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V. Removal and Replacement of Components
A. Gear Motor and Chain
1) Turn off the power supply.
2) Remove the front panel and left side panel.
3) Loosen the four bolts holding Gear Motor Bracket (B) and the adjusting bolt.
4) Remove the chain.
5) Loosen the socket set screw and remove the sprocket by using a gear puller.
6) Install a new gear motor.
NOTE: When removing the gear motor and gear head, take care to keep the grease.
7) Assemble the removed parts in the reverse order of the above procedure.
NOTE:
When weight (2.2 Ib) is applied to the chain at the center, the displacement must
be 0.31 to 0.51".
Lubricant (Class SAE 20) must be applied to the chain using a cloth.
8) Turn on the power supply.
B. Safety Switch
1) Turn off the power supply.
2) Remove the front panel.
3) Remove the safety switch cover.
4) Disconnect the connectors from the safety switch leads.
5) lnstall a new safety switch.
6) Assemble the removed parts in the reverse order of the above procedure.
7) Turn on the power supply.
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