User's Manual

SBS-900 Shore Based Radar Systems
Chapter 10: Corrective maintenance
KH-1602-2 issue 1: Standard SBS900 Systems Operator & Maintenance Handbook
Page 123 of 240
10.2.3 Service door removal
Service Door removal: The service door on the turning mechanism must be opened to gain access
to the electrical terminations for the ACP and ARP signals and for connecting
the flexwell in S-Band systems (X-band systems connect externally).
Opening the service access door is not required for any other reason.
Caution: The service access door is heavy, care should be
exercised when removing and handling the door.
The door removal process is identical for both X and S-band systems
Safety clips: There are two safety P-clips that must be
removed to detach the door.
These clips MUST be re-attached when
replacing the service door.
Safety lanyard:
Door bolts:
To prevent a drop hazard, the door is fitted with an internally mounted safety
lanyard. If required this lanyard can be unclipped and the door carefully
lowered to a safe position.
There are nine M8/ 13mm bolts restraining the door. Care should be taken
when removing these bolts are they are NOT captive.
Release points: The door is mounted on two locating
lugs. It may be necessary to gently
leaver the door open using the two
door release points marked on the
door.
Care should be taken to ensure the
paint is not damaged whilst removing
the door.
Replacement: Prior to replacing the door, the following should be checked:
- The system is fully isolated from all sources of AC power
- Ensure the door is correctly located on the mounting lugs and that the
restrain clips have been replaced.
- Pay attention to the safety lanyard as this can easily become trapped in
the door when being closed.
- Tighten all bolts on the main door, the 3-phase motor cover and cable
glands ensuring a full waterproof seal is achieved.
- To prevent corrosion, any chipped or damaged surfaces must be painted
with polyurethane paint.