Hitachi PR-25B, Handling Instructions Manual

7

English

○

 

Shank

 

 

(for

 

rammer

 

and

 

bush

 

hammer)

 

(Code

 

No.

 

955186)

• Bush

 

hammer

 

+

 

Shank

•

 

Rammer

 

+

 

Shank

○

 

Scoop

 

(for

 

digging

 

ground

 

in

 

various

 

foundation

 

work)

 

(Code

 

No.

 

944967)

○

 

Rotary

 

hammer

 

oil

 

(one

 

liter)

 

(Code

 

No.

 

955009)

Optional

 

accessories

 

are

 

subject

 

to

 

change

 

without

 

notice.

APPLICATIONS

○

 

Drilling

 

holes

 

in

 

concrete

○

 

Drilling

 

anchor

 

bolt

 

holes

○

 

Crushing

 

concrete,

 

chipping,

 

digging,

 

and

 

squaring

 

(by

 

applying

 

optional

 

accessories)

 

(Application

 

Examples)

 

Installation

 

of

 

piping

 

and

 

wiring,

 

sanitary

 

facility

 

installation,

 

machinery

 

installation,

 

water

 

supply

 

and

 

drainage

 

work,

 

interior

 

jobs,

 

harbor

 

facilities

 

and

 

other

 

civil

 

engineering

 

work.

PRIOR TO OPERATION

1. Power source 

 

Ensure

 

that

 

the

 

power

 

source

 

to

 

be

 

utilized

 

conforms

 

to

 

the

 

power

 

requirements

 

speci

fi 

ed

 

on

 

the

 

product

 

nameplate.

2. Grounding 

 

This

 

tool

 

should

 

be

 

grounded

 

while

 

in

 

use

 

to

 

protect

 

the

 

operator

 

from

 

electric

 

shock.

 

The

 

tool

 

is

 

equipped

 

with

 

a

 

three

 

conductor

 

cord

 

and

 

grounding

 

type

 

plug

 

to

 fi 

t

 

the

 

proper

 

grounding

 

type

 

receptacle.

 

The

 

green

 

(or

 

green

 

and

 

yellow)

 

conductor

 

in

 

the

 

cord

 

is

 

the

 

grounding

 

wire.

 

Never

 

connect

 

the

 

green

 

(or

 

green

 

and

 

yellow)

 

wire

 

to

 

a

 

live

 

terminal.

3. Power switch 

 

Ensure

 

that

 

the

 

power

 

switch

 

is

 

in

 

the

 

OFF

 

position.

 

If

 

the

 

plug

 

is

 

connected

 

to

 

a

 

power

 

receptacle

 

while

 

the

 

power

 

switch

 

is

 

in

 

the

 

ON

 

position,

 

the

 

power

 

tool

 

will

 

start

 

operating

 

immediately,

 

which

 

could

 

cause

 

a

 

serious

 

accident.

 

4. Extension cord 

 

When

 

the

 

work

 

area

 

is

 

removed

 

from

 

the

 

power

 

source,

 

use

 

an

 

extension

 

cord

 

of

 

su

ffi

  

cient

 

thickness

 

and

 

rated

 

capacity.

 

The

 

extension

 

cord

 

should

 

be

 

kept

 

as

 

short

 

as

 

practicable.

5.  Feeding oil (refer to the paragraph on oil feeding, 

page 7)

 

Prior

 

to

 

using

 

the

 

power

 

tool,

 

remove

 

the

 

oil

 

gauge

 

and

 

do

 

not

 

fail

 

the

 

oil

 

tank

 

with

 

the

 

provided

 

oil.

 

(Although

 

the

 

oil

 

tank

 

is

 

built

 

in,

 

it

 

contains

 

only

 

a

 

small

 

volume

 

of

 

oil

 

when

 

shipped

 

from

 

the

 

Hitachi

 

Works.)

6.  Mounting a tool

NOTE

 

When

 

handling

 

drill

 

bits,

 

bull

 

point,

 

cold

 

chisel

 

and

 

other

 

accessories,

 

Hitachi

 

standard

 

tools

 

are

 

recommended

 

for

 

better

 

operation.

PR-25B

(1)

 

Raise

 

the

 

retainer

 

and

 

insert

 

the

 

shank

 

portion

 

of

 

a

 

drill

 

bit

 

into

 

the

 

hexagonal

 

hole

 

on

 

the

 

front

 

cover

 

until

 

it

 

reaches

 

the

 

extremity.

 

(

Fig. 1

-

1

)

(2)

 

By

 

slightly

 

tapping

 

the

 

top

 

of

 

the

 

bit

 

holder

 

with

 

a

 

wooden

 

mallet,

 

replace

 

the

 

bit

 

holder

 

to

 

grip

 

the

 

bit

 fi 

rmly.

PR-38E

(1)

 

Pushing

 

the

 

stopper

 

to

 

arrow

 

A

 

direction,

 

turning

 

the

 

retainer

 

to

 

arrow

 

B

 

direction.

 

After,

 

insert

 

the

 

tool

 

shank

 

into

 

the

 

hexagon

 

hole

 

on

 

the

 

front

 

cover.

 

(

Fig. 1

-

2

)

(2)

 

Pushing

 

the

 

stopper

 

to

 

arrow

 

A

 

direction,

 

turning

 

the

 

retainer

 

to

 

arrow

 

B

 

in

 

the

 

opposite

 

direction.

 

After,

 

apart

 

the

 

stopper.

NOTE

 

When

 

dismounting

 

the

 

bull

 

points,

 

reverse

 

the

 

procedures

 

described

 

above.

HOW TO USE THE ROTARY HAMMER

1.  How to drill holes

(1)

 

Pull

 

the

 

switch

 

trigger

 

after

 

applying

 

the

 

drill

 

bit

 

tip

 

to

 

the

 

drilling

 

position.

(2)

 

It

 

is

 

unnecessary

 

to

 

forcibly

 

press

 

the

 

Drill

 

main

 

body.

 

It

 

is

 

su

ffi

  

cient

 

to

 

slightly

 

press

 

the

 

Drill

 

to

 

an

 

extent

 

that

 

clips

 

are

 

freely

 

discharged.

CAUTION

 

Although

 

a

 

safety

 

clutch

 

is

 

built

 

in

 

this

 

Drill,

 

the

 

drill

 

bit

 

is

 

suddenly

 

halted

 

when

 

it

 

strikes

 

against

 

a

 

buried

 

reinforcing

 

bar,

 

and

 

the

 

Drill

 

starts

 

reverse

 

operation

 

as

 

a

 

reaction.

 

Always

 

continue

 

a

 

hole-drilling

 

job,

 

while

 

strongly

 

gripping

 

both

 

the

 

side

 

handle

 

and

 

the

 

handle.

2.  How to clip or crush

 

By

 

applying

 

the

 

drill

 

bit

 

tip

 

to

 

the

 

chipping

 

or

 

crushing

 

position,

 

operate

 

the

 

Drill

 

by

 

utilizing

 

its

 

own

 

weight.

 

Forcible

 

pressing

 

or

 

thrusting

 

is

 

unnecessary.

DRILLING AND DRIVING

-

IN OPERATIONS

FOR SELF

-

DRILLING ANCHORS

When

 

self-drilling

 

anchors

 

(

Fig. 4

)

 

are

 

used,

 

the

 

anchors

 

can

 

be

 

driven

 

in.

 

In

 

this

 

case,

 

use

 

the

 

optional

 

accessories

 

for

 

self-drilling

 

anchor…

   

such

 

as

 

the

 

anchor

 

adapter.

1.  When an impact anchor adapter is used

(1)

 

Attach

 

the

 

turning

 

handle

 

to

 

the

 

anchor

 

adapter

 

and

 

create

 

a

 

base

 

hole

 

by

 

applying

 

Drill

 

impact

 

to

 

the

 

hole

 

position

 

while

 

manually

 

turning

 

the

 

handle.

 

(

Fig. 5

)

 

In

 

this

 

case,

 

the

 

plug

 

is

 

not

 

attached

 

to

 

the

 

anchor.

(2)

 

When

 

a

 

predetermined

 

depth

 

has

 

been

 

attained,

 

pull

 

out

 

the

 

anchor

 

tentatively.

 

(

Fig. 6

)

(3)

 

By

 

employing

 

a

 

syringe,

 

blow

 

out

 

the

 

chips.

000Book̲PR-25B.indb   7

000Book̲PR-25B.indb   7

2009/04/20   9:59:57

2009/04/20   9:59:57