Furuno WR110, Installation Manual

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4.1.1. Service space for maintenance ATU and JCU
For maintaining inside the ATU, use the maintenance tool to lift and secure the upper radome by
350 mm as described in section 4.2.5.
It is possible to replace almost all components of ATU except Rotary Joint (SP RJ-AZ Assy).
For replacing Rotary Joint, it has to remove the upper radome to bring it down to the working plane
first. Then remove the antenna assembly and bring it down to the working plane either.
Service space is necessary also for JCU (a door should be fully opened), in order to be able to
replacing every parts in JCU.
4.1.2. Standard radar stand
The radar stand needs a structure as shown in Table A according to its height.
The height instead of the scaffold is as shown in Figure 4.2 from the work plane where the service
engineer can work to the top surface of the scaffold excluding the lifting tool of the ATU attachment
portion.
○： Necessary, ●： Unnecessary
4.1.3. Installation and Dimensions of JCU
For JCU installation and the service space, refer to section 6 “Outline drawing 2)”.
Case 1 Case 2 Case 3
Height of radar stand Below 0.9m Between 0.9 to 2 m Higher than 2m
Safety belt fix part
● ○ ○
Scaffold
● ○ ○
Storage structure
● ○ ●
Ladder
● ● ○
Ladder fix part Entrustment Inside radar stand
Figure 4.2: Radar stand
Table A
Top of radar stand
Radar stand
Height
Working plane