Water continuously flows to drain even when the Clack softener is in service and not regenerating.

Safety: Place the unit in bypass to stop the drain flow and prevent water waste. Disconnect power before disassembly.

Steps:

• Confirm internal leak: With the unit in service (not regenerating) and not in bypass, check the drain line. Any continuous flow indicates an internal leak.
• Inspect piston and seals: Remove the piston and seal/spacer stack. Look for cuts, deformation, or debris on seals. Replace with a new Clack seal and spacer kit if worn.
• Check drain port and DLFC: Remove the drain line flow control assembly and inspect for debris preventing full closure. Clean or replace the DLFC button and seat as needed.
• Inspect valve body: Examine the valve body for cracks around the drain port or seal areas. A cracked body will require replacement of the entire Clack control valve body.
• Reassemble and test: Reinstall components, take the unit out of bypass, and verify that the drain line is dry during service.

Warning: Continuous drain leaks can be subtle but add up to significant water loss over time.