Endress+Hauser Prosonic Flow 500 Installationsanleitung Seite 6

EA01370D
• The following requirements must be met with regard to specialized technical staff for the
mounting, electrical installation, commissioning, maintenance and repair of the measuring
devices:
• Specialized technical staff must be trained in instrument safety.
• They must be familiar with the individual operating conditions of the devices.
• In the case of Ex-certified measuring devices, they must also be trained in explosion
protection.
• The measuring device is energized! Risk of fatal injury from electric shock. Open the
measuring device only when the device is de-energized.
• For measuring devices intended for use in hazardous locations, please observe the
guidelines in the Ex documentation (XA).
• For measuring devices in safety-related applications in accordance with IEC 61508 or
IEC 61511: following repair, re-commission the device in accordance with the Operating
Instructions. Document the repair.
• Before removing the device: set the process to a safe state and purge the pipe of dangerous
process substances.
• Danger of burns due to heated surfaces! Before commencing work: allow the system and
measuring device to cool down to a touchable temperature.
• In the case of devices in custody transfer, the custody transfer status no longer applies once
the seal has been removed.
• The Operating Instructions for the device must be followed.
• Risk of damaging the electronic components! Ensure you have a working environment
protected from electrostatic discharge.
• After removing the electronics compartment cover: risk of electrical shock due to missing
touch protection!
Turn the measuring device off before removing internal covers.
• Modifications to the measuring device are not permitted.
• Only open the housing for a brief period. Avoid foreign objects, moisture or dirt entering the
housing.
• Replace defective seals only with original seals from Endress+Hauser.
• If threads are defective the measuring device must be repaired.
• Threads (e.g. of the electronics compartment cover and connection compartment cover)
must be lubricated if an abrasion-proof dry lubricant is not available. Use acid-free, non-
hardening lubricant.
• If, during repair work, spacing is reduced or the dielectric strength of the measuring device
cannot be guaranteed, perform a test on completion of the work (e.g. high-voltage test in
accordance with the manufacturer' s instructions).
• Service plug:
• Do not connect in potentially explosive atmospheres.
• Only connect to Endress+Hauser service devices.
• Observe the instructions for transporting and returning the device outlined in the Operating
Instructions.
Contact Endress+Hauser Service if you have questions:
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Endress+Hauser