Setting / Adjustment; Mains Connection; Chip Extraction; Tool Change - Mafell NFU 50 Manual De Instrucciones Original

mill whatever gets in its way. Keep in mind the
tool's coasting time.
- Do not clamp the mobile guard or remove any
protective parts.
- Prior to every use, check whether the lower
guard is closing properly. Do not use the
machine if the lower guard is not freely
movable and does not close immediately.
Never clamp or tie down the lower guard in an
open position. If the saw is dropped inadvertently,
the lower guard can get bent. Open the guard with
the pre-feed lever 1 (Fig. 3) and ensure that it
moves freely and touches neither the tool nor other
parts irrespective of the milling angle and depth.
- Check the function of the spring for the lower
guard. Have the machine serviced prior to use
if the lower guard and spring do not work
properly. Damaged parts, sticky deposits or
accumulated chips will cause the lower guard to
operate with a delay.
- Only manually open the lower guard for special
types of milling, such as angled milling. Open
the lower guard using the pre-feed lever and
release the lever as soon as the tool has
penetrated the workpiece. During all other milling
work, the lower guard is to operate automatically.
Instructions on service and maintenance:
- Regularly cleaning the machine, especially the
adjusting devices and guides, constitutes an
important safety factor.
- Only original MAFELL spare parts and accessories
may be used. Otherwise the manufacturer will not
accept any warranty claims and cannot be held
liable.
4

Setting / Adjustment

4.1 Mains connection

Prior to commissioning make sure that the mains
voltage complies with the operating voltage stated on
the machine's rating plate.

4.2 Chip extraction

Danger
Substances that are harmful to
health must be taken up with an M-
suction device.
Connect the machine to a suitable external dust
extractor during all work generating a considerable
amount of dust. The air velocity must be at least 20
m/s (65.6 ft / sec.).
The inside diameter of the hose connector 3 (Fig. 1)
is 58 mm (2 9/32 in.).

4.3 Tool change

Danger
The maximum permissible speed
(indicated on the tool) must not be
exceeded!
The operating speed must not
exceed the maximum speed
indicated on the tool.
Ensure the correct direction of
rotation!
Clamp the tool so that it cannot
become loose during operation.
The tightening torque is approx. 10
Nm.
The blades must touch neither
each other nor any clamping
pieces.
Ensure that the machine is clean
before changing tools. Clamping
surfaces must be free of dirt.

Pull the plug before changing tools.

Press the push-button 2 (Fig. 2) and pull the
locking lever 19 upwards. The shift lever is now
locked and the shaft lock activated. You can
open the mobile guard 28 (Fig. 3) by means of
the pre-feed lever 1 (Fig. 3) or manually.

Use the hexagon screwdriver 23 (Fig. 7) to
unscrew the cylinder head screw anticlockwise,
remove front flange 27 (Fig. 3) and milling head
26 (Fig. 3).

Clean chips and dust off the spindle and
clamping surfaces and attach the tool. When
doing so ensure that both drive pins on the
spindle engage in both bores on the tool.

Insert the cylinder head screw with flange and
tighten firmly with the hexagonal screwdriver 23
in clockwise direction (Fig. 7).

Remove hexagonal screwdriver 23 (Abb. 7).
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