Advertisement
% DO NOT use grinder where there are flammable liquids, solids or gases such as paint solvents and including waste wiping or cleaning rags.
% DO NOT touch the workpiece close to the ground surface as it will be very hot. Allow to cool. The workpiece may also be very sharp.
% DO NOT operate the grinder when you are tired or under the influence of alcohol, drugs or intoxicating medication.
% DO NOT leave the grinder operating unattended.
! When not in use switch off the grinder and disconnect from the mains power supply. Clean the machine and work area.
2. INTRODUCTION & SPECIFICATION
The BG250XL is fitted with stone guards, adjustable eyeshield and spark arrestors, an induction motor for general grinding and sharpening
operations and fine and coarse grade grinding stones.
Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750W
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .230V
Axle Diameter . . . . . . . . . . . . . . . . . . . . . . .16mm
3. ASSEMBLY & INSTALLATION
Unpack the product and check contents. Should there be any damaged or missing parts contact your
supplier immediately.
F
WARNING! Before assembly check to ensure grinder is unplugged from mains.
3.1.
Securely bolt the grinder to a fireproof workbench using the base holes as a template.
Ensure the bench is able to support the weight of the grinder when in operation.
If mounting on a metal bench insulate the grinder by placing a suitable plank of wood
between the grinder base and the bench top.
3.2.
Assemble the eye shield (fig 1.1) by placing the connecting bracket (fig 1. 2) up against the
bracket support (fig 2. A) and fix with washers and screw (3). The slot in the bracket allows
you to adjust height of the shield, but ensure bracket is at least 2mm clear of the grinding wheel.
3.3.
Check that the tool rest is no more than 1.5mm from the wheel. The rest may be adjusted by
loosening the two locking bolts, moving the rest and re-tightening the bolts.
4.
GRINDING STONES
4.1.
MANDATORY SAFETY INSTRUCTIONS. (The following instructions must be observed together with Section 1 safety).
I
DANGER! use of a damaged stone is dangerous and may cause damage and/or personal injury.
F
WARNING! Ensure grinder is unplugged from mains power supply before attempting to change grinding stones (or wheel).
s
Only persons qualified under the “Abrasive Wheels Regulations” and holding a current grinding wheel certificate are authorised
p
to change and dress grinding stones (wheels).
!
Grinding stones (wheels) used with this machine must be of an adequate speed rating and suitable for the material to be ground.
!
Ensure that the specified maximum speed of the grinding stone is higher than that indicated on the machine data plate.
!
Check that grinding stones are secure and that the stones are not worn or damaged, that there are no fissures or cracks. If damaged, replace immediately.
!
Ensure replacement stone is not damaged in any way - cracks, deformations, splinters etc. Also check the mounting flanges to ensure
these are not deformed, burred or chipped. Damaged items must NOT be used as they may cause the stone to break as a result of
uneven pressure. DO NOT over tighten a stone. Never tamper with a stone in order to adapt it to different size holder.
!
Install a new stone as in 4.2.
4.2.
Stone Changing Procedure.
4.2.1. Remove the eye shield. Protect the plastic viewer from scratching.
4.2.2. Loosen and pull the tool rest out as far as possible.
4.2.3. Remove the three screws from the side of the wheel cover and remove the cover. WARNING! Take care as the
guard ring (fig 3.B, to which the eye shield had been attached at point A) is compressed and will spring outward
when the outer cover is removed.
4.2.4. Hold grinding stone firmly. To protect your hands use cloth or wear gloves. Unscrew retaining nut (fig 4.1).
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 the heel of your hand to loosen the nut.
4.2.5. Remove grinding stone washer (fig 4.2), blotter (3), stone (4), 2nd blotter (3), from main spindle (X).
4.2.6.
If wheel insert (fig 4.5) is in bore of stone, remove it. If insert is on shaft leave it there.
4.2.7. Carefully inspect the new stone before installing to ensure that there are no chips or cracks.
F
WARNING! DO NOT USE A DAMAGED STONE.
4.2.8. Inspect the blotters (fig 4.3) If they are damaged replace them. The grinder must never
p
be used without these blotters. Should you not have any available when you need to
replace them, cut the same shape from suitable cardboard, for temporary use only.
4.2.9. If loose, press wheel insert (fig 4.6) into the bore of the new stone.
4.2.10. Install the new stone by reversing steps above. Check that the insert (6) is central in the bore
of the stone and ensure that washer (2) is fitted with the flat outer face against the blotter.
4.2.11. Hold stone steady and secure locking nut. DO NOT over tighten as this may crack the stone.
4.2.12. Align the eye shield attachment bracket (fig 3.A) of the guard ring (B) with the upper most part of the back shield plate at point (C).
Place the outer cover over the guard ring and pass securing screw through the upper holes and secure with the washers and nut (D),
finger tight only. Tension the guard ring (B) around the rim of shield and secure with the back cover screw and nut. Finally ensure the
bottom of the guard ring is correctly fitted between the inner and outer covers and fix with the bottom screw and nut. Tighten the
locking screws and nuts. Replace eye shield and re-adjust tool rest to a maximum of 1.5mm from stone face and tighten securely.
NOTE: IF FITTING A WIRE WHEEL, IT MUST HAVE A 16MM BORE AS THE GRINDING WHEEL INSERT WILL NOT FIT A WIRE WHEEL.
s
p
p
p
No Load Speed . . . . . . . . . . . . . . . . . . . .2800rpm
Fitted with . . . . . . .1 x fine stone, 1 x course stone
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30kg
F
WARNING! Unplug grinder from the mains power supply before changing stone.
p
fig 1
fig 2
fig 3
fig 4
BG250XL - 0064 - (2) - 090801
Advertisement
