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Earhwise Purge issues
Hi.
Has anyone had pumping issues on the new-ish style purge.
One chiller has 100hrs and the carbon tank was saturated and trane wrote off the complete purge unit.
I have another chiller that had a leak, (that was repaired) and it just seems so slow to pump out, I’m wondering if these inbuilt carbon tanks are slowing down the pump out process. Put your face up against any old style purge, and you can feel the pressure no problem( before or after the old style carbon tanks).
The new style even with the evap return line open or closed, you can barely feel anything, while my purge is constantly pumping and the purge suction sensor is still reading sub zero Fahrenheit.
Tomorrow I’m planning to isolate the evap return line/solenoid,cut the pipework and bypass the inbuilt carbon tank and use the old style replaceable tank. Just to see if I can get the air out in a timely manner.
Would be nice to know if anyone else is noticing this.
Much appreciated.
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Evap return line is used in regeneration. Did you check the orfice make sure solinoids are opening. Valves to purge are open.
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How much air is in machine?
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Hi
All solenoids are operational, all lines checked for blockages, blown through with OFN.
There is a fair amount of air yes.
But in 24 hours the suction temp hasn’t moved and it’s pumping for fun, as I said above, my concern is these regen carbon tanks either from moisture saturation, or just the internal make up is just preventing the flow I’m used to seeing on any other purge.
As it happens, the newly purchased complete purge has a newer style pump than the originals...is it because the new regen tank system is causing the old style pump outs to a fail, or not able to remove the air in a timely manner.
I’ll let you know my finding after bypass the regen.
Baring in mind, this chiller only had 150 mins purge time on the clock, and all the chillers are barely 5 years old.
Thanks.
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Did you verify the pump is pumping?
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Originally Posted by
Bermydiver
Hi
All solenoids are operational, all lines checked for blockages, blown through with OFN.
There is a fair amount of air yes.
But in 24 hours the suction temp hasn’t moved and it’s pumping for fun, as I said above, my concern is these regen carbon tanks either from moisture saturation, or just the internal make up is just preventing the flow I’m used to seeing on any other purge.
As it happens, the newly purchased complete purge has a newer style pump than the originals...is it because the new regen tank system is causing the old style pump outs to a fail, or not able to remove the air in a timely manner.
I’ll let you know my finding after bypass the regen.
Baring in mind, this chiller only had 150 mins purge time on the clock, and all the chillers are barely 5 years old.
Thanks.
Have seen troubles with solenoids being plugged up, new ones are coming out in stainless.
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Originally Posted by
JEF1980
Did you verify the pump is pumping?
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Throw a handheld gague on the suction side if the pump. Should pull 15" or so.
-----Stop, step back, relax and have another go at it.-----
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I’ll let you know tomorrow....
I imagine I won’t get that all the time the discharge is being blocked by the regen carbon tank, I may once I bypass the tank.
Have you seen the new pump? As I said above, funny that they have changed the pump, considering I’ve never lost a pump,(redipurge or any other) and that’s with systems with decent sized leaks. We have three 1000ton chillers and this is the 2nd one with issues.....
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It should pull down with carbon tank in place if it working correctly.
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Originally Posted by
BennyD
Throw a handheld gague on the suction side if the pump. Should pull 15" or so.
They should pull minimum 20” or more . If its not pulling 20” it needs replacing or rebuild kit . .
Also check solenoids for 100% closure it could be sucking air in when it cycles off ?
The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
and yes it still gives me goosebumps
You bend em" I"ll mend em" !!!!!!!
I"m not a service tech, I’m retired ….I used to be a thermodynamic transfer analyst & strategic system sustainability specialist
In the new big shop , greasin', oilin' . tweakin' n shinin' !!
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I appreciate your opinions gents.
But you’re saying a relatively new chiller purge system can’t pump out because two solenoids are partially blocked, one before the pump and one after(not including the regen solenoid) are blocked....
As you may know, all the pipe work is brazed, with no service ports to check. However I’ll find a way and inform you of my findings.
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Maybe your pick up line is blocked and its not getting refrigerant to the purge so it will be in constant pumpout .
The toy chest is officially full ... I got a new toy..... 2007 Aston Martin V8 Vantage
and yes it still gives me goosebumps
You bend em" I"ll mend em" !!!!!!!
I"m not a service tech, I’m retired ….I used to be a thermodynamic transfer analyst & strategic system sustainability specialist
In the new big shop , greasin', oilin' . tweakin' n shinin' !!
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Originally Posted by
Healey Nut
They should pull minimum 20” or more . If its not pulling 20” it needs replacing or rebuild kit . .
Also check solenoids for 100% closure it could be sucking air in when it cycles off ?
True. 20", maybe a touch more. When I see it below that, say approaching 15", I call it out. That varies by customer and how critical the machine is. I have a few critical machines with no backup. Below 20", it get rebuilt.
For the OP, have you pressure tested the purge?
-----Stop, step back, relax and have another go at it.-----
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Has this new EarthWise Purge ever worked correctly? What style purge did it replace? If it was older style (which had different piping to the chiller), I'd verify proper installation. Make sure the exhaust line and regeneration line didn't get mixed up. I realize this sounds absurdly basic, but I believe that would be more likely than a design problem. It's also my first thought on any new install. Especially by others.
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Good evening.
Well, I can tell you there were no leaks within the purge, all solenoids clear, no blockages in the lines. Yet it could still barely exhaust!!
20” on the suction side, so the pump is sound.
So obviously I bypassed the regen tank and hooked up the old style replaceable tank. Now it can exhaust just like a purifier purge and within hours I could see the system pressures drop.
Happy days!