Bedienungsanleitung Hitachi P20SE (Seite 8 von 34) (Deutsch, Englisch, Holländisch, Französisch, Italienisch, Spanisch)

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CAUTION

⅜ Be careful not to injure your hands.

2. Carbide blade assembly:

CAUTION

⅜ Prior to assembly, thoroughly wipe off all swarf

accumulated on the carbide blade.

(1) As shown in Fig. 10, lift set plate (B) and insert the

new carbide blade between cutter block and set

plate (B).

(2) As shown in Fig 11, mount the new carbide blade

by sliding it on the set plate (B) so that the blade

tip projects by 1mm from the end of the cutter block.

(3) As shown in Fig 12, fix the bolts at the blade holder

after blade replacement has been completed.

(4) Turn the cutter block over, and set the other side

in the same manner.

3. Adjustment of carbide blade height:

CAUTION

⅜ If the carbide blade’s heights are inaccurate after

above procedures have been completed, carry

out the procedures described below.

(1) As shown in Fig 13, use the box wrench to loosen

the three bolts used to retain the carbide blade, and

remove the blade holder.

(2) As shown in Fig 14, after removing the carbide

blade, slide set plate (B) in the direction indicated

by the arrow to disassemble set plate (B).

(3) Loosen the 2 screws holding on the carbide blade

and set plate (A), set plate (B).

(4) As shown in Fig 15, 16, press the turned surface

of set plate (A) to the wall surface b while adjusting

the carbide blade edge to the wall surface a of the

set gauge. Then, tighten them with the 2 screws.

(5) As shown in Fig 17, 18, insert a turned portion of

set plate (A) attached to set plate (B) into a groove

on the flat portion of the cutter block.

(6) As shown in Fig 19, place the blade holder on the

completed assembly and fasten it with the three

bolts. Ensure that the bolts are securely tightened.

Follow the same procedures for the opposite side

carbide blade.

BLADE ASSEMBLY AND DISASSEMBLY AND

ADJUSTMENT OF BLADE HEIGHT (FOR

RESHARPENABLE BLADE TYPE)

1. Blade disassembly:

(1) As shown in Fig. 13, use the accessory box wrench

to loosen the three bolts used to retain the blade,

and remove the blade holder.

(2) As shown in Fig. 14, slide the blade in the direction

indicated by the arrow to disassemble the blade.

CAUTION

⅜ Be careful not to injure your hands.

2. Blade assembly:

CAUTION

⅜ Prior to assembly, thoroughly wipe off all swarf

accumulated on the blade.

(1) Insert a turned portion of set plate (A) attached to

the blade into a groove on the flat portion of the

cutter block. (Fig. 17, 20)

Set the blade so that both sides of the blade protrude

from the width of the cutter block by about 1 mm

(Fig. 21)

(2) Place the blade holder on the completed assembly,

as shown in Fig. 22, and fasten it with the three

bolts. Ensure that the bolts are securely tightened.

(3) Turn the cutter block over, and set the opposite side

in the same manner.

3. Adjustment of blade height:

(1) Loosen the 2 screws holding on the blade and set

plate (A).

(2) Press the turned surface of set plate (A) to the wall

surface b while adjusting the blade edge to the wall

surface a of the set gauge. Then, tighten them with

the 2 screws. (Fig. 15, 23)

SHARPENING THE RESHARPENABLE BLADES

Use of the accessory Blade Sharpening Ass'y is recom-

mended for convenience.

1. Use of Blade Sharpening Ass'y

As shown in Fig. 24, two blades can be mounted

on the blade sharpening ass'y to ensure that the

blade tips are ground at uniform angles. During

grinding, adjust the position of the blades so that

their edges simultaneously contact the dressing

stone as shown in Fig. 25.

2. Blade sharpening intervals

Blade sharpening intervals depend on the type of

wood being cut and the cutting depth. However,

sharpening should generally be effected after each

500 meters of cutting operation.

3. Dressing Stone

When a water dressing stone is available, use it

after dipping it sufficiently in water since such a

dressing stone may be worn during grinding works,

flatten the upper surface of the dressing stone as

often as necessary.

MAINTENANCE AND INSPECTION

1. Inspecting the blades:

Continued use of dull or damaged blades will result

in reduced cutting efficiency and may cause over-

loading of the motor. Sharpen or replace the blades

as often as necessary.

2. Handling

CAUTION

⅜ The front base, rear base, and cutting depth

control knob are precisely machined to obtain

specifically high precision. If these parts are

roughly handled or subjected to heavy mechani-

cal impact, it may cause deteriorated precision

and reduced cutting performance. These parts

must be handled with particular care.

3. Inspecting the mounting screws:

Regularly inspect all mounting screws and ensure

that they are properly tightened. Should any of the

screws be loose, retighten them immediately. Fail-

ure to do so could result in serious hazard.

4. Inspecting the carbon brushes (Fig. 26)

The motor employs carbon brushes which are con-

sumable parts. Since an excessively worn carbon

brush can result in motor trouble, replace the carbon

brushes with new ones having the same carbon

brush No. shown in the figure when it becomes

worn to or near the “wear limit”. In addition, always

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