OPTIMUM
MASCHINEN - GERMANY
Maintenance
Version 2.0.2 2014-11-04 Page 45Original operating instructions
B17Pro | B23Pro | B26Pro | B33Pro GB
every six
months
V-belts at the drill head
Visual inspec-
tion
Check whether the V-belts have become porous and worn.
Img.6-1: V-belt housing
every six
months
Electrical system
Testing
Check the electrical equipment / parts of the drilling machine.
"Qualification of the staff“ on page 11
as required
Drill depth stop
Spindle return
spring
Loosen both nuts on the spring housing, approximately 1/4
counter-clockwise rotation. Under no circumstances must
the nuts be completely removed from the screw thread!
Hold the spring housing with one hand, while using the
other hand to slowly remove the housing.
Rotate the spring housing about its own axis until the pin
snaps into the next notch.
Img.6-2: Spindle return spring
INFORMATION
If the tension has increased, rotate the housing
clockwise and if the tension has decreased rotate
the housing counter-clockwise.
Ensure that the notch is always snapped into the
spring housing properly and subsequently tighten
the nut.
The second nut secures the first nut (capped nut).
When the nuts have been tightened they should not
touch the return spring housing.
Interval Where? What? How?
Spring housing
Capped nut
Nut
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