42
February 2022
Installation, Operation and Maintenance Manual
MAN 607 Rev. 6
Section 6: Troubleshooting
Troubleshooting
Section 6: Troubleshooting
6.1
Failure or Breakdown Research
Event
Possible cause
Remedy
Actuator does n
ot wor
k
Lack of power supply
Restore it
Lack of hydraulic supply
Open line interception valve
Blocked valve
Repair or replace
Wrong position of the distributor of the
manual hydraulic group
Restore correct position
Failure of the control group
Call Biffi Italia s.r.l.
Customer Service
Unexpected intervention of
torque limit-device
Low supply pressure
Call Biffi Italia s.r.l.
Customer Service
Restore (Section 1.4)
Actuator too slow
Low supply pressure
Wrong calibration of flow re
gulator valves
Bad functioning of quick exhaust valve
Restore (Section 1.4)
Restore (Section 3.6)
Call Biffi Italia s.r.l.
Customer Service
Wear of the valve
Replace
Actuator too fast
High supply pressure
Restore (Section 1.4)
Wrong calibration of flow regulator valves 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 o
f
the valve
Wrong adjustment of mechanical stops
Restore (Section 3.4)
Wrong warning of microswitches
Restore (Section 3.5)
Hydraulic manual pump
does not work
Handle positioned on remote control
Position the handle on the
indication of the operation
to make
Leakages on the check valve of the
hydraulic control group
Call Biffi Italia s.r.l.
Customer Service
Table 14.
