Installation, Operation and Maintenance Manual
MAN-02-05-62-0742-EN Rev. 0
December 2019
Section 13: Troubleshooting
Figure 16
Cross-over valve
Throttle valve
Pilot operated
check valve
If fault
Then check
Actuator (valve) is not operating.
Power unit.
Solenoid valve in solenoid valve cabinet.
Throttle valve on the actuator.
Cross-over valve on the actuator (it is normally closed).
Check pressure at actuator by mean of quick connectors.
Actuator (valve) does not keep the last
order position.
Pilot operated check valve on the actuator.
Actuator (valve) traveling time is too
fast or too slow.
Pilot operated check valve on the actuator.
Note:
When the operating time is set at the actual ambient
temperature, it may fluctuate with the operating viscosity
which is changeable according to operating temperature.
Actuator (valve) is not fully closed.
That the power unit keeps 135 bar.
Cross-over valve on the actuator.
Butterfly valve.
40
Troubleshooting
Section 13: Troubleshooting
