Furuno FR-1500 MARK-3 Series Installation Manual page 12

Assembling the scanner unit
The scanner unit consists of the scanner radiator and the scanner unit chassis,
and they are packed separately. Fasten the scanner radiator to the scanner unit
chassis as follows:
1. For the XN20AF, XN24AF, attach two guide pins to the underside of the scan-
ner radiator.
2. Remove the waveguide cap from the radiator bracket. The cap may be dis-
carded.
3. Coat the waveguide flange with anticorrosive sealant as shown in Figure 1-2.
Hole for
a guide pin
Figure 1-2 Coating the waveguide flange with anticorrosive sealant
4. Coat fixing holes for the scanner radiator with anticorrosive sealant.
5. Grease the O-ring and set it to the O-ring groove of the radiator flange.
6. Set the scanner radiator to the radiator bracket.
7. For the XN20AF, XN24AF, coat hex bolts (M8 x 40, slotted washerhead, 8 pcs.)
with anticorrosive sealant and use them to loosely fasten the scanner radiator
to the scanner unit chassis. For the XN12AF, coat hex bolts, flat washers and
spring washers with anticorrosive sealant and use them to loosely fasten the
scanner radiator to the scanner unit chassis.
8. Remove two guide pins (inserted at step 1), and then tighten fixing bolts.
1-2
O-ring
10 mm
5 mm
CAUTION
Be sure to remove the guide pins.
Injury may result if the guide pins loosen
and fall.
Anticorrosive sealant
Hole for
a guide pin