465.0 MAINTENANCENo periodic maintenance is required for the ECD Model T80 Transmitter.When you open the front cover and/or cable glands, make sure that the seals are clean and correctly fittedwhen the unit is re-assembled in order to maintain the housing’s NEMA 4X weatherproof integrity against waterand water vapor.Fuse: There is a circuit board mounted fuse protecting the instrument. If you suspect that this needs to bereplaced, contact the ECD service center for parts and instructions.5.1 CLEANINGThe Model T80 transmitter requires no periodic maintenance, except to make sure the front window is keptclean in order to permit a clear view of the display and allow proper operation of the navigation buttons. If thewindow becomes soiled, clean it using a soft damp cloth or soft tissue. To deal with more stubborn stains, aneutral detergent or spray cleaner like Windex may be used. Never use harsh chemicals or solvents.