USER MANUAL
AcuDrill
DRILLING MACHINE
Edition: June 2016
-
MODE OF USE
Revision: No. 4
34
3.6.6
Drilling the mains:
Once the pressure test is complete, lower the chuckshaft by rotating the machine body
(with your hand in the knurled area), until the drill makes contact with the pipe (the
chuckshaft will have risen depending on the contact force: see measurement
a
of
Figure
50
). At this point, withdraw the tip of the drill from the pipe by approximately one turn.
Now begin drilling the mains by activating the chuckshaft using the ratchet wrench, if
drilling is manual, or through the hydraulic or pneumatic swivel gear.
SWIVEL GEAR
If a hydraulic or pneumatic swivel gear (pneumatic, non-impact tool) is
used, the following considerations must be taken into account:
C
The rotation speed must be that indicated by the hole saw manufacturer.
C
The adapter components may be supplied by Acuster Global, SL.
C
The usage and safety recommendations given by the manufacturer must
be followed.
Feed is achieved by making the machine body rotate (with
the hand placed in the knurled area). The recommended
distance produced by the feed is
a
= 1 or 2 mm (see
Figure
40
) when drilling with the pilot drill. Once perforated with
the drill, remember that distance
a
will be increased by the
internal driving pressure. The feed limit is indicated by a
mechanized line on the fastening bush shaft. If due to an
excess of compression (feed + internal pressure) this line
becomes visible (see
Figure 40
), turn slightly in the
opposite direction to return to the previously-recommended
distance.
Ensure that the drilling is complete by making one or two
additional turns.
Figure 50
WARNING !
It is recommended to avoid excess feed, given that the drill could break
specially at low revolutions.
3.6.7
Plugging the fitting:
Once the mains has been perforated, move the chuckshaft up by turning the machine
body counterclockwise until actuate the end travel mechanism.
On that position, the chuckshaft will fully rise until the drill is positioned on the upper part
of the dome.
Put in the CLOSE position the sandwich valve to allow the disassembling of the drilling
machine and later internal plug installation.
WARNING !
Ensure that the gate of the sandwich valve does not touch the drill when
closing to prevent damage that could occur in the gate.
Carefully open the venting valve to remove chip residues and depressurize. Close the
again the venting valve.
