SGB VLXE Ex M Series, Документация

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VACUUM LEAK DETECTOR VLXE .. Ex M and VLXE .. Ex MMV
28/07/2020
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(1) Attach the measuring gauge to the connection on three-way
valve 21 and turn valve 180°.
(2) For pipelines:
Open the test valve at the end opposite the leak detector; in case
of multiple pipe interstitial spaces, the test valves must be
opened sequentially at the end opposite the leak detector.
For tanks
Turn three-way valve 20 90° (UZS) so that the suction line and
system are ventilated.
(3) Check if the measuring gauge registers a vacuum drop. If no
pressure drop occurs, locate and correct the cause.
(4) Return three-way valves to the operating position and remove the
measuring gauge.
7.3.3 Testing the switching values with the interstitial space
(1) Attach measuring gauge to connection on three-way valve 21
and turn valve 180°.
(2) For pipelines:
Pen the test valve on the end away from the leak detector, in
case of multiple pipe interstitial spaces, the leak detector-side
shut-off cocks of the interstitial spaces not included in the test
can be closed
For tanks
Turn three-way valve 20 90° (clock-wise) so that the suction line
and system are ventilated.
(3) Check switching values ”Pump ON” and ”Alarm ON” (with visual
and audible, if available). Record the values.
(4) Press the “Audible alarm” button if necessary.
(5) Return three-way valve 20 to its original position or close test
valve and check the switching values “Alarm OFF” and “Pump
OFF”. Record the values.
(6) The unit passes the test if the measured switching values fall
within the specified tolerance.
(7) Open any shut-off cocks that were closed prior to the test.
(8) Return three-way valves to the operating position and remove the
measuring gauge.
7.3.4 Testing the switching values with the testing device (see Section “Accessories”)
(1) Connect the testing device to the two hose ends on each of the
free connections of three-way valves 20 and 21.
(2) Connect the measuring gauge to the T-piece of the testing de-
vice.
Functional Check and Maintenance
21 20
21 20
21
20
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