Clack water softener causes water hammer or banging pipes during regeneration.

Safety: Sudden pressure surges can damage plumbing. Consider reducing pressure if above recommended limits.

Steps:

• Measure pressure: Use a pressure gauge to check inlet pressure. If above 80 psi, install or adjust a pressure reducing valve to bring it within recommended range.
• Secure plumbing: Ensure pipes near the softener are properly supported and not free to move excessively.
• Install water hammer arrestors: Add hammer arrestors near quick-closing valves or at the softener inlet/outlet if hammer persists.
• Check valve operation: Verify that the Clack valve is not cycling abnormally fast due to control issues. If it is, inspect the control board and motor.

Tip: Soft-start features in some Clack models help reduce hammer; ensure firmware and programming are up to date if applicable.