Malfunctions - Optimum Optimill MZ 4S Operating Manual

7

Malfunctions

Malfunction
Noise during work.
Tool "burnt".
Tool running off-centre
or "hopping"
Taper cannot be inserted
in quill.
Motor does not start.
Motor is overheating and
there is no power.
Precision of the work
deficient.
Spindle bearing
overheating.
GB
MZ4S
110
Cause/
possible effects
Spindle runs dry.
Tool blunt or incorrectly clamped.
Incorrect speed.
Chips are not coming out of the
drilled hole.
Blunt tool.
Operating without cooling agent.
Tool deformed
Bearings worn down in the spindle
head.
Tool badly clamped.
Defective clamping chuck.
Remove any dirt, grease or oil from
the internal conical surface of the
spindle sleeve or the taper.
Motor is wrongly connected.
Defective fuse.
Motor overloaded.
Insufficient mains voltage.
Motor wrong connected.
Heavy and unbalanced or
deformed work-piece.
Inexact horizontal position of the
work-piece holder.
Bearing worn down.
Bearing pretension is too high.
Working at high speeds for a long
time.
Translation of the original instructions
Solution
Grease spindle
Use new tool and check clamping.
Choose a different speed, excessive
feed.
Retract tool more often during work.
Sharpen or replace tool.
Use coolant.
Replace the tool.
Have the bearings in the spindle head
replaced.
Clamp the tool properly.
Replace the clamping chuck.
Clean surfaces well.
Keep surfaces free from grease.
Have it checked by qualified
personnel.
Reduce feed, disconnect if necessary
and have it checked by authorised
personnel.
Have it checked by authorised
personnel.
Balance the piece statically and
secure without straining.
Adjust workpiece-holder.
Replace.
Reduce bearing clearance in the fixed
bearing.
Reduce feed rate.
Version 1.0.4 - 2020-07-31
Malfunctions