SGB VLXE Ex M Series, Documentation

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28/07/2020
VACUUM-LEAK DETECTOR VLXE .. Ex M and VLXE .. Ex MMV - 39 -
7.3.9 Testing of the probe (only VLXE .. Ex MMV LS)
(1) Bring the probe into the alarm state. Depending on the probe ver-
sion, either by pressing a test button (“WHG probes”), by turning
the housing (float), or by removing it and dipping it in test liquid.
Note: If the probe is checked by removing it the stop valves must
be closed to maintain the vacuum in the interstitial space. Open
again after the test!
(2) Check probe alarm as per Section 4.6.1 and the switching of the
solenoid valve.
(3) Establish the probe operating condition again; the probe alarm
goes out and the solenoid valve opens.
7.3.10 Achieving the Operating Condition
(1) Test if all pneumatic connections are completed.
(2) Check that the three-way valves are in the correct position.
(3) Seal the housing.
(4) Seal the shut-off cocks (between the leak detector and interstitial
space) for each connected interstitial space in the open position.
(5) Attach a sign with troubleshooting information.
(6) Fill out a test report and hand over to the operating company.
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Functional Check and Maintenance
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