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grant
20-03-2009, 05:09 AM
hi guys , our compressor [stal] keeps cuttling out on low discharge superheat , we have been working on the economiser so think there might be liquid in the line . no alarms tho , anyway thanks guys an keep up the good work

bill1983
20-03-2009, 04:56 PM
please give more details of system, operating pressures and temps of lines, load etc control stategy always useful

tarcau mihai
20-03-2009, 06:41 PM
On low discharge superheat ,mostly you have liquid on suction soo i suggest you to check each line the evap fans ,expansion valves,set point...
Regards Mihai!

US Iceman
20-03-2009, 07:56 PM
Are you using liquid injection for oil cooling?

ah fai
23-03-2009, 05:15 AM
hallo guy.. what is the pressure in psi when evap.temp. is -45c and using r22.......

Grizzly
23-03-2009, 05:54 AM
Hi Grant
My initial thighs are that the system is overcharged.
That does not necessarily mean that the system is overcharged.
But the issue could be with the Economiser level control?
Has anyone "re-adjusted" it?
Anyway you may want to look in that area?
That's assuming that your discharge pressures are normal?
Grizzly

grant
04-04-2009, 08:49 AM
hi grizzly u got it spot on thanks for the help and sorry abbout the late reply ta