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4. Pull the cables out of the PS227 port.
5. Loosen the locknut, and then remove the proximity switch.
6. Remove abrasive from the silo threads.
Failure to remove all abrasive will damage the threads of the silo
and the proximity switch
.
7. Install the new proximity switch. Turn the switch so that access to the adjustment
screw is easy. Tighten the locknut to hold the switch in position.
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