ORTECO IIa Series, Use And Maintenance Manual

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UN21-0159EI
G2
OFF
C
B
1
F
G
A
F0
D
E
D
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English language Use and maintenance
ADJUSTMENT INFORMATION
5
Adjusting the “laser device” that stops the hammer’s down stroke
The “laser device” is used to drive piles into the ground or make holes in the ground at the
same depth compared to a fixed reference (emitter) and automatically stops the descent
of the percussion hammer when the preset depth is reached (pile driving or hole depth),
independently from the type of ground.
The same pile driving and hole depth is obtained by using a laser emitter that acts as fixed
reference point and a receiver fitted on the pile driver.
Adjusting the pile driving depth
Proceed as outlined below.
1) Rotate the selector switch (A) to “OFF” position.
2) Drive the pile into the ground at the required depth.
3) Stop the percussion and rest the hammer on the pile head.
4) Activate the emitter of the “laser device”.
5) Turn the selector (A) to the “laser” position (1) to activate the device.
6) Position the laser emitter (B) at a distance of at least 100 - 150 m from the pile-driver.
7) Adjust the laser emitter (B) at a height from the ground similar to that of the receiver
and is such a way that there are no obstacles between the emitter and the receiver
(C).
8) Loosen the locking levers (D).
9) Slide the receiver (C) along the pipe to intercept the laser ray until the green lights (E)
light up.
10) Tighten the levers (D) to lock the receiver in the required position.
11) Drive another pile into the ground until the “laser device” automatically interrupts the
pile driving operation.
12) Move lever (F) to (F0) position.
13) Move the lever (G) to position (G2) to lift the percussion hammer.
14) Check the correct pile driving depth.
If the driving depth is not correct repeat the adjustment to correct the error.
- Turn the selector (A) to the “OFF” position to deactivate the device.