Operation and Control
Fitting or replacing the diamond dry core bit
(Figure 4)
The diamond dry core bit is chosen for the required drilling diameter and is screwed onto
the G½″ internal thread or 1¼″ UNC external thread of the output shaft.
Please note!
If the dry drilling motor is used in a drill stand, the machine must be fixed in the motor
collar before the diamond dry core bit is fitted.
Danger!
Risk of fatal injuries due to electric shock.
► Disconnect the mains plug before carrying out any work on the dry drilling motor.
Danger!
Risk of injury due to hot core bits.
► The diamond dry core bit can get hot if used for a lengthy time. Wear safety gloves
when changing the hot core bit or allow the core bit to cool first.
Figure 4
•
Screw the diamond dry core bit (2) onto the 1¼″ UNC external thread or the diamond
dry core bit (3) into the G½″ internal thread of the drive shaft (1), up to the limit stop.
• Use an open-ended spanner SW 36 to hold the drive shaft tight (1).
• Tighten the diamond dry core bit (2) using an open-ended spanner SW 41.
• Tighten the diamond dry core bit (3) using an open-ended spanner SW 22 or SW 24.
Please note!
Check the fit and condition of the diamond dry core bit. A damaged diamond dry core
bit may not be used and must be replaced immediately.
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