Hi All, I'm not expert in Engineering Work,

Currently I faced a big problem regarding liquid unable to become vapor during suction and some liquid will return to compressor.

This screw compressor was a 90HP's Chiller Medium Temp Compressor with Old Multi-System and MODIFIED to 150HP's Freezer Low Temp Compressor with 4 Blowers Currently, Temperature can up to -25'C.

Will this problem link to orific, expansion valve or suction accumulator?

Hope everyone could lend me a hand to solve this problem.

Thanks...