Cirque du Soleil Wireless Fire Alarm Installation – Day 2
This is day two of our three-day wireless fire alarm installation video blog.
Following our first day’s work, which involved installing the twenty-two wireless manual call points and sounder back boxes to the fire point stands.
Powering up Wireless Translators and Expanders
The next stage is to temporarily power up the Hyfire translator and the two dynamic Expanders using batteries; the fire alarm panel is not required at this stage. The commissioning engineer then plugs his laptop to the relevant unit and can now log on the radio devices to the appropriate Expander according to our design.
Logging on the devices to the relevant Expanders
As stated, the fire alarm panel is not required at this stage, all the logging of the devices can be carried out either manually, which would involve setting up the devices using the onboard device del switches, or automatically using the software and laptop. As you can observe our engineer selected the easier route using the laptop.
You will also observe, the primary round CR2 batteries are already inserted and does not affect the logging on-procedure. However, the main secondary battery is not inserted until the device is ready to be logged on to the translator or Expander. Inserting the battery is part of the logging on-procedure.
The translators and Expanders are IP65 rated. This allows us to place the units outside if required. For this designed, the expanders will be located inside the tent and the translator will be positioned outside the security Portacabin at a height of about 3 metres.
To enable us to obtain the best coverage the expanders were placed within the tent but at a high level. Each expander requires a 12v to 24v supply. We installed the power supply at low level.
We unpacked all the manual call points and sounders, inserting the primary battery, but not the secondary main battery. The reason for this, is the round, flat CR2 battery does not have any effect on the logging procedure and therefore, can be fitted straight away. However, the larger secondary battery cannot be fitted until the device is ready to be logged on to the relative unit, which could be either a translator or an expander. In this design, there are no devices on the translator. All the devices have been divided between the two expanders accordingly to the distance from each unit.
The purpose of the translator in this design is to provide the interface for the expanders back to the fire alarm control panel. Expanders do not interface directly to the fire alarm loop; this can only be achieved via a translator.
Wireless Power Supplies
The power supplies have a fault monitoring output relay, this fault output is monitored by the expander. Should the primary 230v main supply feeding the power supply be interrupted, a fault signal is relayed to the fire alarm control panel informing the user of a fault.
All the devices are monitored for a primary and secondary battery fault, plus a tamper fault. The tamper fault is to register a fault at the fire alarm control panel should a detector be removed from its base or a manual call or sounder be removed from its back box.
Placing the expanders at high level inside the tent provided us with a very good radio signal coverage for all the install devices. Also from this position, the expanders were able to pick up the signal from the translator situation outside the security Security cabin. The translator is the only device to be installed outside, as stated the Translator is IP65 and therefore, would not be affected by the elements. The unit was mounted about 3meters high and this was high enough to pick up the radio signals from both Exapnders. We now had communication between the two expanders within the big top tent and the external translator outside the security cabin. The tent and the security Portacabin was now connected wirelessly.
For information regarding all types of wireless fire alarms why not contact our office on 020 8541 5646 or visit our website on www.firesystemsltd.co.uk and complete our contact form.