5-Yearly Maintenance; Part Numbers; Spares; General - Siemens UTMC OTU Handbook

Remove the mains power and the battery fuse, which will power down the unit and
carry out all the following procedures:
(a) General inspections of the unit in situ for any contamination, overheating of
components, corrosion or battery leakage. Rectify where necessary.
(b) Check the tightness of all interface cables and re-tighten where necessary.
(c) Check the condition of the interface cables; making sure there is no chafing of
the insulation and that the general condition of the insulation is good. Replace
any damaged or worn cables.
(d) Check the mechanical tightness of the main securing screws of the unit and re-
tighten where necessary.
(e) Replace the battery fuse, restore mains power to the controller and the unit.
This completes the annual maintenance of the unit.

5.4.2 5-Yearly Maintenance

It is recommended that every five years, in addition to the annual maintenance routine
described above, all batteries be replaced. See Section 5.6.3 for battery part numbers.
2
Gemini CPU PCB .................................................................................. 667/1/26608/999
2
Gemini PSU PCB Assembly ................................................................ 667/1/32604/000
2
Gemini Aux PSU PCB Assembly ......................................................... 667/1/26560/000
2
Basic Gemini Outstation (Processor & PSU only, no modem) .............. 667/1/32605/000
OTU 19" rack (2U modem tray) – see 2.3 for other variants .................. 667/1/31601/519
ST4S Detector ........................................................................................ 667/1/27663/000
24V 50VA Transformer kit ...................................................................... 667/1/27853/002
Detector Cable Termination kit ............................................................... 667/1/15854/000
Digital IO Expansion kit .......................................................................... 667/1/26580/003
Traffic Outstation mounting kit ................................................................ 667/1/26577/000
Gemini Battery kit ................................................................................... 667/1/30615/000
The authorised maintenance agent should hold the following spares. Some of the parts
listed in Section 5.5 above are also available as spares. Contact Siemens Poole for
details.

5.6.1 General

BUS/MOVA IO Card Assembly .............................................................. 667/1/27881/000
667/HB/31601/000

5.5 PART NUMBERS

5.6 SPARES

Page 37
UTMC OTU/MOVA Handbook
Issue 5