Chapter 2 Safety information
Operating manual HE 5710 / HE 5711
10
Version 1.3
The following provisions must be observed:
Attach the cables to the cable glands correctly in order to retain the protection class.
Operation with an opened lid is not permissible.
The tightness of the hose screw connections/glands, for example for ∆p measurement or
measuring hose cleaning, must be checked.
Provide unneeded housing bores with locking bolts.
It is only permitted to clean the housing with wet cleaning agents in order to avoid static
charging.
It is required to clean the device in order to prevent increased dust formation.
The device is marked with:
II3D
Device category: use in zone 22 for dust during normal operation
Ex
Designates an electrical equipment
tc
Type of ignition protection: protection by housing
IIIC
Dust group: conductive dusts
T135°C
Temperature class: maximum permissible surface temperature
Dc
Device protection level: use in zone 22 for dust
IP65
Protection class: dust-proof, scoop-proof
Troubleshooting!
When beginning to troubleshoot, all possible sources of error regarding additional
equipment or cables (measuring lines, wiring, slave devices) should be taken into
consideration. If no error source can be found after examining these points, we
recommend to send the device to the supplier.
Decommissioning!
Disconnect the power supply entirely if the device is to be decommissioned. Se-
cure the device against inadvertent operation!
If the device is interconnected with other devices and/or equipment, the effects of
the deactivation should be considered prior to disconnecting the device and the
appropriate precautions should be taken beforehand.
