Carrier Screw Chiller line injection line

[pbcd]

I have a R-22 Carrier Screw Frame 4 chiller. Model number 23XL4343ED40 (300 tons). What is the purpose of the Liquid Injection Line that originates from the bottom of the condenser and terminates at the First Closed Lobe of the screw?

[mdp]

Compressor cooling during part load operation

[mdp]

http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/23xl-2ss.pdf

You might find this publication helpful

[pbcd]

mdp
Thank you for your reply and the link. I have the publication already, but thanks for your effort.
I thought the motor cooling was only accomplished by the "Motor Cooling Supply" line which originates from bottom of the condenser (FLASC chamber)and terminates at the motor. The "Liquid Injection Line" terminates at the compressor lobe port.

[double bubble]

Mdp or pcp mpc said compresser cooling not motor cooling . We do somthing similar and callit oil cooling .

[pbcd]

double bubble

You're right, mdp did say compressor cooling.

[double bubble]

Yeah I was just goofin around messing with your call signs. Good luck