Universal Robots ur3 - Visual Inspection of Controller; Cleaning and Replacement of Filters

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2.1.2 Visual inspection of controller
 Disconnect power cable from controller
 Open cabinet door
 Check connectors are properly inserted on printed circuit boards
 Check for any dirt/dust inside of controller
 If any dirt/dust is present:
» Gently use a vacuum cleaner to remove particles
» Use a soft cloth. You can add: Water, Isopropyl alcohol, 10% Ethanol alcohol or 10% Naphtha
2.1.3 Cleaning and replacement of filters
 Controller box contains two filters, one on each side of controller
 Remove filters from controller box and clean them thoroughly using compressed air
o Replace filters if necessary
o Gently remove the outer plastic frame and maintain the filter