USER MANUAL
AcuDrill
DRILLING MACHINE
Edition: June 2016
-
MODE OF USE
Revision: No. 4
20
3.3
DRILLING UNDER PRESSURE OVER
CA-R
BRANCH CONNECTIONS
3.3.1
Initial operations:
Before performing the drilling operations, ensure that you have all
the necessary material and that it is in good condition.
C
Complete drilling machine.
C
Arbor hole saw (with pilot drill installed) matching the size of
the hole saw to be used.
C
Hole saw of the diameter to be used.
C
Adapter (with washer) of the diameter of the thread matching
the saddle to be installed.
C
Intermediate full bore valve, of the size corresponding to the
saddle’s threaded outlet. Adapter fitting (if necessary).
C
Tools: 3 mm Allen key, adapter spanner, 17 mm open-end
spanner, ½” ratchet wrench (manual drilling) and electrical or
pneumatic swivel gear with chuckshaft adaptation elements
(if applicable).
3.3.2
Branch connection installation:
The installation of the
CA-R
branch connection is performed placing
the saddle and gasket on the pipe. Next, fasten the clamp between
the saddle and mains (the hinge joints should remain above the
saddle), equally tightening the two fastening bolts to ensure
tightness.
For more information, refer to the Fitting Instructions
included with the accessory.
3.3.3
Assembly of the cutoff valve:
Figure 20
Install an intermediate valve (not supplied with the equipment).
Screw it directly (or through an adapter fitting) over the
CA-R
branch connection previously installed on the line. Put the valve
actuation lever in OPEN position.
WARNING !
The total height (
h
) of the branch connection
selected intermediate valve and fitting (once
assembled) must not exceed 210 mm. See
Figure 21
.
Figure 21
