Numatic Insufficient Solution Delivery

Solution tank remains full; very little solution is used even after extended cleaning.

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

Weak or failing solution pump, Blocked solution filter, Partially blocked spray jets, Airlock in pump

Safety first: Unplug the machine before servicing the pump or filter.

Clean filter and jets: Remove and clean the solution filter and all spray nozzles.
Bleed air: Refill the tank and run the pump with the trigger open to purge air from the system.
Check pump output: Disconnect the solution line at a safe point and briefly run the pump into a container to observe flow. Replace the pump if output is weak.

Medium 3/5

Solution Pump Assembly

Check Price on Amazon

We may earn a commission from links on this page.