PRESSURE LEAK DETECTOR DLR-P ..
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4.6.2 Function "Turn off audible alarm signal"
Shortly press "mute" button once, audible signal turns off, the red
LED blinks.
Pressing the button again will turn the audible signal on.
This function is not available during normal operating conditions and
malfunctions.
4.6.3 Function "Testing the optical and audible alarm signal"
Press and hold the "mute" button (about 10 seconds). The alarm will
be triggered until the button is released.
This inquiry is only possible if the pressure in the system has exceed-
ed the "Alarm OFF" pressure.
4.6.4 Function "Tightness inquiry"
Press and hold the "mute" button until the signal lamp is blinking rap-
idly, then release it. The display shows a value for the impermeability
(103, on the version with stainless steel housing). The same value is
indicated by the number of times the “Alarm” signal lamp flashes.
This display disappears after 10 seconds and the current vacuum in
the system is displayed again.
For the "Tightness inquiry" function, the leak detector must have per-
formed at least 1 automatic refilling interval in normal operation (i.e.
without external filling, e.g. by an installation pump) to achieve a valid
statement.
This inquiry is recommended before performing a regular functional
check of a leak detector. In this way, it is possible to estimate imme-
diately whether it is necessary to look for leaks.
Number of flash signals
Assessment of tightness
0
Very tight
1 to 3
Tight
4 to 6
Sufficiently tight
7 to 8
Maintenance recommended
9 to 10
Maintenance urgently recommended
The smaller the above value, the tighter the system. The significance
of this value depends also on temperature fluctuations and should
thus be considered a reference point.
(103
)
Design and Function