10
11
Pump does not achieve Air trapped in suction line
Check suction tubing at fittings for splits.
or maintain prime
Straighten suction line to eliminate high spots.
Foot valve contaminated or improperly Inspect foot valve screen and assure that foot
installed valve is in a vertical position below
fluid level.
Excessive lift
Max suction lift is 5 feet with fluids of specific
gravity of water; less with heavier liquids such
as acid. Mount pump in a lower position .
Worn or contaminated check valves
Inspect check valves in fluid end for cleanliness.
Clean or replace as necessary.
Low chemical level
Check fluid level in chemical supply tank
Insufficient fluid
Stroke adjustment set too low
Check operation of stroke length limiter knob.
Worn or contaminated check valves
Inspect, clean or replace as necessary.
Clogged foot valve screen
Clean or replace foot valve screen.
Output (system) pressure too high
Inject into a lower pressure point in the the
system.
Diaphragm worn or torn
Replace diaphragm.
Excessive fluid
Failure or lack of anti-siphon valve
Inspect or add anti-siphon valve.This is
caused when system is in a vacuum condition or
a flooded suction application on systems at very
low pressures.
Improper stroke length
Reduce stroke length.
Pump will not pump
System pressure too high
Check system pressure to assure that it is within
but is stroking
pump rated parameters for pressure.
Diaphragm improperly installed
Make sure that diaphragm is screwed fully
onto shaft.
Check valves worn or clogged
Clean or replace as required.
Pump will not run
Pump not turned on or not plugged in
Check outlet with meter to assure the requied
voltage is present and that power supply cord is
in good condition and plugged in.
Blown fuse
Check fuse on pump circuit board.
Electronic failure
Consult dealer or factory.
Excessive noise
Pump not primed
Prime pump.
No output pressure
Add an anti-siphon valve to provide 25 PSI
restriction on pump discharge.
VII. Troubleshooting
PROBLEM CAUSE
REMEDY
