Furuno FAR 3220, Installation Manual

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1. INSTALLATION
1-3
• For X-band radar, if it is
necessary to lay down the
radiator before you fasten
it to the antenna unit, lay it
down with the waveguide
up, to prevent damage to
the cylinder that sur-
rounds the waveguide.
• If the de-icer is installed, a two-pole breaker (supplied locally) must also be installed.
Note: For more information, please refer to IMO SN/Circ.271 "Guidelines for the in-
stallation of shipborne radar equipment.
1.1.2 FAR-3x10/3x20/3x20-NXT/3x20W Radars
How to assemble 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. Coat the hatched area shown in the figure in step 2 with the supplied adhesive.
2. Remove the protective waveguide cap from the waveguide on the radiator brack-
et.
3. Pass the supplied gaskets to six sets of the Antenna M8

50 fixing bolts w/two flat
washers, and then coat the threads of the Antenna fixing bolts with the supplied
adhesive. Set the radiator on the radiator bracket.
4. Fasten the antenna radiator with the two
bolts from the bottom (1 and 2 in the right
figure). The torque must be 15.0 N•m.
Note: If the bolts are not properly tightened,
it may be difficult to insert the bolts in the
next step.
Lay down radiator with
waveguide facing upward.
Waveguide
Cylinder
Do not apply the adhesive to
these locations. Remove this cap BEFORE
fastening the radiator.
Hacth: Adhesive
Radiator
bracket
Radiator
bracket
Fixing bolt
Flat washers
Gasket
Radiator bracket Radiator bracket
Coat with
adhesive
Set the radiator on the bracket.
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