MSA OptimAir TL PAPR, Operating Manual

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10 Troubleshooting
Audible alarm – If an alarm sounds, look at the visible battery and flow indicator to determine the potential cause of the alarm.
If the fan LED is flashing red continue troubleshooting in the flow alarm section. If the battery LED is flashing red continue
troubleshooting in the battery alarm section in this manual. It is also possible to differentiate between the two types of alarms
by listening to the frequency of the buzzer. A flow alarm will be a single repeating beep; a battery alarm will beep twice and
repeat.
Flow alarm – A flow alarm is indicated by a single beep that is repeated along with a light illuminating the fan pictogram near
the on/off switch. Potential causes of a flow alarm:
• If cartridges have been in service too long they may be restricted or clogged causing a low flow alarm.
• Check for any potential obstructions that could be blocking the inlet holes of the cartridges (i.e. loose clothing worn by the
user or something in the work area itself.)
• If wearing a hood, inspect the hose-to-hood interface for twisting or kinking of the hood which can restrict air flow. Readjust
the hose connection to eliminate any kinking. Refer to the hood section of this manual for further instructions.
• Inspect the hose to ensure the bayonet connection is fully and properly engaged in the blower housing. A hose that is
partially removed or one that is installed incorrectly will trigger a flow alarm.
Battery alarm - A battery alarm is indicated by a repeating double beep and a flashing red LED on the battery indicator.
Potential causes for a battery alarm are:
• The battery could be drained from normal use and needs to be recharged
• If the battery is draining more quickly than usual it may be old and in need of replacement
• Contaminated contacts on the blower or battery. Inspect pins and pads and clean appropriately
NOTE: Use caution when cleaning the battery contact pads so as not to short circuit the battery.
Difficulty installing the hose in the blower – If it is difficult to install the bayonet end of the hose into the blower unit,
replace the o-ring (reorder P/N 10085084, pack of 10).
Blower unit will not turn on – If the unit does not operate:
• Ensure the battery is fully charged and the contact pins and pads are free from contaminants. The battery charge can be
checked by removing it from the unit and connecting it to the battery charger.
• Press the on/off switch and hold for 1 – 2 seconds.
OptimAir TL PAPR 49
US 10 Troubleshooting