Maintenance And Inspection - Hitachi CM 5SB Instructions De Sécurité Et Mode D'emploi

English
CAUTION:
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Always check the diamond wheel before starting
work. Never use a diamond wheel which is
cracked, broken or bent.
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Do not apply water or coolant to the diamond
wheel.
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Start cutting only when diamond wheel reaches
its maximum speed.
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If the diamond wheel seizes or there is any
abnormal noise, immediately turn the power off.
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Never use the diamond wheel to cut zigzag or
curved lines. Never use the side surface of the
diamond wheel. Never use to perform inclination
cutting.

MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance
and inspection.
Using cracked, deformed or damaged wheels can lead to wheel breakage and resulting serious
injury.
1. Inspecting the diamond wheel
Since use of a dull diamond wheel will cause motor
malfunctioning and degraded efficiently, replace
with a new one without delay when abrasion is
noted.
2. Inspecting the screws
Regularly inspect all screws and ensure that they
are fully tightened. Should any of the screws be
loosened, retighten them immediately.
WARNING: Using this cutter with loosened
screws is extremely dangerous.
3. Maintenance of the motor
The motor unit winding is the very "heart" of the
power tool. Exercise due care to ensure the
winding does not become damaged and/or wet
with oil or water.
4. Inspecting the carbon brushes (Fig. 7)
The motor employs carbon brushes which are
consumable parts. Replace the carbon brush with
a new one when it becomes worn to its wear limit.
Always keep carbon brushes clean and ensure that
they slide freely within the brush holders.
10
G
If excessive force is applied to the diamond wheel
to make it align with the cutting line during
cutting, this might not only overload the motor
and cause burn damage but may also overheat
the diamond wheel and shorten the service life.
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Take care not to allow the power cord to come
into contact with the diamond wheel during
operation.
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When the work is completed, turn the power off
and disconnect the power plug from the
receptacle.
Wear limit
0.67" (17mm)
CAUTION:
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Using this cutter with a carbon brush which is
worn in excess of the wear limit will damage the
motor.
NOTE: Use HITACHI carbon brush No. 88 indicated
in Fig. 7.
Replacing carbon brushes:
<Disassembly>
(1) Loosen the D4 tapping screw retaining the tail
cover and remove the tail cover.
(2) Use the auxiliary hexagonal wrench or small
screwdriver to pull up the edge of the spring that
is holding down the carbon brush. Remove the
edge of the spring toward the outside of the brush
holder.
No. of carbon
brush
88
0.24" (6mm)
Fig. 7