SGB DLR-GS PMN Series, Документация

Страница: 11 / 36

OVERPRESSURE LEAK DETECTOR DLR-GS ..
10/09/2014
- 8 -
(4) Once the pneumatic connections have been made, connect the electrical supply.
(5) Check that the signal lamps for "Operation" and "Alarm" light up and that the acoustic alarm
signal sounds; if necessary switch off the acoustic alarm.
(6) Pressure build-up via device shown in drawing P-115 520
Note:If pressure does not build up even though the gas canister is connected, then the leak must be
located and rectified (you may need to check that the setting on the pressure reducer is correct).
IMPORTANT NOTE: The display screen on the leak detector does not show a reading until the
pressure reaches 150 mbar.
(7) During the entire pressure build-up, make sure that the test pressure of the interstitial
space is not exceeded.
(8) Functional test in accordance with section 6.4.
5.2. Changing the pressure level
(1) Switch positions 1-9 are for selecting the pressure level.
(2) Switch positions for the pressure levels (switches 1 to 9)
are shown in Appendix B for each pressure level.
6. Operating instructions
6.1. General notes
(1) It can be assumed that the system will work correctly without any problems if the leak
detection system is installed correctly without leaks.
(2) Even very small leaks will trigger an alarm.
(3) Explosion protection requirements must be satisfied (where necessary), such as laws on
the basis of the European Directive 1999/92/EG and/or other applicable codes.
(4) If an alarm is triggered, locate and rectify the cause quickly.
(5) Disconnect the supply voltage to the leak detector whenever performing servicing work on
it.
(6) Interruptions in the power supply are indicated by the "Operation" signal lamp going out.
Alarm signals are sent out via the potential-free relay contacts (if used for alarm
forwarding).
After the interruption in the power supply, the green signal lamp comes back on and the
sending of the alarm signal via the potential-free contacts is cancelled (unless the pressure
has dropped below the alarm pressure while the power supply was interrupted.)