17
Operation
2. Setting up the electric wall saw
Fastening to the base material
The saw can only be used efficiently and safely when it
is anchored rigidly and securely to the base material.
We recommend the use of Hilti drilling machines and
anchor systems.
The rail supports must be fastened using anchors suit-
able for the base material. Observe the installation instruc-
tions given by the anchor manufacturer for setting the
anchors.
For example, when placing the Hilti HKD M12 metal
expansion anchor, a minimum distance of 20 cm to the
nearest edge must be observed (Reason: risk of split-
ting the concrete when the anchor is expanded). Gen-
erally speaking, these anchors should be set flush with
the concrete surface, or deeper if the surface is uneven
etc.
Important:
The drilling dust must always be blown out
of the anchor hole after drilling.
Alternative fastening methods such as Hilti HIT adhe-
sive anchors or threaded rods in through holes may be
used on masonry, rough stone walls or similar materi-
als.
Unevenness or variations in the level of the concrete sur-
face can be easily compensated by setting the rail sup-
port angle adjustment correspondingly.
2.1
Examples of anchor fastenings on concrete
Recommended by Hilti:
HKD-D M12
×
50, anchor hole 16 mm dia.
HKD-E M12
×
50, anchor hole 15 mm dia.
HKD-S M12
×
50, anchor hole 15 mm dia.
Galvanised screws, 8.8 grade
M 12
×
40 mm
M 12
×
70 mm
Supporting / securing concrete blocks
Concrete blocks with a weight of several hundred kg may be cut out during sawing. Secure the blocks as neces-
sary before beginning sawing, as shown in the following examples:
1.8
d
mm
1
2
3
Flush anchor
d
mm
3
4
2
1
Anchor set
deeper
쐃
Rail support
쐇
Washer
쐋
M12 screw
���
M12 nut with
collar or nut
with washer