Versa-Matic N50 AIR OPERATED AIR OPERATED DOUBLE DIAPHRAGM PUMP - Manual (Page 5)

HG-CF-1042 Rev. C - 03/28/03
TROUBLE SHOOTING GUIDE
NOTE :- Check all solutions before dismantling the pump.
PROBLEM CAUSE SOLUTION
Pump will not start Air valve assembly malfunction/Siezure
Obstructed fluid line.
Obstructed diaphragm chamber.
Diaphragm failure causing fluid & excessive air to be
expelled through the exhaust.
Diaphragm seal failure.
Air valve system malfunction.
Air connected to exhaust. Check carrier for freedom of movement. -
Clean, oil & replace.
Clean line or increase line size.
Remove obstruction.
Replace diaphragm.
Replace shaft seals.
Check all seals in valve chest assembly.
Re-connect to air inlet.
Erratic flow Diaphragm failure on one side.
Valve ball not seating.
Suction leakage.
Diaphragm failure causing fluid & excessive air to be
expelled through the exhaust.
Diaphragm seal failure.
Air valve system malfunction. Replace diaphragm.
Check and remove obstruction.
Check and correct.
Replace diaphragm.
Replace shaft seals.
Check all seals in valve chest assembly.
Pump strokes but will not
discharge Excessive suction lift.
Suction line leakage.
Valve ball not seating correctly or damaged.
Suction line or strainer clogged.
Diaphragm failure. Shorten suction line.
Check and correct.
Check and remove obstruction / replace.
Clear.
Replace diaphragm.
Fluid discharged from air
exhaust Diaphragm Failure.
Loose frontplate. Replace diaphragm.
Re-Torque to manual specifications.
Intermittent stroke rate Over lubrication
Diaphragm shaft seal failure.
Air valve system malfunction.
Valve ball not seating / partially obstructed. Shut-down pump. Remove air connection
into pump & introduce a small quantity of de-
greasing agent into air valve and replace
line. Run pump until clear.
Replace seals.
Check all seals in valve chest assembly.
Clear obstruction.
Page 4
RECYCLING
M a n y c o m p o n e n t s o f
KREMLIN air operated double
diaphragm pumps are made
of recyclable materials. We
encourage pump users to recycle worn out
parts and pumps whenever possible, after
any hazardous pumped fluids are
thoroughly flushed.
Read these safety warnings
and instructions in this manual
completely, before installation
and start-up of the pump. It is the
responsibility of the purchaser to retain this
manual for reference. Failure to comply with
the recommendations stated in this manual
will damage the pump, and void factory
warranty.
WARNING!
Before maintenance or repair,
shut off the com-pressed air
line, bleed the pressure, and
disconnect the air line from the pump. The
discharge line may be pressurized and must
be bled of its pressure.
WARNING!
In the event of diaphragm
rupture, pumped material may
enter the air end of the pump,
and be discharged into the atmosphere. If
pumping a product which is hazardous or
toxic, the air exhaust must be piped to an
appropriate area for safe disposition.
WARNING!
Before pump operation, in-
spect all gasketed fasteners
for looseness caused by gas-
ket creep. Re-torque loose fasteners to
prevent leakage. Follow recommended
torques stated in this manual.
CAUTION!
This pump is pressurized
internally with air pressure
during operation. Always
make certain that all bolting is in good
condition and that all of the correct bolting is
reinstalled during assembly.
IMPORTANT!
Take action to prevent static
sparking. Fire or explosion
can result, especially when
handling flammable liquids. The pump,
piping, valves, containers or other
miscellaneous equipment must be
grounded.
WARNING!
Airborne particles and loud
noise hazards. Wear ear and
eye protection.
WARNING!
When used for toxic or
aggressive fluids, the pump
should always be flushed
clean prior to disassembly.
WARNING!
B e f o r e d o i n g a n y
maintenance on the pump, be
certain all pressure is
completely vented from the pump, suction,
discharge, piping, and all other openings
and connections. Be certain the air supply is
locked out or made non-operational, so that
it cannot be started while work is being done
on the pump. Be certain that approved eye
protection and protective clothing are worn
all times in the vicinity of the pump. Failure
to follow these recommendations may result
in serious injury or death.
WARNING!