SGB VLR 410/E - 3.4 Switching Values; 3.5 Display and Operating Elements; 3.5.1 Signal Lamp States

VACUUM LEAK DETECTOR VLR ..
2020-06-29
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cal and audible alarm signal is triggered. If solenoid valves are connected, they close and the
pump stops.
If in place of the liquid stop valve a leak probe is mounted in the suction line in connection with
solenoid valves, the alarm signal is triggered when leak liquid reaches the leak probe. This
closes the solenoid valves and the pump stops.
3.4. Switching values of the leak detector in mbar
NOTE: The leak detector with the lowest alarm pressure for the respective application should be
used whenever possible (lower component wear)
Type
alarm ON
Pump OFF
Use on Group:
VLR 230
> 230
< 360
P/Q
VLR 330, VLR 330/E
> 330
< 450
P/Q
VLR 410, VLR 410/E
> 410
< 540
P/Q
VLR 500, VLR 500/E
> 500
< 630
P/Q
VLR 570, VLR 570/E
> 570
< 700
P/Q
VLR .. - .. (/E)
Special switching values agreed between SGB and customer
The measured switching value for "alarm OFF" has to be at least 5 mbar smaller than the
measured switching value for "pump OFF".
The measured switching value for "pump ON" has to be at least 15 mbar bigger than the meas-
ured switching value for "alarm ON".
3.5. Description of the display and operating elements
3.5.1 States of the display elements (signal lamps)
Signal lamp
Opera
ting state
Start-up
Start-up, alarm acknowledges
Alarm, vacuum below the "alarm ON" level
Alarm, as left
-
hand column, acknowledged
Alarm probe
Alarm probe, acknowledged
Alarm sol
enoid
valve
Alarm solenoid valve, acknow
l-
edged
Device malfun
c-
tion
OPERA-
TION: green
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ALARM:
red
OFF
BLINK
ING
BLINK
ING
ON
BLINK
ING
OFF
OFF
ON
BLINK
ING
ON
3
ALARM 2
4
:
red
OFF
BLINK
ING
BLINK
ING
OFF
OFF
ON
BLINK
ING
ON
ON
OFF
Description:
Start-up: If the alarm is acknowledged as the pump is being put into operation, an optical dis-
tinction is not made, the audible signal is on or off depending on the button position. When the
switching value "alarm OFF" has been exceeded, the audible signal is always off.
3
The button "mute" is without function
4
Only applies to VLR ../E