Version 2.5.1 - 2020-07-2864 Translation of original instructions
MH20V | MH20VL | MH20VLD
GB
MH20V_GB_7.fm
7 Malfunctions
7.1 Milling machine malfunctions
Malfunction
Cause/
possible effects
Solution
Tool "burnt". • Incorrect speed.
• Chips are not coming out of the
drilled hole.
• Blunt tool.
• Operating without cooling agent.
• Choose a different speed, excessive
feed.
• Withdraw the tool more frequently.
• Sharpen or replace tool.
• Use coolant.
Taper cannot be inserted in
quill.
• Remove any dirt, grease or oil
from the internal conical surface of
the spindle sleeve or the taper.
• Clean surfaces well.
Keep surfaces free from grease.
"Spindle seat“ on page 18
Motor does not start. • Defective fuse.
• Circuit breaker
• Have it checked by qualified personnel.
Rattle the spindle if the work-
piece surface is rough.
• Upcut mill machining not possible
under the current operating condi-
tions.
• Clamping lever of the movement
axes not tightened.
• Tool is blunt.
• The workpiece is not fastened.
• Excessive slack in bearing.
• Spindle moves up and down.
• Perform conventional milling.
• Tighten the clamping lever.
• Sharpen or renew the tool.
• Clamp the workpiece firmly.
• Readjust the bearing slack or replace
the bearing.
• Readjust the bearing slack or replace
the bearing.
The quill lever cannot be
moved.
• Fine feed of the quill is activated. • Deactivate fine feed.
"Manual spindle sleeve feed with
the fine feed“ on page 34
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