Siemens ST950 Handbook page 62

•
Test the cables
•
Re-fit the controller case to the stool
•
In-fill the stool
•
Seal the base
•
Refit the electronics
7.3.2 Removal of Controller Electronics
Ensure the Master Switch is in the OFF position
Remove all PCBs and the Mains Distribution Unit from the rack. Swing the rack
forward and unscrew the retaining bolts for the back plate of the rack. Tie this plate
to a convenient point on the rear face of the cabinet. Lift off the complete rack
assembly from the hinge pins.
The controller outer case is now ready for installation.
7.3.3 Removal of Stool from Outer case
This action may not be necessary as some controllers are delivered to site with the
stool already separate from the outer case ready for installation. If they are
assembled, separate the stool by removing its four nuts, bolts and washers and lift
the rest of the assembly off the stool.
The recommended method of installation is to install the stool without any CET bars
or Master Switch Panel.
As an alternative the outer case, stool and CET bar(s) only may be installed as a
complete assembly. However, firstly the outer case and stool must be separated to
fit the seal.
7.3.4 Removal of CET bars
The CET bars are fitted to the outer case by nuts, bolts and washers, which should
be removed and stored with the bars.
7.3.5 Installation of Stool
A hole should be dug and a flagstone at least 900mm x 600mm embedded securely
at the bottom of the hole. Refer to Figure 22 for the general method of installation
and dimensions. Ensure that enough clearance is left around the stool to enable the
fitting of the CET bars and outer case fixings.
If the controller is being installed on a slope, allowance must be made for the
opening of the door adjacent to the uphill side.
The controller stool is placed in the centre of the flagstone with the top surface
between 50 and 75 mm above the final ground level. It is essential that the stool be
fitted the correct way round with the holes to the front, as shown in Figure 22.
Adjustment may be required to ensure that the outer case sides are vertical; this
should be checked using a spirit level.
Mix up a stiff mixture of concrete (mix: 1 cement, 3 sand, 4 coarse aggregate
(20mm) with no excess water) and cover the flagstone to a height approximately
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Copyright © Siemens Mobility Limited 2018. All Rights Reserved.
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Neil Atkinson
ST950 ICM Handbook
Intelligent Traffic Systems
Sopers Lane, Poole, Dorset, BH17 7ER
Page 62 of 125
Status Issued
Date 18-Dec-2018
Document No. 667/HE/46950/000