View Full Version : York millennium ycch163 rotary screw compressor

01-08-2017, 04:23 PM
I understand the slide valve operation, but I do have a question about when the system is down. On this particular chiller there is no external oil pump to drive the slide back to minimal position for start-up. I can only assume (which I hate to do) that there is an internal spring that forces the slide back to minimal position, or ?? Thanks.

01-08-2017, 04:30 PM
Yes, the spring is forcing unloading.

07-08-2017, 09:57 PM
What's the compressor? Is it the dxs?

If you're having load / unload issues, it's not unknown for the springs to break on these and require replacement.