Mounting And Dismounting; General; Fieldbus Junction Boxes With The Type Of Protection Ex I; Fieldbus Junction Box (Ex I) In Field Housing F*-Jb*-I - Pepperl+Fuchs F-JB Series Manual

F2-JB-#.I, F*-JB-#.*

Mounting and Dismounting

7 Mounting and Dismounting
The following section applies to all fieldbus junction boxes.
7.1

General

Only trained and qualified personnel may mount or dismount the device.
The housing of the fieldbus junction boxes are designed for wall mounting.
Mounting an F2 housing: Use 2 screws with a Ø = 6 mm.
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Mounting an F3/4 housing: Use 2 screws with a Ø = 4 mm.
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Choose mounting accessories that suit the existing mounting surface and ensure a
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secure attachment.
Observe the recognized rules of the technology and setup requirements when mounting and
dismounting the device. Particularly when working on electrical systems, special safety
requirements must be observed. Pay special attention to the following points:
1. Is the fieldbus junction box installed in accordance with specifications?
2. Is the fieldbus junction box free of damage?
3. Is degree of protection ensured?
4. Are all screws tightened securely?
The torque to be used on the fastening screws depends on the type of screws used.
Tighten the cover screws to a torque of 2.5 Nm.
7.2

Fieldbus Junction Boxes with the Type of Protection Ex i

When installing the fieldbus junction box with the type of protection Ex i in explosion hazardous
(classified) locations, the following points are particularly important.
7.2.1

Fieldbus Junction Box (Ex i) in Field Housing F*-JB*-I*

Danger!
Explosion hazard from electrostatic charge
Electrostatic charges can discharge and consequently ignite a surrounding potentially
explosive atmosphere while installing or operating the device.
Avoid electrostatic charges during installation and operation of the device.
Danger!
Explosion hazard from insufficient preventative mounting
In equipment category 1G, Zone 0, operating the device without protective measures against
potential ignition sources can cause sparks. This can ignite the surrounding potentially
explosive atmosphere.
Ensure that the fieldbus junction box is mounted in such a way that ignition sources such as
sparks caused by impact effects or friction of metals are excluded even in the event of rarely
occurring operating faults.
Danger!
Explosion hazard from wrong plastic cable gland installation
In equipment category 1G, Zone 0, wrong installation of plastic cable glands on the device can
cause sparks. These can ignite the surrounding potentially explosive atmosphere.
Ensure that fieldbus junction boxes with plastic cable glands are installed in such a way that the
cable glands are secured against mechanical damage.
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