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install a new wheel as in 5.2. once mounted on the grinder test the wheel before use by facing the grinder in a safe direction (point it
away from yourself, others and vulnerable items) and run for a short time. dress the wheel if necessary.
5.2.
Wheel Changing Procedure.
‰
WARNING! unplug grinder from the mains power supply before changing wheel.
5.2.1.
loosen the three screws and turn the wheel cover anticlockwise and remove.
Hold grinding wheel firmly - protect your hands with a cloth, or wear gloves. Unscrew retaining nut (fig.3.1).
5.2.2.
Note: the nut on the right side of the grinder has standard right-hand thread (undo anti-clockwise). the left side nut has a left-hand
thread and must be loosened by turning clockwise. it may be necessary to strike the wrench sharply in the loosening direction, with a
soft-faced hammer, to loosen the nut.
5.2.3.
Remove grinding wheel washer (fig.3.2), blotter (3), wheel (4), 2nd blotter (5) and washer (6) from main spindle (7).
Carefully inspect the new wheel before installing to ensure there are no fissures, chips, or cracks.
5.2.4.
‰
WARNING! DO NOT uSE A DAMAGED WHEEL.
5.2.5.
inspect the blotters - if they are damaged, replace them. the grinder must never be used without genuine wheel blotters.
5.2.6.
Install the new wheel by reversing steps above. Ensure washers (2 & 6) are installed correctly with the concave side against the
blotter.
Hold wheel steady and secure locking nut. DO NOT over-tighten as this may crack the wheel.
5.2.7.
5.2.8.
replace wheel cover.
5.2.9.
5.2.10.
fig.3
5.2.11.
5.2.12.
5.2.13.
5.2.14.
5.2.15.
5.2.16.
5.2.17.
5.2.18.
5.2.19.
5.2.20.
5.2.21.
5.2.22.
5.2.23.
6. OPERATION
6.1.
Pre-use Inspection.
WARNING! INSPECT THE GRINDER BEFORE USE. ENSURE THE GRINDER IS UNPLUGGED FROM THE MAINS POWER
‰
BEFORE COMMENCING THE INSPECTION.
6.1.1.
Check the tool rests are securely fixed and are not more than 2mm from the grinding wheels.
6.1.2.
check that eye shields are in good condition, secure and that you can see through them clearly.
6.1.3.
turn the grinding wheels by hand and check for any damage. check they do not touch the tool rests and are correctly aligned.
6.1.4.
If any of the above checks fail, replace, repair, or adjust as necessary before starting the grinder.
6.2.
Wheel use.
6.2.1.
The grinder is supplied with two aluminium oxide wheels, one course and one fine. Fine is preferred for hard materials and coarse for
soft materials.
6.2.2.
If the surface of the wheel becomes "loaded" (coated with particles of the material being ground) it is probably the wrong grade for the
job. Important reminder: Only a person holding a grinding wheel certificate may install wheels. See Section 5.
6.3.
using the Grinder.
WARNING! Before commencing work, ensure you read, understand and apply the Section 1 Safety Instructions.
‰
6.3.1.
Plug grinder into the mains power supply.
6.3.2.
Adjust the eye shield to give maximum protection.
6.3.3.
switch on the grinder and bring the workpiece slowly into contact with the rotating wheel.
6.3.4.
When the task is complete unplug the grinder from the mains power supply and clean the machine ready for next use.
6.3.5.
Lockable Switch Refer to fig.4
6.3.6.
The black centre section of the on/off switch pulls out to prevent unauthorised use.
6.3.7.
Overload Protection Fuse Refer to fig.5.
WARNING! ENSURE THE GRINDER IS UNPLUGGED FROM THE MAINS POWER BEFORE CHANGING THE FUSE. ONLY
‰
REPLACE THE FUSE WITH ONE TO THE CORRECT SPECIFICATION.
6.3.8.
An overload protection fuse is fitted to the circuit board on the top of base cover assembly. Carefully turn the grinder on to its side.
6.3.9.
remove the four screws in each of the four suction feet on the base, remove the base cover and turn the board over. the fuse location
is shown in fig.5.
© Jack sealey limited
Original Language Version
fig.4
BG150WVS,BG200WVS | Issue 2 28/10/16
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