Maktec MT91A, Instruction Manual

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18. NEVER USE Stone Cup type wheels with this
grinder.
This grinder is not designed for these types
of wheels and the use of such a product may result in
serious personal injury.
19. Be careful not to damage the spindle, the flange
(especially the installing surface) or the lock nut.
Damage to these parts could result in wheel
breakage.
20. Make sure the wheel is not contacting the
workpiece before the switch is turned on.
21. Before using the tool on an actual workpiece, let it
run for a while. Watch for vibration or wobbling
that could indicate poor installation or a poorly
balanced wheel.
22. Use the specified surface of the wheel to perform
the grinding.
23. Watch out for flying sparks. Hold the tool so that
sparks fly away from you and other persons or
flammable materials.
24. Do not leave the tool running. Operate the tool
only when hand-held.
25. Do not touch the workpiece immediately after
operation; it may be extremely hot and could burn
your skin.
26. Always be sure that the tool is switched off and
unplugged or that the battery cartridge is removed
before carrying out any work on the tool.
27. Observe the instructions of the manufacturer for
correct mounting and use of wheels. Handle and
store wheels with care.
28. Do not use separate reducing bushings or
adaptors to adapt large hole abrasive wheels.
29. Use only flanges specified for this tool.
30. For tools intended to be fitted with threaded hole
wheel, ensure that the thread in the wheel is long
enough to accept the spindle length.
31. Check that the workpiece is properly supported.
32. Pay attention that the wheel continues to rotate
after the tool is switched off.
33. If working place is extremely hot and humid, or
badly polluted by conductive dust, use a short-
circuit breaker (30 mA) to assure operator safety.
34. Do not use the tool on any materials containing
asbestos.
35. Do not use water or grinding lubricant.
36. Ensure that ventilation openings are kept clear
when working in dusty conditions. If it should
become necessary to clear dust, first disconnect
the tool from the mains supply (use non metallic
objects) and avoid damaging internal parts.
SAVE THESE INSTRUCTIONS.
WARNING:
DO NOT let comfort or familiarity with product (gained
from repeated use) replace strict adherence to safety
rules for the subject product. MISUSE or failure to
follow the safety rules stated in this instruction
manual may cause serious personal injury.
FUNCTIONAL DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function on the
tool.
Shaft lock (Fig. 1)
CAUTION:
• Never actuate the shaft lock when the spindle is
moving. The tool may be damaged.
Press the shaft lock to prevent spindle rotation when
installing or removing accessories.
Switch action (Fig. 2)
CAUTION:
• Before plugging in the tool, always check to see that
the tool is switched off.
To start the tool, move the switch lever to the I (ON)
position. To stop the tool, move the switch lever to the O
(OFF) position.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Installing side grip (handle) (optional
accessory) (Fig. 3)
Screw the side grip securely on the position of the tool as
shown in the figure.
Installing or removing wheel guard (For
depressed center wheel , multi disc)
(Fig. 4)
CAUTION:
• The wheel guard must be fitted on the tool so that the
closed side of the guard always points toward the
operator.
Mount the wheel guard with the protrusion on the wheel
guard band aligned with the notch on the bearing box.
Then rotate the wheel guard to such an angle that it can
protect the operator according to work. Be sure to tighten
the screw securely.
To remove wheel guard, follow the installation procedure
in reverse.
Installing or removing depressed center
grinding wheel/Multi-disc (Fig. 5)
WARNING:
• Always use supplied guard when depressed center
grinding wheel/Multi-disc is on tool. Wheel can shatter
during use and guard helps to reduce chances of
personal injury.
Mount the inner flange onto the spindle. Fit the wheel/disc
on the inner flange and screw the lock nut onto the
spindle.
In case of mounting a depressed center grinding wheel/
multi-disc thinner than 4 mm, place the lock nut so that the