6
Troubleshooting
The determination of the causes for existing defects and their elimination always require
increased attention and caution. Draw the power plug before troubleshooting.
Some of the most frequent defects and their causes are listed in the following chart. In case of other defects,
contact your dealer or the MAFELL customer service.
Defect
Machine cannot be switched on
The machine automatically switches off
during idle operation or stops during
drilling
Drill bit jams
7
Optional accessories
Drill station BST 650 S
Drill station BST 460 S
Drill station BST 460
Drill station BST 320
Cause
No mains voltage
Carbon brushes worn
Mains failure
Machine overloaded
Blunt bit
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Elimination
Check power supply
Take the machine to a MAFELL cus-
tomer service shop.
Check backup fuse
Reduce speed of forward momentum
Replace the drill bit or resharpen it
Ref. no. 961 216
Ref. no. 961 215
Ref. no. 961 211
Ref. no. 961 210