Delta P of Evaporator

[ishtiaq ahmad]

1 If Delta P across Evaporator Reduces from 5PSI to 2PSI in Winter season when the A/C load is light(only 1 circuit of Chiller is Running),then Will it Result into Liquid Flooding back into Screw compressor?
2 If Delta P across Evaporator increases to 6-8 PSI in Summer Season when the A/C load is too much then what will be the Effect on Screw compressor.
3 Will liquid Flood back into compressor if capacity control Mechanism of Screw compressor is stuck?

[frank]

Your Expansion Valve should automatically regulate the refrigerant into the evaporator to prevent liquid flood back to the compressor, irrespective of the pressure drop through the evaporator, based on the suction superheat if the refrigerant charge is correct.