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MAINTENANCE
GENERAL
Satisfactory operation of the radar depends in large measure on periodic maintenance as
outlined below.
CAUTION
DISCONNECT POWER BEFORE PERFORMJNG
ANY MAINTENANCE PROCEDURES.
1) Keep the equipment as frce as possible from dirt, dust and water splashes.
2) Inspect whether the screws securing the components are properly tightened.
3) Inspect the connection at the rear panel.
SCANNER UNIT
Radome
Wipe the surface of the radome with a clean soft cloth. Check that there is no dirt or
caked salt on the surface. A heavy deposit of dirt or caked salt on the painted surface of
the upper radome will cause a considerable drop in radar performance.
Do not use
Chemical cleaners except for alcohol. Check for cracks or deterioration of the rubber
packing and replace it if necessary. Do not paint the surface of the radome.
Mounting
Check that the radome base and the radome cover fixing bolis are secured tightly.
DISPLAY UNIT
Cleaning the screen
The face of the cathode-ray tube will, in time, accuiiiulate a coating of dust which tendS tO
dim the picture.
Clean
lightiy with
a
soft cloth (flannel or cotton), moistened with alcohol or
cleaning fluid
if desired. Do not use excess pressure; you may scratch the surface.
Fuse reolacement
To protect the equipment from serious damage, a lOA (for l2Vdc mains) or 5A (for
24/32Vdc mains) fuse is provided on the rear panel.
The fuse protects against
overvoltage/reverse polarity of the ship's mains or interaal fault of the equipment. If the
fuse has blown, first find the problem before replacing it with a new one. A fuse rated for
more than lOA or 5A must not be used, since it may cause serious damage to the
equipment. OVER FUSING WILL VOID WARKANTY.
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