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2. INSTALLATION
Attention! The devices described in this manual must be installed by trained personnel in conformity to current laws
and regulations, following all of the instructions in this manual.
Before installing, check that the indicator is in whole condition and was not damaged in shipment. Make sure that
the package contains all of the accessories listed on the accompanying document, especially the gasket and the
fastening brackets.
Check that the order code matches the configuration required for the intended application (supply voltage, number
and type of inputs and outputs). See Chapter 10 - Ordering code - to check the configuration corresponding to
each order code.
Attention! If even one of the requirements mentioned above is not satisfied or there is noticeable damage to the unit,
discontinue the installation and contact your Gefran dealer or Gefran Customer Service.
2.1.
Mounting the indicator
2.1.1.
General considerations
The instrument is designed for permanent indoor installation.
It must be mounted in electrical panels or in panels control-
ling machines or production process plants that are able to
protect the exposed terminals on the rear of the instrument.
Attention! DO NOT install the instrument in a po-
tentially inflammable or explosive atmosphere.
Attention! the instrument is used in applications
with risk of harm/damage to persons/property, it
MUST be connected to dedicated alarm devices.
It is advisable to provide a means of alarm checking
and intervention even during instrument normal
operation or through the equipment where the in-
strument is monitored.
The indicator must be installed in a location that is not subject
to sudden temperature changes or to freezing or condensa-
tion, and no corrosive gases must be present.
The indicator can work in Pollution Degree 2 environments.
Do not allow scrap or metal particles from machining or con-
densation products to reach the device.
The instrument is sensitive to strong electromagnetic fields.
Do not position it near radio devices or other equipment that
may generate electromagnetic fields, such as power contac-
tors, relays, thyristor power units (especially phase angle),
motors, solenoids, transformers, high-frequency welders,
etc.
2.
INSTALLATION
2.1.2.
For correct installation, respect the dimensions of each hole
and the distance between adjacent holes shown in the figu-
res for each model ("Figure 2 - 650 L Cutout and mounting
Dimensions" on page 9, "Figure 4 - 1250 L Cutout and
mounting Dimensions" on page 11.
2.1.3.
The front of the instrument has an IP65 protection index, so
the device can be installed without problems in rooms that
are very dusty or subject to splashing water provided:
•
•
•
•
80224_MHW_650 L - 1250 L_07-2018_ENG - 12
Mounting dimensions
Attention! The support on which the operator panel
is mounted must:
•
be sufficiently rigid and robust to support the
device without bending during use;
•
be from 1 to 4 mm thick to allow the device to
be fastened with the supplied bracket.
Protection against infiltration of dust
and water
the housing in which the device is inserted is dust-tight
and watertight;
the support on which the device is installed is perfectly
smooth and without undulations on the front;
the hole on the support respects the specified dimen-
sions;
the device is fully tightened to the support to ensure that
the gasket inserted between the device and the panel is
watertight
Attention! If not adequately protected, the instru-
ment has an IP20 protection index (rear container
and terminal board.
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