Problem
Possible Causes
Trouble Shooting
Excessive
Pump
Output
Syphoning
Little or
no
pressure
at
injection
point Excessive strokes
per
minute
Move
injection
point
to
a
pressurized
point
Make sure
injection
check
valve
installed
properly
Consult
factory
Pump
will
not
prime/loss priming
Pump
not
turned
on
or
plugged i
n
No
demand
as
per
the set point.
Foot
valve
not
in
vertical
position
in
the
tank.
Pump
suction
lift
is
too
high
Suction
tubing
is
curved
or
coiled
inside
the
tank
Air
trap
in
suction
tubing
No
solution in
the
tank/container
Airlock
on
suction
side
Turn
on
the
pump/plug
in
Prime the pump in manual mode
Foot
valve
must
be
vertical
Maximum suction
lift
is
5
feet.
Suction
tubing must
be
vertical
Untighten
the
air
bleed
valve, run
the
pump
till
air
trap
is
out
then
tighten.
Refill
the
container/tank
and
re-prime
Check
tubing
for
pinholes, cracks, replace
if
necessary
Low
output
or
failure
to
pump
against pressure
Pump
maximum
pressure rating
exceeded
by
injection
Worn
seal
rings
&
balls Ruptured diaphragm
Tubing run
on
the
discharge
side
may
be
too
long
Clogged
foot
valve strainer
Injection
pressure
cannot
exceed
pump
rated
pressure Check
&
replace Check
&
replace
Longer
tubing
may
create frictional
losses
sufficient
to
reduce
pump
pressure
rating
Clean
or replace
Trouble Shoot
