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Adjusting the Castors
The castors are set to achieve the correct contact
area across the sanding pad as illustrated in the
diagrams above.
1.
To check the castor setting place a clean sheet of
glass across the two castors and the sanding pad.
Inserting a 0.005" feeler gauge (or a sheet of
paper) between the glass and the sanding pad.
Check the correct contact area is achieved (see
diagram above - Sanding Pad Static Contact
Area)
An alternative method is to lightly dampen the
rubber sanding pad and then place the glass
sheet across the two castors and sanding pad.
Apply light pressure to the glass sheet, which will
witness the dampened area of the sanding pad
in contact with the glass.
WARNING - use toughened glass only
with a minium thickness of 1/4” with
rounded/polished edges. Take care
when handling glass. Always use suitable
gloves, eye protection and protective
clothing.
2
To adjust the castors loosen the two castor lock
nuts using the special tool Part No. R011720 and
5mm ball allen key. Adjust the castors and check
the contact area on the sanding pad. When the
contact area is correct tighten the two castor lock
nuts securely. Use a suitable thread lock
compound. Finally check the contact area is still
correct after tightening the castor lock nuts.
4.
Trim the sanding pad as detailed above.
Electrical Testing.
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.
CAUTION - when undertaking a
functional (run) test make sure the
machine is secure. Remember the
sanding disc will rotate..
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.
3.
Remove the four Screws Ref.1 and lift off the
Cover Motor Ref.4 to 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
and brush block assembly and inside the cover
motor.
4.
Refit the cover motor taking care not to trap any
leads.
5.
Using a piece of insulation tape or a small soft
wedge lock the bias off switch in the ‘ON’
position.
6.
Use the standard test for electrical safety for a
grounded (earthed) appliance. Do not exceed
1250 volt insulation test duration of 3 seconds.
7.
Record the test results.
8.
Complete a functional (run) test and record
results.
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