SGB VLR 230, Documentation, Page: 8 / 45

VACUUM LEAK DETECTOR VLR ..
2020-06-29 5
Alarm p<p
AE
: Alarm signal when the vacuum in the monitored system is below the switching val-
ue "alarm ON".
NOTE: If an alarm probe should occur following this alarm signal, the alarm probe has priority!
(i.e. the alarm probe is displayed. Once the cause for this has been eliminated, the Alarm p<p
AE
will be displayed again.) The audible alarm signal is not given, but the other LED blinks accord-
ing to the table.
Alarm probe: See Alarm p<p
AE
Alarm solenoid valve: Is triggered when the solenoid valve has an electrical defect.
Device malfunction: Is displayed if a fault should occur on the PCB.
3.5.2 Operating functions via buttons
•
Switch off audible alarm signal:
Press the "mute" button briefly once, the audible signal is switched off, the red LED blinks.
If the button is pressed again, the audible signal is switched back on.
This function is not available during normal operation and in the event of a malfunction.
•
Testing the optical and audible alarm signal
Press the "mute" button and keep it pressed (approx. 10 seconds), the alarm signal is trig-
gered until the button is released again.
This scan is only possible if the pressure in the system has exceeded the "alarm OFF" pres-
sure.
•
Scanning the tightness of the system monitored
Press the "mute" button and keep it pressed until the signal lamp "alarm" blinks quickly after
approx. 5 seconds, then release the button. The "alarm" signal lamp displays a value for
tightness on the basis of the number of blinks (see chapter 6.4.5)
10 seconds after this value has been displayed the signal lamp returns to normal operation.
The leak detector must have carried out at least 1 automatic post-feed interval in normal op-
eration (i.e. without external assembly pump) to achieve a valid statement.
•
Zero point adjustment
Three way valve 21 in position II.
Press the "mute" button and keep it pressed until the "alarm" signal lamp blinks quickly after
approx. 5 seconds, then release the button. Press the button again immediately and then re-
lease it again. Adjustment is confirmed by 3 optical and audible signals.
Before repeating zero point adjustment the "pump OFF" switching value must be reached.
VLR .. /E ONLY
•
Start-up (opening the solenoid valves)
Press the "start-up" button and keep it pressed for approx. 5 seconds until both red signal
lamps light up. The solenoid valves are opened, the pump starts to run.
If this button is kept pressed longer than 10 seconds, the alarm signal is generated. Shortly
after the button is released the alarm signal triggered is deleted again.
For information about activating or deactivating the solenoid valves, refer also to chapter
4.5.1