1984 with the big black box and the four vertical gauges on the left hand side kind of like the 800-ton Trane I was talking about in another one of my threads.

The 120-ton has a big leak in it, and as of today, we condemned it; as it will be replaced along with our 800-ton in December of this year.