Struers Unitom-2 Manuel D'instructions page 23

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.
Unitom-2
Instruction Manual
Explanation
The force on the cut-off-wheel is too
high.
The cut-off wheel is too soft for the
task.
Unitom-2 vibrates (worn bearings).
Incorrect choice of cut-off wheel.
Cut-off wheel worn.
Diameter of cut-off wheel too small.
The cut-off wheel gets caught in the
workpiece.
The stop position is set too low.
The workpiece is brittle.
The sample is not resistant to water.
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.
See Section Consumables, Cut-off
Wheels.
Call Struers service technician.
See Section Consumables, Cut-off
Wheels.
Replace the cut-off wheel.
Change to a cut-off wheel with
another diameter, e.g. ø350 mm.
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.
See Section Basic Operation,
Stopping the cutting.
Place the workpiece between two
polystyrene plates.
NB! Always cut brittle workpieces
very carefully.
Use a neutral liquid as cooling fluid
or cut without using cooling fluid at
all.
DO NOT USE AN
INFLAMMABLE LIQUID
(You may lift the pump carefully out
of the recirculation cooling unit).
Leave the protection guard open,
when you leave the machine.
Add Struers Additive for cooling fluid
to the cooling water in the correct
concentration. Check with a
refractometer. See Section
Maintenance.
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