Water hammer or banging noises occur in plumbing when the Fleck softener changes cycles.

Safety first: Use caution when adjusting pressure regulators. Do not exceed plumbing code limits.

• Measure pressure: Use a pressure gauge to check house pressure. If above 80 psi, install or adjust a pressure reducing valve.
• Install hammer arrestors: Add water hammer arrestors near the softener or at problem fixtures to absorb shock.
• Secure piping: Ensure pipes near the softener are properly strapped and supported to reduce movement.
• Adjust cycle timing: On some advanced controls, slowing certain transitions may help; consult the Fleck manual or a technician.