QUARTERLY SCBA PracticePart 1
MSA FIREHAWK HP 4500psi SCBA
Developed by Jon Bacon
PREPARATIONPrint SCBA Skill Sheet
OBJECTIVES
Properly DON PPE Utilizing Skill Sheet
OBJECTIVES
Explain and Demonstrate use of the following SCBA Components:
HUD & LED Light PatternsVoice AmplifierBYPASS ValveICMTxR All Buttons and Modes
HUD & LED LIGHT PATERNS
4 Green Lights 76-100% Full3 Green Lights 51-75% Full2 Yellow Lights 26-50% Full1 Red Light 0-25% Full
HUD & LED LIGHT PATERNS
1 Yellow Flashing Light= HUD Low Battery
2 Yellow Flashing Lights = Transmitter Low Battery (ICMTxR)
Yellow Alternating Single & Double Flashing Lights
= Both HUD & Transmitter Low Battery
HUD & LED LIGHT PATERNS
1 Orange LED= PASS Pre-Alarm
Alternating Red/Orange LED= Evacuation Signalwill be in conjunction with the running man on your ICMTxR readout screen
Clear Command Voice Amplifier
One On/Off ButtonRed Light Indicates OnIntrinsically SafeHold Radio Lapel MIC 1” Away
BYPASS VALVE
BYPASS VALVE
Check the MMR bypass valve operation
• Grasp the red knob and turn it counter-clockwise
• Listen and feel for airflow• One complete turn is fully open• Return bypass to the closed position by
turning the red knob clockwise until closed
ICMTxR Buttons and Modes
Manual Pass Alarm
Reset Button
Mode Button
Thermal Sensor
ICMTxR Green Mode Button
Pressing the Green Mode button once will momentarily refresh the display and backlight the ICMTxR
While the display is still lit, pressing the mode button (green) again will toggle the display between current cylinder pressure and calculated remaining pressure time
ICMTxR Green Mode Button
The remaining pressure time displayed is based on your average breathing rate over the last three minutes.
Breathe faster: less time on displayBreathe slower: more time on display
Continuous Operations Mode ON
The Continuous Pressure Mode can only be activated when the system is pressurized
In Continuous Operations Mode, the life of the batteries in the Receiver will be shortened
The Continuous Operations Mode will deactivate if a low battery is present
Continuous Operations Mode ON
To activate the Continuous Pressure Mode:1. Push the top mode button (green) on the ICMTxR
Unit and hold button in for 3 seconds. 2. Once LED’s lights come on, release button.
Receiver will show air cylinder pressure level. 3. LED lights will stay on to show air cylinder
pressure level drop.
Continuous Operations Mode OFF
To deactivate the Continuous Pressure Mode:
1. Push the mode button (green) on the ICMTxR Unit and hold the button in for 3 seconds.
2. LEDs will revert to Automatic Mode showing only air cylinder pressure status at each 25% increment of full cylinder pressure.
3. The Heads-Up Display System will automatically turn itself OFF, approximately 60 seconds after the apparatus is depressurized. (A single red LED light will flash during this time).
Reset Button
Upon returning to fresh air, close the cylinder valve completely and release all pressure from the system using the bypass valve. When the pressure falls below 200 psig, turn the device off by pressing the (Yellow) reset button 2 times in rapid succession.
The ICMTxR Unit will beep 1 time when the button is pressed once. Pressing the (Yellow) button a second time will then sound three beeps (“bee-bop-bop”) to indicate that the unit is turned off. The lights will also stop flashing.
Thermal Sensor
Thermal Indicator
Thermal Sensor
Thermal AlarmThis chart shows the ICMTxR Unit thermal alarm activation curve. The thermal alarm sounds if the exposure exceeds the curve.
The alarm will self-cancel depending on the severity of conditions. This may occur even though the temperature is above the thermal curve.
Research has shown that classroom training is not adequate to save your
life when things go bad
GO OUT AND PRACTICEHOLD EACH OTHER ACCOUNTABLE