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ELECTRICAL AFETY
A RCCB (Residual Current Circuit Breaker) should be fitted in the mains
electricity distribution board.
PLUG FITTING
A moulded U 3 pin plug with ASTA/BS approval is already fitted for your
safety. If it becomes damaged, and needs replacing, cut off the plug and
prepare the wires. Use the following instructions:
a) Connect the GREEN/YELLOW earth wire to the earth terminal marked
either ‘E’ or with the earth symbol ‘ ’.
b) Connect the BROWN live wire to the live terminal marked ‘L’.
c) Connect the BLUE neutral wire to the neutral terminal marked ‘N’.
d) After wiring, check there are no bare wires, that all wires have been correctly connected, that the cable
external insulation extends beyond the cable restraint and that the restraint is tight.
Yellow & Green = Earth wire
Brown = Live wire
Blue = Neutral wire
Cable restraint
UK
ONLY
ELECTRONIC INFORMATION
13amp
fuse
SPECIFICATIONS
Order code OSA-279-8000K
Motor input capacity 250W
Motor supply voltage 230V-240V/50Hz
No load speed 2950RPM
Wheel size 150 x 20 x 12.7mm
Size inc. guards (HxWxD) 250 x 320 x 230mm
Net weight 7.5kg
WHEEL REPLACEMENT
When the distance between the outer diameter of the grinding
wheel and the edge of the work support is greater than 5mm,
the grinding wheel needs to be replaced.
Checking New Grinding Wheels
New grinding wheels must be tested using a “ringing test”
method. A light tap on the grinding wheel with a light non-
metallic implement or knocking the grinding wheel against a
surface, will produce a clear ringing sound which will indicate
that it is intact.
Changing A Grinding Wheel
1. Loosen the three screws.
2. Remove the outer covering plate.
3. Remove the holding nut, flange and grinding wheel.
4. Insure that the second flange remains on the shaft.
5. Put the replacement grinding wheel onto the shaft.
6. Replace the flange and the nut.
7. Secure the nut fully but do not over tighten.
8. Remount the covering plate with the three screws.
9. Adjust the spark deflector and work support to a 2mm gap.
A certain oscillation of the wheel is normal, up to 0.3mm in radial and 0.5mm in axial direction
measured at the circumference of the wheel.
ELECTRICAL SAFETY
1. Power tool plugs must match the outlet.
Never modify the plug in any way. Do not use
any adaptor plugs with earthed (grounded)
power tools. Matching plugs and outlets will
reduce risk of electric shock.
2. Avoid body contact with grounded surfaces
such as pipes, r a d i a t o r s , r a n g e s and
refrigerators. There is an increased risk of
electric shock if your body is grounded.
3. DO NOT expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
4. DO NOT abuse the cord. Never use the cord to
pull the plug from an outlet. eep the cord
away from heat, oil, sharp edges or moving
parts. Damaged cords should be replaced
immediately by qualified repair personnel.
Damaged cords will increase the risk of
electric shock.
5. When o p e r a t i n g the grinder in a d a m p
location or outside, use a heavy duty
extension cord in conjunction with a residual
current device (RCD) rated at 30mA or less.
