struers Labotom-3 Handbuch Seite 26

Error
The cut-off wheel wears down too
quickly.
The cut-off wheel does not cut
through the workpiece.
The workpiece breaks when
clamped.
The sample is corroded.
22
Labotom-3
Instruction Manual
Explanation
The force on the cut-off-wheel is too
high.
Inadequate cooling.
The force on the cut-off-wheel is too
high.
The cut-off wheel is too soft for the
task.
Labotom-3 vibrates (worn bearings). Call Struers service technician.
Incorrect choice of cut-off wheel.
Cut-off wheel worn.
The cut-off wheel gets caught in the
workpiece because of internal
stress in the workpiece.
The workpiece is brittle.
The sample has been left in the
cutting chamber for too long.
Insufficient additive for cooling fluid.
Action
Apply a lower force on the cut-off
wheel.
- Check that there is enough water
in the recirculation cooling unit.
- Check the cooling water hoses.
Apply a lower force on the cut-off
wheel.
See Consumables Section, Cut-off
Wheels.
See Consumables Section, Cut-off
Wheels.
Replace the cut-off wheel.
Support the workpiece and clamp it
on both sides of the cut-off wheel in
such a way to allow the cut to stay
open.
Make a relief cut: Cut about halfway
through the workpiece. Turn the
workpiece 180°and position the cut
approx. 1 - 2 mm off-centre.
Place the workpiece between two
polystyrene plates.
NB! Always cut brittle workpieces
very carefully.
Leave the protection guard open,
when you leave the machine.
Add Struers Additive for cooling fluid
to the cooling water in the correct
concentration. See Maintenance
Section.