DIFFERENTIAL PRESSURE SWITCH
Technical Notice
FI 72.0226.1016E
Page 9 sur 10
General instructions for safety, assembly, commissioning, usage and maintenance
to be read before working on the device
I. GENERAL
These instructions must be read jointly with:
+the standard NFC15-100
+the technical data sheet specific to the device
The Sefram devices are designed to be assembled,
commissioned and used in compliance with the
characteristics/data given in the technical data sheet.
Always adhere to all of directives, legislation, orders
and most recent standards in force for the stated field of
application.
The assembly, commissioning, usage and maintenance
operations must always be carried out by qualified and
authorised personnel.
Personnel working on the devices must be familiar with
the safety rules and requirements in force regarding the
components,
devices,
machines
and
electrical
installations.
II. RECEPTION - STORAGE
After unpacking the device, check that this latter has not
been damaged during transport; for certain devices,
remove the protective film from the cover. The material
must be stored inside in a dry place.
In the event of a problem, please contact Sefram.
III. ASSEMBLY
The assembly operations must be carried out by
qualified, skilled and authorised personnel. Personnel
working on these devices must be familiar with the
safety rules and requirements in force.
The box must be mounted vertically.
For material connected permanently to the network, a
quickly accessible cut-off device must be incorporated
into the cabling installation of the building.
The device supply must be equipped with a device for
protection against risks of over-current and fault
isolation. The number of poles protected must be
appropriate to the neutral regime of the building and to
the regulations in force.
The equipment must be connected to the PE protection
mass by green/yellow wires (NFC15-100).
The device is compatible with the neutral regimes TT,
TN or IT;
Nevertheless, we recommend that the device is
supplied through the intermediary of an insulation
transformer for which the primary is supplied between
phases and not between phase and neutral, so as to
avoid any accidental over-voltage caused when the
neutral is cut before the phases.
In the event of a problem, please contact Sefram.
IV. COMMISSIONING AND USAGE
Commissioning
is
authorised
only
after
duly
establishing that the device, the machine or the
installation in which the device has been integrated in a
compliant manner, satisfies all of the directives,
legislation, orders and most recent standards in force.
Commissioning operations must be carried out by
qualified, skilled and authorised personnel. Personnel
working on these devices must be familiar with the
safety rules and requirements in force.
Note: correct operational functioning does not in itself
constitute
an
indication
of
conformity
to
the
recommendations for the use of the material in
complete safety.
Also read the maintenance recommendations which
equally apply during commissioning and use.
In the event of a problem, please contact Sefram
V. MAINTENANCE
The device does not require any special maintenance.
For devices equipped with the pressure measurement,
in order to retain a precise pressure measurement, an
annual calibration is advised particularly at « zero »
(see § calibration on the technical data sheet)
The following operations are recommended; they
constitute a minimum:
-
Before any work intervention, we recommend
that the dust is removed before opening the
box,
-
The MDPP2S-V2 uses double pole neutral
fusing. Power-off the system and replace both
fuses with appropriate replacement fuses.
-
The device must not be opened in an
excessively dusty environment,
-
The settings must be carried out in the shortest
lapse of time so as not to engender any risks,
-
The integrity of the joints must be checked:
remove any trace of dust or other deposit,
-
Remove any trace of dust which could have
penetrated during the setting operation,
-
Always ensure that the transparent cover is
correctly closed.
Maintenance operations must be carried out by
qualified, skilled and authorised personnel. Personnel
working on these devices must be familiar with the
safety rules and requirements in force.
In the event of a problem or any questions during these
operations please contact SEFRAM.
ATEX version : See FI 72.0172 or FI 72.0341
instructions
