14In-Service Training: Orientation Mask selection and fitting Documented mask fit testingAssign masks to firefightersPerformance objectivesAdd air packs to apparatus
15Terminology: ANSI - American National Standards Institute APR - air purifying respiratorAudi-Alarm - MSA bell alarm at base of pack, activates at 25% cylinder volumeHUD - Heads Up DisplayICM or ICMTX* - Integrated Computer Module with pressure gauge and Redundant Alarm.*No pressure gauge on TX units.
16Terminology, cont’dIDLH - atmosphere Immediately Dangerous to Life and HealthMMR - Mask Mounted Regulator (also referred to as 2nd stage regulator)NFPA - National Fire Protection AssociationNIOSH - National Institute for Occupational Safety & Health
17Terminology, cont’dRedundant Alarm - ICM 2000 w/gauge or ICMTX w/out gauge.Transfill - the process of sharing air via the URC from a donor scba (2,000psi+) to a receiving scbaURC - Universal Rescue Connection
24COMPONENTS Seven Major Sub-Assemblies First Stage Regulator Second Stage RegulatorAir CylinderAudi-larmCarrier and HarnessFacepieceRedundant Alarm
25FIRST STAGE REGULATOR Two versions exist: Standard and PR14, both perform the same functionStandardPR14The first stage regulator is a “balanced-type” pressure reducer that keeps the pressure in the mask-mounted regulator at approximately 80 psig throughout the entire operating pressure range of the cylinder. Regulator has a redundancy feature to minimize the possibility of first stage failure.
26Second Stage Regulator MMR second stage regulator shown in belt holster position. Regulator is Pressure Demand.This is a pressure-demand regulator, which keeps a positive pressure in the face piece at all times. For regulator failure remove, cover the outlet on the face piece with nomex and exit.
27AIR CYLINDER Green band on cylinders indicates High Pressure (4500psi) Carbon wrapped cylinders are required to be hydrostatically tested every 5 years. Cylinders that are past due for their hydro test should be taken out of service. Filling should take place in a fragment proof fill station. Breathing air quality is tested every quarter.Cylinders should be re-charged ASAP. Cylinders should not be stored partially charged for two reasonsIf used partially charged, the duration of the SCBa is reduced.The pressure relief device is only designed to protect a fully charged cylinder from the effects of a fire. Never carry by the handwheel.Green band on cylinders indicates High Pressure (4500psi)Yellow bank on cylinders indicates Low Pressure (2216 or 3000psi)
28Audi-larmThe audi-larm audible alarm rings when there is approximately 25% of the SCBA’s rated service time remaining or 1175psig ICM/Heads up display also. When the bell rings, you have approximately 11 minutes of air left! If alarm sounds both members of the team should exit.
30FacepieceBatteries! Don’t submerse, Don’t store with net over face piece. In the event your face piece fails, you should remove your pace piece and breathe directly from the regulator.
31Redundant Alarm or PASS device ICM 2000 SeriesICM TXIf the user is motionless for approximately 20 seconds, the ICM Tx unit enters pre-alarm During pre-alarm, the device sounds 3 progressively louder tones and the RED LED on the ICM tx unit flashes slowly. Also during pre-alarm, an ORANGE LED will be displayed in the HUD receiver. Movement of the unit cancels the pre-alarm.If the user remains motionless for 30 seconds the ICM Tx enters full alarm, During full alarm, The PASS repeatedly sounds two high pitched tones followed by a buzz. During full alrm, the RED LED on the ICM Tx unit also flashes rapidly.The ICM Tx unit can be set into full alarm at any time by pressing and holding the ALARM Button.The ICM Tx has three controll buttonsThe RESET/OFF (yellow) button resets the device from full alarm mode. It also shuts the unit off after the cylinder valve is closed and all air pressure is bled from the unit.The center lighted ALARM button (GREEN/RED) activates the full alarm mode with or without air pressure.The top MODE button (green) will refresh the receiver display, set the receiver to continuous mode, and change the ICM Tx unit digital display mode between pressure remaining and calculated service life remaining.The PASS function uses RED and GREEN light-emitting diodes (LED’s) behind the alarm button to display its status visually:GREEN LED’s start to flash when the cylinder valve is opened and shows that the device is operational.RED LED’s flash slowly when the device is in pre-alarm and flash rapidly when the device is in full alarm, RED LED’s also flash when the SCBA pressure is at or below 25% of the rated pressure.
365. Fasten the waist strap, and pull tight for a snug fit 5. Fasten the waist strap, and pull tight for a snug fit. The weight is designed to be carried on the waist, not the shoulders.
376. As you straighten, pull the strap tabs out and adjust for a comfortable fit. 7. The shoulder and waist strap ends must be tucked in and lay flat across the body.
38DONNING the FACEPIECE1. Loosen the neck straps so the end-tabs are at the buckles.
39DONNING the FACEPIECE 2. Insert your chin into the facepiece. Note: harness may take a “memory” if stored over mask.3. Pull the harness “net” over the crown of your head.
404. Tighten the neck straps; if necessary tighten the temple strap adjustments. Tuck in the straps so they lay flat across the head.
41Facepiece fit checkFirst, check the inhalation valve. Inhale. If you do not receive sufficient flow of air, do not use the facepiece. The facepiece must be repaired or replaced.
42Facepiece fit checkTo check for facepiece fit, hold your hand over the inlet and inhale. Hold your breath at least 10 seconds.The facepiece should collapse and stay collapsed against your face. If it does not, readjust the facepiece and test again. If this does not correct the leak, do not use the facepiece.
43Test the exhalation valve, take a deep breath and hold it Test the exhalation valve, take a deep breath and hold it. Block the inlet with the palm of your hand and exhale. If the exhalation valve is stuck, you may feel a heavy rush of air around the facepiece. You may need to exhale sharply to open the valve if this does not release the valve, do not use the facepiece
45Open the Cylinder Valve fully If air is flowing, push in the slide button on the MMR to stop air flowListen for any sound of hissing or popping from the Audi-larm Alarm or quick fill valves. If heard, place out of service.Damaged or missing o-ring
46As the pressure rises from 50 to 200 psig, both visible and audible alarms activate automatically, indicating that the alarms are functional. When the system is fully pressurized, the alarms enter the Monitor(normal) mode.
47WarningIf the Audi-larm fails to ring, ICM, or HUD system fails to light and tone, place the SCBA out of service. All gauges should be within 225 psig of each other at 4500 psig. If not, place the SCBA out of service. Failure to follow these precautions may result in serious personal injury or death.
48Push the release buttons to remove the MMR from the standby belt mount
49Installing slide Mask Mounted Regulator Grasp regulator and orient regulator so that the red bypass knob is pointing to the right and slide connector is on top.
50Installing slide Mask Mounted Regulator Slide regulator onto rail (fast track) of facepiece cover. Slide regulator down the rail until regulator stops.
51Installing slide Mask Mounted Regulator Insert regulator into facepiece by pushing upward.Check proper engagement by pulling on the regulator to ensure the regulator is secure.
64To loosen the shoulder strap, grasp the release loops To loosen the shoulder strap, grasp the release loops. Push them out and away from your body.Slip your right arm out of the shoulder pad first, then remove the harness.
65Changing Cylinders1. Be sure there is no pressure in the system. Disconnect theAudi-larm coupling nut.2. Lift and turn the latch wing to loosen the the cylinder clamp.3. Slide out the empty cylinder and install one that is fully charged, ensure that the cylinder band latch is in the proper slot. Make sure lock tab on the carrier is fully engaged In the cylinder band slot.4. Slide the new cylinder in the carrier with gauge out, turn latch wing.Push the latch wing toward the back plate, locking in place.
665. Ensure the cylinder is secure, to check, attempt to pull the cylinder down and out, away from carrier.If the cylinder feels loose, retighten and recheck.6. Check that the O ring is inside the coupling nut. If the O ringis damaged it MUST be replaced.7. Thread the coupling onto the cylinder valve, hand tight.
67Cold Weather Operations To keep moisture from entering the MMR, stow the MMR in the stand by belt mount holder.
68Cold Weather Operations Watch for ice build up on the release buttons and bypass valve. Check for proper operation prior to entering a hazardous atmosphere.
69Cold Weather Operations When replacing cylinders, be careful to prevent moisture from entering the system. Water can contaminate the system and freeze.
70Cold Weather Operations Thoroughly dry the facepiece and MMR after cleaning.
71Quick Fill System Operation The Quick Fill system lets MSA airmask users refill and transfill air cylinders while the SCBA is worn, without the need to remove the air cylinder, even IN IDLH atmospheres.
72Emergency Breathing Support System Normal UseIf available, can quickly refill from secondary compressed air source to 4500 psi.Emergency Breathing Support SystemTransfill from Donor SCBA
73Transfill from a Secondary Air Source Key PointsLocate transfill adaptor on air source.Remove the rubber dust covers from fittings.Attach hose to the male fitting by pushing thefemale fitting onto the male fittinguntil it snaps in place.Transfilling begins upon connection.Compare gauge readings, disconnect by pullingback the gray sleeve.Immediately reinstall the dust cover.Return to service.
74Emergency Breathing Support System Key PointsDonor SCBA should or greater than 2000 psig +Remove the emergency hose from pouchRemove dust covers from the hose fittings.Remove dust cover from male connectionPush the female fittings from the hose onto the malefittings on SCBA until they snap into place.Visualize gauges, after seconds the pressurewill be equal.Disconnect the hose from the SCBA’s, reinstall the dustcover and return to fresh air.
75Cleaning and Disinfecting Water temperature NOT above 120degrees.Use supplied cleaning solution to scrub parts, taking care to not immerse regulator or ICM.Rinse, using as little water as possible.Let the unit AIR dry.Masks need to be cleaned after each use.
76Cleaning and Disinfecting Remove HUD receiver and Voice amp before startingWater Temperature below 120 degreesRinse large debris off with waterWash with disinfectant provided at stationsRinseConfidence Plus- 1 oz in a gallon of wateror use spray bottles provided.Rinse with waterTowel and AIR DRY- hung upside down.
77Inspection Don pack per procedures Inspect Mask Cylinder and Redundant Alarm GaugesAudible AlarmRedundant Alarm and Pressure GaugeHigh Pressure HoseSCBA’s not in proper working order should be taken out of service. SCBA’s should be checked after each use, weekly, and by each oncoming shift.