Hypertherm HPR800XD Auto Gas Rev.2 - Manual (Page 249)

Maintenance
HPR800XD Auto Gas – 806500 5-35
5. Turn OFF the pump immediately when the coolant flow slows significantly.
6. Reconnect the return coolant hose and make sure the 3/4 inch female NPT connection is closed.
4. Turn ON the pump manually, using the manual pump control button on your CNC screen. The valve in the chiller
interface console will open and coolant will drain out of the coolant hose.