Atlas Copco ALF 72D Consignes De Sécurité Et D'utilisation page 14

Safety and operating instructions
Drilling
Starting the rock drill
A
1. Open the main valve for compressed air.
2. Adjust the feed control knob (C) to give a
suitable feed force for collaring the hole.
. Align the rock drill so that the drill steel
touches the desired collaring point.
4. Move the throttle lever (A) forward a little,
this will start water flushing, percussion and
rotation.
5. Collar the hole with reduced feed force.
6. Move the throttle lever (A) fully forward once
the drill steel has gained a secure footing in
the rock.
7. Adjust the feed force by means of the control
knob (C) so that the maximum penetration
rate is obtained.
Stopping the rock drill
1. Pull the throttle lever (A) backwards, this will
stop percussion, rotation and flushing water.
2. Turn the feed control knob (C) to the closed
position.
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B
C
© 2006 Atlas Copco Construction Tools AB
ALF 72D, ALF 72D-1, ALF 67/80D, BMK 62S
Re-positioning the pusher leg
1. Switch off the rock drill percussion and
flushing with the throttle lever (A).
2. Depress the valve pin (B), whereupon the
piston rod is pulled back into the pusher leg
cylinder automatically (manually for BMK
62S).
. Re-position the pusher leg.
4. Release the valve pin (B), whereupon the
piston rod moves outward again.
5. Move the throttle lever (A) forward into the
working position.
6. Note that the feed control knob (C) does not
need to be touched during this procedure.
When you have finished drilling
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.
Turn off the water pressure before the air pressure.
Run the rock drill for a few seconds to clean out
water and moisture after the water has been shut
off.
Maintenance
Regular maintenance is a prerequisite for machine
safety. Replace damaged and worn components
in good time. For a major service to the machine,
contact your nearest authorized workshop.
Check the machine and tools for wear and damage
at regular intervals. Do not use very worn or
damaged tools.
When cleaning mechanical parts with a solvent,
make sure that you comply with current health
and safety regulations and ensure that there is
sufficient ventilation.
Daily maintenance, regular checking of wearing
parts and carrying out repairs in good time
prevents breakdowns and increases the service life
of the machine.
Always oil the rock drill and pusher leg well,
before you put them into storage.
Store in a clean and dry place.
Make sure that no foreign matter enters the
machine.
Always hose down and wipe clean the rock drill
and pusher leg after use.
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No. 9800 0680 71 2006-11-20