Dorgard

We’ve all seen or done it before! A fire door wedged open on a hot sunny day or the fire door propped open so that people can easily pass, however it is illegal and dangerous to do this, in fact it is a direct contravention of Fire Safety regulations in the UK. In the event of a fire, this hazardous practice will result in the fire spreading quicker, causing more damage and putting people’s lives at risk.

Dorgard enables you to legally and safely keep fire doors open, by allowing the door to close when the fire alarm sounds preventing the spread of fire and smoke. Installed onto the bottom of the fire door in under 5 minutes, Dorgard is listening for a continuous fire alarm of 65dBA or higher.

Features:

Wireless unit with fail-to-safe technology
Improves access throughout buildings in line with the Equality Act 2010
Complies with BS EN 1155 and accepted by the Fire and Rescue Service
Available in a variety of colours and finishes
Automatic night-time release facility
Complies with BS 7273-4 category C
Adjustable sensitivity
CE marked

Inexpensive to buy, Dorgard requires no wiring as the unit is battery operated and is fitted to the bottom of the fire door using 4 screws.

Dorgard can also be leased, the cost of which includes installation, annual servicing and full warranty for the term of the contract.

As with all fire safety devices, a Fire Risk Assessment should be carried out prior to installation.

Please contact us for a quote or for more information.

How it works?

Once installed, Dorgard works by listening out for a continuous sound of 65 decibels or higher. Once this sound has been identified, after approximately 14 seconds Dorgard will release the fire door and under the pressure of the overhead door closer the door will close, sealing the area and preventing the spread of smoke and fire.

As Dorgard is wireless it requires no wiring into the building’s main fire alarm system meaning that disruption during installation is minimal and fast.

When Dorgard is holding a fire door open, it “listens” for the continuous sound of a fire alarm. Dorgard needs to “hear” a fire alarm that exceeds 65 decibels for longer than 14 seconds. At a general noise level of 80 decibels Dorgard will release. This facility has been built into the unit as a safety feature. Should the noise level in your premises exceed 80 decibels it is unlikely that you would hear a 65 decibel alarm, therefore the Dorgard releases the fire door to close.

Installation & Operation

Installing Dorgard takes only a few minutes. It is completely wireless and battery operated.

Firstly open the top compartment of Dorgard using a screwdriver and install the batteries. The 2 C sized batteries supplied should last for at least 12 months.

It is recommended that fire doors are closed at night; therefore Dorgard has an automatic night-time release facility. To enable this select the night time dip switches on the back of the unit. Also note the serial number in the Maintenance Record, supplied in the Fitting & Operating guide.

With the door closed, position the fitting template provided against the door on the side that shuts against the frame. Mark the holes for fixing through the fitting template.

Fix Dorgard to the fire door using the four screws supplied. The correct position is when, with the plunger fully retracted, the door can swing free and with the Dorgard plunger depressed, contact with the floor or floorplate holds the door open.

Twelve hours after install and every 7 days after this point, Dorgard will self-test. Should Dorgard detect an internal fault it will sound a warning tone and fail-to-safe, closing the door.

Next fix the floorplate in a position that is in line with Dorgard.

Before drilling holes or fastening screws, check the location of water pipes, electrical points and gas pipes.

Open the fire door to the desired position, stand sideways to the fire door and press down on the plunger to hold the fire door open. To release the door, kick the black knob.

Test your fire alarm to ensure that Dorgard releases the door. Finally, fix the fire door sticker.

Tech Spec

Dimensions and weight

Overall height: 205mm
Main casing height: 150mm
Width: 195mm
Depth: 45mm
Packed kit weight: 950g
Product only (including batteries): 700g

Material and operating specifications

Casing: ABS
Power: 2 x 1.5v C size alkaline batteries (do not use rechargeable batteries)
Expected battery life: 12 months
Trigger: by alarms compliant with BS 5839-3

Please contact us for a quote or for more information.


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