Navico 2kW, Installation Manual

Page: 68 / 80

66 | Maintenance
Before doing any maintenance work, always ensure that the radar system is turned
OFF at the main power source.
If a rectifier unit is used, turn OFF the power supply to this too. Remember that high
voltages from the rectifier unit are always present, even if the radar is not operating,
and these can cause severe injury or death.
9.1 General maintenance
Proper maintenance of the radar system will keep it in good condition and minimize
breakdowns. Periodically:
• remove any dust, dirt or sea salt from the external surfaces with a dry, lint-free cloth.
• check that the radar components are held securely in place and that the screws, nuts and
bolts have not worked loose. Tighten and re-apply marine paint where necessary to
prevent corrosion.
•
check that all the radar cabling is not frayed, bent, or cut and that the radar system cable
connections are secure, tight and waterproof.
9.2 Scanner maintenance
Note: Before working on the scanner, remove your watch and any magnetic cards, because the
modulator circuit in the magnetron emits a strong magnetic field that can badly affect such
items
• Remove any dust, dirt, or sea salt from the external surfaces, particularly the front side of
the scanner, with a lint-free cloth dampened with water. Do NOT use petrol, gasoline,
benzene, thinner, or similar solvent to dampen the cloth as these cause deterioration of the
external surfaces.
•
At least once every six months, apply grease (Mobilux 2 or equivalent) evenly to the
lubricating gears, with a brush or knife. More frequent application is desirable to maximize
the life of the lubricating gears.
•
Open scanners only: The drive motor brush has an expected life of 2,000 hours. Replace it
when half of the overall length has worn away. The drive motor carbon brush can be
removed easily by unclipping the two caps located on both sides of the bottom part of the
drive motor.
•
Open scanners only: Clean any carbon powder off the drive motor commuter with a dry
brush or, if this will not remove it, use sand paper #250 to #400.
9.3 Other maintenance items
Re-set the heading calibration annually and after any major structural changes to the vessel.
9 Maintenance