10 FLOWSIC100 · Operating Instructions · 8012513/YSA5/V2-1/2016-07 · © SICK Engineering GmbH
Important Information
Subject to change without notice
1.3.5 Behavior during a purge/cool air failure
Some system versions are equipped with a purge/cooling air unit to protect the ultrasonic
transducers from hot or corrosive gases. The transducers can be severely damaged should
the purge/cooling air supply fail. For this reason, the operator must ensure:
● The power supply for the purge/cooling air unit operates reliably and without interrup-
tion,
● A failure of the purge/cooling air supply is detected immediately (for example, by using
pressure controllers).
● The sender/receiver units are removed from the duct in the event of a purge air failure
and the duct openings are covered (for example, with a flange cover).
1.3.6 Detecting malfunctions
Any deviations from normal operation must be regarded as a serious indication of a
functional impairment. These include:
● Significant drifts in the measuring results.
● Increased power input.
● A rise in system component temperatures.
● Triggering of monitoring devices.
● Unusually strong vibrations or unusual operating noise from a purge/cooling air blower.
● Smoke or unusual odors.
1.3.7 Preventing damage
To prevent personal injury or damage to the system, the operator must ensure:
● The maintenance personnel responsible can reach the site immediately, and at any
time.
● The maintenance personnel is sufficiently qualified to respond to malfunctions on the
FLOWSIC100 and any resulting operational malfunctions.
● In case of doubt, switch the defective equipment off immediately.
● Switching off the equipment does not indirectly cause further malfunctions.
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