Drilling; Starting The Rock Drill; Stopping The Rock Drill; Re-Positioning The Pusher Leg - Atlas Copco ALF 71 Instrucciones De Seguridad Y Funcionamiento

ALF 71, ALF 71-1, ALF 67/80, BMT 51

Drilling

Starting the rock drill

B
C
1. Open the main valve for compressed air.
2. Open the cock (D) for the flushing water.
3. Adjust the feed control lever (B) to give a
suitable feed force for collaring the hole.
4. Align the rock drill so that the drill steel
touches the required collaring point.
5. Move the throttle lever (A) forward a little,
this will start water flushing, percussion and
rotation.
6. Collar the hole with reduced feed force.
7. Move the throttle lever (A) fully forward once
the drill steel has gained a secure footing in
the rock.
8. Adjust the feed force by means of the control
lever (A) so that the maximum penetration
rate is obtained.

Stopping the rock drill

Pull the throttle lever (A) backwards, this will stop
percussion, rotation and flushing water.

Re-positioning the pusher leg

1. Switch off the rock drill percussion and flushing
with the throttle lever (A).
2. Depress the valve pin (C), whereupon the piston
rod is pulled back into the pusher leg cylinder
automatically.
3. Re-position the pusher leg.
4. Release the valve pin (C), whereupon the piston
rod will move outwards again.
5. Move the throttle lever (A) forward into the
working position.
Note! The feed control lever (B) does not need to
be touched during this procedure.
© 2010 Atlas Copco Construction Tools AB
Original instructions
A
D
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No. 9800 0681 71b
Safety and operating instructions

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 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.
Protect the chuck using the plastic plug provided
with the machine. Alternatively, use a wooden
plug or a clean piece of cotton waste.
Always hose down and wipe clean the rock drill
and pusher leg after use.
In the case of long-term storage, pour a quantity
of oil directly into the rock drill's air intake and
then turn on the air briefly. This will protect the
machine from corrosion.
Differences between original parts and
pattern parts
When buying a part, the first thing to do is to verify
that the part is an Atlas Copco part. Most parts can
be identified.
Rock drill parts are normally marked with a part number
and the Atlas Copco identity mark which is a circle with
a rock drill inside it. In a few cases the part is marked
either with the circle only or the part number only.
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2012-07-05 13