User's Manual

Table Of Contents
NACOS Platinum
ED 3100 G 140 / 04 (2011-11)
Operating Instructions
H-4 Hardware Maintenance
H MAINTENANCE.fm / 10.11.11
H-18
4 Hardware Maintenance
If these operating instructions require you to remove safety systems for maintenance work or repair, be
sure to reinstall them after finishing work. Only remove safety devices if this is necessary for the main-
tenance work or repair. This particularly applies to covers and ground cables.
4.1 Periodical Checks
4.1.1 Limited-Lifetime Devices
Within the radar system there are some devices or parts of units which have a limited lifetime. The
devices and their presumed lifetime are listed below. It must be considered that these devices shall be
checked periodically and exchanged if neccessary.
For more information about the change of components like magnetron or toothed belts please refer
to the technical documentation
Table H / 1 Limited-Lifetime Devices
4.2 Check of the Colour Reproduction
The colour reproduction produced by the monitors must be correct. In the case of doubt and once per
year, the monitor performance must be checked based on the Chart1 presentation. See chapter 3.3 on
page B-14 for details.
HIGH VOLTAGE!
DANGER OF FATAL INJURIES
NEVER assume that a circuit is dead – Always check it for safety’s sake! Contact
with live parts can cause serious or fatal burns and inner injuries by electrocution.
This particularly applies to the Outstation cabinets which may contain components
to which 230 VAC or 400 VAC are applied.
Capacitors and tubes can store dangerous voltages for several hours, even when
they have been disconnected from the supply voltage.
Device Approx Lifetime Procedure
Magnetron
X-Band ~6000 - 8000h
S-Band ~9000 - 16000h
Monthly carry out the check of the performance monitor as
described. See chapter H - 1 on page H-3 for detais.
Toothed belts 12 months
Every 12 months or when the magnetron is exchanged,
change the toothed belt as described in the technical documen-
tation.
Every time the gear box is opened.
Check for mechanical damages as fissures or fractures on the
surface and for visible parts of the weft, especially at the
edges. If such damages are visible, the belts must be
exchanged.