General Binding SureBind 230VAC Service Manual page 19

5.5 MECHANICAL OPERATION
5.5.3 PUNCH TIMING OPERATION - Figure 5-7
The Punch Timing i s controlled by the Punch Timing Switch (S-8)(1), and the Punch
Cam (2). The size of the Punch Cam (2) is such that the Lobe (3) rotates once for each
punch cycle. The Punch Timing Switch (1) is mounted to the left hand side plate and is
operated by its Actuator (4).
When the punch cycle is activated by closing the Manual Punch Switch (S-7), or Auto
Punch Switch (S-4), the Punch Shaft (3, Figure 5-5) rotates the Punch Cam (2). The
Lobe (3) on the Cam (2) will move away from the Switch Actuator (4), closing Punch
Timing Switch (1). This provides a secondary circuit holding on the Punch Motor (1,
Figure 5-5). The Punch Motor (1, Figure 5-5) will cycle until the Lobe (3) on the Punch
Cam (2) rotates around and contacts the Punch Timing Switch Actuator (4). When this
occurs, the Punch Motor (1, Figure 5-5) stops immediately.
5.0 TROUBLESHOOTING
Figure 5-7
5-7
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