Dorgard Fire Door Retainer - Black

Product Information

Fire doors are an important part of any building's fire safety strategy as they enable movement throughout a building while stopping the spread of fire to allow occupants enough time to evacuate safely. However, fire doors can only function if they are closed or close automatically if a fire occurs. This is the reason why it is dangerous and illegal to hold fire doors open with a wedge or extinguisher.

Hold open the fire door to the required position to align the plunger of the Dorgard to the designated floor plate. BS EN 50130-4:2011 Alarm systems. Electromagnetic compatibility. Product family standard. Immunity requirements for components of fire, intruder, hold up, CCTV, access control and social alarm systems. No. Dorgard listens for a continuous sound and will verify the alarm over a 20 second period and then release the fire door. School bells generally last for a couple of seconds so this shouldn’t affect your Dorgard. - Should I use a particular type of battery and can I use rechargeable ones?Easy-to-install in under 5 minutes, simply fix to your fire door with 4 screws and insert the batteries – no wiring or mains power required

Anthony Burd, Head of the Construction Sector at BSI said: “Until the development of BS 7273-4 in 2007, there was no code of practice with recommendations governing the interface of fire doors and the fire detection /fire alarm system, although there was guidance for the devices themselves.” To prevent warping Dorgard self-tests every seven days which helps to ensure the reliability and alleviate stress to the door which on doors that are wedged open for long periods of time, would cause warping. This self-testing also helps to prevent seizure of the overhead door closer by allowing it to cycle itself. The operation of the Dorgard, or the ability to hear the fire alarm, should not be affected provided the sound level stated in BS5839 is adhered to throughout the building. Dorgards can be adjusted if the sound level does drop slightly within performance limits. In situations where the ambient noise level is above 80 dB, Dorgard has a safety feature that allows it to release automatically to all sounds above 65 dB as you would probably not hear a 65 dB fire alarm over the noise level in this situation.The Dorgard is a safe and legal solution that allows you to hold your fire doors open for improved ventilation, wheelchair access, and general convenience. In the event of a fire, the device will automatically release to close fire doors, responding to the sound of a fire alarm. This fire door retainer by Fireco uses an easy foot-operated setting and release system, which unlike magnetic fire door retainers, can hold the door open in any selected position. Where an electrically powered hold-open device is fitted to a fire door between a corridor and a stairway, a Category L5 system Other operation of The Dorgard will retract its plunger and automatically release every 7 days as part of its preset self-testing routine. One weekly release of the Dorgard to no apparent noise should be accounted as normal routine function of the device.

The Dorgard only listens for a sound every 4 seconds and the sound has to be continuous for 10 seconds for it to operate. This helps to preserve the battery life of the unit and means the operation should not be delayed by any more than 14 seconds. This also compares with other similar retainers that are wired into the fire alarm system and have a built-in delay. The Dorgard is also capable of being adjusted to operate to the sound level of an individual fire alarm making it adaptable to any particular environment. If the end user wants doors held open then his fire detection system needs to be up to scratch, it goes hand in hand and is not an "either or".

News:

The Dorgard is one of our most popular products. It helps our customers to stay legally compliant and at the same time keeps fire doors open when there are periods of high footfall or when the temperature gets stifling during the summer. The Dorgard comes with a very handy and thorough manual. Nevertheless, we do get asked a few questions and to help our customers, we now have compiled an overview of all the questions asked and the answers to them. BSI, the business standards company has revised BS 7273-4:2015 Code of Practice for the operation of fire protection measures – Part 4: Actuation of release mechanisms for doors. The new document has been developed with the FIA and other bodies. The diagrams relating to the location of smoke detectors in relation to electrically held-open fire doors have been revised. This is intended to make the recommendations clearer and to remove possible confusion where a single diagram has been used to convey several principles applying to detector siting and spacing.

Available to supplement your Dorgard Retainer we offer a replacement base plate kit and sets of extra rubber feet, ideal for cutting down on maintenance Provide clear instruction for the operation of the door retainer, install either a Fire Door Safety Release Sign or Nite-Glo Fire Door Safety Release Sign to ensure the device can be used easily in an emergency The guidance in BS 7273-4:2007, Annex A of the previous standard is now normative and, therefore, the standard includes recommendations (in tables in Annex B of this version) as to which category of actuation is appropriate for a particular application.Fire safety is all about good management, and almost any situation can be managed so that the risk is acceptable. Prescriptive guidance is now out, and everything is on (or should be) a risk assessment basis. There have been changes in terminology to assist users of the standard. The designations, A, B and C for categories of actuation are now referred to as ‘Critical’, ‘Standard’ and ‘Indirect’.