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Инструкция по эксплуатации Страница: 12

Hitachi DH22PH [12/84] English

English

6. Hammering only

This rotary hammer can be set to hammering only

mode by turning the change lever to the

mark

(Fig. 11).

(1) Mount the bull point or cold chisel.

(2) Set the change lever to middle of

mark and

mark (Fig. 12).

The rotation is released, turn the grip and adjust the

cold chisel to desired position (Fig. 13).

(3) Turn the change lever to

mark (Fig. 11).

Then bull point or cold chisel is locked.

7. Using depth gauge (Fig. 14)

(1) Loosen the knob on the side handle, and insert the

depth gauge into the mounting hole on the side handle.

(2) Adjust the depth gauge position according to the

depth of the hole and thighten the knob securely.

8. How to use the drill bit (taper shank) and the taper

shank adapter

(1) Mount the taper shank adapter to the rotary hammer

(Fig. 15).

(2) Mount the drill bit (taper shank) to the taper shank

adapter (Fig. 15).

(3) Turn the switch ON, and drill a hole in prescribed

depth.

(4) To remove the drill bit (taper shank), insert the cotter

into the slot of the taper shank adapter and strike the

head of the cotter with a hammer supporting on a

rests (Fig. 16).

LUBRICATION

Low viscosity grease is applied to this rotary hammer so

that it can be used for a long period without replacing

the grease. Please contact the nearest service center for

grease replacement when any grease is leaking form

loosened screw.

Further use of the rotary hammer with lock off grease

will cause the machine to seize up reduce the service life.

CAUTION

A special grease is used with this machine, therefore,

the normal performance of the machine may be badly

affected by use of other grease. Please be sure to let

one of our service agents undertake replacement of

the grease.

MAINTENANCE AND INSPECTION

1. Inspecting the drill bits

Since use of a dull tool will cause motor

malfunctioning and degraded efficiency, replace the

drill bit with new ones or resharpen them without

delay when abrasion is noted.

2. 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. Failure

to do so could result in serious hazard.

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. 17)

The motor employs carbon brushes which are

consumable parts. Since an excessively worn carbon

brush can result in motor trouble, replace the carbon

brush with a new one having the same carbon brush

No. shown in the figure when it becomes worn to or

near the “wear limit”. In addition, always keep carbon

brushes clean and ensure that they slide freely within

the brush holders.

5. Replacing a carbon brush (Fig. 18)

䡬 Disassembling

(1) Loosen the three screws on the handle cover, and

remove the handle cover.

(2) Lift out the brush holder together with the carbon

brush, while being very careful not to forcibly pull

the lead wires within the brush holder.

(3) Withdraw the brush terminal, and remove the carbon

brush from the brush holder.

䡬 Reassembling

(1) Place a new carbon brush into the brush holder, and

connect the brush terminal to the carbon brush.

(2) Return the brush holder and other parts to their

original positions, as illustrated in Fig. 18.

(3) Place the lead wire in the specified position. Be very

careful not to allow the lead wire to contact the

armature or rotating parts of the motor.

(4) Replace the handle cover, while being careful to

ensure it does not pinch the lead wire, and secure it

firmly with the three screws.

CAUTION

Should the lead wire be pinched by the handle cover

or come in contact with the armature or rotating

parts of the motor, a serious danger of electric shock

to the operator will be created. Excercise extreme

caution in disassembling and reassembling the motor,

following the above procedures exactly.

Do not attempt to disassemble any parts other than

those necessary to effect replacement of the carbon

brush.

6. Service parts list

CAUTION

Repair, modification and inspection of Hitachi Power

Tools must be carried out by an Hitachi Authorized

Service Center.

This Parts List will be helpful if presented with the

tool to the Hitachi Authorized Service Center when

requesting repair or other maintenance.

In the operation and maintenance of power tools, the

safety regulations and standards prescribed in each

country must be observed.

MODIFICATIONS

Hitachi Power Tools are constantly being improved

and modified to incorporate the latest technological

advancements.

Accordingly, some parts may be changed without

prior notice.

GUARANTEE

We guarantee Hitachi Power Tools in accordance with

statutory/country specific regulation. This guarantee does

not cover defects or damage due to misuse, abuse, or

normal wear and tear. In case of complaint, please send

the Power Tool, undismantled, with the GUARANTEE

CERTIFICATE found at the end of this Handling

instruction, to a Hitachi Authorized Service Center.

01Eng_DH22PH_EE 1/19/09, 15:0111

Hitachi DH22PH [12/84] English

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