This issue is that the chopper motor was not phased correctly. Please follow the instructions in the manual and rephase the motor and the analyzer should be fine.
Gary is the Manager for the Multiwave Photometer, Reid Vapor Pressure Analyzer and Dynamic Reflux Sampler. He recied a BS in Chemistry from Fairmont State Unitversity. He joined ABB in 1989 as an Application Engineer for the Multiwave Phtometer and later moved into product management.
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