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This chapter tells you how to keep your radar
in good working order. Before reviewing this
chapter please read the safety information which
follows.
Turn off the power before
performing any maintenance or
troubleshooting procedure.
DANGER
Hazardous voltages can shock, burn or cause death.
Only qualified personnel totally famillier with electrical
circuits should work inside the units.
RF RADIATION HAZARD
The radar antenna emits high frequency
radio radiation which can be harmful,
particularly to your eyes.
Never look directly into the antenna from a distance of
less than two feet when the radar is in operation as
you could injure the cornea of your eyes. Always
make sure the radar is set to stand-by or is turned off
before starting work on the antenna unit.
5.1 Preventative Maintenance
Regular maintenance is important for good per-
formance. Always keep the equipment as free
as possible from dirt, dust, and water splashes.
Make sure all screws securing the components
are properly tightened.
A maintenance program should be established
and should at least include the items listed in
table 5-1.
5.2 Replacing the Fuse
The fuse in the power cable protects the equip-
ment against reverse polarity or ship’s mains,
overcurrent, and equipment fault. If the fuse
blows, find the cause before replacing it. Never
use an incorrect fuse – serious damage to equip-
ment may result and void the warranty.
12 V: 10 A fuse
24/32 V: 5 A fuse
Period Item Check point Remarks
3 to 6
months
Exposed
nuts and
bolts on
antenna unit
Check for corroded or loosened
nuts and bolts. If necessary,
clean and repaint them thickly.
Replace them if heavily
corroded.
Sealing compound may be used
instead of paint. Apply a small
amount of grease between nuts
and bolts for easy removal in
future.
Antenna
radiator
(1932/1942)
Check for dirt and cracks on
radiator surface. Thick dirt
should be wiped off with soft
cloth dampened with fresh
water. If a crack is found, apply a
slight amount of sealing
compound or adhesive as a
temporary remedy, then call for
Do not use plastic solvent
(acetone) for cleaning. If you
need to remove ice from
antenna unit, use a wooden
hammer or plastic head
hammer. Crack on the unit may
cause water ingress, causing
serious damages to internal
Radome
cover
(1832)
Check for wear. Permanent
damage to the antenna's internal
circuitry will result if water leaks
into the radome.
If a crack is found it should be
temporarily repaired by using a
small amount of sealing
compound or adhesive. You
should then contact your dealer
for service.
6 months
to 1 year
Display unit
connectors
Check for tight connection and
corrosion.
If corroded, contact your dealer
for replacement.
5. MAINTENANCE & TROUBLESHOOTING
Table 5-1 Recommended maintenance program