Optimum OPTIdrill DH 35G Operating Manual page 97

Malfunction
Motor does not start.
Motor is overheating and
there is no power
Precision of the work deficient
Drilling spindle sleeve does
not return to its initial position
The drilling spindle cannot be
moved downwards.
Spindle bearing overheating
Rattle the spindle if the
workpiece surface is rough.
Malfunctions
Version 1.0.4 - 2022-02-15
Cause/
possible effects
• Motor is wrongly connected
• Fuse is defective
• Drill chuck guard not closed
• Machine control
• Motor overloaded?
• Too low mains voltage
• Motor is wrongly connected
• Irregularly heavy or tensed
workpiece
• Inexact horizontal position of the
work-piece holder
• Spindle return spring does not work
• Integrated drill has been swiveled
inwards
• Drill depth adjustment no released
• Bearing worn down
• Bearing pretension is too high
• Working at high drilling speed over
a longer period of time.
• Excessive slack in bearing.
• Spindle moves up and down
• Clamping chuck is loose
• Tool is blunt.
• Workpiece is loose
Translation of original instruction
Solution
• Have it checked by qualified
• Close drill chuck guard
• Only for integrated machine control.
Press the red reset button on the
control unit in the control cabinet.
• Reduce feed
Disconnect immediately and have it
checked by authorized personnel
• Have it checked by qualified
• Balance the piece statically and
secure without straining
• Adjust workpiece-holder
• Check spindle return spring, replace
it, if necessary
• Swivel integrated drill drift out
• Release drill depth adjustment
• Replace
• Increase bearing clearance for fixed
bearing (taper roller bearing)
• Reduce drill speed and feed rate
• Reduce bearing clearance or
replace bearing
• Readjust bearing clearance (fixed
bearing)?
• Check, re-tighten
• Sharpen or renew the tool.
• Clamp the workpiece firmly.
DH35G EN
97