Does anybody have info on Mcquay Screw compressor. Model SAL175QA13DA Im lookinin for compressor piping configuration. Internal operation on a ALS090 R-22 Screw chiller. If you could help Thanks Could not find it on my Mcquay CD.
What do you want to know? This is Stargate-rotor compressor with suction on side discharge at top. liquid injection on side mid compressor econ.at rear of comp.oil cooler at bottom front and dual slide valves in 45*from each other. has pump at rear on rotor.oil sightglass on top mid way.orignal set up across the line start with no oil seperator.retro cek kit softstart and oil seperator.wasn't the best and they were not lasting very long.Although I did come across one that had about 8 years of operation with decent amount of runtime although in my experience wasn't common.New mcquay comp totally different but ALS series didn't fare to well for Mcquay. So far the new style of Mcquay screw AGS ok I just dont care for microtech 2.(coral control).Still prefer Trane RTAA any day.
It is necessary to replace defective compressor and install new one. Vendor sent new unit without oil, absolutely dry.We have no information about working of oil circuit. (Through what orifice fill the circuit? What we have to see in oil sightglass when compressor is working? How does oil circuit works?)
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Last edited by jpsmith1cm; 05-01-2013 at 08:18 PM.
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Last edited by jpsmith1cm; 05-01-2013 at 08:18 PM.
Reason: non AOP Pro Member
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