Version 1.0.4 - 2020-12-15
64
Translation of original operating manual
MH25SV
EN
MH
25
SV
_GB_
7.
fm
7
Malfunctions
7.1
Malfunctions on the milling machine
Malfunction
Cause/
possible effects
Solution
The milling machine does not
start
•
Power-on sequence not observed.
•
•
Power failure, Restoring readi-
•
Tool “is burning".
•
Incorrect speed.
•
Chips are not coming out of the
bore hole.
•
Tool blunt.
•
Operating without cooling agent.
•
Select another speed, feed too
high.
•
Pull out tool more often.
•
Sharpen or replace tool.
•
Use cooling agent.
Spindle taper cannot be
inserted into the quill.
•
Remove any dirt, grease or oil
from the internal conical surface of
the quill or the grip cone.
•
Clean the surfaces thoroughly.
Keep surfaces free of grease.
It is not possible to push-out
the taper.
•
Taper sleeve has shrunk onto the
cone.
•
Let the machine run at highest
speed for two minutes to warm it
up and attempt to remove the
taper again.
•
Motor does not start
•
Defective fuse.
•
Have it checked by authorised per-
sonnel.
Working spindle rattling on
rough workpiece surfaces
•
Climb milling machining not possi-
ble under the current operating
conditions.
•
Clamping lever of the movement
axes not tightened.
•
Loose collet chuck, loose drill
chuck, loose drawbar.
•
Tool is blunt.
•
The workpiece is not fastened.
•
Excessive slack in bearing.
•
Working spindle moves up and
down.
•
Perform conventional milling.
•
Tighten clamping lever.
•
Check, re-tighten.
•
Sharpen or replace tool.
•
Clamp the workpiece firmly.
•
Readjust bearing slack or replace
bearing
•
Readjust bearing slack or replace
bearing
Automatic feed is not
functioning.
•
End position of the axis has been
reached.
•
Limit position switch soiled.
•
•
Clean contactless position swit-
ches.
