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SERVICE
5
5.1 Periodic maintenance
5.1.1 General notes
In normal operational conditions, no maintenance is necessary. If it is necessary, maintenance must be
done by approved personnel (the manufacturer or personnel approved by the manufacturer).
NOTE! No field serviceable parts inside. Eventually faulty devices must generally be replaced and
returned to the supplier.
INFORMATION!
For more data about regular inspections and maintenance procedures for devices with Ex and other
approvals, refer to the related supplementary instructions.
You must remove the device for cleaning only if the antenna does not have the purging system
option. If it is necessary to clean the device, obey the instructions given in the handbook.
5.1.2 How to clean the top surface of the device
WARNING!
Do not let more than 5 mm / 0.2
source of ignition in a potentially explosive atmosphere.
DANGER!
Risk of electrostatic discharge from the gray plastic sun cover.
Obey these instructions:
• Keep the thread of the terminal compartment cover clean.
• If dirt collects on the device, clean it. Wipe the plastic sun cover with a damp cloth.
5.1.3 How to clean horn antennas under process conditions
If it is possible that there will be build-up or condensation, purging options are available for Metallic
Horn antennas. Purge the antenna at intervals to make sure that the inner surface of the antenna
stays clean and the device measures accurately.
WARNING!
Purge the antenna with a dry gas or liquid that is applicable to the process.
CAUTION!
Purge the antenna at intervals to make sure that the inner surface of the antenna stays clean and the
device measures accurately.
For more data, refer to the table that follows:
72
of dust collect on the top surface of the device. This is a possible
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OPTIWAVE-M 7400 C
02/2019 - MA OPTIWAVE-M 7400 C R01 en
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