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4.2 Preventative Maintenance
Regular maintenance is important for good performance. 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 estab- lished and should at least include the items listed in Table
4.3 Replacing the Fuse
The 5A fuse in the power cable protects the equipment against reverse polarity of ship’s mains, overcurrent, and equipment fault. If the fuse blows, find the cause before replac- ing it. Never use a fuse rated for more than
Table 4-1 Recommended maintenance program
Period | Item | Check point | Remarks |
|
|
|
|
3 to 6 | Fixing bolts | Check for tightness and | Replace corroded bolts. Coat |
months | for antenna | corrosion. | bolts with |
| unit |
|
|
|
|
|
|
| Radome | Foreign material on the radome | The only recommended cleaning |
| cleanliness | face will cause a considerable | agent is alcohol. Do not use |
|
| drop in performance. Clean the | other cleaning agents; they can |
|
| radome with a freshwater. | remove paint and markings. |
|
|
|
|
| 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 |
|
| circuitry will result if water leaks | small amount of sealing |
|
| into the radome. | compound or adhesive. You |
|
|
| should then contact your dealer |
|
|
| for service. |
|
|
|
|
| LCD | The LCD will, in time, | Do not use chemical cleaners to |
|
| accumulate a coating of dust | clean any part of the display unit; |
|
| which tends to dim the picture. | they can remove paint and |
|
| Wipe LCD lightly with a soft | markings. |
|
| cloth. |
|
|
|
|
|
6 months | Display unit | Check for tight connection and | If corroded, contact your dealer |
to 1 year | connectors | corrosion. | for replacement. |
|
|
|
|
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