OVERPRESSURE LEAK DETECTOR
DLR-2
18/01/2002 Ihr Partner für Leckanzeigetechnik
Sicherungsgerätebau GmbH, Siegen
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Note: should the pressure not build up despite the gas bottle being connected, the leak must be lo-
cated and eliminated (if necessary check the pressure reducing device for the correct setting).
(8) It must be ensured that the testing pressure of the interstitial space is not exceeded during
the whole pressure build-up process.
(9) Functional test according to chapter 7.4.
6.2. Setting other switching values (deviation from factory settings)
(1) Determine the maximum operating pressure of the pipework (feed pressure).
(2) Calculate latest alarm triggering according to chapter 3.3.
(3) Calculate nominal pressure according to chapter 3.3
(4) Is the testing pressure of the interstitial space greater by factor 1.3 than the nominal pres-
sure by calculated under item (3) above?
If yes, proceed with item (5)
If no: check whether the nominal pressure from item (3) can be reduced, if not, then either
increase the testing pressure or reduce the feed pressure in the inner pipe and proceed
with item (2).
(5) Note the new values in the housing cover and proceed with setting as follows:
(6) Unscrew the safety pin on the pressure switch.
(7) Close both shut-off cocks of the testing device. Insert the test
pressure gauge into test coupling 51, connect pressure tank
to coupling 6.1, connect the measuring gauge to coupling 6.2
(cf. P-115 520 no. II)
(8) Set the pressure regulation valve on the pressure reducing
device to nominal pressure.
(9) Open the shut-off valve on the pressure reducing device.
(10) Open shut-off cock 2.2.
(11) Build up pressure to alarm pressures, check the pressure on
the pressure reducing device during the filling process (testing
pressure must not be exceeded) and readjust if necessary.
Shut-off cock 2.2 must be closed when the alarm pressure has been reached.
(12) Has the alarm been stopped?
If yes: continue with item (13)
If no: unscrew the setting screw on the pressure switch until the alarm
has been stopped, continue with item (13).
(13) Carefully tighten the setting screw on the pressure switch until the alarm is triggered.
(14) Open shut-off cock 2.2.
(15) Build up pressure until the alarm is stopped.
(16) Closs shut-off cock 2.2, open shut-off cock 2.1.
(17) Wait for alarm to be triggered, note and record the value and close shut-off cock 2.1
Safety pin
Setting
screw
