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Verfügbare Sprachen
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Safety and operating instructions
Checking for wear
1. Check the wear in the chuck bushing using the
Atlas Copco (3121 5000 42) gauge (19 mm).
If the wear limit has been exceeded, the drill steel
shank will wear more quickly, or become
deformed. This will lead to stoppages and
increased drill-steel consumption.
2. Check the hoses, couplings and controls for
leakage and damage.
3. Check that the rock drill is receiving enough
lubrication. Fill the lubricator if necessary.
4. Drain the water separator.
Periodic maintenance
After each operating period of approximately 100
working hours or three times a year the machine
must be dismantled and all parts be cleaned and
checked. This work must be performed by authorized
staff, trained for this task.
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Tightening torque
BBD 12DCS
Side bolt nut, 70 Nm (52 ft.lbf)
A.
Damage patterns
Worn or broken parts must always be studied
carefully before they are replaced. They can give
important information about the condition of the drill
and about the way it is used and maintained.
Problem
Steel parts are a bluish colour
Steel parts have small almost
microscopic fissures on the
wear surfaces
Irregular cavities on the surface
of bronze parts
Cutting marks
Storage
Always oil the rock drill well, before you put it into
●
storage.
●
Always store the machine in a clean and dry place.
Make sure that no foreign matter enters the
●
machine.
Protect the chuck using the plastic plug provided
●
with the machine. Alternatively, use a wooden plug
or a clean piece of cotton waste.
BBD 12D, 12DS, 12DCS
BBD 12D, BBD 12DS
Cause
The parts have been subjected
to excessive heat. This can be
caused by insufficient
lubrication or idling
See above
See above
Secondary damage
Dirt inside the drill
Interior misalignment due to
uneven tension of the side
bolts
Original instructions
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