Anest Iwata DDP 120 B.TE Manual De Instrucciones página 78

DPS-70 C - DPS-70 CN DIAPHRAGM PUMPS
EN
12. DIAPHRAGM PUMP TROUBLESHOOTING
IMPORTANT
Spare parts marked by [#] must be ANEST IWATA original items. If not, it can cause failure.
PROBLEM CAUSE
The compressed air does not reach the pump
air inlet.
The air pressure is too low to start the pump.
The exhaust valve (A pg. 15) is in dischar-
ging position.
The air regulator is closed.
The paint regulator is closed.
The silencer (27 pg. 22) is clogged.
The following parts are clogged due to solidified paint inside them.
The suction hose filter is clogged.
Every pump fluid passage.
PUMP DOES NOT
Every paint regulator fluid passage.
WORK, IT STOPS
OR DOES NOT
RESTART
The pump does not run.
The following parts are unscrewed or damaged.
The pump suction connector with the suction
pipe
The suction connector
The lower adaptor
PUMP WORKS BUT
THE PAINT DOES The dip tube suction pipe
NOT COME OUT
The pressure regulator, the recirculation
two-way valve and the gun are closed?
The following parts are clogged with some solidified paint residues?
The suction filter.
The suction hose set.
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SOLUTION
Connect the compressed air.
Set air pressure of at least 2 bar.
Turn the valve in the right position.
Open the air regulator.
Open the paint regulator.
Replace the silencer.
Clean and replace the filter.
Remove the clogging material.
Remove the clogging material.
Disassemble the pump and check the
following parts which will be replaced if
damaged:
PTFE diaphragm. [#]
Rubber diaphragm. [#]
"Y" packings. [#]
O ring. [#]
Rod (any strange deformation,scratches or
burrs). [#]
Self-lubricating bushings. [#]
Main casing inside diameters (Ø 10) damaged
(scratched or with burrs).
Replace Air Operating Valve.
Check if some tightening are loosened and
tighten them.
Put some adhesive and tighten.
Tighten.
If the suction pipe is damaged (it sucks air),
replace it.
Open the pressure regulator and then the
gun and the recirculation two-way valve
Clean and replace the filter.
Remove the solidified part.
DPS-70 C - DPS-70 CN DIAPHRAGM PUMPS
PROBLEM CAUSE
All the pump fluid passages.
All the paint regulator fluid passages.
The upper and lower balls are stuck?
PUMP WORKS BUT
The following parts are damaged or worn?
THE PAINT DOES
The ball seats (exhaust and intake valves).
NOT COME OUT
The balls.
The O'rings of each ball seat
The PTFE diaphragms
The following parts are unscrewed or damaged?
The pump suction joint (N and R page 22) with
suction pump.
The suction joint (N page 22).
The lower adaptor.
PAINT OUTPUT
The suction pipe of dip tube.
CONTAINS AIR
The nuts at the rod ends are loosened?
The following parts are damaged?
Diaphragms.
The O rings (ref. 23 page 22) between the PTFE
diaphragm and the diaphragm seat.
The paint regulator is closed?
Check air sources.
The air flow is interrupted by the air pipe
bending.
The air pressure is too low to start the pump.
The air regulator is closed.
The silencer (ref. 27 page 22) is clogged.
The following parts are clogged with some solidified paint?
PAINT OUTPUT
The suction filter (of the dip tube).
DECRASES
The suction pipe (of the dip tube).
All the pump material passages.
All the paint regulator material passages.
The following parts are damaged or worn?
The ball seats.
The balls (ref. 9 page 22).
The PTFE diaphragms.
EN
SOLUTION
Remove the solidified part.
Remove the solidified part. [#]
Clean the surfaces and release them. [#]
Replace them. [#]
Replace them. [#]
Replace them. [#]
Replace them. [#]
Check the loosened tightening and tighten
them.
Apply some adhesive and tighten.
Tighten.
If the dip tube set is damaged (it sucks some
air), it must be replaced.
Tighten them. [#]
Replace them. [#]
Replace them. [#]
Open the paint regulator.
Restore the air pipe
Set air pressure of at least 2 bar.
Open the air regulator.
Replace it.
Clean and replace the filter.
Remove the solidified part.
Remove the solidified part.
Remove the solidified part.
Replace them.
Replace them.
Replace them.
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