DÖRR EcoPump AD, Operation Manual

Page: 23 / 36

10 Faults
10.1 Defects table
Fault description Cause Remedy
Pump not working despite com-
pressed air supply. Blocked muffler.
Clean and check; replace if required.
Ä 12.7 “Operating and auxiliary mate-
rials”
Ä 9.3.4 “Dismantle pneumatic
assembly”
Main valve blocked or
soiled.
Clean and check; replace if required.
Ä 12.7 “Operating and auxiliary mate-
rials”
Ä 9.3.4 “Dismantle pneumatic
assembly”
Pressure line closed.
Open shut-off valve.
Counter pressure too high
Check line and material.
Ball stuck to ball seat.
Check pump before standstill.
Air motor sealing rings
swollen.
Replace sealing rings
Check ambient temperature
Assembly position of the
pump wrong
Install the pump in an upright position.
Ä 5.2 “Assembly”
Pump blows air out of muffler. Main valve seals worn out
Replace.
Ä 9.3.4 “Dismantle pneumatic
assembly”
Changeover valve seals
worn out.
Replace.
Ä 9.3.4 “Dismantle pneumatic
assembly”
D-valve and ceramic plate
worn out.
Replace.
Ä 9.3.4 “Dismantle pneumatic
assembly”
Changeover valve worn out. Replace.
Ä 9.3.4 “Dismantle pneumatic
assembly”
No displacement volume Pump sucks air.
Seal suction line.
Suction valve closed.
Open suction valve.
Volume flow rate exceeded,
Check suction capacity.
Ä 12.4 “Operating values”
Ball and ball seat on suction
side worn out.
Replace.
Ä 9.3.2 “Dismantle inlet and outlet
manifold”
Foreign body between ball
and ball seat Cleaning
Ä 12.7 “Operating and auxiliary mate-
rials”
Low displacement volume Blocked muffler.
Clean and check; replace if required.
Faults
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