THIS KIT IS FOR 9611 AND 9531 WCU WITH 1 PUMP. KIT IS NEEDED WHEN REPLACING GRUNDFOS CHI 12-20 PUMP WITH GRUNDFOS CM 10-3 PUMP.
EXCEPTION! ACS1000W DRIVES WHICH HAVE LEFT THE FACTORY BEFORE THE END OF 2003 ARE NOT COMPATIBLE WITH REBUILD-KITS. INSTEAD THE COMPLETE WCU MODULE NEEDS TO BE REPLACED. PLEASE CONTACT MV AC SUPPORTLINE IN SWITZERLAND FOR FURTHER DETAILS AND TO VERIFY IF THIS APPLIES TO YOUR DRIVE.