Dräger REGARD 39 0 Series Instructions For Use Manual page 278

6.1.3 Overrange
6.1.4 Underrange
6.1.5 Maintenance
6.2
LED
6.3 Power
Power AC-LED
278
Hold / II / 1
Acknowledge / OK
Under-range
LED
LED
A1
A3 F2 LED
A1
A2
F1
Inhibit-LED
/
LED
(20 mA) Over-range
3.8 mA –
Maintenance
A3
A3 F2
A1
A1
A2
A2
F1
F1
LED
LED
F1 F2
®
REGARD 3900