Feed Control Lever; Valve Pin; Start And Stop; Starting The Rock Drill - Atlas Copco BBC 16W Prescriptions De Sécurité Et Instructions Pour L'opérateur

BBC 16W, 16WS, 34W, 34WS, 34WTH

Feed control lever

A
B
BBC 16W/WS, BBC 34W/WS
A
BBC 34WTH
Adjust the feed force using the feed control lever as
follows:
♦ Turn the feed control lever towards (B) to increase
the feed force.
♦ Turn the feed control lever towards (A) to decrease
the feed force.
♦ When the feed control lever is in the closed
position (A), the pusher leg is vented.
© 2012 Atlas Copco Construction Tools AB | No. 9800 0627 71f | 2012-06-30
Original instructions
B
Safety and operating instructions

Valve pin

When the valve pin is pushed in, the feed force stops
abruptly and the setting on the feed control lever is
overridden. The piston rod in the pusher leg rectracts
automatically. This function is used, for example to
adjust the height of the rock drill, when rigging up
the pusher leg, or when there is a tendency to jam.
When the valve pin is depressed, the feed control
lever is activated again.

Start and stop

Starting the rock drill

C
B
1. Open the main valve for compressed air.
2. Open the cock (D) for the flushing water.
3. Adjust the feed control lever (C) 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, which
will start the water flushing, the percussion and
rotation.
6. Collar the hole with reduced feed force.
A
D
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