Intended Use; Unpacking Your Tool; Before Use - GMC ROS150CF Manual

Intended Use

• Random orbit sander with two interchangeable Sanding Bases for medium duty sanding
tasks on various materials

Unpacking Your Tool

• Carefully unpack and inspect your tool. Fully familiarise yourself with all its features and
functions
• Ensure that all parts of the tool are present and in good condition. If any parts are missing
or damaged, have such parts replaced before attempting to use this tool

Before Use

GB
Selecting the right grade of sanding sheet
• Sanding sheets are available in a variety of different grades: coarse (60 grit), medium
(120 grit) and fine (240 grit)
• Use a coarse grit to sand down rough finishes, medium grit to smooth the work, and fine
grit to finish off
• Always use good quality sanding sheets to maximise the quality of the finished task
• It is advisable to do a trial run on a scrap piece of material to determine the optimum
grades of sandpaper for a particular job. If there are still marks on your work after
sanding, try either going back to a coarser grade and sanding the marks out before
recommencing with the original choice of grit, or try using a new piece of sandpaper to
eliminate the unwanted marks before going on to a finer grit and finishing the job
Fitting a sanding sheet
WARNING: Always ensure that the tool is switched off and the plug is removed from the
power point before fitting or removing sanding sheets.
Note: Do not continue to use worn, torn or heavily
clogged sanding sheets. Ensure foreign objects,
such as nails and screws, are removed from the
workpiece before starting to sand.
WARNING: Do not use a sanding sheet on wood
that has previously been used on metal. This may
cause scouring on the wooden surface.
1. Remove any dust or debris from the Sanding
Base (8), before fitting a sanding sheet
2. Match the holes in a suitable sheet with the
holes in the base
3. Simply press the sheet to the base to attach it
4. To remove the sheet, peel it away from the
base
Note: To maximise the life of the hook and loop base, peel the sanding sheet off slowly rather
than rapidly removing it to avoid damage to the hook and loop system.
WARNING: Take care to regularly clean out the build-up of dust on the base underneath the
sanding sheet and not to let the sheet wear completely down before replacing it. Failure to
observe these two precautionary measures can lead to damage to the hooks and loops on
the base, and the sanding sheet will not attach properly.
WARNING: Never use the sander unless the entire base is covered by the sanding sheet.
Adjusting the auxiliary handle
• This sander features two handles: the Main
Handle (5) with rubber grip and the Auxiliary
Handle (1). The latter can be adjusted to suit
the operator's needs
1. To adjust the Auxiliary Handle, loosen the
Auxiliary Handle Locking Knob (9) until you are
able to move the handle easily into the desired
position
2. Re-tighten the Auxiliary Handle Locking Knob
WARNING: Always use both handles when
operating this sander. NEVER use the machine
when the Auxiliary Handle is not properly adjusted
and securely fastened.
Changing the base
WARNING: Always ensure that the tool is
switched off and disconnected from the power
supply, before making any adjustments or carrying
out maintenance procedures.
• This sander is supplied with two
interchangeable bases: a 150mm Sanding
Base (8) fitted to the tool on purchase, and a
125mm Sanding Base (10) which is supplied
as an accessory
• To change Sanding Bases:
1. Turn the sander upside down and remove the
four hex screws using the supplied hex key.
Take off the base assembly
2. Place the replacement base assembly on the tool and secure it with the four hex screws,
using the hex key
Dust extraction
WARNING: Always ensure that the tool is switched off and disconnected from the power
supply before attaching or removing any accessories.
WARNING: Always connect the sander to a suitable vacuum cleaner or workshop dust
extraction system if the sanding dust contains harmful substances, such as particles from old
paint, varnish, surface coatings etc. Always dispose of harmful dust according to laws and
regulations.
WARNING: Take special care to guard against harmful and toxic dusts when sanding lead-
based painted surfaces, woods and metals, particularly if you are unsure about the exact
substances involved. All persons entering the work area must wear a mask specially designed
for protection against the toxic dust and fumes involved. Children and pregnant women MUST
NOT enter the work area. DO NOT eat, drink or smoke in the work area.
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