HUMMEL
®
01.01.2019
English / Englisch
CAUSES OF FAULTS
9.3 THE MACHINE RUNS BUT HAS NO OR VERY
LITTLE SANDING POWER CAPACITY
•
The sanding medium is incorrect or dull and must be replaced.
Section 5.3, Changing the sanding belt
•
At low temperatures: The machine is too cold and must be
heated up to room temperature in a warm room.
•
Cables which are too long or too thin are used for the
electrical connection:
- The power cables have a total length of more than 20 m
(790”).
- The power cables have wire cross-sections which are too
small:
at mains voltage 220 V or 230 V are the wire cross-sections
smaller than 2.5 mm² (0.0039 sq.in.),
at mains voltage 400 V are the wire cross-sections smaller
than 1.5 mm² (0.0023 sq.in.).
This causes of faults lead to a loss of power and are not
allowed for safety reasons!
•
The electrical network is not providing sufficient voltage
(undervoltage). Use a transformer if necessary (e.g. LÄGLER
®
part number 708.00.00.100 for 230 V).
•
The V-belts are not tight enough and must be tightened a bit.
Section 7.10, Replacement and tensioning of V-belts
•
The sanding pressure do not suit to the grit grade of the
sanding belt and must be corrected.
Section 5.2, Regulating the sanding drum pressure
9
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