User manual

System and Control Options
Liebert
®
Liqui-tect
®
30
6.3.6 Set Up Sensitivity for Contamination Detection
Each zone may be set up with a sensitivity level at which
contamination on the cable is detected. Examples are construction
debris and dust.
• The most sensitive setting is 20 μA—light contamination will
trigger an alarm.
• The least sensitive setting is 300 μA. This setting requires heavy
contamination to activate an alarm.
Increase the setting if nuisance alarms occur.
• From the Setup Zone 1 Menu, choose Contaminated, as shown above right, and press Enter ↵.
• The Contaminated Detection Sensitivity screen displays the value for detection of contamination
(in the example at right,
50 UA, where UA represents μA or microAmps):
• To change the value, press and hold one of the arrow keys
↑↓ to scroll through the numbers
20-300.
• Press Enter ↵.
6.4 Setup System - Setup ZN2 Zone 2
The Liebert Liqui-tect panel has two independent zones—ZN1 and
ZN2—that may be configured individually. Each zone can monitor up
to 5,000 ft. (1524m) of leak detection cable.
To configure the second zone:
• In the Setup System Menu, choose Setup ZN2 Zone 2 (see above
right).
• Follow the same procedures used in setting up Zone 1, as
described in the previous section, 6.3 - Setup System - Setup
ZN1 Zone 1.
NOTE
Do not set this setting greater than the sensitivity for water
detection setting—for example, if the water detection setting is
50 μA, do NOT set the contamination sensitivity level at 60 μA,
or any value greater than 50 μA. If the contamination setting is
greater than the water detection setting, contamination alarms
will never occur.
NOTE
The setup options are identical for both zones, except that the
name of the zone differs.
Setup Zone 1 Menu
SETUP ZN1 ZONE 1
CONNECTED: Y
LABEL: ZONE 1
↑↓=NEXT ↵=SELECT
UNITS: FT
AUTO CALIBRATE
WATER DETECT:150 UA
> CONTAMINATED:050 UA
Contamination Detection
Sensitivity
CHANGE SENSITIVITY
FOR CONTAMINATED
50
UA
↑↓=SELECT ↵=END
Setup System Menu
SETUP ZN1 ZONE 1
> SETUP ZN2 ZONE 2
SETUP ALARM OUTPUTS
↑↓=NEXT ↵=SELECT
SETUP REALARM DELAY
SETUP MAPMODE
SETUP SYSTEM INFO
Setup Zone 2 Menu
SETUP ZN2 ZONE 2
> CONNECTED: N
LABEL: ZONE 2
↑↓=NEXT ↵=SELECT
UNITS: FT
AUTO CALIBRATE
WATER DETECT:150 UA
CONTAMINATED:050 UA