Hitachi HTC-DS12DVB2-TC [12/29] 2 inherent drawbacks of cordless driver drills requiring particular attention during sales promotion
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8-2. Inherent Drawbacks of Cordless Driver Drills Requiring Particular Attention During Sales Promotion
The cordless driver drill offers many advantages; it can be used in places where no power source is available, the
absence of a cord allows easy use, etc. However, any cordless tool has certain inherent drawbacks.
Salespersons must be thoroughly familiar with these drawbacks in order to properly advise the customer in the
most efficient use of the tool.
A. Suggestions and precautions for the efficient use of the tool
(1) Use the Cordless Driver Drill for comparatively light work.
Because it is battery driven, the output of the motor in the cordless driver drill is rather low in comparison with
conventional electric power tools. Accordingly, it is not suitable for continuous drilling of many holes in
succession, or for drilling into particularly hard materials which creates a heavy load. Salespersons should
recommend conventional electric power tools for such heavy work.
(2) Drilling of large diameter holes should be conducted at low speed.
Instruct the customer that drilling of large diameter holes or other work which requires particularly strong
torque should be done at low speed. Because there is less torque at high speed, attempting such work at high
speed will not improve working efficiency.
(3) Do not insert a foreign object into body vent holes.
The body of this tool has vent holes for improving the cooling efficiency. As a fan is built into the motor, a
foreign object inserted through a vent hole may cause a failure. Please instruct customers to never insert a
foreign object into the vent hole.
(4) Avoid "Locking" of the motor.
Locking of the motor will cause an overload current that could result in burning of the motor and/or rapid
deterioration of the battery. Salespersons should advise the customer to immediately release the switch and
stop operation if the motor becomes locked. (A jammed drill bit can be disengaged from the workpiece
material by setting the switch to reverse rotation, or by manually turning the main body of the tool.)
(5) Variation in amount of work possible per charge
Although the nominal chargeable capacity of the storage batteries used with the Model DS 12DVB2 is 2.0 Ah,
or 2.2 Ah, the actual capacity may vary within 10% of that value depending on the ambient temperature during
use and charging, and the number of times the batteries have been recharged. It should be noted that other
factors which may have a bearing on the amount of work possible per charge are the working conditions
(ambient temperature, type and moisture content of the workpiece, sharpness of the drill bit, etc.) and the
operational skill of the user.
Содержание
- Hitach 1
- Model ds12dvb2 1
- Power tools 1
- Remark 2
- Contents 3
- Applications 4
- Marketing objective 4
- Product name 4
- Selling points 4
- 1 1 22 position adjustable torque setting 5
- 1 2 durable fan cooled powerful motor 5
- 1 3 13 mm 1 2 single sleeve keyless chuck with ratcheting lock mechanism 5
- 1 4 variable speed switch with braking function 5
- 1 selling point descriptions 5
- Effect ensuring improved durability in continuous operation 5
- Fig 1 clutch torque 5
- Holding the main unit with one hand while turning the sleeve with the other hand this model is also equipped 5
- In the variable speed range 5
- Is a convenient feature during actual working also the feedback system ensures a sufficiently large torque even 5
- Loosen 5
- Sleeve 5
- The braking function allows the driver unit to stop rotation immediately when the trigger switch is released which 5
- The cooling fan incorporated in the motor and the air vents provided in its outer frame greatly enhance the cooling 5
- The keyless chuck facilitates fast and easy replacement of driver bits replacement can be carried out simply by 5
- The torque can be set finely thanks to the adoption of the 22 clutch positions to improve the operability 5
- Tighten 5
- With ratcheting lock mechanism to prevent the chuck from loosening 5
- Specifications 7
- Comparisons with similar products 8
- Drilling and fastening performance comparison per charge 9
- Remark number of machine screws fastened per charge remark 1 number of holes or fasteners per charge the above table shows an example of test data the batteries used in this test data are as follows model ds 12dvb2 and c 2 ah the figures in parentheses indicate the values for a 2 ah battery as actually measured values listed in the above table may vary depending on sharpness of the drill bit workpiece hardness particularly in wood materials moisture content of wood charging condition operator skill etc this data should be used as a comparative guide only 9
- Working performance per single charge 9
- 1 safety instructions 10
- Precautions in sales promotion 10
- Caution 11
- 2 inherent drawbacks of cordless driver drills requiring particular attention during sales promotion 12
- 1 speed control mechanism 14
- 2 0 6 0 14
- Amount trigger switch is depressed mm 14
- Reference materials 14
- Rotation speed 14
- 1 precautions in disassembly and reassembly 15
- Repair guide 15
- 2 precautions in disassembly and reassembly of battery charger 23
- Ds12dvb2 24
- Model 10 20 30 40 fixed variable 24
- Standard repair time unit schedules 24
- Work flow 24
- Assembly diagram for ds12dvb2 25
- Cordless driver drill model ds 12dvb2 25
- Electric tool parts list 25
- Hitachi power tools 25
- Standard accessories 27
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