Pusher Leg Feed Control Knob; Valve Pin; Start And Stop; Starting The Rock Drill - Atlas Copco BBC 34WS-6 Instrucciones De Seguridad Y De Funcionamiento

Safety and operating instructions
(A) Throttle valve closed (stop position).
♦
Blow-cleaning only.
(B) Air to the feed cylinder.
♦
(C) Opening air to the water valve.
♦
♦ (D) Throttle lever and water valve fully open.

Pusher leg feed control knob

B
Adjust the feed force using the feed control knob as
follows:
Turn the knob anti-clockwise (B) to increase the
♦
feed force.
Turn the knob clockwise (A) to decrease the feed
♦
force.
When the feed control knob is in the closed
♦
position (A), the pusher leg is vented.

Valve pin

When the valve pin (V) is pushed in, the feed force
ceases abruptly, thus overriding the setting on the
feed control knob. The facility 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 piston rod in
the pusher leg is retracted automatically.
18

Start and stop

Starting the rock drill

A
A
1. Open the main valve for compressed air.
2. Make sure that the water hose is pressurized
3. Adjust the feed control knob (C) to give a suitable
4. Align the rock drill so that the drill steel touches
5. Move the throttle lever (A) forward a little, which
6. Collar the hole with reduced feed force.
7. Move the throttle lever (A) fully forward once the
8. Adjust the feed force by means of the control
V
© 2015 Construction Tools PC AB | No. 9800 0829 71c | 2015-10-07
BBC 34WS-6, 34WS-8
B
C
that the machine receives flushing water.
feed force for collaring the hole.
the required collaring point.
will start the water flushing, the percussion and
rotation.
drill steel has gained a secure footing in the rock.
knob (C) so that the maximum penetration rate
is obtained.
Original instructions