Specifications
Siemens Mobility, Traffic Solutions
Sopers Lane, Poole, Dorset
BH17 7ER
Version  10  Page 2 of 120  Status  Issued 
Last Editor  harry.smyth    Date  03 November 2014 
Document 
Name 
GENERAL HANDBOOK FOR HEIMDALL 
DETECTORS 
Doc. No.  667/HB/31900/000 
Copyright  Siemens plc 2014 All Rights Reserved 
Preface 
Safety of Installation and Maintenance Personnel 
In the interests of health and safety, when installing, using or servicing this equipment the 
following instructions must be noted and adhered to: 
(1) Only skilled or instructed personnel, with relevant technical knowledge and 
experience, who are also familiar with the safety procedures required when dealing 
with modern electrical/electronic equipment, are to be allowed to use and/or work on 
this equipment. All work shall be performed in accordance with the Electricity at 
Work Regulations 1989. 
(2)  Such personnel must take heed of all relevant notes, cautions and warnings in this 
Handbook and any other Document or Handbook associated with the equipment 
including, but not restricted to, the following: 
(3)  The equipment must be correctly connected to the specified incoming power supply. 
(4)  Mains voltages may be present within traffic signal heads. Before any maintenance 
work within the signal head is carried out, any mains supply to it must be isolated / 
switched off. 
(5)  Only trained / competent persons should work on this equipment. 
(6) Surfaces within the associated traffic signal get hot, e.g. lamp, lens and reflector. 
Therefore care should be taken when working in such areas. 
(7)  Any power tools must be regularly inspected and tested. 
(8)  Any ladders used must be inspected before use to ensure they are sound and not 
damaged. 
(9)  When using a ladder, before climbing it, ensure that it is erected properly and is not 
liable to collapse or move. If using a ladder near a carriageway ensure that the area 
is properly coned off and signed. 
(10) Any personnel working on site must wear the appropriate protective clothing, e.g. 
reflective vests, etc. 










