44
7. TROUBLESHOOTING
The pump does not work, it stops or does
not restart.
Check the air sources:
a) The compressed air does not reach the pump air
inlet
b) The air pressure is too low to start the pump
c) The three-way valve (3-1) is in discharging position
d) The air regulator is closed
a) Connect the compressed air.
b) Supply a sufficient air pressure (minimum 2,0 bar).
c) Turn the valve in the right position.
d) Open the air regulator.
The PR 3E (or PR5) pressure regulator is closed
Open the PR3 E (or PR5) pressure regulator
Replace the double pneumatic valve.
Replace the silencer.
a) Clean and replace the fluid filter.
b) Remove the clogging material.
c) Remove the clogging material.
The silencer (1-37) is clogged
The following parts are clogged because of
solidified paint inside them?
a) Fluid filter inside the paint filter
b) Every pump fluid passage
c) Every paint regulator fluid passage
1
3
The pump does not run when the reset
push button on the double pneumatic valve
is pressed
Disassemble the pump and check the following
parts which will be replaced if damaged:
a) PTFE diaphragm (1-31).
b) Rubber diaphragm (1-32).
c) Y packings (1-34).
d) O ring.
e) Rod (any strange deformation, scratches or burrs).
f) Self-lubricating bushings.
g) Main casing inside diameters (Ø 15) damaged
(scratched or with burrs).
5
2
4
7.1 DDP 90 D
DOUBLE DIAPHRAGM PUMP
Summary of Contents for DDP 90 C WB
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