(5)
Thoroughly clean the brush assembly and
housing using a soft brush and a suitable
vacuum cleaner.
(6)
Inspect the four brushes for damage or
wear and if any one brush is found to be
damaged or worn to a l e n g t h
o f
12mm ( / ”) or less in length then replace
all four brushes. Always replace all four
brushes together.
(7)
When replacing brushes ensure that each
brush moves freely in each brush holder
and fit the brush with the shunt (pigtail) in
such a position as to allow free movement
throughout the brushes life. Ensure that
each brush shunt is connected securely
with the screw and lock washer (two spare
screws and washers are provided with
each pack of brushes). The brush should
be fitted so that the brush shunt (pigtail) is
at the bottom of the brush.
(8)
Refit the brush springs by inserting into the
holder with the coil spring over the brush
then push in until the tag comes into
contact with the holder, slide the tag away
from the brush and release. The brush
spring will clip into position. Check the
springs and brushes for correct alignment
and free movement.
(9)
Finally check that all leads and cables are
clear of moving parts and will not be
trapped when refitting the cover motor.
(10) Refit the cover motor and secure with the
four screws.
1.
Remove the handle and turn the floor sander
upside down so that it rests on the motor cover.
Take care, the floor sander is heavy and can
easily over balance. Make sure that it is well
supported.
2.
Fit the sanding block to the floor sander, making
sure that it is firmly seated.
3.
Place a block of wood or other solid material on
the face of the sanding block 16mm ( / “) high
by 114mm (4½”) wide across the full width of the
sanding block.
15
32
Setting the Wheels
CAUTION - under normal operating
conditions the wheels should not have to
be adjusted.
However, should you
suspect the wheels have gone out of
adjustment follow the procedure below
to check and reset the wheels.
5
8
4.
Place a straight edge, a steel rule is best, across
the center of one wheel and the block of wood. If
the wheels are adjusted correctly there will be no
gap across the whole width of the block. If you
see a gap the wheels need adjustment.
If the gap is at the rear of the block toward the
back of the floor sander, the wheels are too low.
If the gap is at the front of the block, toward the
front of the floor sander the wheels are too high.
5.
If the wheels need adjustment. Loosen the Axle
Clamp screws located under the axle which will
be facing you when the floor sander is upside
down resting on the motor cover.
6.
Rotate the axle via the socket head screw located
in the center of the wheels. As you rotate the axle
via the socket head screw the wheels will rise or
fall . Adjust the wheels so that the straight edge
rests on the center of the wheels and the wood
block so that there is no gap across the whole
width of the block.
7.
When the wheels are correctly adjusted tighten
the axle clamp screws. Check the socket head
screws in the center of the wheels are tight.
1.
Examine the power cable for damage. If the
outer insulation shows the slightest of abrasions
or the inner conductors are exposed then the
cable must be replaced. The cable must not be
repaired with tape or insulation sleeve.
2.
Open and check the mains plug for condition,
loose connections, damaged wires etc. Ensure
that the strain relief of the plug is correctly
secured to the outer cable insulation. This does
not apply if the plug is molded on to the power
cable.
3.
Remove the question switch housing screws and
lift separate the switch housing. Check the
switch, connections, leads etc.
Pay special
attention to any gaskets, ‘O’ rings and seals
intended to exclude dust from the switch and
switch housing area. These must be maintained
in good condition.
Carefully brush and vacuum clean the switch
housing.
4.
Refit the switch housing taking care not to trap
any leads.
CAUTION - testing for electrical safety
should only be undertaken by a
competent person and all results
recorded.
Do not exceed 1250 volt
insulation test duration of 3 seconds
ELECTRICAL TESTING
8