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2. Evacuation
a) To send an evacuation message to all logged-in respirator us-
ers, the Base Station operator must press and hold the “EVAC”
button on the Base Station and then choose “ALL-CALL” from
the menu on the display. The “EVAC message will be sent to
all logged-in respirator users.
b) To send an evacuation message to only selected respirator
users, the Base Station operator uses the scroll buttons to move
up and down the list of logged-in respirator users and presses
the “EVAC” button when the selected users are highlighted in
the display.
c) The respirator users who receive the “EVAC” message must
press the RESET button on the Control Console to acknowl-
edge the message.
d) The Base Station listing of logged-in users will display “CONF”
with each respirator user who has responded to the “EVAC”
message.
3. Air Supply Monitoring
a) When the air supply cylinder reaches one-quarter of full pres-
sure, the alert sound will occur and the Control Console will
display “LOW AIR”. A low air signal will be sent to the Base
Station within ten seconds. This end of service time indicator
(EOSTI) alarm cannot be silenced by the user until the user
leaves the hazardous area and shuts down the respirator.
b) The Base Station operator must press “ACK” on the Base Sta-
tion to acknowledge the user’s low air signal.