CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
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ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
2.0 MACHINE SET UP
2.1 Setting up the Belt Sander
❑
Position the sander in your desired location. For best results, the sander should be level and secureed to a work bench or stand.
The machine can be fastened down securely with clamps or by drilling holes and bolting the frame base down.
❑
With the belt sander switch in the OFF position, plug the sander into a 115 volt, single phase, 60 cycle grounded outlet.
NOTE:
A correctly grounded plug is provided for your safety. DO NOT ALTER IT IN ANY WAY.
Be sure the guard on the right side
of the machine is closed. Now turn the switch on to see if the motor will run. If it runs, turn it off and go to the next step. If it does
not run, check the power supply and all electrical connections and activate the ON switch again.
If you still have a problem,
please call us before going any further.
❑
Unplug the sander before going any further.
Be sure the water valve is closed and fill the water reservoir. Turn the water
valve on and make sure theat water is getting to the bottom pulley from the tube inside the tank. Turn the water valve off. (Photo 2
and 8, page 8)
❑
Pull the handle to open the side door. Now install a belt over the top and bottom pulley and over the platen by pulling down on
the black handle on the tensioner mechanism. Be sure the belt is not wrapped over the spray tube in the bottom of the tank.
NOTE: When grinding glass, only “wet or dry” belts with silicon carbide grain should be used. They come with two
types of splices: Overlapping or butt splices. Butt splices can be run in either direction (such as CRLʼs finger splice).
Overlapping splices can be run only in the direction indicated by arrows on the inside of the belt. The most common
way to put lapped spliced belts on a belt sander is to put the belt over the pulleys so you can see the arrow pointing up
on the back side of the belt. This will give you the proper rotation.
❑
With the sander still unplugged, pull the belt by hand through several cycles to adjust the tracking mechanism. Do this as follows:
On the left side of the tensioner assembly (as viewed from the side of the sander) is a black metal, star shaped knob. By turning
this knob clockwise you will move the belt to the right. By turning this knob counterclockwise you will move the belt to the left.
Turn this knob until you have adjusted the belt so it will stay in the middle of both pulleys when pulling the belt by hand.
❑
Now close the side door, plug the machine back in, turn the switch ON, and perform the fine tracking adjustments. The goal is to
have the belt track in the middle of both the upper and lower pulleys.
❑
The belt tension on the BM64B is not adjustable, and is controlled by the gas cylinder on the tensioner. No adjustment is
needed, and the cylinder is available as a replacement part should the tension ever become too weak.
3.0 GENERAL GUIDELINES
3.1 Using the Belt Sander
❑
The application of the glass and the choice of belt grits are largely a matter of the individual operatorʼs preference, but the
following procedures are submitted as a guide for general work.
❑
To obtain a round or pencil edge, use a coarse grit belt and lightly bevel the sharp edges left from cutting by running or swiping
glass quickly across the belt. This helps to reduce chipping the glass during succeeding grinding. Draw the glass slowly across
the unsupported area of the belt above the platen, and at the same time tilt the glass up and down until the desired contour is
obtained. Finish the edge on a smoothing belt and then polish if desired. Keep hands away from the Belt and Platen at all times.
❑
For a flat, seamed edge, use a belt of medium grit and lightly bevel the edges as above. Next, grind the entire edge flat by applying
the glass squarely to the platen. Change to a finishing or smoothing grit and go over the flat edge again, then seam both
sides of the glass by tilting it about 45° and running it across the belt on the platen.
❑
Rough grinding can be done by using abrasive belts in grit sizes 40, 60, 80, and 120.
Belts of 150, 180, 220 and 280 grits are for smoothing.
Grits 320 and 400 work well for satin finishing.
600 grit and cork belts are for extra smooth, high polishing.
See page 11
of this manual for a list of CRL Belt Part Numbers.
3.1 Equipment needed for Safe Operation
The following items for operators are required for safe operation of the machine:
1. Cut Resistant Gloves ..................................................................CRL Gloves, Cat No.
234L
or
234M
2. Respirator .................................................................................CRL Cat No.
G1001
or
ES8710
3. Hearing Protection ......................................................................CRL Cat No.
ES515x1
4. Safety Glasses with Side Shields ...............................................CRL Cat No.
SH610
5. Safety Shoes (Reinforced Toe), Waterproof
6. User Manual or Instruction from a supervisor or CRL/Somaca installation technician.
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