Manual Hitachi CM5SB (page 9 of 52) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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English

CUTTING

1. Cutting procedures (Fig. 4)

(1) Place this tool on the material to be cut and align

the cutting line and the diamond wheel.

The cutting can be performed smoothly if you cut

straight ahead on the cutting line in the initial cut.

(2) Turn on the switch when the diamond wheel is not

touching the material to be cut.

2. Precautions immediately after finishing operation

After switching off the machine, do not put it down

until the depressed center wheel has come to a

complete stop. Apart from avoiding serious accidents,

this precaution will reduce the amount of dust and

swarf sucked into the machine.

CAUTION

䡬 Always check the diamond wheel before starting

work. Never use a diamond wheel which is cracked,

broken or bent.

䡬 Do not apply water or coolant to the diamond

wheel.

䡬 Start cutting only when diamond wheel reaches its

maximum speed.

䡬 If the diamond wheel seizes or there is any abnormal

noise, immediately turn the power off.

䡬 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.

䡬 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.

䡬 Secure the workpiece. A workpiece clamped with

clamping devices or in a vice is held more securely

than by hand.

䡬 Take care not to allow the power cord to come into

contact with the diamond wheel during operation.

䡬 When the work is completed, turn the power off

and disconnect the power plug from the receptacle.

MAINTENANCE AND INSPECTION

1. Inspection the diamond wheel

A worn diamond wheel overloads the motor and

reduces working efficiency. Replace with a new one.

2. Diamond wheel clogging

The rate of wear of the diamond layer cutting edge

will vary depending on the type of material being

cut, the cutting speed, etc. In general, materials

which produce granular cutting particles may scrape

the bodying agent and hasten the wear of the

diamond layer. On the other hand, materials which

produce powdery cutting particles may cause

clogging of the diamond layer which will reduce

cutting efficiency. When clogging occurs, additional

force applied in an attempt to increase cutting speed

will sometime cause sparks to appear around the

circumference of the diamond wheel. In such a case,

stop using the cutter and carefully inspect the cutting

edge by rubbing it with your fingers. If the diamond

layer feels smooth (no roughness or abrasiveness),

it is clogged with dust and must be “dressed”.

4. Checking and installing the diamond wheel

Check the diamond wheel is a specified one and

is not cracked, broken or bent. Check the diamond

wheel is installed securely. For installation, refer to

“Installing/removing diamond wheel”.

5. Fitting and adjusting the dust collection cover (Fig. 1)

The dust collection cover is a protective device to

prevent injury should the diamond wheel shatter

during operation. Ensure that the cover is properly

fitted and fastened before commencing cutting

operation. By slightly loosening the setting screw,

the dust collection cover can be turned and set at

any desired angle for maximum operational

effectiveness. Ensure that the setting screw is

thoroughly tightened after adjusting the dust

collection cover.

6. Confirm the spindle lock mechanism

Confirm that the spindle lock is disengaged by

pushing push button two or three times before

switching the power tool on (See Fig. 1).

7. Cutting depth adjustment (Fig. 2)

Lowering the wing nut will loosen and raising it will

tighten.

Loosening the wing nut and moving the slide guide

will allow adjustment of the cutting depth.

CAUTIONS

Leaving the wing nut loosened may result in injury.

Securely tighten the wing nut after adjusting the

cutting depth.

INSTALLING DUST COLLECTION HOSE

When cutting a material which generates cutting dust,

use the dust collection hose as follows:

(1) Remove the rubber cap and install the accessory

adaptor. (Fig. 3)

(2) Install the dust collection hose for the power tool

in the accessory adaptor. (Fig. 3)

CAUTION

Always install a rubber cap on the dust collection

adaptor when the dust collection hose is not used.

INSTALLING/REMOVING DIAMOND WHEEL

1. Installation

(1) Remove the cover (A).

(2) Wipe the cutting dust from the spindle and washers.

(3) Make sure the rotation direction of the diamond

wheel conforms to the direction indicated on the

gear case and install the diamond wheel as shown

in Fig. 1.

(4) Press the lock pin and secure the spindle. Tighten

the wheel nut adequately with the provided wrench.

(Fig. 1)

NOTE

Always use the provided wrench to secure the wheel

nut.

2. Removal

Remove the wheel nut with the provided wrench

and remove the diamond wheel. (Fig. 1)

01Eng_CM5SB_WE 1/22/13, 12:16 PM8

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Hitachi CM5SB Manual

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