GEAX
s.r.l
Chapter 6
OPERATING THE DRILLING RIG
3
fig.6.2.1.2
6.
Stop the rotary, releasing the pedal R, and stop the crowd force moving
joystick B to its central (neutral) position;
7.
Make rotary head rotate anticlockwise to unlock the kelly bar;
8.
Pull back joystick A to lift the tool to the max download height, slightly
before the mechanical stop;
9.
Move joystick B to right to move the rotary to its highest position;
10.
Move joystick A right or left (depending on which side the point of
discharge is) to rotate the cab until the bucket is over the discharge
point;
11.
By moving pedal R right-and-left while at the same time pressing pedal
P2, the rotary head will rapidly turn clockwise-and-anticlockwise,
alternatively, to unload the tool;
12.
Remove the kelly bar block
fig.6.2.1.3
;
fig.6.2.1.3
13.
Use joystick A to turn the cab in the opposite direction and bring the tool
over the borehole;
the first time, after removing the kelly bar block, the alignment
operation might require small movements of the tracks;
