ARI Armaturen FA800 EN - Manual (Page 16)

Page 16 Rev. 0040504003 2310
Operating and installation instructions
Pneumatic actuators - FA160-800
9.0 Troubleshooting
In the event of malfunction or faulty operating performance check that the installation and
adjustment work has been carried out and completed in accordance with these Operating
Instructions.
If malfunctions cannot be eliminate with the help of the following table „10.0
Troubleshooting table“, the supplier or manufacturer should be consulted.
10.0 Troubleshooting table
ATTENTION !
It is essential that the safety regulations are observed when identifying faults.
ATTENTION !
- read point 7.0 and 8.0 prior to dismantling and repair work !
- read point 6.0 before restarting the plant !
Fault Possible causes Corrective measures
Actuator unit does not move No compressed air on the control
pressure line Discern the causes and remedy
Actuator unit has been improperly
installed Check the actuator’s operating
mode and connect to the control
pressure line in accordance to this
operating mode
(refer to item 5.0)
The rolling diaphragm is defect Replace the rolling diaphragm and
springs
There is not enough positioning
force available Wrong actuator Install a suitable actuator
(refer to item 4.5)
Control air pressure too low Adjust the control air pressure as
described in 4.5.2; note the
permissible closing pressures!
The ventilation is plugged and the
air cannot escape from the actuator
unit Screw cap must be disengaged