Martec MT941 Manual De Instrucciones página 5

ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing or removing abrasive belt (Fig. 2 & 3)
Pull the lever all the way out and install the belt over the
rollers, and then return the lever to the original position.
CAUTION:
• When installing the belt, make sure that the direction of
the arrow on the back of the belt corresponds to the
one on the tool itself.
Installing or removing step (Fig. 4)
Using step with the tool turned upside down allows sand-
ing another way of use. Remove the knob and then place
the step on the place the knob was seated and secure it
with knob.
Adjusting belt tracking (Fig. 5)
While the belt is running, use the adjusting knob to center
the belt tracking. Failure to do so can result in frayed belt
edges and wear on the sander frame.
Dust bag (Fig. 6)
The use of the dust bag makes sanding operations clean
and dust collection easy. To attach the dust bag, fit it onto
the dust spout.
When the dust bag is about half full, remove the dust bag
from the tool and pull the fastener out. Empty the dust
bag of its contents, tapping it lightly so as to remove par-
ticles adhering to the insides which might hamper further
collection.
OPERATION
Sanding operation (Fig. 7)
CAUTION:
• The tool should not be in contact with the workpiece
surface when you turn the tool on or off. Otherwise a
poor sanding finish or damage of the belt may result.
Hold the tool firmly with both hands. Turn the tool on and
wait until it attains full speed. Then gently place the tool
on the workpiece surface. Keep the belt flush with the
workpiece at all times and move the tool back and forth.
Never force the tool. The weight of the tool applies ade-
quate pressure. Excessive pressure may cause stalling,
overheating of the motor, burning of the workpiece and
possible kickback.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Replacing carbon plate (Fig. 8)
Replace an carbon plate on the cork rubber plate when it
is worn down. Remove screws on the strap washer and
the worn carbon plate, place a new carbon plate and
then secure it with the screws.
Replacing carbon brushes (Fig. 9 & 10)
Remove and check the carbon brushes regularly.
Replace them when they are worn down to the limit
mark. Keep the carbon brushes clean and free to slip in
the holders. Both carbon brushes should be replaced at
the same time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
Noise
The typical A-weighted noise level determined according
to EN60745:
Sound pressure level (L
Sound power level (L
Uncertainty (K): 3 dB (A)
Wear ear protection
Vibration
The vibration total value (tri-axial vector sum) determined
according to EN60745:
Work mode: sanding metal plate
Vibration emission (a
Uncertainty (K): 1.5 m/s
• The declared vibration emission value has been mea-
sured in accordance with the standard test method and
may be used for comparing one tool with another.
• The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING:
• The vibration emission during actual use of the power
tool can differ from the declared emission value
depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the oper-
ator that are based on an estimation of exposure in the
actual conditions of use (taking account of all parts of
the operating cycle such as the times when the tool is
switched off and when it is running idle in addition to
the trigger time).
): 87 dB (A)
pA
): 98 dB (A)
WA
2
): 2.5 m/s or less
h
2
ENG905-1
ENG900-1
ENG901-1
5