Special Warnings For Atex Normative; Precautions To Be Taken To Avoid That Certain Ignition Sources Become Active; Installation - Farr camfil STR2 User Manual

• Always connect the device to ground
• Do not swap the DIN connectors. If a connector requires excessive force check
that they are not swapped.
• To maintain the IP65 protection level of the DIN connectors follow the following
recommendations:
o Disconnect and lock out power to the controller.
o Allow 10 seconds for the capacitors to discharge.
o The DIN PG9 compression fitting is designed for 6 to 8 mm (1/4" to 5/16")
cable.
o Cable ends and outer insulator must be fully inserted into compression
fitting.
o Cable wires should be securely fastened to screw terminals.
o Make sure the ground is connected correctly for this circuit extends to the
brass bodies of the solenoid valves.
o Make sure the DIN gasket is installed correctly.
o The screw on the connectors cap should be the original or an exact
equivalent.
For the use of this device in a zone where a potentially explosive atmosphere
Precautions to be taken to avoid the activation of certain ignition sources:
•
The plant designer, the installer and the final user must verify that the maximum surface
temperature declared for this device (90°C) is less than 2/3 of the minimum ignition
temperature for the type of dust found in the plant which can cause a potentially
explosive atmosphere.
•
It is necessary to take protective measures against lightning strikes in the plant where
this device is installed. It is necessary to protect the device against stray electrical
currents coming from lightning strikes near where this device is installed
•
Any accessory (electrical or not electrical) applied by the user to this product, must
conform to the directive 94/9/EC and must have classification CE – Ex compatible.
Moreover any such accessory must be installed in compliance with the instructions given
by its manufacturer/supplier.

Installation

•
During the mounting of this device, be careful not to damage any internal components of
whatever it is being mounted to.
•
During the mounting of this device in a dangerous zone, it is necessary to prevent the
formation of sparks due to the rubbing of oxidizable substances like iron or steel.
•
During the installation phase this equipment must be grounded by means of a electrical
connection. All of the external metallic components will then be grounded.
•
The cables for the power-supply, for the output relay contacts and for the other
input/output connections must be installed by the user by means of suitable entry
WARNINGS:

SPECIAL WARNINGS FOR ATEX NORMATIVE

could be created due to combustible dust.