Incorrect- BladesClampedAtAngle
Incorrect - Blades Not Ground Square
Incorrect - Blades Overlap
Correct - Grind Blades Square and Clamp Straight
Correct - Clamp Blades Flat with no Overlap
Figure 10 - Blade Mounting and Clamping
TOOTH SPACING
Refer to Figure 11.
•Approximately 1/8"of blade will be consumed during the welding process. This blade loss must be taken into account.
•All blades must have some of the teeth ground off so that the tooth spacing will be uniform after welding.
% Tooth | _ | - % Tooth | 3. _ |
| _ | _ | - 3/4Tooth | |
|
|
|
| /4 Ioottl | 7_1"t'j |
| ||
|
|
|
| 12TPI | _ |
|
|
|
3/8Tooth | - _ | - | 3/8Tooth | 3/4Tooth | - _ |
| = 3/4Tooth | |
6TP,_ | _ |
|
| ,6TP, | __ |
|
|
|
% Tooth | = _ | - | _/2Tooth |
|
|
|
| 1% Tooth |
|
|
|
| 1%Tooth__- |
| |||
8TP, __ |
|
| 20TP,_ |
|
| _ |
| |
Figure 11 - Tooth Spacing (TPI = Teeth per Inch)
•Tooth grinding procedure must be done carefully in order to grind the proper number of teeth and not to grind below gullet which would weaken the blade.
BLADE WELDING
Refer to Figures 7 and 12.
•To set weld pressure adjustment knob, turn the knob counterclockwise to increase the pressure. The pres- sure adjustment knob controls force applied to the movable jaw.
NOTE: Weld pressure adjustment knob must be reset to "0" after each welding.
•Wider blades and thicker blades need more weld pressure to force the blade ends together during welding. If too little pressure is applied, the blade ends will melt. Too much pressure may cause the blades to overlap.
For example, for 1/2"wide blades, turn the pressure adjustment knob counterclockwise until the pointer is at 6 (See Figure 12).
5
4
3
2
1
Figure 12 - Weld Pressure Adjustment
•If blade melts, increase pressure. If there are "blow holes" in the weld, increase pressure.
•If blade overlaps, decrease pressure.
•Wider blades need more pressure and thinner blades need less pressure. Weld pressure is also affected by blade material.
WARNING: Welding operation produces sparks at blade intersection. Step away to left side of welder during welding operation.
WARNING: Always wear ANSI approved safety glasses during welding. Sparks from welder can cause serious injury to eyes.
•Press weld button and hold down. The blade ends will become red hot and soft. The movable jaw will force the blade ends together creating a bead of metal and the limit switch will automatically cut power to jaws.
•Release weld button and wait 10 seconds to allow blade to cool.
•Reset weld pressure adjustment to "0".
10