Strange sound in centrifugal?
Strange sound in centrifugal?
(OP)
Hi'
I have a 2 stage carrier centrifugal 3000ton(17fa599/drive murray turbine)
Over the summer it developed a muffled "sound".
vibration analsis,alignment and refigerant sample were taken.turbine bearings/thrust were ALSO inspected.
All were within limits except refrigerant(water was found/500ppm). The oil cooler was leaking and is in the process of being repaired along with reclaiming the charge.
Would 500ppm/water cause a compressor to sound different,with no lose in capacity or exccesive head press.? Also what would be an acceptable ppm of water in the charge?
Thank you, I appreciate your comments.
I have a 2 stage carrier centrifugal 3000ton(17fa599/drive murray turbine)
Over the summer it developed a muffled "sound".
vibration analsis,alignment and refigerant sample were taken.turbine bearings/thrust were ALSO inspected.
All were within limits except refrigerant(water was found/500ppm). The oil cooler was leaking and is in the process of being repaired along with reclaiming the charge.
Would 500ppm/water cause a compressor to sound different,with no lose in capacity or exccesive head press.? Also what would be an acceptable ppm of water in the charge?
Thank you, I appreciate your comments.





RE: Strange sound in centrifugal?
CFC-11 - 44 ppm
HCFC-123 - 470 ppm
HFC 134a - 600 ppm
so looking at these perameters it's very possible that with 500 ppm the total chemistry change in your refrigerant could very well created sound you were hearing.