Malfunctions
28
Operating Instructions · ECOVENT
®
Valve N/W and N.M DN 10/15
Edition 2014-07-04
Malfunctions
In the event of malfunctions immediately deactivate the valve and secure it against inad-
vertent reactivation. Malfunctions may only be remedied by qualified staff, who must
observe the safety instructions.
Malfunction
Cause
Remedy
Valve does not work
Fault in the
control system
Check the system configura-
tion
No compressed air or
compressed air pressure too
low
Check the compressed air
supply
Check air hoses for free
passage and air tightness
Fault in the electrical system
Check actuation / external
controller and routing of elec-
trical lines
Valve does not close
Dirt/foreign material between
valve seat and valve disk
Clean valve housing and valve
seat
Valve closes too slowly
O-rings in actuator and control
module are dry (friction losses)
Grease O-rings
Leakage in the area of the
Valve body
Housing O-rings defective
Disassemble the valve, change
the
housing O-rings
Leakage in the lantern
Sealing ring defective
Replace the sealing ring
