Water Pump Cleaning Guide
Things to know before you start
Not all water pumps have internal filters to clean. Check whether you water pump’s housing is brass or silver. Brass pumps all have internal filters. Silver pumps manufactured between 2005 and June 2007 have internal filters, while those manufactured later do not.
Water pumps manufactured after June 2007 have an external filter rather than internal filters. This filter is located in the water line between the reservoir and the pump input fitting. The MFR recommends that this in-line filter be replaced every 2 years or 2000 cycles. Replacement is simple and self-explanatory. Just make sure the arrow is pointing in the direction of the water flow.
The pump cleaning procedure is the same for both a Statim 2000 and Statim 5000. However, to access the water pump in a 5000, you must remove the air compressor. Simply remove the 4 screws holding the air compressor to the chassis, then tip the compressor to the right. There is no need to completely uninstall the compressor.
To clean the water pump
Remove the water tube from the input fitting and pinch off the tubing with a hemostat or similar.
If you wish, you can remove the water pump from the Statim to get easier access to the filters, but it is not necessary.
Remove the input fitting with a 9/16″ wrench, then gently push out the mesh filter with a small blunt object, such as a hex key (Allen wrench).
Rinse out the filter, then push it back into place with the hex key.
Replace the input fitting. Do not overtighten. There is no need to apply tape to the threads.
Using a black marker, draw a straight line across the output fitting and the plastic pump housing. The line should be drawn in the direction the elbow fitting is pointing.
Disconnect the water hose from the output fitting using a 3/8 wrench.
Remove the output fitting from the plastic pump housing using a 9/16″ wrench.
Remove the elbow fitting from the brass coupling with a 7/16″ wrench.
Clean and rinse the output filter (non-removable).
Reattach the elbow fitting to the coupling. Make sure the elbow fitting direction aligns with the black line.
Wrap the threads of the brass coupling with plumber’s tape (important!)
Make sure the white plastic spacer is in place, then thread the output fitting into the plastic pump housing, being very careful not to cross-thread the delicate plastic threads. After 5 or 6 revolutions, you will feel the fitting tighten up just before the black lines meet. Continue turning until the black lines meet, then do not tighten further.
Reattach the water hose to the output fitting (do not overtighten!) and the water tube to the input fitting. Secure the tube to the input fitting with a zip tie.
Prime the pump, then perform a pump test. If the pump fails the test, replace it.