Instruction Manual
INSTRUGnON
MANUAL
Industrial Triplex Pumps
INDUSTRIAL
TRIPLEX
PUMPS
TROUBLESHOOTING
GUIDE
Symptom
Possible
causa(s)
Corrective Action
Oil leak
between
Worn rod oil seals Replace crankcase piston rod seals
crankcase
and
pumping
section
Frequent
or
Cracked, damaged Replace plungers
premature failure
or
worn
plunger
of
the packing)
Overpressure
to
Reduce inlet pressure
inlet manifold
Material
in
the
fluid Install proper filtration on
being pumped
I
pump
inlet plumbing
Excessive pressure
Check
pressures and fluid inlet
and/or
temperature
of
temperature;
be
sure
they
are
fluid being pumped within specified range
Running
pump
dry
Do
not
run
pump
without water
Pump runs Pump is
not
primed Flood suction then restart pump
but
produces
no
flow
Pump fails
Air
is trapped inside pump Disconnect discharge hose from pump.
to prime Flood suction hose, restart
pump
and
run
I
pump
until all air has been evacuated
Pump
looses
Air
leak in suction Remove suction line and inspect
prime, chattering
hose
or
inlet
it
for
a loose liner
or
debris lodged
noise, pressure in hose. Avoid all unnecessary
fluctuates bends.
Do
not
kink hose
Clogged suction strainer Clean strainer
Low
pressure
Unloader valve is by-passing Make sure unloader is adjusted property
at
nozzle
and
by-pass seat is
not
leaking
Incorrect
or
worn nozzle Make sure nozzle is matched
to
the
flow
and pressure
of
the
pump.
If
the
nozzle is worn, replace
Worn packing
or
valves Replace packing
or
valves
Pressure gauge Valves
wom
or
blocked Clean
or
replace valves
fluctuates
by
foreign bodies
Packing worn
Replace packing
Low
pressure Worn nozzle Replace
with
nozzle
of
proper size
Low
engine RPM Increase engine RPM
to
3400
Air
leak in inlet plumbing Disassemble, reseal
and
reassemble
6-
ENG
140*213MM