Johnson Controls SABROE ComPAC, Operating Manual

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Operating manual - ComPAC
48/56 011769 en 2020.03
Operating instructions
In the period after start-up and at low-load operation, the oil recovery system will return more oil
to the compressor than during full load.
At part-load operation, the oil will settle easier because of less boiling in the evaporator.
Drop in oil temperature
Cause Solution
Wet suction gas due to too high R717
charge
Reduce charge.
Wet suction gas due to fluctuating load Check secondary system.
Wet suction gas due to quick changes in
compressor capacity
Adjust settings for load/unload compressor capacity
in Unisab III.
Too much compressor cooling
Reduce water flow or temperature to compressor
cooling. See compressor manual for more
information.
5.6.3 Testing of chillers
Chillers supplied by Johnson Controls Denmark have been function and performance tested, as
far as possible.
A performance test consists of simultaneous measurements of cooling capacity, power consump-
tion and condenser capacity.
It is not a simple task to measure performance. High quality measuring and logger equipment is
required to make reliable and accurate measurements. Contact a Johnson Controls representa-
tive if a performance test is needed.