Safety systems

When removing the pipes it is advisable to change the O- Rings and the ring for retaining to the union plate. To insert the retainer ring proceed as illustrated using the special tool.

Safety systems

The hydraulic system described above is controlled by an electronic control unit which manages its operation ensuring high operating safety.

The hood operating cycle takes place according to precise sequences coded in the software of the control unit: each sequence comprises "timed" steps, i.e. with a foreseen average duration and a limit ("time-out") beyond which the procedure is stopped, as it is assumed that a fault or some kind of obstacle has occurred.

• if the hood is left in the intermediate position with the ignition key at MARCIA, after 5 minutes the hydraulic circuit is discharged, therefore the hood can fall forwards or backwards with the possibility of damage.
• during normal operation the solenoid valves remain supplied for 25 seconds when the pump has been deactivated, after which the circuit is discharged.
• If the operating sequence is interrupted, for example if the button is released when the operation has NOT been completed yet, the system "locks" and sets itself to "PAUSE": this means that all the solenoid valves remain supplied, while the pump is off: this way the hydraulic pistons are blocked and the hood stops in the position it was in. This mode lasts only 5 minutes (to avoid draining the battery), then the pump is deactivated, but the led stays on.
• any damage due to operation of the hood with the front hooks closed is limited by the operation of the safety block of the pump (overpressure) and by the control logic of the control unit which intervenes after a limit time of 20 seconds of operation of the pump.