December 2020
Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Troubleshooting
37
Section 6: Troubleshooting
Section 6: Troubleshooting
6.1
Failure or Breakdown Research
Event
Possible Cause
Remedy
Actuator does not work
Lack of power supply
Lack of hydraulic supply
Blocked valve
Wrong position of the distributor of the
manual hydraulic group
Failure of the control group
Unexpected intervention of torque
limit-device
Low supply pressure
Restore it
Open line interception valve
Repair or replace
Restore correct position
Call Biffi Italia s.r.l.
Customer Service
Call Biffi Italia s.r.l.
Customer Service
Restore (Section 1.4)
Actuator too slow
Low supply pressure
Wrong calibration of flow regulator valves
Wear of the valve
Restore (Section 1.4)
Restore (Section 3.6)
Replace
Actuator too fast
High supply pressure
Wrong calibration of flow regulator valves
Restore (Section 1.4)
Restore (Section 3.6)
Leakages on hydraulic or
pneumatic circuits
Deterioration and/or damage to gaskets
Call Biffi Italia s.r.l.
Customer Service
Incorrect position of the valve
Wrong adjustment of mechanical stops
Wrong warning of micro-switches
Restore (Section 3.4)
Restore (Section 3.5)
Hydraulic manual pump does
not work
Handle positioned on remote control
Leakages on the check valve of the hydraulic
control group
Reposition the operation
indication handle to manual
Call
Biffi Italia s.r.l.
Customer Service
Table 15.
