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1. Open the main valve for compressed air.
2. Open the cock (4) for the flushing water.
3. Adjust the feed control knob (2) to give a suitab-
le feed force for collaring the hole.
4. Align the rock drill so that the drill steel touches
the desired collaring point.
5. Move the throttle lever (1) forward a little, which
will start the water flushing, the percussion and
rotation.
6. Collar the hole with reduced feed force.
7. Move the throttle lever (1) fully forward once
the drill steel has gained a secure footing in the
rock.
8. Adjust the feed force by means of the control
knob (2) so that the maximum penetration rate
is obtained.
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1. Pull the throttle lever (1) backwards, which will
stop the percussion, rotation and flushing water.
2. Turn the feed control knob (2) to the closed po-
sition (A).
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1. Switch off the rock-drill percussion and flushing
by means of throttle lever (1).
2. Depress the valve pin (3), whereupon the pis-
ton rod is pulled back into the pusher-leg cylin-
der automatically.
3. Re-position the pusher leg.
4. Release the valve pin (3), whereupon the pis-
ton rod moves outward again.
5. Move the throttle lever (1) forward into the wor-
king position.
Note that the feed control knob (2) does not need
to be touched throughout this operation.
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Lay down the rock drill on a stone, wooden plank
or similar object, so as to prevent drill cuttings and
other foreign matter from entering the chuck.
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Daily maintenance, regular checking of wear parts
and the carrying out of repairs in good time pre-
vents breakdowns and increases the service life of
the machine.
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1. Check the wear in the chuck bushing (fig. 5)
using the gauge 3091 0038 00 (22 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 incre-
ased drill-steel consumption.
2. Check the tightness of the side-bolt nuts.
Tighten to a torque of 130 Nm.
3. Check the rock drill's connection to the pusher
leg.
4. Check the hoses, couplings and controls for lea-
kage and damage.
5. Check that the rock drill and pusher leg are re-
ceiving enough lubrication. Fill the lubricator as
necessary.
6. Drain the water separator.
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Carry out a basic check of all functions of the dril-
ling equipment.
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1. Send the rock drill to a workshop for inspection.
The local operating conditions will determine
whether or not this is a suitable interval for over-
hauling.
2. Dismantle and clean the lubricator.
3. Clean out the water separator.
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In low ambient temperatures, ice can form in the
machine. This can be avoided if the water in the
compressed air is removed. This can be done by
equipping the air lines with water separators and
drainage points for water condensate.
If the rock drill ices up, it must not be heated to
melt the ice. Let the ice thaw at room temperature.
1% Do not pour methylated spirits or similar sub-
stances into the rock drill, since the spirits will inter-
fere with the lubrication and lead to increased wear.
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