Fein Slugger JMU 137 QW Series Instruction Manual page 21

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
layers 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
surfaces; it could lead to a permanent
reduction 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,
suitable FEIN fastening devices, such as vac-
uum plates or pipe drilling devices, which
are available 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
30%
2.
100%
Hand lever,
magnet
100%
1.
2.
100% 30%
en
1.
0%
30%
0%
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