ST950S Plus+ Installation and Commissioning Manual
8. Routine Maintenance Procedures
This section contains a list of checks that must be performed at an ST950 Plus
+
installation on a
regular basis (normally annually).
These instructions override any others that may exist. If a Site PI exists for the specific site, it may
contain instructions that should be carried out in addition to those detailed below.
Important:
All power to the controller must be disconnected before any attempt is made to remove the
internal components of the controller cabinet. The only exception would be when replacing a
48VDC PSU, which has redundancy and allows for hot-swap.
8.1. Routine Inspection of Signal Equipment
•
Check all signal heads/aspects for damage and take any necessary corrective action.
•
Check all signal heads for correct alignment with their respective approaches.
•
Check all pole top cable connections; ensure that they are sound, secure and not seriously
corroded.
•
Check that all top caps are fitted and are not damaged.
•
Check that all poles are secure in the ground and are not leaning or damaged.
8.2. Routine Inspection of Pedestrian Signal and
Demand Equipment
•
Check all pedestrian signalling and demand units for damage and take any necessary corrective
action.
•
Open the pedestrian equipment and inspect no excessive pollution and for secure wiring and
insulation.
8.3. Routine Inspection and Electrical Testing of
Controller
It is suggested that these procedures be performed in the order listed.
Examine the outer case for serious damage. The outer case would normally only be replaced if it has
been damaged to the extent that its security has been breached or that water or dirt is entering.
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