![background image](http://html1.mh-extra.com/html/gardner-denver/welch-crvpro-series/welch-crvpro-series_operation-manual_3727687024.webp)
Installation and Operation
20
P1700040
CAUTION!
The motor has PTC inside, the user must integrate the GRB temperature control module into
the three phase power station and connect with the motor PTC. Once the PTC sent out
temperature rise signal to the power station, then the power station will cut off the power
supply and the user should restart the power manually after pump cooling down.
If you don’t
want use PTC, appropriate motor protection switch also can realize the motor protection
function.