6 Safety Instructions Safety Manual / Explosion Protection Manual
56926BA26, Rev. 06, 04/2019
6.2 Installation
• Observe the installation and safety instructions of the operating manual.
• Install in accordance with manufacturer's specifications and the relevant stand-
ards and rules.
• Do not operate the device outside of its electrical, thermal and mechanical pa-
rameters.
• Professionally install the housing cover and the screw connections (cable glands,
adapters and blind plugs
2
) to maintain the degree of protection of the housing.
• Unused entries must always be sealed with a blind plug
3
.
• Also observe the installation instructions for the screw connections in this safety
manual.
• The O-ring between the housing cover and socket must be inserted for sealing
the terminal compartment (hereafter referred as connection compartment) in
the groove on the front surface of the socket.
• The cover screws (cylinder screw ISO 4762 - M5x16-A2-70) of the LB 4700-xx-1x /
LB 4700-xx-Ix must be underlaid with self-locking lock washers (NL5 SS of Nord-
lock®) and tightened with a torque of 4 Nm.
• The screw cap of the LB 4700-xx-Fx must be tightened on the hexagon (size SW
19) with a torque of 15 Nm.
• The 1/2 "NPT fitting must be tightened to a torque of 20 Nm.
• Grease must be used on all threadings, OKS 217 is recommended.
• Unused entries must be closed with listed stopping plugs. A tightening torque
of 20 Nm is recommended.
• Before the installation of an intrinsically safe circuit, verification of intrinsically
safe circuits must be provided (see IEC 60079-14).
• The detector must be connected to an equipotential bonding system.
• The intrinsically safe circuit is connected to the probe on the PA.
• Sufficient insulation of > 500 V between signal / power supply circuit (FSK) and
thermometer circuit (PT100) must be ensured.
• The intrinsically safe circuit is galvanically separated with an insulation > 1.5 kV
in the evaluation unit.
• When using a screen, make sure:
o Connect the screen on the detector side.
o Insulation between screen, line and evaluation unit > 500 V respec-
tively.
o DO NOT connect the screen on the evaluation side.
• The temperature of the entry / branching point can exceed 60 °C, select cable
entries that are suitable for the expected temperature.
• Use suitable connecting cable for the ambient conditions.
• Connecting cables (conductors and insulation) must be suitable for a continuous
service temperature ≥ T
a
+15 K.
2
3
blanking elements acc. to IEC 60079
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