PRESSURE LEAK DETECTOR DLR-P ..
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7. Functional Check and Maintenance
7.1
General
(1) If the leak detection system has been properly installed and is
free of leaks, trouble-free operation can be assumed.
(2) Frequent switching on or continuous running of the pump indi-
cates leaks, which should be corrected within a reasonable time.
(3) In the event of an alarm, determine the cause and fix it quickly.
(4) The leak detector must be disconnected from power for any re-
pairs to be performed on the leak detector.
(5) A loss of power is indicated by the "Operation" signal lamp going
off. Alarm signals are triggered via the voltage-free relay contacts
(if used for alarm transmission) if contacts 11 and 12 were used.
After the power loss, the green signal lamp lights up again and
the voltage-free contacts no longer generate an alarm (unless the
power loss has caused the pressure to drop below the alarm
pressure).
(6) At regular intervals, the operating company must
a) check functioning of the operating lights
b) check consumption of the dry filter (used material
– color
change from orange to dark green or colorless, or from dark
blue to pink
– needs to be exchanged or regenerated).
7.2
Maintenance
o
Maintenance work and functional checks must be performed by
trained personnel only
7
.
o
Once a year to ensure functional and operational safety.
o
Test scope according to section 7.3.
o
Compliance with the conditions according to sections 5 and 6
must also be tested.
o
Comply with explosion regulations (if required), e.g. BetrSichV
(and/or directive 1999/92/EC and the laws of the respective
member states resulting therefrom) and/or others.
7.3
Functional Check
The functional and operational safety tests must be performed:
o
after each commissioning
o
in accordance with the time intervals listed in section 7.2
8
o
each time a malfunction has been corrected
7
For Germany: Technical service according to water law with expertise in leak detection systems
For Europe: Authorization by the manufacturer
8
For Germany: In addition, national laws apply (e.g. AwSV)
Functional Check and Maintenance