Anest Iwata DDP 70 B Manual De Instrucciones De Uso Y Mantenimiento página 24

DPS-70 C - DPS-70 CN DIAPHRAGM PUMPS
EN
12. DIAPHRAGM PUMP TROUBLESHOOTING
PROBLEM
PUMP DOES NOT
WORK, IT STOPS
OR DOES NOT
RESTART
PUMP WORKS BUT
THE PAINT DOES
NOT COME OUT
24
IMPORTANT
Spare parts marked by [#] must be ANEST IWATA original items. If not, it can cause failure.
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.
Every paint regulator fluid passage.
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
The dip tube suction pipe
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.
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.