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RH 656W
Start and stop
Starting the rock drill
1. Open the main valve for compressed air.
2. Open the cock (D) for the flushing water.
3. Adjust the feed control knob (C) until the feed
force is suitable for collaring the hole.
4. Align the rock drill so the drill steel touches the
required collaring point.
5. Move the throttle lever (A) slightly forward, which
starts the water flushing, the 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 feed
control knob (C) so that the maximum penetration
rate is obtained.
© 2010 Atlas Copco Construction Tools AB | No. 9800 0657 71 | 2010-03-16
Original instructions
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Safety and operating instructions
Stopping the rock drill
1. Pull the throttle lever (A) backwards, which will
stop the percussion, rotation and flushing water.
2. Turn the feed control knob (C) to the closed
position.
Operating
Drilling
♦
Use protective shoes, gloves, helmet, ear
protectors and impact resistant eye protection with
side protection.
♦
Stand firmly and always hold the machine with
both hands.
♦
Hold the inserted tool firmly against the work
surface before starting the machine.
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