BDS Maschinen MAB 800 Operating Instructions Manual page 28

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The lubricating device must not be used in the case of overhead work.
In such a case, please use BDS high performance lubrication spray
ZHS 400.
Prior to drilling, spray the grease into the inside of the drill.
Spraying must be repeated in the case of greater drilling depths.
Threading:
Select the tap adapter ZGA xxx that is appropriate for the tap or, in
case of the quick-change drill chuck, select the correct quick-change
insert in accordance with the shaft size.
After the core hole has been drilled, change to the lowest gear stage
and insert the tap. After the tap has been put on, it is automatically
pulled into the material. Then you have to move the machine slide with
slight pressure.
If the desired length of thread is finished, change to counter clockwise
rotation, start the motor again and the tap will be retracted.
In order to protect the gear, the motor will only start into the other
direction after the speed decreased to zero.
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