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Installation, Operation and Maintenance Manual
MAN 571_EAC Rev. 1
September 2020
Troubleshooting
Section 6: Troubleshooting
Section 6: Troubleshooting
6.1
Failure or Breakdown Research
Event
Possible cause
Remedy
Actuator does
not work
Lack of power supply
Restore it
Lack of pneumatic 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
Call Biffi Italia s.r.l. Customer Service
Low supply pressure
Restore (Section 1.4)
Actuator too slow
Low supply pressure
Restore (Section 1.4)
Wrong calibration of flow regulator valves
Restore (Section 3.6)
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
of the valve
Wrong adjustment of mechanical stops
Restore (Section 3.4)
Wrong warning of micro-switches
Restore (Section 3.5)
Hydraulic manual
pump does not work
Distributor positioned on AUTOMATIC
Position the distributor on the indication
of the operation to make
Lack of oil in the gas-hydraulic tanks
Restore proper oil levels in the tanks
(Section 5.1.1)
Leakages on the check valve of the
hydraulic control group
Call Biffi Italia s.r.l. Customer Service
Table 8.
