How often should fire dampers be serviced?

one year
How often do fire dampers need to be inspected? It is recommended that each fire damper must be tested and inspected one year after the installation.

Do fire smoke dampers have fusible links?

Smoke dampers and most combination fire/smoke damp- ers do not use fusible links to operate. These dampers use an electric or pneumatic actuator to operate the damper. Once the electrical power or air pressure is interrupted the spring return feature of the actuator closes the damper.

What is a fire damper fusible link?

Fusible Link: A temperature sensitive device that holds the damper components in the open position, which in turn, allows air to pass through. When the fusible link opens, it releases the damper components to close, and they will stay closed until a new fusible link is installed.

How does a fusible link fire damper work?

In general a fire damper works when heat from a fire causes the normal temperature of a room to rise to approximately 165 degrees Fahrenheit i.e. it is designed to close automatically on the detection of heat. The fusible link which is attached to the damper melts causing the dampers’ door to close.

Where are fire dampers required?

Generally, fire dampers are required where air ducts penetrate walls that are rated for 2-hours or more. They are needed in all air transfer openings (non-ducted) in rated walls, regardless of the rating. And they are required at some, but not all penetrations of rated floor assemblies and shaft enclosures.

How do you reset a spring loaded fire damper?

To reset a damper, each stainless-steel blade is repositioned by pushing back the latch under spring tension. Once all the blades have been pushed back, the latch springs out to secure them.

Do smoke dampers need to be on emergency power?

Either emergency power should be provided or smoke dampers should be arranged for fail-safe closure upon failure of power to the actuator. Both the IBC and NFPA require that adequate access be provided to allow inspection and that maintenance of the smoke damper be provided.

Are fire dampers mandatory?

Ventilation ductwork should comply with BS 5588: Part 9 and HTM 2025-ventilation in healthcare premises . Ductwork passing through compartment and sub-compartment walls should be provided with fire dampers. When ducts serve a hazard room, then fire dampers are required.

How does a fusible link in a fire damper work?

Quite often installed fire damper devices have a fusible link, which is defined by BS 99999 as a ‘device that releases a component such as a fire damper or fire shutter at a set temperature.’ Basically when the fusible link comes into contact with high heat, the link will melt, causing the damper to close and stop the spread of fire.

What do you need to know about fire dampers?

Operational testing normally involves removing or melting the fusible link and letting the damper close. After the damper closes, it is reopened and the fuse link replaced.

What happens when a fusible link is damaged?

At the completion of the test, the damper shall be returned to the fully open position, and the fusible link shall be reinstalled or replaced. If the link appears damaged, it shall be replaced with a functionally equivalent link.

What are dynamic curtain blade fire dampers used for?

Dynamic, multiple blade fire dampers provide another solution to the access and maintenance issues posed by the dynamic curtain blade dampers. Multiple blade fire dampers are easy to both test and reset since the blades can be operated and held open via a hand lever or a pair of pliers while the fuse link is replaced.

How often should fire dampers be serviced? one year How often do fire dampers need to be inspected? It is recommended that each fire damper must be tested and inspected one year after the installation. Do fire smoke dampers have fusible links? Smoke dampers and most combination fire/smoke damp- ers do not use fusible links…