JRC JMR-5482-S - Maintenance on each Unit; Radar Antenna NKE-1130;1632;2632;2103;2255

Section 15 Maintenance & Inspection 15-8
15.3 Maintenance on Each Unit
15.3.1 Radar antenna NKE-1130/1632/2632/2103/2255
When turning off the power sup
ply, do not hold down the power button of the
operation unit.
Otherwise, a trouble may occur due to termination failure.
Never directly touch the internal components of the radar antenna or indicator. Direct
contact with these high-voltage components
may cause electric shock. For
maintenance, inspection, or adjustment of equipment components, consult with our
branch office, branch shop, sales office, or our distributor in your district.
Do not get close to the radiant section of the radar antenna.
It is a rotating part, and it may cause injuries if it suddenly starts rotating and
consequently hits the body. T
he radiant section be installed at a high place such as
on the roof of the wheelhouse, on the flying bridg
e, on the trestle, or on the radar
mast so that no one can get close to it.
Microwave radiation level of the radar antenna
Keep away from the radar antenna during transmission.
Microwaves are generated from the front centre
of the radiant section of the radar
antenna at the levels indicate
d in the table below. Exposure to microwaves at close
range can result in injury (especially damage to eyes).
System
50 W/m
2
20 W/m
2
2.5 W/m
2
NKE-2103
n/a
26cm
123cm
NKE-2255
5cm
81cm
162cm
NKE-1130
11cm
76cm
181cm
NKE-2632
1.4cm
3.1cm
209.8cm
NKE-1632
1.5cm
3.3cm
128.4cm
Make sure to install the radar antenna at a place higher than human height.
Direct exposure to electromagnetic wave at close range will have adverse effects on
the human body.
When it is necessary to get close to the radar antenna for maintenance or inspection
purposes, make sure to turn the power switch of the display unit to "OFF" or "STBY".
Direct exposure to electromagnetic waves at close range will have adverse effects on
the human body.
When conducting mainten
ance work, make sure to turn off the power so that the
power supply to the equipment is completely cut off.
Some equipment components can carry electrical current even after the power switch
is turned off, and conducting maintenance work may result in elec
tric shock,
equipment failure, or accidents.
After the maintenance work, turn the safety switch to stop the radar antenna to "ON".