PremAire®

INSTRUCTIONS FOR DUAL-SUPPLY MODE OF OPERATION

REGULATOR

ESCAPECYLINDER

VORTEX

MAININLETDUAL

SUPPLY

The warranties made by MSA withrespect to the product are voidedif the product is not used and ser-viced according to the instructionsin this manual. Please protectyourself and your employees byfollowing the instructions. Pleaseread and observe the WARNINGSand CAUTIONS inside. We encour-age our customers to write or callfor a demonstration of this equip-ment prior to use, or for any addi-tional information relative to useor repairs. During regular workinghours, call 1-800-MSA-2222.

TAL 106 (L) Rev. 1 © MSA 2001 Prnt. Spec. 10000005389(A) Mat. 497230Doc. 497230

THIS MANUAL MUST BE READCAREFULLY BY ALL PERSONSWHO HAVE OR WILL HAVE THERESPONSIBILITY FOR USING ORSERVICING THE PRODUCT. Likeany complex piece of equipment,the Dual-Supply from MSA willperform as designed only if usedand serviced according to theinstructions. OTHERWISE, THEPRODUCT COULD FAIL TO PER-FORM AS DESIGNED, AND PER-SONS WHO RELY ON THE PROD-UCT COULD SUSTAIN SERIOUSPERSONAL INJURY OR DEATH.

WARNING

See separate Inserts for NIOSH Approval Information (P/N 10032763/3094-50/10032761)

INTRODUCTION

NIOSH APPROVAL CAUTIONS AND LIMITATIONS

A- Not for use in atmospheres containing less than 19.5percent oxygen.

B- Not for use in atmospheres immediately dangerous tolife or health.

C- Do not exceed maximum use concentrations estab-lished by regulatory standards.

D- Air-line respirators can be used only when the respira-tors are supplied with respirable air meeting therequirements of CGA G-7.1 Grade D or higher quality.

E- Use only the pressure ranges and hose lengths speci-fied in the User's Instructions.

G- If airflow is cut off, switch to filter and/or cartridge orcanister and immediately exit to clean air.

H- Follow established cartridge and canister changeschedules or observe ESLI to ensure that cartridgesand canisters are replaced before breakthroughoccurs.

I- Contains electrical parts which have not been evaluat-ed as an ignition source in flammable or explosiveatmospheres by MSHA/NIOSH.

J- Failure to properly use and maintain this product couldresult in injury or death.

L- Follow the manufacturer's User's Instructions forchanging cartridges, canister and/or filters.

M- All approved respirators shall be selected, fitted, used,and maintained in accordance with MSHA, OSHA, andother applicable regulations.

N- Never substitute, modify, and, or omit parts. Use onlyexact replacement parts in the configuration as speci-fied by the manufacturer.

O- Refer to User's Instructions, and/or maintenance man-uals for information on use and maintenance of theserespirators.

P- NIOSH does not evaluate respirators for use as surgi-cal masks.

S- Special or critical User's Instructions and/or specificuse limitations apply. Refer to User's Instructionsbefore donning.

S - SPECIAL OR CRITICAL USER INSTRUCTIONS

1. This approval applies only when the respirator is sup-plied with respirable air through 8 to 300 feet of air-supply hose within the pressure range of 60 to 100

psig. A maximum of 12 sections of air-supply hosemay be used in making up the maximum workinglength of hose. Each section of coiled hose is consid-ered 50 feet in length (max. 6 sections).

2. An adequate respiratory protection program mustinclude knowledge of hazards, hazard assessment,selection of proper respiratory protective equipment,instruction and training in the use of equipment,inspection and maintenance of equipment, and med-ical surveillance. [See OSHA regulations, Title 29 CFR1910.134.

3. The program administrator and respirator users mustread and understand these instructions before tryingto use or service this product.

4. The PremAire Supplied-Air Respirator System willperform as designed only if used and maintainedaccording to these instructions.

5. This respirator may be used only after proper instruc-tion and training in its use as specified in OSHA regu-lations Title 29 CFR 1910.134.

6. Inspect the respirator regularly and maintain it accord-ing to the instructions. Repairs must only be made byproperly trained personnel.

7. Use only with an air source that meets ANSI(Compressed Gas Association) specifications. The airdelivered to the respirator's air-supply hose must berespirable and of a purity equal to at least QualityVerification Level (Grade) D Air of the CompressedGas Association Commodity Specification for Air G-7.1. Air pressure and flow rates must be within theNIOSH approved ranges for the device.

8. Use strictly in accordance with instructions, labels andlimitations pertaining to this device.

9. This device may not provide a satisfactory face sealwith certain physical characteristics (such as beardsor sideburns) as outlined in ANSI Z88, resulting inleakage in connection with the facepiece, which voidsor limits the protection. If such a condition exists, theuser assumes all risks of death or serious bodily injury,which may result.

10. Do not use the PremAire System for firefighting.11. Do not use the PremAire System for underwater appli-

cations.12. Thoroughly check out the respirator on receipt and

prior to use.13. Do not use compressed oxygen with the PremAire

System.

2 TAL 106 (L) Rev. 1 - 497230

TABLE OF CONTENTS

NIOSH Approval Cautions and Limitations ........................2Special or Critical User Instructions...................................2PremAire Respirator System Symbols ...............................3PremAire System Options ..................................................3Description..........................................................................5Operating Principles ...........................................................5Preparing Respirator for Use..............................................7Air-Supply Hose and Pressure Gauge................................9Inlet Pressure Gauge ..........................................................9

Interconnecting Air-Supply Hoses......................................9Checking Dual-Supply Operation.....................................11Checking Inlet Pressure....................................................11Adjusting Inlet Pressure....................................................11Using Dual-Supply Capability...........................................13Cleaning and Disinfecting.................................................15Inspection .........................................................................17Functional Checks ............................................................19

INTRODUCTION

14. Unless equipped with a pressure-demand facepieceand the Escape-Cylinder option, the PremAireRespirator MUST NOT be used and relied upon forrespiratory protection when the atmosphere containsconcentrations of contaminants which are unknown orIDLH.

15. Users must wear suitable protective clothing and pre-cautions must be taken so that the respirator is notworn in atmospheres that may be harmful to thedevice.

16. Never alter or modify this device, except as directedby MSA during installation of NIOSH approved kits.Use only MSA replacement parts. If other than theproper MSA parts are used, the NIOSH approval willbe voided.

17. Use only the listed hose lengths and air-pressurerange specified in these instructions.

Particles and contaminants can enter an air-line respi-rator system when air-supply hoses are disconnectedand/or reconnected in a contaminated atmosphere.This could result in serious injury or death dependingon the toxicity of the contaminant involved. It is theresponsibility of the user to determine the potentialrisk and to take the necessary precautions which mayinclude a requirement that NO disconnection or recon-nection of air-supply hoses be permitted in a contami-nated atmosphere. If in doubt DO NOT disconnectand/or reconnect.

18. When used at temperatures below 32˚F nosecups arerequired.

19. PremAire Respirators equipped with the Dual-Supplyoption are not designed as an emergency-escapedevice. Thus, the respirator must not be used in envi-ronments containing less than 19.5 percent oxygen, orin atmospheres classified as Immediately Dangerousto Life or Health (IDLH), unless equipped with anemergency-escape air cylinder.

PREMAIRE RESPIRATOR SYSTEM SYMBOLS

Symbols are used to direct you to other instructions,warnings and guidelines that apply to the type of option(s).It is important that you familiarize yourself with these sym-bols, along with the corresponding instructions beforeattempting to operate the respirator.

3TAL 106 (L) Rev. 1 - 497230

REGULATOR

ESCAPECYLINDER

VORTEX

MAININLETDUAL

SUPPLY

Pressure-DemandSupplied-AirRespirator(P/N 496958)

Duo-TwinCapability(P/N 818370)

Dual-SupplyCapability(P/N 497230)

Escape CylinderCapability(P/N 800808)

Vortex TubeCapability(P/N 497231)

WARNING

NOTES

4 TAL 106 (L) Rev. 1 - 497230

DESCRIPTION

DESCRIPTION

With MSA’s exclusive Dual-Supply option for PremAireRespirators, workers can increase their mobility in anotherfashion. The Dual-Supply option lets workers connectfrom one pressurized continuous air source to anotherwithout losing continuity of air flow. The advantage isimproved mobility because the worker is not bound by thelimits of only one air line throughout the work period. ThePremAire System can do this because the manifold hastwo air-supply inlets: a “MAIN” inlet and a “DUAL-SUP-PLY” inlet.

With the Dual-Supply option installed, the user mayswitch between multiple air sources. For example:

A worker may enter an atmosphere with an air-supplyhose connected to the “MAIN” inlet. When the length ofair-supply hose has reached its maximum limit, the workercan then use the “DUAL-SUPPLY” inlet and plug into asecond approved air source, such as another air linelocated nearby, and disconnect from the first. This tech-nique is known as “leap-frogging” because it gives theworker the ability to move from station to station withoutdisrupting the supply of air. This capability can be appliedin situations where a worker must climb up vertical levelsof scaffolding, providing that additional air sources arelocated along the way. Or it can be used when movingfrom room to room within a facility.

Applications where this feature can be used include haz-ardous material disposal and remediation sites whereheavy equipment operators work. The operator can entera toxic area using the cylinder transport system, and thenconnect to an air-supply hose attached to a large air tankmounted on a bulldozer or backhoe. Upon completion of

work, the worker can exit the area using a reverse proce-dure. For information on the TransportAire System andauxiliary cylinders, contact MSA or an authorized MSAdistributor. NOTE: When used with the TransportAireSystem, be sure to read all instructions, precautions andwarnings that are supplied with the system and cylinders.

For use in IDLH environments, the Dual-Supply option canbe coupled to PremAire Respirators equipped with anemergency-escape air cylinder. Escape cylinders mustonly be used for emergency egress purposes.

The Dual-Supply option may also be used in conjunctionwith the PremAire Respirator vortex tube cooling system,providing that a continuous air-supply source (such as anair compressor) is used. The TransportAire System mustnot be used with vortex tubes, as the cooling systemwould exhaust the cylinder air supply at a higher than nor-mal rate.

OPERATING PRINCIPLES

Like all PremAire Respirator configurations, the Dual-Supply option supplies air to the mask-mounted regulator(MMR) to provide respirable air to the user in a pressure-demand mode. The Dual-Supply option works on thesame principle as the PremAire Supplied-Air Respirator.Whether a worker is using the “MAIN” inlet of the mani-fold, the “DUAL-SUPPLY” inlet or both inlets simultane-ously, the respirator will provide respiratory protection aslong as the user remains connected to one of the two airsources.

5TAL 106 (L) Rev. 1 - 497230

NOTES

6 TAL 106 (L) Rev. 1 - 497230

RESPIRATOR USE

PREPARING RESPIRATOR FOR USE

To check for leaks:1. Disconnect the mask-mounted regulator from the

facepiece.2. Connect the quick-disconnect on the dual-supply air

line to the air source and pressurize within the NIOSH-approved range of 60-100 psig.

3. Place palm of hand over mask-mounted regulator out-let to block air flow from the regulator.

4. Apply leak-test solution to all threaded joints. If bub-bles indicate a leak, shut off air supply and vent allpressure from the system. Then tighten the joint(s)where leakage was indicated. Test again.

Inspecting Check ValvesInspect the check valves to ensure the “flow” arrows pointtoward the PremAire manifold. If they do not, disassembleand reverse the position of both check valves (one con-nected to the “MAIN” inlet and one connected to the“DUAL-SUPPLY” inlet or extension hose).

For dual-supply operation, two check valves must bein place: one connected to the “MAIN” inlet of themanifold and one to the “DUAL-SUPPLY” inlet. If onlyone check valve is used, breathing air may exit the“unchecked” port and not reach the user, resulting inserious personal injury or death.

7TAL 106 (L) Rev. 1 - 497230

WARNING

NOTES

8 TAL 106 (L) Rev. 1 - 497230

OPERATING PRINCIPLES

AIR-SUPPLY HOSE AND PRESSURE GAUGE

The PremAire System can be used with a wide range ofMSA air-supply hoses, which can be interconnected up toa maximum length of 300 feet. A maximum of 12 sectionsof air-supply hose may be used in making up the maximum300 feet working length of hose. MSA also offers an inletpressure-gauge assembly that enables a user to checkpressure at the inlet of the MSA air-supply hose, assuringthat the air pressure is within the NIOSH approved range.The gauge is supplied with quick-disconnect fittings toaccommodate your particular air-line system.

MSA air-supply hoses have various temperature limita-tions. DO NOT use the PremAire System wheneverambient or inlet-air temperatures exceed the limitsspecified below for each hose material.

HOSE RECOMMENDED MATERIAL TEMPERATURE LIMITS

Polyvinyl Chlorine 32˚F/120˚ FNeoprene -25˚F/212˚ FNylon -20˚F/180˚ F

INLET PRESSURE GAUGE

To ensure accurate readings, the inlet pressure-gaugeassembly must be installed at the air source.

INTERCONNECTING AIR-SUPPLY HOSES

MSA air-supply hoses can be interconnected up to amaximum length of 300 feet without voiding the NIOSHapproval. MSA offers both threaded and locking-typequick disconnects.

Locking quick-disconnects easily connect by pushing theplug and socket together. To separate, push the plug andsocket together, then pull the sleeve from the plug.

Hoses must only be interconnected with either thethreaded connector (3/4 16 UNF) or the locking-typequick-disconnects listed above.DO NOT use nonlock-ing quick-disconnects to interconnect air-supplyhoses.

9TAL 106 (L) Rev. 1 - 497230

WARNING

Air-Supply HoseO-Ring

3/4" - 16 UNF

★ Air-Supply Hose

Quick Disconnect Socket with Check Valve 476956

Air Supply Hose(3/4 - 16 UNF)

Quick Disconnect Plug 476955 (No Check Valve)

(3/4 - 16 UNF)

Air-Supply HoseO-Ring Pt. No. 455804

3/4" - 16 UNF

★Air-Supply Hose

Quick Disconnect Plug 479015 (No Check Valve)

3/4" - 16 UNF

Quick Disconnect Socket with Check Valve 479032

CEJN - Chrome

Socket and Plug Assembly 479010

{

Socket and Plug Assembly 479009

{

This typical threaded connector method can be used to interconnect sec-tions of approved air-supply hose to the PremAire System.

SNAP-TITE — Aluminum

WARNING

10 TAL 106 (L) Rev. 1 - 497230

479026

479027

DUAL-SUPPLY OPERATION

CHECKING DUAL-SUPPLY OPERATION

1. Connect an approved, pressurized air-supply hose tothe “MAIN” inlet of the PremAire manifold.

2. Don the respirator facepiece.3. Connect a second, pressurized air-supply hose to the

“DUAL-SUPPLY” inlet of the manifold and disconnectfrom the primary air source. Note: The air-supplyhoses must be connected to two different air sources.

4. After connecting the second air-supply hose to themanifold, breathe through the facepiece to ensure therespirator is providing proper air flow. If there is aproblem with the air flow, check the system’s inletpressure.

CHECKING INLET PRESSURE

Like all PremAire Respirators, units equipped with theDual-Supply option require an inlet pressure of 60 to 100psig. Before use, it is important to check the inlet pres-sure to see that it is within the NIOSH-approved range.

ADJUSTING INLET PRESSURE

Adjust the inlet pressure at the air source so that the sys-tem pressure is between 60-100 psig. If the readingchanges, adjust the pressure until the pressure gaugereads within this range.

Stop operation immediately if the system pressurecannot be brought within this range. Inspect the sys-tem for restrictions, such as a partially-closed valve ora clogged air-line filter.

11TAL 106 (L) Rev. 1 - 497230

CAUTION

NOTES

12 TAL 106 (L) Rev. 1 - 497230

USING THE RESPIRATOR

USING DUAL-SUPPLY CAPABILITY

To use the “leap-frogging” technique.1. Connect an air-supply hose, pressurized by an

approved air source, to the “MAIN” inlet of thePremAire manifold.

2. Enter the work area.3. When the first length of air-supply hose has reached

its maximum limit, connect to a second air-supplyhose (pressurized by a different, approved air source)using the “DUAL-SUPPLY” inlet of the manifold. Onlyafter the second air-supply hose has been connectedcan a worker disconnect from the first air line.

13TAL 106 (L) Rev. 1 - 497230

NOTES

14 TAL 106 (L) Rev. 1 - 497230

CLEANING AND DISINFECTING

CLEANING AND DISINFECTING

Respirators should be cleaned and disinfected after eachuse. If the facepiece is to be cleaned. The facepieceshould be cleaned and disinfected after every use. MSArecommends using ConfidencePlus® Cleaner Solution(P/N 10009971). Refer to the label for user instructions.ANSI suggests that users be trained in cleaning proce-dure.

Cleaning and disinfecting at or below 110˚F tempera-ture will avoid possible overheating and distortion ofparts which would require replacement.

DO NOT use any cleaning substances that can ormight attach any part of the apparatus.

Alcohol should not be used as a germicide because itmay deteriorate rubber parts.

If not rinsed thoroughly, cleaning agent residue mayirritate the wearer’s skin.

PREPARATION

Note: Do not force-dry the parts by placing them in aheater or in direct sunlight. The rubber will deteriorate.When the facepiece is thoroughly dry, store the facepiecein the plastic bag that it was shipped in.

1. MMR second stage regulator (bypass, shutoff button,or quick- connect buttons). Use a #4 rubber stopper(P/N 60380) in the outlet of the MMR second stageregulator to prevent water, dirt or debris from entering.

2. Inspect the entire apparatus as you reassemble it.Follow the Inspection Instructions.

3. Thoroughly dry the facepiece and regulator aftercleaning and disinfecting. The facepiece can trapwater, which could enter the regulator.

15TAL 106 (L) Rev. 1 - 497230

CAUTION

CAUTION

CAUTION

CAUTION

NOTES

16 TAL 106 (L) Rev. 1 - 497230

INSPECTION

INSPECTION

Inspect the respirator by sight and sound for normal oper-ations after it has been cleaned and disinfected. Whenany part shows evidence of damage, wear, or any otheradverse condition explained in this section, it must bereplaced and the condition corrected before the respiratorcan be used again.

Note: Replacement or repairs shall be done only by quali-fied persons, using only MSA parts designed for the respi-rator. No attempt shall be made to make adjustments orrepairs beyond the manufacturer's recommendations.Parts shall not be interchanged among devices of differentmanufacturers. MSA authorizes levels of maintenance andrepair for the PremAire Respirator System. (See usersmaintenance manual P/N 10017251.)

If there is no MSA Service Center in your area, return theunit to MSA for service. Call 1-800-MSA-2222 for instruc-tions.

DO NOT inspect the respirator before cleaning if thereis danger of contacting hazardous contaminants.Clean and disinfect first, then inspect. Failure to followthis precaution may result in inhalation or skin absorp-tion of the contaminant and cause serious personalinjury or death.

Inspect the entire apparatus after it is cleaned and disinfect-ed. ANSI Standards Z88.2 and Z88.5, describe three levelsof inspection procedures which are to be performed. Referto these documents, or to an inspection program preparedby a health professional in establishing an inspection pro-gram. Detailed repair procedures are located in PremAireUsers Maintenance Instructions.

If any of the following inspections do not functionproperly, the apparatus must be removed from service.

Component Inspection(AFTER EACH USE and MONTHLY)1. Don the respirator following the instruction proce-

dures. These steps make up the Functional Test.2. If all steps are performed successfully, remove the res-

pirator and inspect it following the steps below.3. Facepiece

a. Inspect the facepiece for rubber deterioration, dirt,cracks, tears, holes, or tackiness.

b. Check the harness headstraps for breaks, loss ofelasticity, missing buckles or straps. Check thestrap serrations for signs of wear.

c. Inspect the lens for cracks, scratches, and a tightseal with the facepiece rubber.

d. The exhalation valve must be clean and operateeasily. The valve must move off the seat and returnwhen released.

e. Inspect the facepiece coupling for damage. Alsocheck to be sure the spider gasket, O-ring, andvalve disc are present.

4. Harnessa. Inspect all harness components for cuts, tears,

abrasion or signs of heat- or chemically-relateddamage. Check that the tee nuts, washers, andscrews, if any are secure.

5. Record KeepingFollowing inspection, the date and initials of the desig-nated person should be recorded on an inspectiontag. A more detailed record of the operations per-formed can be noted on an inspection and mainte-nance log. Inspection tags and inspection and mainte-nance logs are available from MSA. When the inspec-tion data has been recorded, the apparatus is storedin a ready position.

17TAL 106 (L) Rev. 1 - 497230

WARNING

WARNING

NOTES

18 TAL 106 (L) Rev. 1 - 497230

FUNCTIONAL CHECKS

FUNCTIONAL CHECKS After Each Use and Monthly1. Check that the regulator works properly. The regulator

outlet should be sanitized before and after testing. a. Check that the shut-off button is closed.b. Gently inhale through the regulator outlet and hold

your breath for about 10 seconds. If the negativepressure is maintained, there is no leakage.

c. Gently exhale through the regulator outlet for about10 seconds. If the positive pressure is maintained,there is no leakage.

d. Do not use the apparatus if air flow through the reg-ulator is detected in either test. Return the regula-tor to a Certified repair person.

2. Inspect the shut-off button, and by-pass valve.a. With the regulator pressurized, operate each valve

to be sure it operates.

b. Listen to the regulator. Any unusual sounds, suchas whistling, chattering, clicking, or rattling meanthat the regulator should be checked further.

c. If any of these symptoms occur, the apparatus mustbe removed from service. Return the regulator to aCertified repair person.

Do not disconnect when pressurized. Release all pres-sure from the regulator by opening the bypass valve.Removing the regulator when pressurized may resultin serious personal injury, death, or damage to equip-ment.

19TAL 106 (L) Rev. 1 - 497230

WARNING