1. Please read the instructions carefully before operating this machine. Check whether the ground cable is firmly grounded and the components work properly. Whether the operating position is bright (do not operate the machine without training personnel).

2. Operation to do three tight, three no, one attention. Three tight: tight clothes, tight waist, tight sleeves; Three no: do not wear a tie, do not wear hand ornaments, do not wear gloves; First caution: Pay attention to eye protection.

3. Please pay attention to all warning signs before starting the machine.

4. Make clear the rotation direction of the bit and select the bit correctly.

5. Do not approach or touch moving or rotating parts.

6. If the horizontal drilling and vertical drilling interference, must choose asynchronous work.

7. Do not adjust or maintain the machine before the main power supply is turned off.