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Thread: Loosing Oil
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09-07-2007, 10:54 PM #1
Loosing Oil
...Hi all..
I have problem,a big problem,with SMC180...
...he consume every 3 day ten litres...
...I put new cilindres and everythig else new and put in him sythentic oil,called "ZEROL 350"....
...I have on suction side 2 bar pressure and 10 deegres temperature....
....on discarge side I have 10 to 12 bar (depends of outside temperature) and 120 to 140 deegre temperature of gas on discarge....
...filters and returning oil from oil separator is OK...
...is there posibility that this oil is not for that temperature...
...thanks ....Last edited by Sinke; 10-07-2007 at 09:10 PM.
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09-07-2007, 11:12 PM #2
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09-07-2007, 11:59 PM #3
Re: Loosing Oil
Hi Sinke
what about the oil return line from the separator to the compressor, is this working correctly. Also you discharge temperature is a little high, 120 deg c would be high enough.
Please let us know all the temperatures and pressures and we will try to help.
Kind Regards AndyIf you can't fix it leave it that no one else will:rolleyes:
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10-07-2007, 04:39 AM #4
Re: Loosing Oil
Hi.
I will also say that you must check the oil return line.Often it will be filled with dirt especialy if running on ammonia and the plant is old.i belive there is a filter also
The oil will proberly be in seperator or evaprators.
HGS
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10-07-2007, 03:00 PM #5
Re: Loosing Oil
I had the same problem with an SMC 100 years ago. Check that your oil seperator is returning. Is there a sight glass in the oil return line??. Is the compressor running unloaded a lot. They tend to throw oil more when they are unloaded. What oil pressure are you running. Too high will tend to throw over the oil. These Sabroes tend to run at high speed, so everything must be spot on to minimise oil carry-over.More info will mean we can give you more help.Other than cylinder liners, what else did you replace??.
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10-07-2007, 08:45 PM #6
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10-07-2007, 08:59 PM #7
Re: Loosing Oil
...Oil is returning from separator line,and filter is clean also,there is no glass on return line...
....Compressor is going 24 hours a day and he is almoust always full charge...
...Oil pressure is 4 bar like in sabroe books...
...I replace almoust everything(I must find dictionary for so many spare parts)the mashine is from 1978 year,and I have five more,but they are in perfect condition,but they don't work at same pressure and temperature...Last edited by Sinke; 10-07-2007 at 09:13 PM.
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10-07-2007, 11:06 PM #8
Re: Loosing Oil
So what you are saying is the one you worked on is running with lower pressures than the other ones?
What are the pressures, temps, what refrigirant and setpoint?
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12-07-2007, 04:17 AM #9
Re: Loosing Oil
[quote=Sinke;72340]...Hi all..
I have problem,a big problem,with SMC180...
...he consume every 3 day ten litres...
Hi Sinke,
Please check for your running hour for overhaul your compressor. You have to check the cylinder sleeve clearance and then also you have to make sure that not much oil carry over with do mechanical test run for your compressor.
Have you follow the maintenance program from sabroe?
Oil separator also check for the performance.
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12-07-2007, 11:14 PM #10
Re: Loosing Oil
Hello Sinke the oil loss could be due oil foaming in the sump,or slightly worn bearings.for the discharge temperature it could be that the discharge vavle seats are worn and letting back.i say this because i had similar problem with a 8 cyclinder gram and when i fully overhauled it ,with in about 3 minutes it bought back about 70 litres of oil .
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13-07-2007, 03:31 AM #11
Re: Loosing Oil
Another source of excessive oil usage in a recip is worn or cracked rings. How many hours on the machine since the last top-end job and/or major overhaul?
Ken
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13-07-2007, 08:36 PM #12
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13-07-2007, 08:47 PM #13
Re: Loosing Oil
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13-07-2007, 08:55 PM #14
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13-07-2007, 09:16 PM #15
Re: Loosing Oil
Originally Posted by Sinke
What is the suction and discharge superheat on the problem compressor?If all else fails, ask for help.
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13-07-2007, 10:16 PM #16
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