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MAKITA 447 M
english
8 Troubleshooting
Fault Cause Remedy
Motor does not start > Fuse of the mains socket has
blown.
Connect mains fuse.
> Overload protection switch
has tripped.
Switch off the vacuum cleaner
and allow it to cool for approx.
5 minutes. If the cleaner can-
not be started again, contact
the service department.
> Self-acting carbon brush is
worn.
Have carbon brushes changed
by Service.
Motor does not run in auto-
matic mode
> Power tool is defective or not
connected properly.
Check that the power tool
works or that the plug is insert-
ed correctly.
> The power rating of the elec-
trical tool is too low.
Note that minimum power rat-
ing is P>40W
The acoustic warning
sounds. (Reduced suction
power)
> Suction power selected with
suction power control is too
low.
Set suction power in accord-
ance with section 4.2.3. „Set-
ting suction power“.
> Hose diameter is not right for
switch position.
Set correct switch position for
hose diameter.
> Clogged suction hose/nozzle. Clean suction hose/nozzle
> Filter bag is full. See section 7.2.2 „Replacing
filter bag“.
> Filter element is clogged. See section 4.5 „Cleaning filter
element“ and 7.2.3 „Replacing
filter element“.
> Defective cleaning mecha-
nism
Contact Service
The vacuum cleaner
switches off during wet
cleaning
> Tank is full. Switch off the cleaner. Empty
the tank.
Voltage fluctuations > Impedance of power supply is
too high.
Connect the cleaner to another
socket closer to the fuse box.
Voltage fluctuations over 7%
should not occur if the imped-
ance at the transfer point is
≤ 0.15 Ω .
15


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