Furuno DRS4W Operator's Manual page 19

3. INSTALLATION
2. Construct a platform (steel or aluminum)
referring to the outline drawing and the
mounting template. Fasten the platform to
the mounting location. The holes in the
platform must be parallel with the fore and
aft line.
3. Put the radar sensor on the platform with
the bow mark ( ) on sensor aligned with
the bow.
4. Use hex bolts*, flat washers and spring
washers (removed at step 1) to fasten the
radar sensor to the platform. The torque
for the bolts must be 19.6 to 24.5 N•m.
*See the figure below to determine bolt
length to use.
L
Flat
washer
Spring
washer
Platform thickness and bolt to use
Platform
thickness
M10×20 (Supplied, prefastened to radome.)
5 mm or less
6 - 10 mm M10×25 (Supplied.)
Use bolt where the length of "L" above is
Over 10 mm
15 mm. Supply locally.
5. Connect the supplied power cable to the
sensor. Observe the guidelines for laying
the power cable shown on this page.
6. Connect the power cable to the power
source.
Sensor base assy.
Platform
Apply marine
sealant.
Hex bolt
(See below.)
Bolt to use
1: Red
2: Braid
3: Blue
Power cable
pin assignment
Guidelines for laying the power cable
• The connectors must not strike any part of
the vessel by wind, etc.
• The load applied to the connectors must
not be more than its own weight.
• If the cable is passed through a mast on a
sailboat, be sure the cable does not touch
ropes (sheet, halyard, etc.).
• Do not fasten the cable to the hull.
• The cable must be fixed so no tension is ap-
plied to the connectors. To prevent tension,
create a loop in the cable close to the sen-
sor and tie the loop with cable ties, as in the
figure below.
• Wrap the junction of the connectors with
self vulcanizing tape for waterproofing.
• Fasten the cable to the mast, etc. at the
neck of each connector with a cable tie.
13
Loop cable and tie
loop with cable ties.