SGB DLR-2 Series, Документация

Страница: 12 / 27

OVERPRESSURE LEAK DETECTOR DLR-2
18/01/2002 Ihr Partner für Leckanzeigetechnik
Sicherungsgerätebau GmbH, Siegen
- 10 -
(5) Repeat the procedure from items (2) to (4) for each further test valve of the pipe(s) con-
nected to this leak detector.
(6) Connect the pressure tank to coupling 6.1.
(7) Set the pressure regulating valve to nominal pressure.
(8) Open the shut-off valve on the pressure reducing device.
(9) Open shut-off cock 2.2.
(10) Pressure build-up up to nominal pressure; during the filling process, check the pressure on
the pressure reducing device (testing pressure must not be exceeded) and readjust if nec-
essary.
(11) When nominal pressure has been reached, close shut-off cock 2.2.
(12) Close the shut-off valve on the pressure reducing valve, remove the testing device from the
coupling, remove the test pressure gauge and the pressure tank from the testing device.
7.4.3 Testing the switching values
(1) Close both shut-off cocks of the testing device. Insert the test pressure gauge into coupling
51, connect the testing device to coupling 6.2 (cf. P-115 520)
(2) Set the pressure regulating valve to nominal pressure.
(3) Open the shut-off valve on the pressure reducing device.
(4) Open shut-off cock 2.1 until the alarm is triggered (optically and acoustically), note the
value.
(5) Close shut-off cock 2.1.
(6) Compare the value measured with the specification. The test is considered passed if the
measured value for "alarm ON" is greater/equal to the one specified
13
.
(7) Open shut-off cock 2.2.
(8) Pressure build-up up to nominal pressure, during the filling process, check the pressure on
the pressure reducing device (testing pressure must not be exceeded) and readjust if nec-
essary.
(9) When nominal pressure has been reached, close shut-off cock 2.2.
(10) Repeat items (7) to (9) several times if necessary until all possible pressure compensation
processes have been completed.
(11) Close the shut-off valve on the pressure reducing device, remove the testing device from
the coupling, remove the test pressure gauge and the pressure tank from the testing de-
vice.
7.4.4 Testing the air-tightness
14
13
If the pressure switch has to be readjusted, proceed according to chapter 6.2.