The final step of the fire alarm and detection system installation, Commissioning is possibly the most important step in the installation of the fire alarm system. This is because they are the person who checks the whole system and sign's it as safe and fit for purpose.

First they check it is fitted as per the design specifications and the as-fitted drawing and that the system complies with BS5839 and wirring is to the wirring regulations and safe to use.

Once they are satisfied the system is as it should be the commissioner will then test every device, detector and sounder on the system including checking the system performs as it should in various fault scenarios. If the commissioner is not happy with the system he will give a list of works to be done before a re-test and will not pass it or certificate it.

Our traffic light commissioning system has been designed to help our customers in achieving results. If you don’t want to spend time addressing analogue systems or fault finding, try red, amber or green services.

• RED traffic light commissioning service for the commissioning of up to 25 devices per day
• AMBER traffic light commissioning service for the commissioning of up to 50 devices per day.
• GREEN traffic light commissioning service for the commissioning of up to 75 devices per day or 37 per half day.

All three of the Traffic Light Services include the following:

• Fully qualified commissioning engineer with state of the art equipment/insurance/CSCS card and CRB check
• Fire Safety Log Book (BS 5839-1)
• Fire Safety Log Book folder with lock & keys
• CAD zone chart
• End user training and handover
• Our fire alarm designers have Design Indemnity Insurance
• Electricians who installed system only needed first day, first hour on site to confirm installation is fault free
• Next working day certification

Commissioning is important… so let’s get it right! - Scroll down for more information on each traffic light services we offer.

Contractor's Commission Checklist

        (Addressable systems)

• You have tested, a dedicated mains 240V supply into a single gang back box, with a 2 gang yoke, fuse holder one side and a secret keyswitch the other (wired in FP cable) to the fire alarm panel.
• You have a maximum of 10 devices left to second fix.
• You have some/no devices addressed.
• You have continuity of each of the ring circuits - earth to earth and positive to positive.
• You have tested continuity between positive and negative, positive and earth and negative. All reading show no continuity nd that readings are greater than 2m ohms.
• You have full wiring diagrams. (Marked with address numbers, loop number and panel number.)
• You have a full list of text that needs to be allocated to each device on the system.
• You have earthed all connections into the fire alarm panel.

Contractor's Commission Checklist

(Conventional/twinwire systems)

• You have tested, a dedicated mains 240V supply into a single gang back box, with a 2 gang yoke, fuse holder one side and a secret keyswitch the other (wired in FP cable) to the fire alarm panel.
• You have a maximum of 10 devices left to second fix.
• You have tested continuity between positive and negative, negative and earth and earth and positive. When linking end of radial circuit together and measuring from panel on each circuit.
• You have proved that low voltage (<24V DC) reaches last device on each radial circuit.
• Your end of line devices re fitted at the end of your radial circuits are left in the fire alarm panel.
• You have full wiring diagrams (marked with devices and radial number)
• You have earthed all connections into the fire alarm panel.