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GROUNDING THE CONTROLLER
Make sure the controller is grounded! The ground lug locations are different for different con-
trollers—the locations of the lugs for each type of controller are shown in the photos below.
To ground the controller, remove the yellow cap on the lug and take off the first nut and star
washer. Attach a ring lug to the grounding wire and secure it to the ground lug by placing the
ring lug, then star washer, then screwing the nut back on. Tighten with a wrench or socket. The
other end of the wire should connect to any suitable ground point, typically a ground bus bar
used for station ground.
Figure 9.04: Lug location for SDA100, OptimizIR, and OptimizIR 2.0 (early models)
Figure 9.05: Lug location for OptimizIR 2.0 (stainless steel chassis)
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