Crown 248655, Original Instructions Manual

Page: 17 / 124

17
English
it with compressed air� Attention: in case of cleaning
dust-collecting container 7 with water, use it only
after complete drying.
• Install the cover 9 on its place - both cover plastic
holding locks 9 should click�
Initial operating of the power tool
Always use the correct supply voltage: the power sup-
ply voltage must match the information quoted on the
power tool identification plate.
Switching the power tool on / off
Switching on:
Move on / off switch 3 forward (see fig. 4.1).
Switching off:
Move on / off switch 3 backward (see fig. 4.2).
Dust suction during the power tool op -
eration
Dust collection decreases dust concentra-
tion in the air and prevents build up of dust
at the work station�
Use of vacuum cleaner
During prolonged wood machining or when processing
materials that produce dusts hazardous to health, the
power tool should be connected to a proper vacuum
cleaner�
Given power tools may cooperate with the vacuum
cleaner only when used with a relevant connector�
One should monitor dust level in the bag and empty the
bag at relevant time, taking the aforesaid precautions�
Design features of the power tool
Oscillation rate regulator
The oscillation rate regulator 1 is purported to set the
desired oscillation rate of sanding plate
5
�
The required oscillation rate depends on the type of
processed material, work conditions and must be set
on the basis of practical trials for best results�
During prolonged work at low oscillation rate, one
should allow the power tool to cool down for 3 min-
utes� For this purpose, set the maximum oscillation
rate and allow the power tool to work without load�
Recommendations on the power tool op -
eration
Sanding sheet selection
• Prior to commencement of work, select the sanding
sheet type that is most suitable for the processed ma-
terial or surface. The type of sanding sheet is specified
on the package� One may also ask the vendor for more
information�
• Various works require the use of sanding sheet of
different coarseness, allowing a surface of required
smoothness to be obtained:
• in order to flog timber or unplanned boards, re -
move paint or rust, it's recommended to use abra-
sive paper with 40-60 grain size;
• in order to remove minor roughness on surface of
wooden blanks, polish prime coating etc�, it's recom-
mended to use abrasive paper with 80-120 grain size;
• for fine polishing of wooden blank surfaces,
grinding of hardwood of prime coatings before
painting, it's recommended to use abrasive paper
with 180-320 grain size�
• The data above are a recommendation only, the
best method to select the grain size for the treated ma-
terial is practical testing�
Sanding
Prior to commencement of work one
should perform test sanding on an un -
necessary element (made of the same
material or with the same coating as the
machined component) to ensure that the coarse -
ness and type of sanding sheet, as well as the
oscillation frequency of the sanding plate 5 have
been selected properly.
• Ensure that the element to be sanded is firmly se -
cured�
• Turn on the power tool earlier, before sanding
plate 5 touches the element to be sanded and allow
the engine of the power tool to reach maximum oscil-
lation rate�
• Apply sanding plate 5 to the surface of the machined
element and move the power tool in circular or recip-
rocating motion�
• Perform sanding with the whole surface of sanding
plate 5 �
• Do not press the power tool excessively, since this
will not provide better results, but will only overload the
engine of the power tool and will result in higher sand-
ing sheet consumption�
• Do not stop the power tool in a single spot this will
result in a depression in the stoppage place�
• At relevant time, replace the used or dust-blocked
sanding sheets�
• Use sanding sheets of varying coarseness com-
mence the work with a coarse sheet and gradually pro-
ceed to finer sheets. It will make the work faster and
will result in smoother surface�
• Do not reuse sanding sheets that were previously
used for sanding metal for any other materials�
Power tool maintenance / preventive
measures
Before carrying out any works on the power tool it
must be disconnected from the mains.
Cleaning of the power tool
An indispensable condition for a safe long-term exploi-
tation of the power tool is to keep it clean� Regularly
flush the power tool with compressed air thought the
ventilation slots 2 �
After-sales service and application service
Our after-sales service responds to your questions
concerning maintenance and repair of your product as