Hints For Optimum Use - Stanley STSC1840 Original Instructions Manual

ENGLISH
Leaving the battery in the charger
The charger and battery pack can be left connected with the
LED glowing indefinitely. The charger will keep the battery
pack fresh and fully charged.
Charger diagnostics
If the charger detects a weak or damaged battery, the charg-
ing indicator (10) will flash red at a fast rate. Proceed as
follows:
Re-insert the battery (7).
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If the charging indicators continues flashing red at a fast
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rate, use a different battery to determine if the charging
process works properly.
If the replaced battery charges correctly, the original
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battery is defective and should be returned to a service
centre for recycling.
If the new battery gives the same indication as the original
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battery, take the charger to be tested at an authorised
services centre.
Note: It may take as long as 30 minutes to determine that
the battery is defective. If the battery is too hot or too
cold, the LED will alternately blink red, fast and slow, one
flash at each speed and repeat.
Switching on and off
To switch on, slide the lock off switch (1) forward then
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press and hold the trigger switch (2).
To switch off, release the trigger switch (2).
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Warning! Do not switch the tool on or off while under load.
Warning! Always slide the lock off switch (1) backwards to the
locked position when the tool is not in use.

Hints for optimum use

Firmly hold the tool with one hand around the side handle
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and the other hand around the main handle.
Surface grinding with grinding wheels
Allow the tool to reach full speed before touching the tool
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to the work surface.
Apply minimum pressure to the work surface, allowing the
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tool to operate at high speed. Grinding rate is greatest
when the tool operates at high speed.
Maintain a 20˚ to 30˚ angle between the tool and work
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surface.
Continuously move the tool in a forward and back motion
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to avoid creating gouges in the work surface.
Remove the tool from work surface before turning tool off.
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Allow the tool to stop rotating before laying it down.
Edge grinding with grinding wheels
Wheels used for cutting and edge grinding may break or
kick back if they bend or twist while the tool is being used
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(Original instructions)
to do cut-off work or deep grinding. To reduce the risk of
serious injury, limit the use of these wheels with a standard
Type 27 guard to shallow cutting and notching (less than 1/2
inch (13mm) in depth). The open side of the guard must be
positioned away from the operator. For deeper cutting with
a Type 1 cut-off wheel, use a closed Type 1 guard. See the
Grinding and cutting chart which can be found at the back of
language section.
Allow the tool to reach full speed before touching the tool
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to the work surface.
Apply minimum pressure to the work surface, allowing the
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tool to operate at high speed. Grinding rate is greatest
when the tool operates at high speed.
Position yourself so that the open-underside of the wheel
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is facing away from you.
Once a cut is begun and a notch is established in the
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workpiece, do not change the angle of the cut. Changing
the angle will cause the wheel to bend and may cause
wheel breakage. Edge grinding wheels are not designed
to withstand side pressures caused by bending.
Remove the tool from the work surface before turning
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the tool off. Allow the tool to stop rotating before laying it
down.
Do not use edge grinding/cutting wheels for surface grinding
applications because these wheels are not designed for side
pressures encountered with surface grinding. Wheel breakage
and injury may result.
Surface finishing with sanding flap discs
Allow the tool to reach full speed before touching the tool
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to the work surface.
Apply minimum pressure to work surface, allowing the tool
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to operate at high speed. Sanding rate is greatest when
the tool operates at high speed.
Maintain a 5˚ to 10˚ angle between the tool and work
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surface.
Continuously move the tool in a forward and back motion
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to avoid creating gouges in the work surface.
Remove the tool from work surface before turning tool off.
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Allow the tool to stop rotating before laying it down.
Using sanding backing pads
Choose the proper grit sanding discs for your application.
Sanding discs are available in various grits. Coarse grits yield
faster material removal rates and a rougher finish.
Finer grits yield slower material removal and a smoother
finish.
Begin with coarse grit discs for fast, rough material removal.
Move to a medium grit paper and finish with a fine grit disc for
optimal finish.
Coarse 16 - 30 grit
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Medium 36 - 80 grit
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Fine Finishing 100 - 120 grit
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