GEAX
s.r.l
Chapter 6
OPERATING THE DRILLING RIG
1
Chapter 6
OPERATING THE DRILLING RIG
6.1 Raising the mast
6.1.1
Vertical mast alignment
To set the mast up vertically, press lever D1 on panel D with your right hand
while pressing button C1 with your left hand. The purpose is to
bring the mast from the transport configuration to its working
position (which is exclusively vertical) through a series of brief,
coordinated movements, as follows:
1.
Turn knob D2 clockwise to raise the boom by 20-30 cm.
2.
Lower lever D1 to rotate the mast by a small angle, so that its top
moves toward you.
3.
Repeat from step 3 until the mast is vertical.
4.
If the crawler is tilted to one side (within the allowable limits) move lever
D1 left or right to compensate the inclination.
When the mast is within 5° of vertical, it can be set to vertical by means of the
automatic system: The automatic vertical extension procedure is activated by
pressing buttons C1 and Pr simultaneously. Warning light S2 on (not flashing)
indicates that the goal has been achieved. Mast axis deviation from the
vertical is shown on the colour display: front and side.
The tool’s offset from the pivot cab's axis of rotation will vary according to the
final position chosen for the boom.
Working with smaller offsets (i.e., boom in a higher position) means
greater stability. In these configurations, make sure
the mast does not hit against the crawler while the cab
is rotating.
Vertical alignment should be done at the beginning, before starting to drill the
borehole, and must not be changed until completion.