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4.3 LOWERING OPERATIONS
Follow these instructions:
•
Press the emergency cut-off switch (23 Fig. 2) bringing down the saddles to the minimum height.
•
Press the CARRIAGE ALIGNEMENT pushbutton (24 Fig. 2) until both saddles reach the maximum height.
•
After 5 ÷ 10 minutes of rest which allows the separation of any air within the oil, repeate the emergency cut-off switch cycle as shown in steps
1) and 2) to make sure that the safety devices function properly as described in this manual.
•
With completely lowered carriages, check the oil level and, if necessary, add more oil to reach the proper level, that is 2 ÷ 3 cm
below the oil filling hole.
4.4 SAFETY DEVICES
WARNING: Do not absolutely remove or tamper with these devices. They must be kept in full efficiency all the time:
•
Toe safety devices applied to the arms (14 Fig. 2) prevent the squashing of the operators feet during the last phase of arms lowering.
•
Current presence led (21 Fig.2): when it is on, approaching the lift is no permitted.
•
Arms anti-rotation mechanical safety devices with automatic insertion (15 Fig. 2 and 1 Fig. 14): they do not permit, the rotation of the lifting
arms with the saddles lifted.
•
Mechanical anti-fall safety devices (1 Fig. 13): they block the saddle lowering in case of leak in the hydraulic system or break of the
mechanical lifting devices.
•
Safety valves (hydraulic diagram): They prevent the saddles from descending in case there is a sudden decrease in pressure in the hydraulic
circuit or the lowering of one single saddle in case the other one is not moving because of a mechanical blocking.
•
Emergency cut-off switch
•
Auxiliary electric circuit in low tension: this circuit can not cause "electric shock".
•
Vehicle anti-collision safety (16 Fig. 2 and 2 Fig. 11): it blocks the raising of the lift if the vehicle being raised is about to collide with the
upper crosspiece.
•
"Manned" control panel: attendance of operator is necessary to start all lift functions.
4.5 EMERGENCY LOWERING
WARNING: When the saddles carry-out an "emergency descent", the mechanical fall-proof saddle safeties are excluded.
Therefore the following operations must be carried out only:
•
When the lift does not lower due to a damage in the electric system or to an electricity failure;
•
When it is strictly necessary;
•
By a qualified technician;
•
Delimiting the area around the lift and permitting access to the operator only.
Procedure for emergency lowering:
•
Turn the Emergency Selector Switch (18 Fig. 2) to the OFF position.
•
If the lift is in the "STOP" position the safety devices will not open. The following operations will then be possible only if the lift is equipped
with a manual emergency pump to lift the saddles and release the mechanical safety stops.
•
Open the covers and manually operate the electromagnets (1 Fig. 13)to open the safety devices (2 Fig. 13).
•
For the manual lowerig operate as follows:
1) Proceed with the manual lowering of the hoist by completely removing the cover of the EV1 solenoid valve (17 Fig. 12) and slowly pressing
the pin (12 Fig. 12) to lower the hoist.
2) Finished the phase of descent, screw completely the cap (17 Fig. 14) and bring the wedges of the mechanical safety device (2 Fig. 13) back
in starting position in each column P1,P2.
DANGER. Carry out with accuracy all operations of point 2.
36
CAUTION. When you have reset the normal operating of the lift, let the unloaded lift go up and down for 2 or 3 times and check the normal
functioning of the safety devices as further described in point 5.1.
(19 Fig. 2): if pressed blocks the lift operation.
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