4
Parts and function
4.1 Overview
Fig. 3: Smoke control damper EK-JS
1
Enclosure
2
Linkage cover (cut open)
3
Linkage
4
Actuator
5
Rating plate
6
Side seal
7
Damper blades
8
Damper blade profiled seal
4.2 Functional description
Smoke control dampers of the EK-JS series are used in
smoke control systems and serve, on the one hand, to
remove smoke gases and thermal energy and, on the
other hand, to allow fresh air to flow into the area to be
kept smoke-free.
The EK-JS is used in pressurised ventilation systems to
keep smoke out of
safety stairwells and their vestibules
Fire brigade lift shafts
Escape tunnels
The EK-JS is intended for use in single sections.
It is allowed to be used in combined ventilation/smoke
extract systems as a combination damper for smoke
extraction as well as for restricting extract air flow rates.
Regular maintenance of the smoke control damper is
required to ensure its functional reliability
.
Smoke extract
Fig. 4: Smoke extract system
①
EK-JZ or EK2-EU in solid shaft wall
②
EK-JZ or EK2-EU in solid wall or duct
③
EK-JZ or EK2-EU on solid shaft wall
④
EK-JZ or EK2-EU on a vertical smoke extract duct
(shaft)
⑤
EK-JZ or EK2-EU on a horizontal smoke extract
duct
⑥
EK-JS
in a horizontal smoke extract duct
⑦
EK-JS
at the end of a horizontal smoke extract duct
⑧
EK-JS
, EK-JZ or EK2-EU as additional supply air
inlet
⑨
Cover grilles
Smoke control dampers are completely closed during
normal operation. In smoke extraction mode, the smoke
control dampers in the affected fire compartment are
opened to extract smoke from it. All other smoke control
dampers remain closed.
In the event of a fire, smoke control dampers that are
used as additional supply air inlets in the affected fire
compartment also open so that smoke can be extracted.
To ensure the creation of a layer that is nearly free from
smoke, smoke control dampers used as additional
supply air inlets should be installed near the ground.
The control input signal for the actuator may come from
a duct smoke detector or from the central fire alarm
system. Using cables with specific circuit integrity for the
supply voltage ensures that the actuator is supplied with
voltage even in the event of a fire and hence that its
function and the communication are maintained.
Parts and function
Functional description
Smoke control damper EK-JS
14
Summary of Contents for EK-JS
Page 53: ...Decommissioning removal and disposal Smoke control damper EK JS 53...
Page 54: ...11 Flange dimensional drawing Flange dimensional drawing Smoke control damper EK JS 54...
Page 57: ...Smoke control damper EK JS 57...
Page 58: ...Smoke control damper EK JS 58...
Page 59: ...Smoke control damper EK JS 59...
