CRL BM64B Installation manual

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
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11M0411_9-14-19
(Starting with Serial NO. 69292) Includes AUBM64B for Australia
SET-UP and OPERATING INSTRUCTIONS

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
BM64B Machine Specications 115V AC
Dimensions: 686 x 457 x 991mm high
27” x 18” x 39” high
Shipping Weight: 91 kg. (200 Lbs.)
Motor: .745 Kw (1HP)
Volts: 115V AC
Amps: 12.4@115V
Phase/Hertz: 1/60
Max RPM: 1725
Sanding Belt 102 x 1625mm (4” x 64”)
Dimensions: 686 x 457 x 991mm high
27” x 18” x 39” high
Shipping Weight: 91 kg. (200 Lbs.)
Motor: .745 Kw (1HP)
Volts: 230V AC
Amps: 6.2@230V
Phase/Hertz: 1/50
Max RPM: 1725
Sanding Belt 102 x 1625mm (4” x 64”)
AUBM64B Machine Specications 230V AC
2

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
3
Contents
Specications ............................................................................................................. 2
Contents ............................................................................................................. 3
1.0 Introduction ........................................................................................................... 4
1.1 Introduction .................................................................................................... 4
1.2 Uncrating ....................................................................................................... 4
1.3 Safety Information ......................................................................................... 4
2.0 Machine Set Up ..................................................................................................... 5
2.1 Setting Up ...................................................................................................... 5
3.0 General Guidelines ............................................................................................... 5
3.1 Using the Belt Sander ................................................................................... 5
3.2 Equipment Needed ........................................................................................ 5
4.0 Maintenance .......................................................................................................... 6
4.1 Maintenance Schedule .................................................................................. 6
4.2 Lubrication ..................................................................................................... 6
4.3 Recut or Replace Pulleys .............................................................................. 6
4.4 Remove and Install Motor ............................................................................. 7
4.5 Remove and Install Sanding Belt/Pulleys /Roller Platen .............................. 7
4.6 Upper Pulley and Roller Platen Shaft and Bearings ..................................... 8
5.0 Reference Photos ................................................................................................. 8
5.0 Photos for Reference .................................................................................... 8
6.0 Replacement Parts Drawing ................................................................................ 9
6.1 Replacement Parts List ............................................................................... 10
6.2 Common Replacement Parts List w/Photos ............................................... 11
7.0 Troubleshooting .................................................................................................. 12
7.1 Troubleshooting Chart ................................................................................. 12
8.0 Wiring Schematic ................................................................................................ 13
8.0 Wiring Diagram ............................................................................................ 13
Page

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
INTRODUCTION
1.1 INTRODUCTION


machine incorporates features such as a direct drive, 1 H.P. motor,a gas cylinder-tensioned upper pulley, safety shields, totally sealed ball
bearings eliminating weekly lubrication, and aunique, rust-proof, thick-walled HDPE (High Density Polyethylene) water tank. It will give best

keep it in a safe operating condition.
We put sealed bearings in our machines because we found that most shops do not take the time to grease the bearings on a routine basis.
However, even sealed bearings do sometimes go bad, and should be inspected on a weekly basis for noise or rough spots. Scrubbing the
machine occasionally will prevent glass and sludge build-up, and any areas where rust is starting to show should be scraped, primed, and
repainted to get the maximum life out of the machine.
The instructions on the following pages will guide you through the unpacking, initial setup, maintenance, and replacement of parts on your
machine. Should you run into any problem or procedure you do not understand, please contact us via e-mail at [email protected] and we
will be glad to help you. Parts and expert advice can also be obtained directly from the CRL at [phone].
1.2 UNCRATING THE MACHINE


damage claim and have them send out an inspector. If everything is okay, completely remove the shipping container, including the wooden base.
󰀩
1.3 IMPORTANT SAFETY INFORMATION
● DO NOT operate this equipment unless you have read this manual and are familiar with
the machines operation.
● NEVER climb on the machine for any reason. Even if the machine is bolted down, there
is a risk of ijury from falling. No part of it is made to hold the weight of a person.
● DO NOT operate the machine without all guards and access doors/gates in place
and closed. Further, DO NOT disable any safety lock-out switches.
● ALWAYS pay attention to WARNING labels placed on the machine.
● ALWAYS wear proper protective gear when working with or grinding glass.
● HEARING PROTECTION MANDATORY. Wear hearing protection while operating.
● NEVER open electrical boxes or components unless the power is disconnected from the
source and locked out.
4

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●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
 󰀨
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
 󰀨
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 nger 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
❑
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.
5

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
6
4.0 MAINTENANCE
●
ALWAYS Shut off the machine and disconnect (unplug) the power from it's source
before performing any maintenance operation.
4.1 Maintenance Schedule
4.2 Lubrication
The only bearings on the sander that require lubrication are the motor bearings on certain motors ONLY.
If the motor has a grease fitting for applying lubrication (See Photo 3, page 8) follow intructions below.
Every Six Months. Apply grease sparingly. Overly greased bearings can create seal failure and eventually cause
bearing failure.
Type of grease: CRL Cat.No.WL14 No.2 lithium base grease.
Use CRL Cat.No.1200 Metal Lube on the belt door hinges.
4.3 Recutting / Replacing the Pulleys
After a year or two of continued machine use, the pulleys will wear and need to be replaced or have a new crown
machined in them. This is usually evident when you cannot get the belt to track and pulley adjustment will not
correct the tracking. To check this, lay a straight edge across the pulley. A new pulley will have a noticeable hump
or crown in the middle of it. A worn-out pulley will be flat or even have a valley in its center. If the pulley is worn, a
one degree crown should be remachined into the surface or the pulley should be replaced with a new one.
BM64B Maintenance Schedule
Maintenance Performed Weekly Monthly 6 Months
Wipe down/clean sander exterior YES --
Clean out/rinse water tank YES --
Check electrical cables for wear/abrasions YES --
Examine belts for breaks or frayed spots YES --
Check pulleys for alignment and tightness (see note 4.3) -YES -
 ---
Sand and repaint chips in exposed metal parts --YES
Check machine fasteners/mountings for tightness --YES

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
7
4.4 REMOVE AND INSTALL MOTOR
NOTE: This is a straight-forward job that requires a basic knowledge of electrical wiring. If you do not feel condent in
your ability to connect wires, have a qualied electrician change the motor for you.
  󰀨
2. Before removing the bottom pulley, measure the distance from the back side of the pulley to the side of the tank (Photo 6, Page
8). Record this measurement so you can replace the pulley at this same distance. This will help keep the belt alignment to
original specs.
3. Loosen two set screws on the pulley with a long 5/32” Hex/Allen wrench. These can be accessed through the two holes in the pulley.
Remove the pulley.
4. Disconnect the wiring from the motor by removing four screws and the rectangular cover from the motor electrical junction box.
5. Remove the plastic tape insulation from the wire connections. The Orange/Black/White group can remain connected.
6. Disconnect the green/yellow earth wire from the green earth screw in the junction box.
7. Disconnect 2 groups of wires and keep the screws and nuts used to secure the new connections. Make a wiring diagram to
show how the wires are connected.
8. With the power wires and earth wire disconnected from the motor, the power cable can be disconnected from the junction box.
9. The four bolts holding the motor to the machine can now be loosened.
10. The motor itself weighs about 40 lbs (18 kg). Use a small jack, a small stack of wood shims or have a helper hold the motor up
while the bolts are loosened. Slowly pull the motor from the machine.
11. Align the new motor with the bolts. Tighten the bolts from inside the tank.
12. The new motor will need to have ring lugs installed on all wires. If you are not comfortable doing this part of the operation, have

13. Install solderless ring terminals (lugs) on the motor wires, reconnect the power cord to the junction box, and connect the power
cord wires as they were previously installed with screws and nuts (see step #7 above). Tape all connections securely with
electrical tape.
14. Reconnect the earth wire and replace the junction box cover. Plug in and Unlock the power and check for motor operation. The
motor should turn counterclockwise as viewed from the shaft end in the tank.
  
  
  
16. Turn the belt through two complete rotations by hand and check the alignment. Adjust as needed to make the belt track straight
on all three wheels.
4.5 Remove and Replace Sanding Belt, Upper and Lower Pulleys
Sanding Belt
With the belt door on the right side of the machine open, firmly pull down on the black tensioner handle. This will allow the belt to
be removed from the top pulley and then from the lower pulley. Belt installation is just as simple. Hold the belt with one hand,
gripping the middle, and loop the bottom of the belt around the lower pulley. Make sure that the belt is not between the water
spray tube and the tank side. Slide one side of the belt over the platen and pull down on the tensioner handle. This will allow you
to put the top of the belt over the top pulley. Check that the spray tube is not hooked on the belt and pull the belt through two
complete rotations to check the tracking.
Lower Pulley
Before removing the lower pulley, measure and record the distance from the back edge of the pulley (closest to the motor) to
the side of the tank, as shown in Photo 3 on Page 8. The Lower Pulley is removed by first removing the sanding belt and then
removing two set screws, accessed through two holes in the pulley, with a 5/32” Hex/Allen wrench (Photo 4, Page 8).
Upper Pulley
The Upper Pulley is mounted on a shaft with two sealed bearings and lock rings. It is recommended that the pulley, shaft, and
bearings be replaced as a unit. Loosen the two square head screws on the pulley shaft support on the tensioner (Photo 2, Page
8). Slide the shaft out toward the pulley. Lightly coat the new shaft with grease and insert the new shaft and pulley into the
support with the end of the shaft protruding about 1/16" past the end of the support. (Photo 2, Page 8) Tighten the square head
screws. On older machines you may need a wood or plastic hammer to tap the shaft out. Do not hit the pulley itself with
anything.

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
4.6 Upper Pulley Shaft Assembly
UPPER PULLEY, SHAFT AND BEARINGS
For ease of maintenance and durability, the Top Pulley Assembly is supplied as a one-piece assembly. Replacing the
bearings or shaft alone requires a press and an experienced operator. Because the top crowned pulley itself, and the bearings are
some of the few parts of the BM64B that may need replacement, they are sold as unit assemblies.
These assemblies can be replaced quickly with simple hand tools by following the instructions on Page 7 of this manual.
Assistance with any maintenance operation on the BM64B is avaliable by calling the C.R. Laurence at [phone].
5.0 REFERENCE PHOTOS
5.1 Photos To Illustrate Maintenance Operations
8
Photo 1.
the spray tube "M". The Spray tube can be
adjusted by loosening the set screw "K".
Photo 2. 2 Square Head Screws "C"
holding the Upper Pulley Shaft "J".
Loosen these to remove the Upper Pulley
Assembly.
Photo 3. Measure Pulley to tank distance
"D" before removing Lower Pulley.
Photo 4. Loosen two set screws on the
Lower Pulley with a 5/32" Hex/Allen
wrench. Holes in the Pulley "E" line up
with the two set screws.
Photo 5. Vertical frame member "N" is
󰀨

water.

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
6.0 REPLACEMENT PARTS FOR THE BM64B
9

CRL 64” BELT SANDER
MODEL BM64B FOR 102 x 1625mm SANDING BELTS
crlaurence.com●Toll Free [phone] ●Fax [phone]
CALL TOLL FREE ANYWHERE IN THE U.S. AND CANADA ●ALL PRODUCTS F.O.B. NEAREST WAREHOUSE
6.1 Replacement Parts for the BM64B
BILL OF MATERIAL
ITM QTY PART NUMBER DESCRIPTION
1 39933001 FRAME, WELDMENT
2 1 330013 TENSIONER ASSEMBLY
3 1 330007 ADJUSTMENT KNOB
4 1 330014 TENSIONER MOUNTING KIT
5 1 2200110VMTR MOTOR, 1 HP, 110V
6 1 39932700 TANK, BM64
7 1 BM64SS EYSHIELD
8 1 330012 TENSIONER, GAS CYLINDER
9 2 45025760 M6 x 45mm SOCKET HEAD CAP SCREW, B/0
10 2 46902061 SPACER, 1/2 OD x 1/4 ID x 15/16, ZIP BRASS
11 1 2622028 LOWER PULLEY
12 1 330011 UPPER PULLEY ASSEMBLY
13 1 46104650 PHENOLIC TWO ARM THREADED KNOB
14 1 39912600 OVERSPRAY GUARD
15 1 46104660 14 LB PULL MAGNET, ADHESIVE BACKED
16 4.83 23600590 CONDUIT, LIQUID TIGHT, 3/8" PVC, BLACK
17 2 15018480 SCREW, ROUND HEAD, 10-24 x 1/2, ZIP
18 1 15000260 HEX HEAD CAP SCREW, 5/16-18 x 1/2, ZIP
19 4 15000560 HEX HEAD CAP SCREW, 3/8-16 x 1.25, ZIP
20 4 15113950 WASHER, 3/8, ZIP
21 4 15110371 LOCK WASHER, 3/8, ZIP
22 3 41423210 TERM FORK, 18-14 GA 10 STD INSULATED
23 1 39933100 TUBE, SPRAY
24 8 41422540 TERM RING, 14-16 GA, 10 STD INSULATED
25 2 45100053 HEX NUT, 10-24, BRASS
26 2 15018443 SCREW, RH SLOTTED, 10-24 x 1/4, BRASS
27 1 39951004 LABEL, SERIAL NUMBER
28 15 23402710 CONDUCTOR COP, #14 AWG, BLUE, STRAND
29 15 23402740 CONDUCTOR, COP, #14 AWG, BROWN, STRAND
30 15 23402691 CONDUCTOR, COP, #14 AWG, GRN/YEL, STRAND
31 1 37965400 CAUTION PLATE (LEGISIGN)
32 1 42700140 MEDIUM CRL LABEL
33 1 42187361 VALVE, COCK, 1/4 NPT MALE/FEMALE, BRASS
34 2 42101880 ADAPTER, 1/4 NPT PUSH CONNECT, BRASS
35 1 12100250 ADAPTER, 1/4 NPT TO 1/4 COMPRESSION
36 1 12028611 COUPLING, 1/4, GALV
37 7.5 53001677 TUBING 1/4 ID x 3/8 OD VINYL
38 1 41401120 
39 1 39955000 PLATEN, 3M, FLAT
40 1 30099600 FRONT PLATEN PLATE
41 4 15000012 HHCS, 1/4-20 x .50, SS
42 5 45113732 WASHER, FLAT 1/4 SAE, SS
43 1 11428010 CORD, PLUG SET
44 1 11401670 CORD GRIP, .31 TO .44, CORD, 1/2
45 1 41420280 TOGGLE SWITCH, DPST 20A
46 1 36957501 JUNCTION BOX
47 1 37028601 ELECTRICAL CONTROL BOX COVER
48 1 39956000 HOLDER, SPRAY TUBE
49 1 44900320 CAP FOR TAPED TUBE (449-0031-0) 33" x 26" x 4"
50 5 44900310 CARTON FOR BELT MACHINES 33" x 26" x 73"
51 1 41400550 CONNECTOR, CONDUIT, 3/8 STRAIGHT
52 1 15000052 HHCS, 1/4-20 x 1" LG ST STL
53 2 45104310 NUT, ESNA THIN 10-24 ZIP
54 2 45113450 WASHER, FLAT #10 ZIP
55 2 11403450 LOCKNUT, CONDUIT 1/2
33 34 51
38 16
2 3
4
*44130570 BEARING,not listed at right or numbered
on drawing on page 9
This Bearing is offered so that you can rebuild your Upper Pulley.

Motors and Power Cord Sets for US (BM64B) and Australia (AUBM64B) Versions
2200220VMTR
2200110VMTR
CAT. NO. DESCRIPTION
2200110VMTR 1/60Hz 115 Volt 1 HP Motor
2200220VMTR (for AU22) 1/50Hz 230 Volt 1 HP Motor
CAT. NO. DESCRIPTION
11428010 115 Volt Cord Set
41427110 (for AU22) 230 Volt Cord Set
10