Koden MDC-7006, Installation Manual

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Chapter 6 Maintenance MDC-7000/7900 Series
6-2 0092669002-07
6.2 Regular service and cleaning up
Periodic inspection and cleaning is essential to keep the radar system in the good working order for the
life of the radar.
6.2.1 Monthly inspection
(1) Check whether there is any dirt or soot on the radiating part of the Antenna unit. If any, wipe it with
soft cloth soaked in water or soap detergent. Also make sure no cracks or coating material is on the
front radiation part of Antenna unit.
(2) Wipe the radar display with cloth soaked in static electricity inhibitor if dirty. Avoid using a dry cloth
since it will generate static electricity resulting in the accumulation of dust.
6.2.2 Annual inspection
Inspect the Antenna motor brushes in the Scanner unit every 2,000 operating hours. Replace with a
new brush if the brush length is less than 6 mm.
(1) Remove the cover at the forward side of the Antenna unit by unscrewing the mounting screw.
The Antenna drive motor is located inside the lower side of the housing.
(2) Remove the old motor brush using the slotted screwdriver. (Refer to Figure 6.2).
(3) Fit the screw to the slot and rotate slowly to counterclockwise. Both of the brushes should be
changed simultaneously.
(4) Insert new brushes and rig them with a reverse sequence.
Never turn on the power of radar system under inspection.
Figure 6.1 instructions for changing the motor brushes
About 6 mm
Contact face
Motor brush