5. MAINTENANCE & TROUBLESHOOTING

This chapter tells you how to keep your radar in good working order. Before reviewing this chapter please read the safety information which follows.

DANGER

Turn off the power before performing any maintenance or troubleshooting procedure.

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

Table 5-1 Recommended maintenance program

Period

Item

Check point

Remarks

 

 

 

 

3 to 6

Exposed

Check for corroded or loosened

Sealing compound may be used

months

nuts and

nuts and bolts. If necessary,

instead of paint. Apply a small

 

bolts on

clean and repaint them thickly.

amount of grease between nuts

 

antenna unit

Replace them if heavily

and bolts for easy removal in

 

 

corroded.

future.

 

 

 

 

 

Antenna

Check for dirt and cracks on

Do not use plastic solvent

 

radiator

radiator surface. Thick dirt should

(acetone) for cleaning. If you

 

(1932/1942)

be wiped off with soft cloth

need to remove ice from antenna

 

 

dampened with fresh water. If a

unit, use a wooden hammer or

 

 

crack is found, apply a slight

plastic head hammer. Crack on

 

 

amount of sealing compound or

the unit may cause water

 

 

adhesive as a temporary

ingress, causing serious

 

 

remedy, then call for repair.

damages to internal circuits.

 

 

 

 

 

Radome

Check for wear. Permanent

If a crack is found it should be

 

cover

damage to the antenna's internal

temporarily repaired by using a

 

(1832)

circuitry will result if water leaks

small amount of sealing

 

 

into the radome.

compound or adhesive. You

 

 

 

should then contact your dealer

 

 

 

for service.

 

 

 

 

6 months

Display unit

Check for tight connection and

If corroded, contact your dealer

to 1 year

connectors

corrosion.

for replacement.

 

 

 

 

22

Page 36
Image 36
Furuno 1942, 1932, 1832 manual Maintenance & Troubleshooting