USER MANUAL
AcuDrill
DRILLING MACHINE
Edition: June 2016
Revision: No. 4
MODE OF USE
-
23
WARNING !
It is recommended to avoid excess feed, especially in the pilot drill work
phase, given that the drill could break specially at low revolutions.
If a length longer than the machine’s travel is necessary, the drilling can be continued by
moving the retention mechanism to the next opening above the one it was fastened to
on the shaft (unless the highest anchoring has been in use). See
Figure 24
.
3.3.7
Disassembly of the machine and accessories:
Once the mains has been perforated, move the chuckshaft up by
turning the machine body counterclockwise until the end travel
mechanism is activated.
Continue withdrawing the chuckshaft by pulling the retention
mechanism out of the opening where it is located. To do so, first place
the ratchet wrench on the end shaft ½” square and push down to
facilitate the retention mechanism removal. Then, take control with
the ratchet wrench of the moving up of the chuckshaft due to the
pipeline pressure (refer to
Figure 27
). The chuckshaft will fully rise
until the hole saw is positioned on the upper part of the dome.
Figure 27
WARNING !
Due to pipeline internal pressure the chuckshaft will
be moved upwards. Take the necessary safety
cautions to avoid any sort of accident during this
operation.
Carefully open the venting valve to remove chip residues. Next,
close the valve again.
Then switch the intermediate valve to the CLOSED position.
Disassemble the saddle adapter and drilling machine using the
spanner designed for this purpose.
The coupon resulting from drilling the mains will have remained
trapped by the pilot drill’s coupon retainer mechanism. To extract
the coupon, disassemble the drill by loosening the Allen fastening
stud. Remove the coupon through the upper part of the drill and fit
it to the arbor hole saw again. See
Figure 28
.
Figure 28
3.3.8
Connecting the branch connection:
Connect the branch connection to the appropriate outlet for the intermediate valve.
Retighten the branch connection fasteners.
