Hitachi DS12DM [15/82] English
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Hitachi DS12DM [15/82] English

Hitachi DS12DM [15/82] English
English
14
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 and excessively worn
carbon brush can result in motor trouble, replace
the carbon brush with new ones when it becomes
worn to or near the “wear limit”. In addition, always
keep carbon brushes clean and ensure that they
slide freely whthin the brush holders.
NOTE
When replacing the carbon brush with a new one,
be sure to use the Hitachi Carbon Brush Code No.
999054.
5. Replacing carbon brushes
Take out the carbon brush by first removing the
brush cap and then hooking the protrusion of the
carbon brush with a flat head screw driver, etc., as
shown in Fig. 19.
When installing the carbon brush, choose the
direction so that the nail of the carbon brush agrees
with the contact portion outside the brush tube.
Then push it in with a finger as illustrated in
Fig. 20. Lastly, install the brush cap.
CAUTION
Be absolutely sure to insert the nail of the carbon
brush into the contact portion outside the brush
tube (You can insert whichever one of the two nails
provided).
Caution must be exercised since any error in this
operation can result in the deformed nail of the
carbon brush and may cause motor trouble at an
early stage.
6. Cleaning on the outside
When the driver drill is stained, wipe with a soft
dry cloth or a cloth moistened with soapy water.
Do not use chloric solvents, gasoline or paint thinner,
for they melt plastics.
7. Storage
Store the driver drill in a place in which the tempera
ture is less than 40°C and out of reach of children.
8. Service parts list
A : Item No.
B : Code No.
C : No. Used
D : Remarks
CAUTION
Repair, modification and inspection of Hitachi Power
Tools must be carried out by a 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 (i.e. code numbers and/or
design) may be changed without prior notice.
NOTE:
Due to HITACHI’s continuing program of research and
development, the specifications herein are subject to
change without prior notice.
Information concerning airborne noise and vibration
The measured values were determined according to
EN60745 and declared in accordance with ISO 4871.
Measured A-weighted sound power level: 82 dB (A)
Measured A-weighted sound pressure level: 71 dB (A)
Uncertainty KpA: 1.5 dB (A).
Wear hearing protection.
Vibration total values (triax vector sum) determined
according to EN60745.
As drill:
Vibration emission value
ah, D = 1.1 m/s
2
Uncertainty K = 1.5 m/s
2
As driver:
Vibration emission value
ah = 0.62 m/s
2
Uncertainty K = 1.5 m/s
2
WARNING
䡬 The vibration emission value during actual use of the
power tool can differ from the declared value
depending on the ways in which the tool is used.
䡬 To identify the safety measures to protect the operator
that are based on an estimation of exposure in the
actual conditions of use (taking account of all parts of
the operating cycle such as the times when the tool is
switched off and when it is running idle in addition to
the trigger time).
01Eng_DS9DM_EE 08/4/28, 17:2414

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English 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 and excessively worn carbon brush can result in motor trouble replace the carbon brush with new ones when it becomes worn to or near the wear limit In addition always keep carbon brushes clean and ensure that they slide freely whthin the brush holders NOTE When replacing the carbon brush with a new one be sure to use the Hitachi Carbon Brush Code No 999054 5 Replacing carbon brushes Take out the carbon brush by first removing the brush cap and then hooking the protrusion of the carbon brush with a flat head screw driver etc as shown in Fig 19 When installing the carbon brush choose the direction so that the nail of the carbon brush agrees with the contact portion outside the brush tube Then push it in with a finger as illustrated in Fig 20 Lastly install the brush cap CAUTION Be absolutely sure to insert the nail of the carbon brush into the contact portion outside the brush tube You can insert whichever one of the two nails provided Caution must be exercised since any error in this operation can result in the deformed nail of the carbon brush and may cause motor trouble at an early stage 6 Cleaning on the outside When the driver drill is stained wipe with a soft dry cloth or a cloth moistened with soapy water Do not use chloric solvents gasoline or paint thinner for they melt plastics 7 Storage Store the driver drill in a place in which the tempera ture is less than 40 C and out of reach of children 8 Service parts list A Item No B Code No C No Used D Remarks CAUTION Repair modification and inspection of Hitachi Power Tools must be carried out by a 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 i e code numbers and or design may be changed without prior notice NOTE Due to HITACHI S continuing program development the specifications herein change without prior notice of research and are subject to Information concerning airborne noise and vibration The measured values were determined according to EN60745 and declared in accordance with ISO 4871 Measured A weighted sound power level 82 dB A Measured A weighted sound pressure level 71 dB A Uncertainty KpA 1 5 dB A Wear hearing protection Vibration total values according to EN60745 triax vector sum determined As drill Vibration emission value 3h D 1 1 m s2 U ncertainty K 1 5 m s2 As driver Vibration emission value ah 0 62 m s2 Uncertainty K 1 5 m s2 WARNING O The vibration emission value during actual use of the power tool can differ from the declared value depending on the ways in which the tool is used O To identify the safety measures to protecttheoperator that are based on an estimation of exposure in the actual conditions of use taking account of all parts of the operati ng cycle such as the times when the tool is switched off and when it is running idle in addition to the trigger time 14

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