Atlas Copco ALF Serie Consignes De Sécurité Et D'utilisation page 11

ALF 71, ALF 71-1, ALF 67/80, BMT 51
4. Calibrate the correct air and water
pressure
Use the Atlas Copco No. 9090 0550 80 pressure
gauge to check the water and air pressure when
the rock drill is running.
Air pressure
Ensure that the compressor can deliver the
required air volume at 4–6 bar at the tool.
► high pressure causes rough operation and
damage.
► Low pressure results in a slow drilling speed.
Water pressure
The pressure gauge is equipped with a needle
which is pressed into the hose to measure the
pressure inside.
Note! Make sure that the water pressure is at
least 1 bar lower than the air pressure
otherwise the water can enter the impact
mechanism. For example if the air pressure
is 6 bar, the water pressure must be below
5 bar to prevent water entering the impact
mechanism.
© 2006 Atlas Copco Construction Tools AB
www.CrowderSupply.com • Toll Free: 888-883-5144
| |
No. 9800 0681 71 2006-11-20
Safety and operating instructions
Attaching the pusher leg to
the rock drill
The pusher leg must be fixed to the rock drill by means
of the bayonet coupling.
Controls
Throttle lever
The rock drill is equipped with a throttle lever
for regulating both the compressed air to the
percussion mechanism and the flushing water.
A Throttle valve closed (stop position)
Blow-cleaning only
B Air to pusher leg
C Flushing water
D Air to percussion mechanism
E Throttle lever fully open (full throttle)
F Extra blowing
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