SGB VL-H9, Руководство пользователя

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M.:
Date: Feb. 98
Page: 30
Vacuum Leak Detector
VL - H9
SGB
Sicherungsgerätebau
GmbH
57076 Siegen
8.3.6 Operation
Measuring
Measuring
Exhaust
Exhaust
Suction
Suction
VL-H9-Ex und VL-H9/A-Ex VL-H9/A-MV-Ex
After completion of the functional check, the three-way valves must be restored to the
operating position. The measuring and suction lines are connected to the interstitial space, the
connections for testing purposes are closed. The stop valves in the measuring line and in the
suction line must be lead sealed in the open position.
In the signalling unit VL-H9/ME-MV-..., the starting switch must be reset into the operating
position, the status indication lamps for operation and mains must be on. The 'Alarm stop'
switch must be lead sealed and the indication lamp 'Alarm Stop' must be off.
The covers of operation units VL-H9/A-Ex, VL-H9/A-MV-Ex and the leak detector VL-H9-Ex
are lead sealed.
Measuring line Suction line
Shut-off cock on the tank open, sealed open, sealed
Position of the stop valves on the tank during operation.
The specialist must record the test results in a test report.
8.4 Occurrence of alarm signal
(1) In case of an alarm, the red signal lamp 'Alarm' lights up, and the acoustic signal sounds. The
white signal lamp 'Operation' on the signalling unit VL-H9/ME-... goes out.
(2) Remove the lead seal on the switch 'Alarm Stop', stop the acoustic alarm and immediately
contact a specialist company.
(3) Close stop valves in the tank measuring and suction line.
(4) The specialist must establish the cause of the alarm, take remedial action, restart leak detector
no. 7 and carry out a functional check. It is important that the connection lines are suitable for
excess pressure (e.g. tanks to DIN 4119 or tanks with excess pressure) .
(5) In the case where the alarm is attributed to a defect in the leak detector (e.g. mechanical
damage, failure of a component ....), the manufacturer of the leak detector must carry out a
repair or a check.
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