JRC JMR-9230-S Installation Manual page 97

2.Installation of Scanner Unit > 2.4 PRECAUTIONS
2) Installation procedures
a. Maintain a flat level surface on which to install the scanner.
•
Use sufficiently thick steel material and reinforcement material for the scanner's
installation surface (mount base) to reduce vibration and impact. Keep the mount
base flat and smooth.
•
If there is a partial gap between the mount base and the scanner chassis's legs, work
on the installation surface so that it becomes flat and smooth. If a gap exists and the
scanner is tightly clamped, the chassis will distort and become damaged by vibration.
b. Avoid using vibration-proof rubber and resin
•
Do not insert an elastic body, such as vibration-proof rubber or resin, between the
mount base and the scanner chassis' legs. If rubber or resin is inserted, the amplitude
of vibration increases, resulting in the possibility of damage to the scanner.
Furthermore, if installation bolts become loose due to deterioration of rubber or resin,
the scanner may be damaged or fall from its mount.
3) Installation and clamping method
a. Installation direction
•
Installation should be done so that the cable gland is oriented toward the stern.
b. Bolts, nuts and tightening torque to be used
•
Use stainless steel bolts for the scanner and uniformly tighten all of the bolts using
double nuts for each bolt so that the scanner will not become loose (Table 2-4 Length
of scanner mounting bolts and tightening torque).
•
Although the length of the bolt will differ according to the thickness of the mount base,
use a bolt long enough so that more than 4 millimeters of thread protrudes beyond the
double nuts after the double nuts have been tightened.
S-band
X-band
Table 2-4 Length of scanner mounting bolts and tightening torque
Thickness of
Base(mm)
19
12
Mount Bolt
M12×65(mm) SUS304
M10×55(mm) SUS304
2-34
Torque(N-m)
65
40