DAB Mechanical Vibration / Misalignment

Pump vibrates excessively, causing pipes to shake and making a droning noise

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Pump not securely bolted to base, Uneven or soft mounting surface, Misaligned motor and wet end, Imbalanced impeller

Safety first: Turn off power before touching the pump or base.

Steps to check:

Secure mounting: Ensure the DAB pump base is firmly bolted to a solid, level pad. Tighten loose mounting bolts.
Check pipe support: Add supports to suction and discharge pipes to reduce stress on the pump unions.
Inspect impeller: Remove and check the impeller for missing pieces or heavy scale buildup that could cause imbalance.
Realign motor and wet end: Loosen mounting bolts, align the motor and pump housing, then retighten evenly.

Medium 3/5

DAB pump mounting base

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