User Manual
10
DRAFT COPY
DRAFT COPY
WARNING
KEEP THE ANTENNAS OF HAND-HELD RADIOS
AT LEAST SIX (6) INCHES AWAY FROM THE
CONTROL CONSOLE AND THE SENSOR MOD-
ULE OF THE PAK-ALERT SE + DISTRESS
ALARM WHEN TRANSMITTING. CLOSE PROX-
IMITY OF RADIO EQUIPMENT TO THE
PAK-ALERT SE + DISTRESS ALARM DURING
RADIO TRANSMISSION MAY CAUSE THE UNIT
TO MALFUNCTION. FAILURE TO RECOGNIZE
A MALFUNCTION OF THE PAK-ALERT SE + DIS-
TRESS ALARM AND TAKE THE PROPER
CORRECTIVE ACTION MAY RESULT A NON-
WORKING DISTRESS ALARM WHICH WILL NOT
SOUND IF THE USER STOPS MOVING AND
LEAD TO SERIOUS INJURY OR DEATH.
WARNING
BE AWARE OF THE POTENTIAL EFFECT OF
RADIO TRANSMISSIONS FROM BASE STATION
OR TRUCK MOUNT RADIOS WHEN USING A
RESPIRATOR WITH THE PAK-ALERT SE + DIS-
TRESS ALARM. CLOSE PROXIMITY OF RADIO
EQUIPMENT TO THE PAK-ALERT SE + DIS-
TRESS ALARM DURING RADIO TRANSMISSION
MAY CAUSE THE UNIT TO MALFUNCTION. FAIL-
URE TO RECOGNIZE A MALFUNCTION OF THE
PAK-ALERT SE + DISTRESS ALARM AND TAKE
THE PROPER CORRECTIVE ACTION MAY RE-
SULT A NONWORKING DISTRESS ALARM
WHICH WILL NOT SOUND IF THE USER STOPS
MOVING AND LEAD TO SERIOUS INJURY OR
DEATH.
DETECTING AND AVOIDING
RADIO FREQUENCY INTERFERENCE
When any electronic device is adversely affected by radio waves, Radio Fre-
quency Interference (RFI) is said to have occurred. All electronic devices like
the PAK-ALERT SE + distress alarm may be subject to the effects of RFI.
Radio transmissions from the antennas of radios including those used by fire
fighters, police and other public safety related personnel may produce RFI in
the PAK-ALERT SE + distress alarm. RFI may occur while the radio is trans-
mitting if the respirator equipped with the PAK-ALERT SE + distress alarm is
in close proximity to a base station or high-powered vehicle mounted radio,
or if the antenna of a personal portable hand held radio is touching or within
six (6) inches of the Control Console or Sensor Module of the PAK-ALERT
SE + distress alarm. See FIGURE 5.
Be aware of the symptoms of RFI. A PAK-ALERT SE + distress alarm af-
fected by RFI may temporarily give false indications such as the sudden
sounding of the loud continuous three-tone chirp of the full alarm. In some
instances the lights on the control console may flash without sounding the
alarm. In rare circumstances, an alarm which was sounding may stop.
If the PAK-ALERT SE + exhibits any of the symptoms of RFI, identify the
source of the RFI and do the following:
– If the symptoms of RFI occur when standing near a base station trans-
mitting antenna or a truck mounted radio antenna, move away from the
antenna until the symptoms stop.
– If the symptoms of RFI occur while transmitting on a hand-held radio,
move the radio away from the PAK-ALERT SE +.
CHECK THE CONTROL CONSOLE AND BE CERTAIN THE GREEN LIGHT
IS FLASHING NORMALLY WHEN THE INTERFERENCE STOPS, REGARD-
LESS OF THE SOURCE.
In normal usage with the air cylinder open, the PAK-ALERT SE + distress
alarm will typically resume normal operation after experiencing RFI.