Hitachi H 45ME, Handling Instructions Manual

4

English

MOUNTING AND OPERATION

Action

Figure

Page

Inserting SDS-max tools

1

14

Removing SDS-max tools

2

14

Deciding working position of tool

3

14

Adujsting the side handle position

4

14

Switch operation

5

14

Locking-on the On / O

ff

  switch

6

15

Releasing the On / O

ff

  switch

7

15

About the power lamp

8

15

Speed change

9

15

How to use the demolition hammer*

10

16

Selecting accessories

―

17

*  Operate this Demolition Hammer by utilizing its empty 

weight. The performance will not be better even if it is 

pressed or thrust forcibly against the work surface.

Hold this Demolition Hammer with a force just su

ffi

  cient 

to counteract the reaction.

CAUTION

  After long time of use, the housing becomes hot. 

Therefore, be careful not to burn your hands.

Warming up (Fig. 11)

  The grease lubrication system in this unit may require 

warming up in cold regions.

  Position the end of the bit so makes contact with the 

concrete, turn on the switch and perform the warming 

up operation. Make sure that a hitting sound is produced 

and then use the unit.

ABOUT THE PROTECTION 

FUNCTION

This tool has a built-in protection circuit for preventing 

damage to the unit in the event of an abnormality. Depending 

on the nature of the abnormality, the display lamp will 

fl

 ash 

as shown in 

Table 1

 and the unit will cease to operate. In 

such cases, verify the problem indicated by the 

fl

 ashing and 

take whatever steps are necessary to correct the problem.

NOTE

Repair may be required if the display lamp continues to 

fl

 ash after taking all necessary steps to correct the problem. 

If the problem persists, please arrange for repairs.

Table 1

Display 

lamp 

fl

 ashing

Cause

Solution

Flash

Internal temperature 

has risen beyond 

the unit’s speci

fi

 ed 

temperature.

(Temperature 

increase protection 

function)

Turn o

ff

  the unit 

and allow it to cool 

down for about 15 to 

30 minutes.

When the temperature 

goes down, press the 

impact rate selector 

switch to recover.

Flash

Excessive pressure 

applied to the tool 

has resulted in an 

overload.

(Overload 

protection function)

Press the impact rate 

selector switch to 

recover. Try to avoid 

tasks that will apply 

excess pressure to 

the unit.

Flash

Tool is connected 

to a power source 

whose voltage is 

either too high or 

too low.

(Circuit protection 

function)

Connect the unit to a 

power supply matching 

the input voltage 

speci

fi

 ed on the 

nameplate. Press the 

impact rate selector 

switch to recover.

Flash

Sensor signal read 

error.

(Control monitoring 

function)

Press the impact rate 

selector switch to 

recover. Repair may 

be required if this error 

continuously occurs.

GREASE REPLACEMENT

This Demolition Hammer is of full air-tight construction to 

protect against dust and to prevent lubricant leakage.

Therefore, this Demolition Hammer can be used without 

lubrication for long periods. Replace the grease as described 

below.

Grease Replacement Period

After purchase, replace grease after every 6 months of 

usage. Ask for grease replacement at the nearest authorized 

Service Center.

MAINTENANCE AND INSPECTION

CAUTION

  Be sure to switch OFF and disconnect the attachment 

plug from the receptacle to avoid a serious accident.

1. Inspecting accessories

  Since use of a dull accessory, such as a bull point, a 

cutter, etc. will degrade e

ffi

  ciency and cause possible 

motor malfunction, sharpen or replace with a new one as 

soon as 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.  Replacing supply cord

  If the replacement of the supply cord is necessary, this 

has to be done by the manufacturer of this agent in order 

to avoid a safety hazard.

CAUTION

  In the operation and maintenance of power tools, the 

safety regulations and standards prescribed in each 

country must be observed.

NOTE

Due to HITACHI’s continuing program of research and 

development, the speci

fi

 cations herein are subject to 

change without prior notice.

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2016/06/10   9:24:44

2016/06/10   9:24:44