Manual operacional DCR-20

Page 125

Rod Changer Operation: Lever Pull Drilling Specification

3. Secure rod on connection lower side by moving lower clamp switch to the left. After lower clamp stops, return switch to neutral position.

Lower Clamp

4. Move rotary head forward slowly until there is some stroke between shank rod and cushion sub by moving drill control lever forward to the 1st position.

5. Press right side of rotation switch and shank rod will rotate reverse and connection of rod and joint piece be loosened. 6. When connection rod and joint piece is fully loosened, there is no stroke between shank rod and cushion sub. Release rotation switch. 7. If connection rod and joint piece is not loosened, perform the following procedures to loosen it.

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