Operator’s instructions
6. Before drilling
69
Preparations for drilling
1. Set the switch for Compressor charging/Positioning to COMPRESSOR ON/POSI-
TIONING FRONT CONTROL PANEL position.
2. Set all controls for feed and drilling in NEUTRAL position.
3. Set the switch for Percussion pressure to REDUCED PERCUSSION PRESSURE/
DRILL FEED PRESSURE position.
4. Set the switch for Dust collector and flushing air to ZERO position.
5. Set the sleeve retainer control in OPEN position.
6. Set the drill steel support control in OPEN position.
7. Insert a drill rod with drill bit and screw it into the rock drill.
8. Set the drill steel support control in CLOSED position.
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