GPD Global | https://www.gpd-global.com/pdf/doc/Dispense-System-Service-Guide-22290008G.pdf
Lubricate the linear rail grease fittings per LUBRICATE Ball Screws & Linear Rails (pg 5.77). X Optical limit switches Visually inspect optical limit switches.† They should be free of debris, securely mounted, and in good operating condition. Refer to TEST
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