Product Familiarisation; Intended Use; Unpacking Your Tool; Before Use - GMC GBS850 Manual De Uso

i. Be especially careful when using a machine for both wood and metal sanding.
Sparks from metal can easily ignite wood dust. ALWAYS clean your machine
thoroughly to reduce the risk of fire
j. Empty the dust bag or container (where applicable) frequently during use, before
taking breaks and after completion of sanding. Dust may be an explosion hazard. DO
NOT throw sanding dust into an open fire. Spontaneous combustion may occur when oil
or water particles come into contact with dust particles. Dispose of waste materials
carefully and in accordance with local laws and regulations.
k. Work surfaces and sandpaper can become very hot during use. If there is evidence
of burning (smoke or ash), from the work surface, stop and allow the material to
cool. DO NOT touch work surface or sandpaper until they have had time to cool
l. DO NOT touch the moving sandpaper
m. ALWAYS switch off before you put the sander down
n. DO NOT use for wet sanding. Liquids entering the motor housing can cause severe
electric shocks
o. ALWAYS unplug the sander from the mains power supply before changing or
replacing sandpaper
p. Even when this tool is used as prescribed it is not possible to eliminate all residual
risk factors. If you are in any doubt as to safe use of this tool, do not use it

Product Familiarisation

1. Belt Tracking Adjuster
2. Front Handle
3. Lock On Button
4. Rear Handle
5. Mains Cable
6. Dust Extraction Port
7. Drive Belt Housing Cover
8. Fixing Channel
9. On/Off Trigger
10. Front Roller
11. Framing Slots
12. Belt Release Lever
13. Base
14. Rear Roller
15. Inversion Clamps
16. Inversion Adaptor
17. Vacuum Adaptor
18. Dust Bag
Accessories (not shown)
• 1 x Sanding Belt (100 grit)

Intended Use

Medium to heavy duty belt sander for removing large amounts of material. For use on soft
and hard wood, and similar materials.

Unpacking Your Tool

• Carefully unpack and inspect your new tool. 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

WARNING: Ensure the tool is disconnected from the power supply before attaching or
changing any accessories, or making any adjustments.
Selecting the right grade of sanding belt
• Different grades of sanding belt can be purchased from your local GMC stockist. Typical
grades are: Coarse (40 Grit), Medium (80 and 100 Grit), and Fine (120 Grit)
• Use coarse grade to remove rough finishes, medium grade to smooth the work and fine
grade for finishing
• Carry out a trial run on a scrap piece of material to determine the optimum grades of belt
for a particular job
• In order to take full advantage of your sander, always purchase good quality belts
Note: After sanding with a belt sander, an orbital sander can be used to provide a smoother
surface finish. This process will, however, lead to the loss of wood grain detail. Additional
sanding with an orbital sander is advisable if you plan to paint the wooden surface, or if you
do not need to maintain the visibility of the wood grain.
Fitting a sanding belt
1. Place the sander upside down on a workbench or a similar secure, flat surface
2. Pull out the Belt Release Lever (12). This retracts the Front Roller (10) and slackens the
sanding belt. The worn belt can now be removed
3. Fit the new Sanding Belt, positioning it squarely over the rollers
Note: Ensure the Sanding Belt is fitted in the correct orientation. Sanding Belts are
directional; the arrows on the belt should correspond with the directional arrows on the Rear
Roller (14).
4. Close the Belt Release Lever. The belt should now be taut and secure
5. Once fitted, it may be necessary to adjust the Belt Tracking Adjuster (1) to ensure the belt
runs true
6. Keep the sander inverted and connect it to the power supply
7. Hold the sander firmly by the Rear Handle (4) and depress the On/Off Trigger (9). Observe
any sideways motion of the belt
8. If needed, turn the Belt Tracking Adjuster (1) clockwise to move the belt left, or anti-
clockwise to move the belt right until the belt runs true
9. Disconnect the sander from power supply
Connecting the dust extraction system
• Connecting the tool to a vacuum cleaner or workshop dust extraction system is the
preferred method of dust extraction
• Connect the tool to a dust extraction system by push-fitting the Vacuum Adaptor (17) to the
Dust Extraction Port (6) before attaching the extraction device
• If vacuum dust extraction is unavailable, the Dust Bag (18) should be fitted to the Dust
Extraction Port (6):
• Push-fit the Dust Bag on to the Dust Extraction Port
• Remove the Dust Bag by simply pulling the bag rearward away from the tool
WARNING: Remove and DO NOT use the dust bag when sanding metal. Hot metal particles
and sparks could ignite residual wood dust, or cause the bag to catch fire. Always connect
the sander to a vacuum cleaner or workshop dust extraction system when sanding metal.
Always clean the tool THOROUGHLY when switching from sanding wood to sanding metal,
and vice versa.
7
GB