GMC 943378 Manual Download Page 10

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Intended Use

• Multi-purpose rotary polishing machine, used for light to medium duty

polishing tasks, using suitable polishing bonnets and compounds

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

WARNING: ALWAYS disconnect the machine from the power supply before
fitting or removing backing pads or accessories.

Assembling the Front Handle

• The Front Handle (8) must be fitted to the machine before use
• Screw the Front Handle (8) clockwise into the mounting point on the gear

housing (see ‘Product Familiarisation’). Tighten by hand

• To remove the handle, unscrew anti-clockwise

Fitting the Backing Pad

• The Backing Pad (2) must be securely fitted to the Spindle (3) before use:
1. Press and hold the Spindle Lock Button (4) with one hand, and slowly rotate

the spindle with the other hand, until you feel it lock

2. The backing pad can now be screwed onto the spindle and tightened
WARNING: The backing pad is tightened by hand. Take care not to cross-thread
or over-tighten.
3. Release the Spindle Lock Button

Fitting bonnets, polishing sponges and discs

• The Polishing Bonnet (1) must be securely fastened to the Backing Pad (2)
• Other polishing accessories with M14 thread, such as polishing sponges (not

included) may be mounted directly on to the Spindle (3)

WARNING: ONLY fit accessories with a max speed rating higher than the max
no load speed of this machine (see ‘Specification’).

Operation

WARNING: ALWAYS wear adequate protective equipment, including eye, hand
and hearing protection, when operating this machine. Use respiratory protection
where dust or fumes are produced.

Switching on and off

WARNING: Never switch the tool on or off when it is in contact with the
workpiece. This can cause serious injury to the operator and will significantly
shorten the service life of the On/Off Switch (9).
1. Connect the machine to the power supply
2. Hold the tool securely with both hands: one hand on the Rear Handle (6), the

other hand on the Front Handle (8)

3. Slide the On/Off Switch (9) to the left position, to start the machine
4. Allow the tool to reach the speed required before bringing the machine into

contact with the workpiece

5. Remove the polisher from the workpiece before switching off
6. To stop the machine, slide the On/Off Switch into the right position
WARNING: ALWAYS wait until the machine has come to a standstill before
putting it down.

Adjusting tool speed

•  The speed of the machine is controlled using the Control Panel (5):
1.   Press the Speed Up Button (11) to increase speed
Note: The Speed Display (10) will show the chosen speed setting.
2.   Press the Speed Down Button (12) to decrease speed
WARNING: Always set the control panel to the correct speed for the task at
hand.

Polishing tips

• Ensure that the area to be polished is clean and dry
• Choose only polishing compounds that are compatible with the material to

be polished, and with the method of application. Read and understand all
information supplied with your polishing compound before use

• If using polishing sponges, apply polishing compound evenly to the polishing

sponge and place the sponge against the work surface

• Hold the machine securely, using both hands, by the handles provided. The

polishing sponge should make only light contact with the work surface

• Switch on the machine, and work across the surface using a wide 'sweeping'

motion. Stop and apply extra compound as required

• When the entire surface has been covered, stop the machine and allow the

compound to dry (follow manufacturer’s guidance)

• Attach a clean polishing bonnet to the machine and work across the surface