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10

the stop bracket.

4. Place a machinist's square against the table and

belt or platen.

5. If adjustment is required, turn the adjusting screw

(Figure 20) until the table is exactly square to the platen.

6. Check

the pointer. If it is not on 0

o

, loosen the

pointer screw and adjust the pointer until it is on 0

o

.

7. Tighten the pointer screw.

8. Loosen the table lock handle and tilt the table until its

stop contacts the 45

o

stop position.

9. Using a machinist's protractor set on 135

o

(90

o

+

45

o

) adjust the screw until the table and platen are in

correct adjustment. DO NOT reset the pointer after this

operation.

Figure 19: Using an adjustable square to check and

set miter slot parallelism on the belt table.

Figure 20: Location of adjustment (socket head) screws

and pointer attachment screw for table angle

adjustment.

Figure 21: Locations of stop lugs and stop bracket for zero

and 45

o

table positions.

Adjusting or Replacing the Platen

1. Disconnect the electrical power to the machine to

prevent accidental start-ups.

2. Remove the top cover, side guard and belt as outlined

in

Belt Replacement

.

3. Remove the table by unscrewing the locking handling

and lifting the complete table assembly, from the machine.

4. If you are replacing the platen, remove the three screws

that hold it to its mount -- then install the new platen and

replace the mounting screws finger tight.

5. If you are only adjusting the platen, loosen the three

mounting screws to allow adjustment.

6. Using a straight edge as shown in Figure 22, adjust the

platen height until it is 1/32 inch higher than the crown of

both the drive and idler drums.

7. Tighten the platen adjustment screws.

8. Reinstall the table and belt.

9. Check and adjust, if necessary, the tracking of the belt

according to instructions in

Belt replacement

.

10. Reinstall the guards and covers.

11. Check and adjust the table angles and miter slot

squareness, according to table adjustment instructions in

this manual.

12. Reconnect the electrical power to the machine.

Figure 22: Method for adjusting height of platen above

drive and idler drums.

Electrical

Caution:

The sanders are available in a wide variety of

electrical configurations to meet the needs of the

purchaser with respect to power available and compliance

with electrical codes. Each machine is tested at the

factory for operation before shipment and the power cord

is tagged with the power requirements for the machine, as

shipped.

HOWEVER, before attempting any electrical

hookup, you should be certain:

1. The electrical characteristics of the service branch

match the requirements of the motor.

2. The service branch is equipped with wires of the

required gauge or size.

3. The branch circuit intended for the machine is protected

with a time delay fuse or circuit breaker with a rated

amperage just slightly greater than the full load current of

the motor.

CAUTION:

All electrical service work on your

Wilton sander should be performed by a qualified,

licensed electrician who is familiar with all safe standard

electrical installation practices and all applicable electrical

Summary of Contents for BTM250

Page 1: ...Belt Disk Sander Model BTM250 Operation manual Table of Contents ...

Page 2: ...2 Cover Page 1 Table of Contents 2 General Specifications 3 Warnings 3 Operating Instructions 4 Maintenance 6 Setup and Installation 8 Wiring Diagrams 10 Troubleshooting 13 Replacement Parts 14 ...

Page 3: ...ll labels affixed to the machine Failure in following all of these warnings can cause serious injuries General Machinery Warnings 1 Always wear protective eye wear when operating machinery Eye wear shall be impact resistant protective safety glasses with side shields which comply with ANSI Z87 1 specifications Use of eye wear which does not comply with ANSI Z87 1 specifications could result in sev...

Page 4: ...oes 3 A dust collection system is recommended The operator should also wear a dust mask at all times 4 Additional precautions may be necessary for sanding materials which are flammable or have other hazardous properties You should always consult the manufacturer of such materials for instructions on sanding and handling 5 Do not force or jam the workpiece into the sanding disc 6 Before sanding alw...

Page 5: ...mit quick adjustment to the vertical or horizontal positions To Adjust to Vertical 1 Unlock both of the lock bolts These are located under the arbor cover 2 Move the arm to vertical until it contacts its stop 3 Tighten both of the lock bolts and replace arbor cover To Adjust to Horizontal 1 Unlock both of the lock bolts 2 Move the arm to horizontal until it contacts its stop See Figure 3 3 Tighten...

Page 6: ...t 7 Check the height of the platen with a straight edge If it is not 1 32 in above the drums adjust it according to the instructions in Platen Replacement or Adjustment in the Machine Setup section of this manual 8 Check the drums for looseness which might cause tracking problems Correct any loose condition by tightening or replacing any parts as required 9 Slip the new belt onto the drums and pla...

Page 7: ...s 1 Disconnect the power to the machine to prevent accidental start ups 2 Peel off the old abrasive disc 3 Clean the drive disc surface using naptha or a similar nonflammable solvent that will dry film free 4 Pull the protective backing half off the new abrasive disc 5 Position the new disc carefully so it is centered accurately on the drive disc See Figure 8 6 When accurately centered remove the ...

Page 8: ... motor pulley set screw and sliding the pulley into alignment or by moving the arbor pulley slightly on its shaft See Figure 14 18 When the pulleys are accurately aligned reinstall the belt guard 19 Reestablish electrical power to the machine Machine Setup Basic Setup 1 Position the machine where it will be located on the shop floor When positioning the machine consider the type of work which will...

Page 9: ...to adjust miter groove parallelism Disc Table Gap Adjustment 1 Using a scale check the gap between the edge of the table and the face of the disc It should be very close to 3 32 inch If it is much more or less than that distance adjust it as follows 2 Disconnect the electrical power to the machine 3 Using the access hole on the top of the disc guard locate and loosen the two set screws that secure...

Page 10: ...ws to allow adjustment 6 Using a straight edge as shown in Figure 22 adjust the platen height until it is 1 32 inch higher than the crown of both the drive and idler drums 7 Tighten the platen adjustment screws 8 Reinstall the table and belt 9 Check and adjust if necessary the tracking of the belt according to instructions in Belt replacement 10 Reinstall the guards and covers 11 Check and adjust ...

Page 11: ...E POWER WHEN THE MACHINE IS USED IN A COMMERCIAL OR INDUSTRIAL ESTABLISHMENT In these cases you must connect your machine to the service branch using a hardwired junction box connection Motor Rotation The motor should be turning counterclockwise the belt sander should be moving downward and the disc sander should be turning clockwise These motors are wired at the factory for correct rotation Volta...

Page 12: ...he power to the machine 4 Turn the machine on The motor should now be turning in the correct direction Voltage Conversion Three phase machines are pre wired for 230V or 460V per customer request If it becomes necessary to change the voltage remove the back cover from the base and place the machine on its side Remove the terminal cover from the motor Rewire the motor according to the motor connecti...

Page 13: ...Tracking is out of adjustment 2 Too much belt tension 3 Not enough belt tension 4 Belt is jointed improperly 5 Lack of crown on the drive roller 6 Worn bearings 1 Adjust the belt tracking 2 Loosen the tension until the belt is just taut 3 Tighten the tension until the belt is more taut 4 Check the belt for an irregular seam or shape 5 Remove the belt and put a straight edge along the drive roller ...

Page 14: ...14 ...

Page 15: ...bolt M8X50 4 44 key 5x5x75 1 14 flat washer 10 3 45 spring ring17 for shaft 2 15 hex bolt M10X25 3 46 bearing 2 16 belt cover 1 47 supporting stand 1 17 connecting shaft 1 48 spring ring for shaft 17 1 18 fixed seat 1 49 belt wheel 2 1 19 flat washer 6 2 50 hex bolt M10x40 2 20 hex bolt M6X20 2 51 flat wahsr 10 2 21 hex bolt M8X20 1 52 swivel stand 1 22 belt wheel 3 1 53 spring ring for shaft 17 4...

Page 16: ... knob 1 100 flat wahsr 5 8 71 phillips head screw M5x6 1 101 guard cover 1 72 pointer 1 102 phillips head screw M5x6 2 73 sliding pole 1 103 flat washer 5 2 74 supporting body 1 75 adjusting handle sleeve 1 76 adjusting handle 1 77 flat washer 2 78 hex nut M8 2 79 adjusting shaft 1 80 hex bolt 1 81 knob 1 82 flat washer 2 83 small pressing spring 1 84 hex nut M6 1 85 nut M6 1 86 washer 1 87 adjust...

Page 17: ...17 ...

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