17
EMERGENCY DESCENT
This chapter illustrates the procedure needed to take the basket down to ground in the event of a
breakdown.
The staff on ground shall be trained and shall have already attemped the operation of manual recovery.
The instructions in this manual shall therefore be only a reminder.
If the description of the manoevers is not clear enough, please contact customer service immediately
and do not start using the platform.
In an emergency for a safe basket recovery, evacuate the people and the materials from the basket
first if possible.
Should this not be possible make sure people have their safety belts on and the materials are tied to
prevent them from falling if the basket should oscillate.
Decide which movements are needed to take the basket down in safety and try to bring the telescopic
arms back in as soon as possible.
Before using the manual pump and the manual drive of the electric valves check whether the
breakdown is localized, for example:
-
if the basket controls do not work check the operation of the ones at ground level, if necessary
use the spare wrench for selection . This wrench is supplied upon delivery of the vehicle and
shall be kept in the cabin.
-
if the main pump works correctly, there is no need for using the manual pump
-
if the main pump does not work, but the controls work from an electrical standpoint, pump
manually but work from one of the control seats
In the event of faulty operation of the platform, it is possible to lower the cage to the ground again by
proceeding as follows :
1)
For the models 180 and 220 ALU remove the carter located behind the turret; for the model
160 ALU open the door of the drawer located under the truck body, to reach the hydraulic
components;
2)
Turn the hand-wheel of the speed-control valve (2) as far as it will go but without forcing it;
3)
Press the small push-buttons of the solenoid valves to obtain the required movements, keeping
in mind that the valves are arranged as follows, starting from the bottom:
3rd : telescopic boom control solenoid valve;
4th : main cylinder control solenoid valve;
5th : turret rotation solenoid valve;
6th : cage level correction solenoid valve,
To lower the central jack, since this movement is controlled by the circuit of the limiting device it is
necessary to press at the same time the small push-button on the end of the coil of the solenoid
valve - 7 - located above the set of control solenoid valves. This push-button is sealed, and after use
it should be resealed in order to ensure correct operation of the circuit controlling the limiting device.
To hold the eletric valve -7- in pressed position use the fork supplied. When the operation is terminated
take the fork away.
Either the main pump of the vehicle or, if this is not working, the hand pump may be used for
pumping.
While operating the machine using the emergency controls, the automatic control
and safety devices do not work. It is therefore necessary to retract the telescopic
boom completely first, and then to proceed with rotation and lowering.
When the operation is over and before using the platform again check the operation of all
the safety devices.
Содержание 160 ALU
Страница 8: ...8 MULTITEL 220 ALU AF ...
Страница 23: ...23 ADDITIONAL INSTRUCTIONS FOR PARTICULAR OPTIONS ...