Audible Alarms - 3M Scott Safety Duraflow User Manual

ALARMS
There are two types of audible alarms: a battery alarm and a flow rate alarm

AUDIBLE ALARMS

The audible alarm travels through the hose and into the headtop area. You can hear
the alarm in the headtop or, if you wear an open headtop, from the hose.
When you hear an audible alarm, you must evacuate the hazardous area immediately
and do not return until the problem is solved.
LOW BATTERY ALARM: LED AND SOUNDER BEHAVIOUR
Alarm Sounds
Sounder Behaviour
5 seconds on, 2 seconds off
1 second on, 1 second off
Battery LEDs
Symbol LED Colour and Behaviour
1 green LED
1 red LED
1 red LED flashing every second
FLOW RATE ALARM: LED AND SOUNDER BEHAVIOUR
The most common cause of a flow rate alarm is an obstruction in the hose or blocked
particle filters.
When the flow rate of the PAPR drops below 160 Lpm, and the on-board control
mechanism of the Duraflow PAPR cannot correct the problem, an alarm sounds, and
the Warning LED flashes.
When you hear the first alarm, evacuate the hazardous area and do not return until
the safety issue is resolved.
Symbol LED and Alarm Behaviour
The Warning LED flashes every second until the issue is resolved.
An alarm sounds every second until the issue is resolved.
Alarm will continue until either:
• You switch off whole unit
• You resolve the airflow issue
Repeat Meaning
3 times Battery falls below 12 minutes
Constant Battery falls below 7 minutes
Meaning
>12 minutes capacity remaining
<12 minutes capacity remaining
<7 minutes capacity remaining
13 Duraflow