Installation steps1 Mount the WBCA adapter on the wall (4 screws).2 Mount the WFU filter on the WBCA adapter (4 screws).3 Connect the cable of the WBCA adapter to the L1/L2/L3 of the WFU filter. (Cable included)4 Connect the mains input to the L1/L2/L3/PE of the WBCA adapter.11 22311224PurposeThe WBCA bottom connection adapter enables supply connectionfrom the bottom side of the WFU regen filter module mounted ontoit. Check the table on the right for the right adapter type.Adapter type Filter typesWBCA-01 WFU-01, WFU-02WBCA-11 WFU-11WBCA-21 WFU-21, WFU-22ABB DrivesQuick installation guideWBCA-xx bottom connection adapter

ABB WBCA Series Quick Installation Manual