Softener makes loud banging or knocking noises in the pipes during regeneration.

Safety: Use caution when working around pressurized plumbing.

Steps:

• Measure pressure: Use a gauge to check house pressure. If above AquaClean recommendations, install or adjust a pressure reducing valve.
• Secure pipes: Add pipe clamps or supports to loose sections of plumbing near the softener.
• Install arrestors: Install water hammer arrestors on the softener inlet and/or near noisy fixtures.
• Check valve settings: Ensure the AquaClean valve is not set to an excessively high backwash flow rate beyond plumbing capacity.

Persistent severe hammer may require a plumber to evaluate the overall plumbing system.