Solenoid valve controller HE 5721
General Safety Instructions
1.4. Explosion Protection (for ATEX-approved devices only!)
Explosion protection!
With the lid closed, the device is suitable for use in EX zone 22.
Before opening the device, e.g. for parametrization, make absolutely sure that explosive
atmospheres have been evacuated.
The device is approved for the operation in explosion zone 22.
Device Designation: e II3D Ex tc IIIC T135°C Dc IP65
II 3D Device category: suitable for use in EX zone 22 for dust in normal operating mode
Ex electrical equipment
tc Type of ignition protection: protection by housing
IIIC Dust group: conductive dusts
T135°C max. surface temperature: 135 °C
Dc Device protection level: suitable for use in EX zone 22 for dust
IP65 International protection class: dust-tight and protected against water jets
Troubleshooting!
At the beginning of troubleshooting, all possible sources of faults on additional devices or
supply lines (signal lines, wiring, downstream devices) should be taken into consideration. If
the fault is not found after checking these points, we recommend sending the device to the
supplier.
Decommissioning!
Switch off the power supply on all poles if the device is to be decommissioned. Make sure
to secure the device against being unintentionally switched on!
If the device is linked to other devices and/or equipment, take the impacts of that into
account and take appropriate precautions before switching it off.
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