mcr WIP type multi-blade fire dampers
“MERCOR” S.A. –
the Company reserves the right to make modifications and changes.
3/15
NOTICE
As at the date of issue of this Operation and Maintenance Manual, previous revisions
become invalid. The Operation and Maintenance Manual does not apply to fire
dampers manufactured before the date of its issue
.
1. INTRODUCTION
The aim of this Operation and Maintenance Manual is to make the user familiar with the intended use, design,
operating principle, correct installation and operation of the product.
The OMM also contains additional information on the conditions of use, maintenance and warranty of the product.
2. THE SUBJECT OF THE MANUAL
This OMM applies to a whole group of mcr WIP type multi-blade fire dampers. Complying with the recommendations
included in the OMM will ensure proper functioning of the fire damper in its purpose of being a fire protection system
used in interior spaces as well as the safety of its users.
3. INTENDED USE OF THE FIRE DAMPER
Use
The mcr WIP type multi-blade (multi-plane) fire dampers may be used as:
the mcr WIP/S type fire dampers
the mcr WIP/V type fire dampers for fire ventilation systems
the mcr WIP/M type fire dampers for mixed-mode fire ventilation systems
the mcr WIP/T type transfer dampers
the WIP/T-G type pressure relief dampers
Fire dampers are not designed to work in ventilation systems where there is a risk of them coming into contact with
dust-laden air unless they have been covered by a special, tailor-made service and technical inspections programme.
Fire resistance
The fire resistance ratings of the mcr WIP type fire dampers are as follows:
The fire ratings depend on the application as well as the manner and place of fire damper installation.
Manufacturing versions
The mcr WIP type fire dampers may be manufactured as:
rectangular fire dampers
rectangular fire dampers with circular connections
round fire dampers
Series of types of dimensions
The mcr WIP type fire dampers are manufactured in the following dimensions:
width: from 120 to 1,000 mm
height: from 160 to 1,000 mm
rectangular fire dampers’ width: 140 mm width of fire
dampers with circular connections: 220 mm
Apart from the standard dimensions, there is a possibility to manufacture fire dampers with any dimensions within
the above ranges. The maximum surface area of the mcr WIP type fire damper is 1 m
2
. The minimum surface area
of a fire damper is 0.019 m
2
.
4.
DESIGN AND OPERATING PRINCIPLE OF THE FIRE DAMPER
Design
The mcr WIP type fire dampers consist of a housing with a rectangular cross section, movable partition made of an
assembly of blades rotating on their axes as well as a release and control mechanism, which is started remotely or
automatically (after a thermal release has been actuated). Fire dampers’ housings are made of galvanised steel
sheet, stainless steel sheet or acid-proof sheet. An integral part of the housing is a flange made of a fire-resistant
plate. Each damper blade is made of galvanised steel sheet, stainless steel sheet or acid-proof sheet with a
plasterboard inside. On inside of the housing, along the partition axis, an intumescent seal and ventilation seals have
been installed. The partition’s blades rotate on their axes which are made of steel pins. On the blades, ventilation
seals have also been installed. The blades are connected by means of a steel slat that provides the drive. Square
and rectangular fire dampers have been equipped with flanged frames allowing to install them in ducts. In the case
of a round duct, a square fire damper is manufactured and equipped with a circular flanged connection or a spigot
is used.
