Extension Cords
If an extension cord is necessary, make sure the cord rating is suitable for the amperage listed on the machine's motor plate. An undersize cord will cause a drop in line voltage resulting in loss of power and overheating.
The chart in Figure 17 shows the correct size cord to use based on cord length and motor plate amp rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.
Adjustments
Drum Height Control
Drum height is controlled by the height adjustment handwheel. Rotating the handwheel counterclockwise lowers the drum; clockwise raises it.
One revolution of the handwheel moves the drum approximately 1/16”.
Switch Lockout
Unauthorized use of the sander can be prevented by pulling out the key (Figure 18). Press switch to OFF position before removing the key. When the key is removed, the drum can not be started. (Note, however, that the conveyor belt can still run when the key is removed).
To replace the key, slide it back into the switch until it snaps.
Depth Gauge
The depth gauge indicates the distance between the bottom of the sanding drum and the top of the conveyor surface. Adjustment is performed by “zeroing” the gauge.
1.Loosen screw (A, Figure 19) sufficiently to allow the pointer (B) to be turned to depth gauge scale.
2.With an abrasive strip on the drum, lower sanding drum to where it touches top of conveyor belt.
3.At this drum position, the depth gauge pointer (B) should align with the zero mark of the scale. If it does not, loosen screw (A) and raise or lower pointer to align with zero on the scale.
4.
Note: Depending on the desired accuracy, you may need to repeat this process when installing different abrasive grits.
Recommended Gauges (AWG) of Extension Cords
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Amps | 25 | 50 | 75 | 100 | 150 | 200 |
feet | feet | feet | feet | feet | feet | |
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< 5 | 16 | 16 | 16 | 14 | 12 | 12 |
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5 to 8 | 16 | 16 | 14 | 12 | 10 | NR |
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8 to 12 | 14 | 14 | 12 | 10 | NR | NR |
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12 to 15 | 12 | 12 | 10 | 10 | NR | NR |
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15 to 20 | 10 | 10 | 10 | NR | NR | NR |
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21 to 30 | 10 | NR | NR | NR | NR | NR |
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*based on limiting the line voltage drop to 5V at 150% of the rated amperes.
NR: Not Recommended.
Figure 17
Figure 18
Figure 19
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