Operating Instructions Manual BMG-2500 MULTI GRINDER
29
JANUARY 2005
© International Surface Preparation Group, Inc.
Tungsten Carbide Cutters
The Blastrac BMG-2500 can be converted with optional tool holders for use with tungsten
carbide cutters. The machine can be switched from the tool holders for diamond plugs by
unbolting them and replacing with the other style accessory plates. Accessory plates on
the BMG-2500 are nearly identical. You must verify rotation in order for the carbide inserts
to perform properly.
Installation and replacement of tools is accomplished by:
•
Dissconnect power source
•
Tilt machine back allowing the handle with weights to come to rest on the floor. Secure the
machine from moving across the floor or rotating forward to the work surface.
•
Clean mounting surface of the tungsten carbide block holders.
•
Mount the tungsten carbide block holders, verifying that they are facing in the right direction. The
blocks must be mounted facing the direction of travel. Failure to do so will prevent the proper
operation of the machine and will cause damage to the tungsten carbide cutters and holders.
Securely tighten the mounting bolts to the block holders. Per figure 15.
•
Install the tungsten carbide cutters as shown in figure 15. Using two (2) cutters per block,
installed with one in the middle position and one in the outer position, will provide the best general
performance. This will allow the machine to clean near to the guard, and therefore nearest to the
wall or limits of the floor you are preparing.
•
Make sure that the cutters are seated on the blocks properly and that the mounting bolts and nuts
are hand tight. This will allow the cutters to flex with uneven floors. Remove any hand tools from
the bottom area of the machine.
•
Gently raise the handle and lower the machine head down to the floor, being careful not to jolt the
machine against the floor.
Block
Carbide cutter
Block holder
plate
Direction of travel
Hand tight screw
Floor
Figure 16 – Square tungsten carbide
cutters mounted on holder block
Figure 15 – Holder blocks attached to
block holder plate. (Note :) Blastrac
has incorporated 3 possible positions
for holder block positioning. 90, 67.5,
and 45 degree angles allow better
functionality in various work
conditions. (SEE BELOW)
