Terminal Box Requirements; Installation; Control System Requirements - Nederman FlexFilter EX Manual De Instrucciones

NOTE! Signal from Explosion Relief Panel Sensor
must immediately trigger a full stop of the operation
of the FlexFilter EX . Furthermore indication of burst
explosion relief panel should trigger a work area alarm
(visual and sounding), warning employees and others
of detected explosion and possible fire in the FlexFilter
EX .
NOTE! To minimize possible secondary damage and
spread of fire, it is important to develop the proper
documentation and checklists of how to handle a fire
in the filter. Such documents should be developed in
co-operation with the local fire authorities and take into
account the properties of the collected material .
It is highly recommended that a fire alarm is connected
to the filter control system. Triggered fire alarm must
immediately trigger a full stop the operation of the
FlexFilter EX .

Terminal box requirements

The terminal box is a category 3D component with
special requirements indicated by the marking "X" . To
achieve the proper level of protection special require-
ments, such as system control, signal voltage and
signal fuses must be fulfilled. These requirements are
described in chapter "Installation" in this manual
The intended use of the terminal box is to be a part of
the FlexFilter EX electrical system . The terminal box is
not intended to be used as a stand alone component
as the protection of the terminal box depends on it be-
ing part of the FlexFilter EX .
The terminal box manual contains detailed information
regarding Declaration of Conformity, ATEX approval
and special requirements .

Installation

From the control system (see picture no. 18 / 5), fit a
multi-wire cable (see picture no . 18 / 4) to the cable
gland on the terminal box (see picture no . 17 / 1) .
A 12G0 .75 cable is recommended . Ensure IP6X pro-
tection of the cable and that the cable is installed with
proper strain relief .

Control system requirements

WARNING! Control signals must be fused,
maximum 5 A, to avoid heating of the terminal
box and outgoing electrical wires .
Cleaning valve operation,
• 24 V DC, Signal opens the valve.
• For a FlexFilter EX Twin, the second cleaning valve
must operate in sequence . Normally it opens 10
seconds after the first one is closed.
Explosion Relief Panel Sensor indicates an open Ex-
plosion Relief Panel .
• Signal 24 V DC, closed circuit when Explosion
Relief Panel is closed (intact) .
FlexFilter EX
• Alarm if open circuit
EN
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