Labconco Guardian 500 User Manual
LABCONCO 500
GUARDIAN AIRFLOW MONITOR
Operating and Instruction Manual
Model: Guardian 500
• Airflow Alarm
• Sash Alarm
• External Alarm
• Setback function
Used for alarm monitoring on
Fume Hoods
22/06/09
1
OPERATOR DISPLAY PANEL
Built in Airflow sensor
LED indication & Mute
button
LED indication and Alarm Set
Potentiometer
2
1.0 Connection details :-
SASH HIGH
PROXIM ITY SWIT C H
(O PTIONAL)
SAS H HIG H
MICRO SWITCH
(O PTIONAL)
blu
blk
brn
RELA Y
SWITC H
TEL
ALARM DISABLE
VOLT FREE INPUT
EXTERN AL ALARM
VOLT FREE INPUT
LOW AI R
SASH
WARNIN G
C N O NC 0 12 SW
REFER TO INSTALL ATION
INSTRUCTIONS BEFORE
CONNECTING
C NO C NO
EXTERNAL
ALARM
ALAR M
DISABLE
- +
12VDC
POWER
SUPPLY
HSE
120V / 12 V D C
Plug – in power adap ter for 120V
socket
3
1.1 General Description
All systems comprise of the following components :-
1 – Guardian 500 Alarm unit,
1 – AC power supply
1 – Inner sidewall adaptor
If the Sash Alarm System option is included there will also be a sash micro switch or proximity
switch.
Operator Features
Normal Airflow - Green LED (Not flashing) will be displayed if the airflow is
greater than the Low air alarm point.
Low Airflow - Red LED (flashing) will be displayed if the airflow is lower
than the Low air alarm point.
Sash High - Amber LED (Flashing) will be displayed when the Sash is raised
above the max safe working opening.
Audible Alarm -- the Audible alarm will sound ( can be muted ) in the Air Low
and the Sash High alarm condition
Night Set-back -- when the Night Setback input is activated the Audible alarm
will be muted and the Setback LED will illuminate.
External Alarm -- when the External Alarm input is activated the Audible alarm
will sound and the External Alarm LED will illuminate.
--- the alarm has the following operator features :-
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