Furuno FAR-2827, FAR-2127-BB, FAR-2117-BB, FAR-2817 Assembling the antenna unit

1. MOUNTING

Assembling the antenna unit

The antenna unit consists of the antenna radiator and the antenna unit chassis, and they are packed separately. Fasten the antenna radiator to the antenna unit chassis as follows:

1.For the XN20AF, XN24AF, attach two guide pins to the underside of the antenna radiator.

2.Remove the waveguide cap from the radiator bracket. The cap may be discarded.

3.Coat the waveguide flange with anticorrosive sealant as shown below.

10 mm O-ring Waveguide cap

Hole for

a guide pin

5 mm

Hole for

a guide pin

Anticorrosive sealant

Coating the waveguide flange with anticorrosive sealant

4.Coat fixing holes for the antenna radiator with anticorrosive sealant.

5.Grease the O-ring and set it to the O-ring groove of the radiator flange.

6.Set the antenna radiator to the radiator bracket.

7.Coat hex bolts M8x40 (for XN-20AF or XN-24AF) or hex bolt M8x35/ flat washer/spring washer (for XN-12AF) with anticorrosive sealant and use them to loosely fasten the antenna radiator to the antenna unit chassis.

8.Remove two guide pins (inserted at step 1), and then tighten fixing bolts.

CAUTION

Be sure to remove the guide pins.

Injury may result if the guide pins loosen and fall.

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