GEA VARIVENT 24/7 PMO, Оригинальная инструкция по эксплуатации

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52
Malfunctions
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
Solenoid valve defective Replace solenoid valve
the valve is operating against
the hydraulically
closed pipe open pipe
Double valve disk oscillates
during lifting or does not open Air pressure
too low Increase air pressure
Product pressure too high Reduce product pressure
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
top are dry (friction losses) Grease O-rings
Leakage in the area of the
Valve housing Housing O-rings defective Disassemble the valve, change
the
housing O-rings
Leakage at the leakage outlet
(closed position) Valve disk
V-ring defective Dismantle valve insert
replace V-rings
Leakage in the lantern Sealing ring defective Replace the sealing ring
Operating Instructions · VARIVENT
®
Mixproof Valve M-C/2.0
Edition 2018-10-04