Appendix
vatech A9 (Model: PHT-30CSS) Installation Manual
A-1
Appendix
A. Installing the Warning Lamp and Door Interlock Switch
Requirement
1. The warning control system shall be connected to the ERB (earth reference bar)
of the room that it is associated with.
2. The switching arrangements, location, height, and several illuminated warning
signs shall be agreed upon with the local radiation protection advisor (RPA).
(customer)
3. A fluorescent lamp shall not be used in the ‘X-rays on’ sign.
4. The customer shall be responsible for the proper installations for the warning
control system, including the lamp and door interlock switch, based on the
MEIGaN guideline.
MEIGaN: Medical Electrical Installation Guidance Notes
5. Pre-installation planning is crucial to the successful installation of these devices.
6. For further details, refer to the accompanying volume: Specification for Electrical
Installation
Block Diagram
