– Tighten the hexagon nut on the guide rail by means
of the single-sided spanner.
– Install the safety guard back in its place.
– Install the splinter guard (16) and fix it by means
of the screw (15) (remove the protective foil first).
Working with the chain
mortiser
The weight of the chain mortiser is favorably distributed
and with its ergonomically designed handles, it can be
easily guided to the workpiece in any position. This electric
tool is operable as delivered. Before starting any operation,
the chain cutting tool, the lateral guide and the safety
guard must be checked to make sure that they show no
damage and they are fitted correctly.
First adjust the required distance between the mortice and
the stopping face of the workpiece using the adjustable
lateral guide (12). For this adjustment, first loosen the
locking lever (13). Then set the required distance between
the mortice and the stopping face, depending on the width
of the installed chain cutter, according to the marking on
the scale in the sight window (17). Then retighten the
locking lever. Mortising depth can be adjusted progressively
by means of the depth gauge (10). For this adjustment,
first loosen the locking lever (11), slide the depth stop
to the required position and retighten the locking lever.
Hold the electric tool with both hands. Place the tool
above the required mortice spot, so that the lateral guide
touches the stopping face of the workpiece. The mortiser
can be aligned to the vertical position by means of the
built-in tubular spirit level (14). To switch the electric tool
on, the interlock which prevents unintentional starting
must be released first. To do this, press the lock-off
button (2) and the switch actuator (1) on the handle
at the same time.
Final quality of the mortice depends on feed speed, charac-
teristics of the workpiece and sharpness of the chain
cutter. For this reason, choose appropriate cutting pressure
or feed speed matching the sort of mortised wood, and cut
steadily down to the required depth. In any case, sudden
and jerky movements must be avoided and the feed speed
remained stable.
Remove the electric tool from the mortice while it is still
running, without tilting. Always use sharp chain cutters.
Blunt cutting tools invite excessive stress of the guide
rail and lead to early wear or damage. During heavy-duty
usage, it is advisable to check the bearing of the roller
on the guide rail and avoid its overheating.
After the work is completed, put the electric tool aside
only after the motor has come to a complete standstill -
danger of serious accident!
When working with a new chain cutter, its tension must
be checked after 10 cutting operations at the latest
GB
(see the section „Tensioning of the chain cutter").
Important: The chain cutter is a rotating tool. Cutting
edges of the chain cutter can work both during descent
and ascent. See the direction of rotation marked with
the arrow on the safety guard.
Side thrust of the cutting tool must always be compensated
by means of the lateral guide. Danger of accident!
(Fig. 1, 2, 3, 5)
For this reason, never work without the lateral guide or
use one of the guide frames. If a large mortice is made by
plunging the chain cutter into the workpiece side by side,
it is recommended to proceed in accordance with Figure 5.
Chain cutters
Use perfectly sharpened chain cutters only. This electric
tool is delivered with the chain cutter designed for
mortising. Wide range of chain cutters for cutting
grooves is available.
Chain cutters with pitches B or C are particularly designed
for precise works and require approximately double time
for mortising, compared to A-pitch chains.
The guide rail which holds the chain cutter must fit
the tool holder of the mortising machine exactly, with
no clearance.
Chain cutters wider than 30 mm must not be used.
The drive sprocket, the chain cutter and the guide rail
together represent the complete chain cutting tool. Dimen-
sions of these parts must correspond to each other exactly.
Cutting tool combinations which have been randomly put
together are unacceptable and must not be used, since
their usage invites the risk of serious accidents!
Replacement of chain cutters
Before replacement of the chain cutter, remove the plug
from the mains socket.
– Loosen the hand screws (3) of the safety guard (4) and
remove the safety guard.
– Loosen the locking nut (6) and the chain tensioning
screw (7).
– Unscrew the hexagon nuts (5) both on the guide rail
and on the drive spindle. To loosen the hexagon nut
on the drive spindle, lock the spindle by means of the
hexagon key SW 6 and loosen the hexagon nut using
the single-ended spanner SW 19.
– Remove the complete chain cutting tool.
– Place the new chain cutter on the guide rail. Make
absolutely sure that orientation of cutting edges of the
chain correspond with the direction of rotation marked
with arrows on the safety guard.
– Replace the complete chain cutting tool in its position.
The drive sprocket must be turned such that the driving
pin on the spindle of the electric tool engages in the
groove of the drive sprocket.
– Only use chain cutters fitting to the size of drive sprocket
12
(Fig. 1, 2, 4)