User's Manual

Page 9 of 40
P/N 595166-01 Rev A 1/09
DRAFT COPY
WARNING
USERS OF RESPIRATORS EQUIPPED WITH THE
SEMS II DISTRESS ALARM MUST BE AWARE OF
THE PROPER OPERATION OF THE DISTRESS
ALARM. FAILURE TO RECOGNIZE A MALFUNC-
TION OF THE SEMS II DISTRESS ALARM AND
TAKE PROPER CORRECTIVE ACTION MAY RE-
SULT IN SERIOUS INJURY OR DEATH.
OPERATION OF THE SEMS II DISTRESS ALARM
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PRE ALARM:
If the respirator remains motionless for more than twenty (20) seconds, the
SEMS II distress alarm will automatically sound a pre-alarm
When the pre-alarm occurs, the green ashing light on the control console is
replaced by a bright red light which ashes approximately once a second and
is accompanied by an ascending/descending audible tone which increases
in volume during the pre-alarm cycle.
If the respirator user is not incapacitated or not in need of assistance, move
the respirator to reset the pre-alarm. When reset, the ashing red light will
be replaced by the ashing green and the ascending/descending tone will
stop.
Remember that the motion sensor is in the sensor module on the respirator
backframe beneath the air cylinder. Actual movement of the respirator back-
frame is required to reset the pre-alarm. Shaking the control console will not
reset the SEMS II distress alarm .
To manually reset the pre-alarm, press and hold the reset button on the side
of the control console until three (3) quick audible chirps are heard and the red
ashing light on the control console is replaced by the green ashing light.
FULL ALARM:
If the respirator remains motionless through the twelve (12) second pre-alarm
cycle, the SEMS II distress alarm will go into full alarm. This may indicate that
the user is incapacitated or in need of assistance and can not move.
Full alarm is indicated by a loud, almost continuous 3 tone chirp from the
sensor module accompanied by the ashing red signal light on the control
console. The unit will also send a notication of PASS activation to the SEMS
II Base Station that will appear on the computer display. In addition, the Pak-
Tracker Locator transmitter in the unit will begin transmitting the unique ID
number that can be received by the Pak-Tracker Hand Held Unit.
To reset the full alarm condition, press the reset button twice. See FIGURE
4.
After the full alarm has been silenced by pressing the reset button twice, the
SEMS II distress alarm will remain activated in the automatic mode with the
green light ashing once per second. As long as the respirator is pressurized,
there must be movement of the respirator at least every twenty (20) seconds
or the distress alarm will again go into pre-alarm followed by full alarm as
described above.
MANUAL ALARM:
If the respirator user requires immediate assistance, pressing the manual
alarm button located on the front of the control console will immediately sound
the full alarm. See FIGURE 4. The manual alarm may be activated at any
time, even when the respirator is not pressurized.
If the manual alarm is activated when the respirator is not pressurized, press
the reset button twice to silence the alarm. The SEMS II distress alarm will
remain on in automatic mode. To turn the unit off, press the reset twice again
while the unit is not in alarm mode.
Remember, the loud audible alarm and ashing red light can be turned on at
any time by pressing the manual alarm button on the control console.