TEL AFA1000/BLD, Installation & Operating Manual

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Version 01 / p.19
AFA1000/BLD Pressure Controller
Installation & Operating Manual
3.1 Pressure Functions
The AFA1000/BLD Pressure display can be set up using the pushbutton menus to display
airflow in units of m/sec or fpm and can also be set to show plain text “Air Safe” & “Air Fail”
only
The AFA1000/BLD has 3 programmable airflow alarms.
Safe pressure
• Display reading above Low pressure alarm level and below High pressure alarm level
• Green LED on
Warning pressure
• Display reading below Warning level and above Low pressure alarm level
• Amber LED on
Low pressure
• Meter reads below Low pressure alarm level for longer than the delay time
•
LOW PRES. toggles on / off with display
• Red LED on ( Flashing )
• Audible alarm sounds -- can be muted via Enter pushbutton
• Low pressure relay operates ( if configured )
Reset: -- when pressure rises above Low pressure alarm level (including pre-set hysteresis)
the Low pressure alarm resets automatically
High pressure
If configured:
• Meter reads above high pressure alarm level for longer than the delay time
•
HIGH PRES toggles on / off with display
• Audible alarm sounds – can be muted via Enter pushbutton.
Reset: -- when pressure falls below High pressure alarm level (including pre-set hysteresis)
the High pressure alarm resets automatically
3 FUNCTIONS & OPERATION