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Ahem.............gents, a little tmi.....

trane purge

please take a picture and let us see the chiller and purge!!!!

Just to say Thanks to everyone in the forum, I finally made the unit run at 100%, water set temp reached in 20 min, so the customer can start back operations on Jan 3 as programed.
I have put the order for the parts to fix the purge pump, new set of sensor and high capacity filter cores, the shut off valves recommended by Nuclchiller are installed, and the float as been verified and working.

Hope all of you have a Happy New Year and if you need anything within my reach and capability just send me a mail and will be happy to help you.

For what it's worth, it's time to get some help from someone that knows the operation of the chiller. You and the customer will come out money ahead in the long run.

Originally Posted by jayguy

between this hose and manually jumping out the switch, i would say that you will also need a lot of refrigerant.

This is true. If you must bypass the orifice, use a manual valve with the bypass hose. Use your manifold gauge set or better yet, use a small ball valve with a swivel quarter inch female flare on one end and a quarter inch male flare on the other. I had one that I think was made by Yellow Jacket. Bought it off the rack and you only need one hose. Then you can throttle it down so less refrigerant is lost.

Originally Posted by deltap10

Install bypass hose or remove pumpout orofice for temporary faster air removal.

between this hose and manually jumping out the switch, i would say that you will also need a lot of refrigerant.

Install bypass hose or remove pumpout orofice for temporary faster air removal.

Any other idea I can use??


Pocket screwdriver wedged in beside the manual pumpout switch to hold it in works a treat

Good morning every one, looks like all the ideas, comments and info point to the suction sensor on the purge, I'm on site now and you were right the sensor is not reading but the lvl sensor is working fine.
As I say early in the chat I haven't been able to find a sensor that fits or with similar Ohm readings.
I'm going to proceed to jump the pump compressor and try to control the air release pump manually in 10 to 20 min intervals of opperation.
Any other idea I can use??

OP says the purge wont start a and a few posts later says the sight glass is not full. The purge is held out of operation if the level sensor switch is open. Sounds like a stuck switch or a bad connection at the switch and at J3 5-6 at the board!

I've seen an incorrect sensor reading (can't remember if it was high or low) due to corrosion on the purge module where the sensor leads are connected. Cleaning it corrected it, but only temporarily. I ended up replacing the module. The corrosion was fairly extensive in that area.

Originally Posted by graham

Ok lets correct the confusion , there is a float in a purifier but its there only as a safety cut out not as a control float to dump the liquid back into the chiller like a Redi-purge . the purifier is a gravity system and goes condenser to condenser . Redi goes codenser to evap .
Sorry for the confusion .

No problem. After reviewing this thread, I see where I accidently used the phrase "float valve" myself once. Oops.

Both the purifier and the earthwise purges have liquid level switches. For the switch to fail in the high-level position, the level had to have been high at some point. If the valves are all open, a high level isn't normal.

A reading of 213 degrees sounds like a shorted sensor or a failed purge module. More likely a sensor. The checkout procedure is in PRG-OM-6A. The suction temp. sensor is a screw-in 10k ohm @ 77 degrees F ntc sensor. If you can get one of the other ones to make good contact on that little suction line, and you can insulate it very well, it will work temporarily until you can get the factory sensor.

This is the opinion of some guy on the internet.

if the temperature of the compressor suction drain unit does not drop to 18 ° f
eject pump does not activate the float is to avoid unnecessary refrigerant is expelled. if any temperature sensor is out of range does not start the purge unit operation

Wolftre you have mail!!!!

Originally Posted by Nuclrchiller

Graham, are you sure about about that float switch? I just reviewed SB-32A and it shows the purge module with a "Liquid Level Sensor" input.

Ok lets correct the confusion , there is a float in a purifier but its there only as a safety cut out not as a control float to dump the liquid back into the chiller like a Redi-purge . the purifier is a gravity system and goes condenser to condenser . Redi goes codenser to evap .
Sorry for the confusion .

Originally Posted by Nuclrchiller

Ok, Wolftre, thanks. And again, I would install those valves first. I believe you will find life will get much easier around this chiller when you do. And no need to apologize for your English. It wasn't until then that I suspected English may be a second language for you.

It's ok but now back to bussines, I have just found that the Purge suction temp sensor is not working since is reading 213F, again there is no spare part locally than I can reach to fix my purge pump so it takes me back to square one, do you think a sensor from another unit with similar resistance readings may help?

Ok, Wolftre, thanks. And again, I would install those valves first. I believe you will find life will get much easier around this chiller when you do. And no need to apologize for your English. It wasn't until then that I suspected English may be a second language for you.

Originally Posted by Nuclrchiller

Is the purge info read on its own small UCPII style control panel, or is read on the chiller's UCPII control panel? This will probably be the last of any questions about what purge it is. Although, I make no promises.

The purge unit has no UCPII panel is commanded by the Chiller panel

Is the purge info read on its own small UCPII style control panel, or is read on the chiller's UCPII control panel? This will probably be the last of any questions about what purge it is. Although, I make no promises.