8
TROUBLESHOOTING
The pump will not prime Air is leaking into the inlet
hose or connection
The inlet hose is clogged
The hose collapsed due to inlet
line suction on a flat surface
The impeller, body, and end cover
are worn from pumping abrasives
Air is leaking in at the seal
or O-ring
The shaft turns but the impeller
does not turn
Drill speed is too slow
Replace the washer in the hose
fitting or replace the hose
Clean or replace the hose
Use quality, heavy duty, thick-
walled hose on suction side
of pump
Notch the end of the inlet line
where it meets the flat surface,
use suction rated hose
Replace the pump
Replace the pump
Replace the pump
Replace the pump
The impeller blades are missing
or charred from dry running
Incrementally snug the screws on
the front cover plate to seal the
O-ring. Disassemble, clean and
lubricate all components and seals.
If O-ring or Shaft seal is damaged,
replace the pump
Increase drill speed
There is a low flow rate
The drill is running too slowly
There is a restriction in the inlet
or discharge hoses
The suction hose is too long, the
diameter is too small and/or the
pump is too high above the
liquid surface
The lip seal is damaged
Increase the drill speed. Minimum
dril speed for acceptable
operation is 800 RPM. Optimal
drill speed is 3500 RPM
Clean or replace the hoses.
Check hoses to eliminate any
sharp bends or kinks in the lines
Use appropriate hose and
pumping setup to maximize
performance
Liquid is leaking where
the shaft enters the
pump body
Problem
Probable Cause
Corrective Action
