Hi All

I have not been doing this long so apologies if this is very basic to most of you, but anyway my question is:

I was wondering if anyone could tell me the correct method of carrying out a compressor efficiency test on a split system.

At college we did this on a rig but there was service valves available which aren't the same type on the splits.

Also am I correct in saying that both the service valves on a split where the install piping connects are actually both on the low side???

Any advice will be greatly appreciated.