Figure 1 Product overview1 CD500 controller 3 Electrical connections and fittings2 Display 4 Indicator lightsIndicator lightsThe indicator lights show sensor and controller conditions. Refer to Table 1.Table 1 Indicator light descriptionsLED Description(Flashing) The controller is in maintenance mode.The power supply for the sensor is on.The controller is in a measurement.The controller is in a cleaning cycle.InstallationD A N G E RMultiple hazards. Only qualified personnel must conduct the tasks described in this section of thedocument.Installation guidelines• Do not install the instrument in a location that receives direct exposure to sunlight, ultravioletradiation (UV), severe weather or next to a heat source.• Make sure that there is sufficient clearance around the instrument to make connections.• Install the instrument in an environmental enclosure or protective cover when installed outdoors.English 7