User's Manual

Page 13 of 40
P/N 595166-01 Rev A 1/09
DRAFT COPY
USER ACCOUNTABILITY FUNCTIONS
From the User's standpoint, the primary accountability functions of
the SEMS II equipment are Personal Alert Safety System (PASS)
Distress Alarm, the EVACUATION Signal, and the WITHDRAW
Signal.
1. When the PASS Distress Alarm is activated to full alarm, the SEMS II
PDA Portable Unit will send a signal to the Base Station. Activation of
the full alarm can be either by manual activation of the user pressing the
RED Manual Alarm Button, or by automatic activation from lack of user
movement. The PASS symbol will ash RED quickly. When the Base
Station operator acknowledges the message, the PASS symbol will ash
RED slowly.
2. The EVACUATION Signal is sent from the Base Station to the SEMS II
PDA Portable Unit. It can be handled one of two ways:
a) All-Call Signal: The Base Station will send a signal to all SEMS II PDA
Portable Units logged on to it. When received, the Control Console
will sound an audible signal and the “EVAC” symbol will ash RED
quickly. Every respirator user must acknowledge this signal by pressing
twice the yellow RESET button on the Control Console. After the Base
Station acknowledges, the “EVAC” symbol will remain ashing slowly
until user leaves hazardous area and shuts down the respirator.
b) Selective Evacuation Alarm: The Base Station will send a signal to only
selected units logged on to it. When received, the Control Console will
sound an audible signal and the “EVAC” symbol will ash RED quickly.
The selected respirator user must acknowledge this signal by pressing
twice the yellow RESET button on the Control Console. After the Base
Station acknowledges, the “EVAC” symbol will remain ashing slowly
until user leaves hazardous area and shuts down the respirator.
3. The user selects the WITHDRAW Signal to inform the Base Station that
the user is withdrawing from the hazardous atmosphere. The user presses
and holds the blue “WITHDRAW” button on the Control Console for at
least two seconds. The "EVAC" icon on the console will ash YELLOW
quickly and the WITHDRAW message appears on the Base Station. After
the Base Station acknowledges, the “EVAC” symbol will remain ashing
slowly until user leaves hazardous area and shuts down the respirator.
4. The RANGE symbol lights as follows:
YELLOW flashing slowly-
The PDA Unit is ON but the base station has not accepted it.
GREEN flashing once every 10 seconds-
The PDA Unit is logged onto base station and has been accepted.
The PDA Unit must be able to communicate with the Base Station
at least once a minute to remain IN RANGE.
YELLOW flashing fast-
The PDA Unit is OUT OF RANGE of the base station.
5. End-of-Service Indicators
In addition to the other end-of-service indicators on the respirator, the
air supply cylinder levels are monitored by the SEMS II PDA Unit and
transmitted to the Base Station. When the cylinder reaches one quarter
of full pressure, the Console sounds a “LOW AIR” warning with an audible
alarm as well as transmitting a “LOW AIR” warning to the Base Station.
The “LOW AIR” alarm will continue to operate until the respirator is shut
down.
OPERATION AND USE OF THE SEMS II ACCOUNTABILITY SYSTEM
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