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17

FIG. 36

FIG. 37

FIG. 38

FIG. 40

MAINTENANCE

BLADE REPLACEMENT
Blade Removal

1. 

Raise the Cutting Head and rotate the Lock Lever Counter-Clockwise 90° down 
to a horizontal position locking it in the UP position 

(FIGS 33 & 36)

.

2. 

Slide the Lower Blade Guard Clearance Panel upward and remove it 

(FIG 37)

.

3. 

Open the hinged Blade Guard by removing two Threaded Knobs and swinging it 
open 

(FIG 38)

4. 

If Blade is not broken, release tension on Blade by rotating the Blade Tensioning 
Knob Clockwise 

(FIG 39)

 so that the White Gauge Mark moves into the Yellow 

“LOW TENSION” block of the Band Dynamic Tension label 

(FIG 39)

.  

5. 

Slip the Blade off the Wheels and from between the Blade Support Rollers.

6. 

If Blade was previously broken in use, pull out the remnant of the broken Blade 
then rotate the Blade Tensioning Knob Clockwise 

(FIG 39)

 so that the White 

Gauge Mark moves into the Yellow “LOW TENSION” block of the Band Dynamic 
Tension label 

(FIG 39)

.

Blade Installation

1. 

Make sure that the Blade Tension Knob was adjusted so that White Gauge Mark 
was moved into the Yellow “LOW TENSION” block of the Band Dynamic Tension 
label 

(FIG 39)

.

2. 

Place new Blade over Wheels and between the Roller Guides with the cutting 
teeth set in the proper direction 

(FIG 40)

.

3. 

Push on side of Blade to test tension. Finger pressure should cause approximately 
0.004” deflection. Rotate Blade tension Knob until proper tension is achieved. For 
more precise measurement use a Blade tension gauge (not included). 

4. 

Close the hinged Blade Guard, secure with the two Threaded Knobs and slide the 
Lower Blade Guard Clearance Panel back down into place.

5. 

Plug the Saw in, and run with no load for several minutes, switch off and re-
check the Blade tension.

6. 

Re-adjust tension if necessary.

7. 

Follow Blade Break in procedure as described in this Manual.

FIG. 39

INJURY HAZARD! 

  Unplug the Bandsaw from the power supply before beginning ANY 

of the following adjustments!

Tension 

Gauge

Blade Teeth Installed 

To Move In This Direction

Summary of Contents for 21980

Page 1: ...7 X 12 HORIZONTAL VERTICAL METAL CUTTING BANDSAW INSTRUCTIONS Item 21980...

Page 2: ...nd the Moveable Material Fence adjusted out to maximum width 10 wide x 7 high NOTE The Fixed Fence may be relocated to provide an additional 2 1 2 of cut width refer to the Adjustments section of this...

Page 3: ...not expose power tools to rain or wet conditions Water entering a power tool will increase the risk of electric shock d Do not abuse the cord Never use the cord for carrying pulling or unplugging the...

Page 4: ...before using the Band Saw Keep these product instructions for future reference HEALTH AND INJURY HAZARDS Dust and fine particles are generated while cutting which can contain hazardous or toxic subst...

Page 5: ...e Saw Base onto the Wheels MATERIAL STOP FENCE G TO SAW BASE A Insert the Material Stop Fence Rod F into the hole at the front of the Saw Table casting and secure in place by tightening the mounting b...

Page 6: ...tant floor material due to the potential ejection of sparks while cutting Keep power cord away from and out from under the Metal Cutting Saw Blade The unit is equipped with a 6 2 1 9 m long grounded 1...

Page 7: ...eed Rate to Zero Back out the Knob one full turn to set the initial Feed Rate and adjust as necessary Rotate Clockwise to decrease Feed Rate Counter Clockwise to increase Feed Rate Always start with t...

Page 8: ...ug the Power Cord into the nearest 120 VAC grounded 20 Amp electrical outlet Be sure the power cord is away from the Saw Blade With one hand on the cast in handle of the Cutting Head and the other han...

Page 9: ...inder Feed Rate section on Page 7 of this manual 3 When the Saw has completed 1 3 of the cut increase Feed Rate slightly and allow the Saw to complete the cut 4 Keeping the same Hydraulic Cylinder Fee...

Page 10: ...er direction Loosen the socket head Lockscrew and rotate the Bearing Carrier so that the Blade is square to the Deck then retighten Lockscrew Repeat for opposite Bearing Carrier BLADE SUPPORT POSITION...

Page 11: ...Motor Plate FIG 21 4 Loosen the Locknut of the single Vertical Tension Locking Bolt FIG 21 5 Back off the two Longitudinal Bolts and the single Lockbolt until the Motor Plate can be moved inward and...

Page 12: ...the head of the Vertical Stop Bolt as needed Retighten locknut CUTTING HEAD HORIZONTAL STOP The Horizontal Stop FIG 26 is located adjacent to the Power ON OF Switch It is designed to stop the Cutting...

Page 13: ...ustment for some time After extended use the Blade will stretch somewhat and may require minor periodic tension adjustments The need for a tensioning adjustment will become known if the Blade exhibits...

Page 14: ...ade Tension Adjustment procedure in the Maintenance Section of this Manual If after Blade Replacement or Blade Tension Adjustment the Blade continues to run off the edge of the Blade Idler or Drive Wh...

Page 15: ...G 32 To move the Blade Tracking closer to Idler Wheel Shoulder Turn the Tracking Set Screw Clockwise To move the Blade Tracking closer to the Idler Wheel outer edge Turn the Tracking Set Screw Counter...

Page 16: ...Lower Blade Support and secure it with the two previously removed Phillips Head Screws FIG 35 EVALUATING CUTTING PERFORMANCE The best method to determine if the Saw is set up properly and the Blade is...

Page 17: ...the Yellow LOW TENSION block of the Band Dynamic Tension label FIG 39 Blade Installation 1 Make sure that the Blade Tension Knob was adjusted so that White Gauge Mark was moved into the Yellow LOW TEN...

Page 18: ...eration the worm gear drive will run hot Unless the temperature exceeds 200 degrees Fahrenheit there is no cause for alarm Spindle Bearing Plug Gear Box Plug PROBLEM CAUSE CORRECTION Does Not Run When...

Page 19: ...chinery s Handbook Inadequate feed rate Adjust cylinder dial setting as needed Improper tooth pitch for material Refer to Machinery s Handbook Hard spots or scale on material Scale Reduce speed and in...

Page 20: ...ce blade Poor weld on blade Replace blade or reweld blade Incorrect choice of blade Check Machinery s Handbook for recommended blade type Miter Cuts Are Not Accurate Improper setting of Material Clamp...

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