OBJ_BUCH-0000000355-002.book Page 21 Tuesday, March 12, 2019 4:36 PM
For switching the magnet ON
(JMU 137 PQW (**)) (figure 12).
Pay attention that the set-up surface for
the magnetic foot is flat, clean, rust-free
and ice-free. Remove varnish, putty/filler lay-
ers and other materials. Prevent an air gap
between the magnetic foot and the set-up
surface. The air gap reduces the magnetic
holding power.
Do not operate this machine on hot sur-
faces; it could lead to a permanent reduc-
tion of the magnetic holding power.
When working, always use the magnetic
foot; pay attention that the magnetic
holding power is sufficient:
– When the green button on the control
panel lights up permanently, the magnetic
holding power is sufficient and the machine
can be operated with normal feed.
– When the Magnet button on the control
panel flashes, the magnetic holding power
possibly is insufficient and the machine
must be operated with reduced feed.
When working non-magnetic materials, suit-
able FEIN fastening devices, such as vacuum
plates or pipe drilling devices, which are avail-
able as accessories, must be used. Observe
the corresponding operating instructions for
these.
Even when working on steel materials where
the material thickness is below 12 mm, the
workpiece must be made thicker with an
additional steel plate in order to ensure the
magnetic holding power.
The magnetic holding power can be switched
step by step with the hand lever.
For positioning, set the hand lever to the
30 % position; to switch the magnet on, set
the hand lever to the 100 % position.
Fig. 12
1.
30%
2.
0%
100%
30%
Hand lever,
magnet
100%
1.
2.
0%
100%
30%
en
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