The coolant pump should not shut off the main breaker in the panel, there should be some other type of protection between the pump and main breaker that should trip or in the case of a fuse, blow first.
If it came as a package, is there any machine wiring details in the manual?
I know from experience the Chinese method of wiring schematic and notation leaves alot to be desired, but usually they include something and if you have anything at all, it should show how it can be checked or corrected.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.