Versa-Matic N25 AIR OPERATED AIR OPERATED DOUBLE DIAPHRAGM PUMP - Manual (Page 5)

HG-CF-998 Rev. D - 03/27/03
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
Many components of 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 discon-
nect 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 rup-
ture, 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, inspect
all gasketed fasteners for loose-
ness caused by gasket 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 protec-
tion.
WARNING!
When used for toxic or
aggressive fluids, the pump
should always be flushed clean
prior to disassembly.
WARNING!
Before doing any 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!