Maintenance And Inspection - Hitachi DV 20VB2 Manual De Instrucciones

English
Pulling the trigger and pushing the stopper, it keeps the switched-on condition which is
convenient for continuous running. When switching off, the stopper can be disconnected
by pulling the trigger again.
NOTE:
If the L-side of push button is pressed for reverse bit rotation, the stopper cannot be used.
2. Drilling
When drilling, start the drill slowly, and gradually increasing speed as you drill.
Always apply pressure in a straight line with the bit. Use enough pressure to keep
drilling, but do not push hard enough to stall the motor or deflect the bit.
To minimize stalling or breaking through the material, reduce pressure on drill and
ease the bit through the last part of the hole.
If the drill stalls, release the trigger immediately, remove the bit from the work and
start again. Do not click the trigger on and off in an attempt to start a stalled drill. This
can damage the drill.
WARNING:

MAINTENANCE AND INSPECTION

WARNING:
1. Inspecting the drill bits
Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace
the drill bit with a new one or resharpening without delay when abrasion is noted.
2. Inspecting the screws
Regularly inspect all screws and ensure that they are fully tightened. Should any of the
screws be loosened, retighten them immediately.
WARNING:
3. Keeping after use
When not in use, the Power tool should be kept in a dry place out of the reach of
children.
4. Inspecting the carbon brushes
For your continued safety and electrical shock protection, carbon brush inspection and
replacement on this tool should ONLY be performed by a Hitachi Authorized Service Center.
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The larger the drill bit diameter, the larger the reactive force on your arm.
Be careful not to lose control of the drill because of this reactive force.
To maintain firm control, establish a good foothold, use side handle, hold
the drill tightly with both hand, and ensure that the drill is vertical to the
material being drilled.
Be sure to switch power OFF and disconnect the plug from the
receptacle during maintenance and inspection.
Using this hammer drill with loosened screws is extremely dangerous.