Scott SKA-PAK AT Operating & Maintenance Instructions

OPERATING & MAINTENANCE INSTRUCTIONS

SKA-PAK® AT

AUTO TRANSFER

COMBINATION SELF-CONTAINED BREATHING APPARATUS

FOR ESCAPE AND PRESSURE DEMAND TYPE C

SUPPLIED-AIR RESPIRATOR WITH AUTO TRANSFER

BREATHING REGULATOR WITH VIBRALERT

PRESS UR E GAUGE WITH ELECTRONIC ALARM

AIRLINE

CON NE CT ION

HOSE

TYPICAL SKA-PAK AT WITH STANDARD HARNESS

FRONT VIEW

HOSE FROM

PRESSURE

REDUC ER TO

BREATHING

REGULATOR

SHOUL DE R

STRAP

CYLIN DE R

AND VALVE

ASSEMBLY

FACEPIECE

CYLIN DE R

VALVE KNOB

TYP IC AL SKA-PAK AT WI TH STANDARD H AR NE SS

REAR VIEW

HEAD

HARNESS

HOSE FROM

PRESSURE RE DU CE R

TO BREATHING

REGULATOR

AIRLINE

CON NE CT ION

HOSE

PRESS UR E

REDUCER

Scott SKA-PAK AT units may vary in appearance, accessories and options.

IMPROPER USE OF THIS RESPIRATOR MAY RESULT IN PERSONAL INJURY OR DEATH. IMP R OP E R U S E I NCL U DE S , B U T I S N O T L IMI T ED TO, US E WI T HO U T A D EQ U ATE TR A INI N G, DIS REG A RD OF TH E W A RN I NG S A N D I NST RUC T IO N S C ON T AI N ED HE R EIN , A N D F AI L UR E TO INSPECT AND MAINTAIN THIS RESPIRATOR.

TH IS R E SPIRATOR IS INTEND ED T O BE USED ONLY IN CONJ U NCTION WITH AN ORGANIZE D RESP I RAT O RY PR OTEC T ION PROG R AM WH ICH COMP L IES WITH THE REQU I R EME N TS OF "PRACTICES FOR RESPIRATORY PROTECTION," Z88.2 AVAILABLE FROM AMERICAN NATIONAL STANDARDS INSTITUTE INC., 1430 BROADWAY, NEW YORK, N.Y., 10018; OR THE REQUIREMENTS OF OSHA SAFETY AND HEALTH STANDARD 29 CFR 1910 PARAGRAPH 134 AVAILABLE FROM THE U. S. D EPART MENT OF LAB OR, OCCUPATIONA L SAFETY AND HEALTH ADMINIST RATIO N; OR OTHER PERTINENT NATIONALLY RECOGNIZED STANDARDS, SUCH AS THOSE PROMULGATED BY THE US COAST GUARD OR THE DEPARTMENT OF DEFENSE.

WARNING

Page 1 of 44 P/N 595189-01 Rev A 4/10

SKA-PAK® AT

AUTO TRANSFER

COMBINATION SELF-CONTAINED BREATHING APPARATUS WITH HARNESS

FOR ESCAPE AND PRESSURE DEMAND TYPE C

SUPPLIED-AIR RESPIRATOR WITH AUTO TRANSFER

GENERAL DESCRIPTION

The Scott SKA-PAK AT respirator is approved by the National Institute for Occupational Safety and Health (NIOSH) as a pressuredemand, open circuit, combination self contained breathing apparatus for escape and Type C supplied-air respirator. The SKA-PAK AT is designed to prov ide respiratory protection during entry into, work in and escape from an objectionable, oxygen deficient and/or unbreathable (toxic) atmosphere.

This respirator is to be used only by persons trained in the use of the respirator and only in conjunction with an organized respiratory protection program. This respirator is not to be used under water, for interior structural fire fighting or for any other purpose not authorized by the organized respiratory protection program that applies specifically to the user.

The SKA-PAK AT is referred to as a “combination SCBA/hoseline” respirator because it operates as either a pressure-demand Type C supplied-air respirator when using air from a remote air supply system connected to the supply hose or as an escape only self-contained breathing apparatus when using air from the cylinder on the waist belt. The self-contained air supply may be used if the remote air supply system fails or when the air supply hose must be disconnected from the respirator for emergency escape from the work area. The SKA-PAK AT offers the additional advantage of an Automatic Transfer pressure reducer which can detect an interruption in the suppliedairline air pressure and automatically switch to the breathing cylinder while warning the user through the VIBRALERT® end of service time indicator in the facepiece mounted regulator.

Th e SKA-PAK AT is available in fi ve configurati o n s for use wit h th e follo w ing air supply cylinder s : 2216 psi 3 minute , 3000 psi 5 mi nute, 10 minute a nd 15 mi n ute, and 4500 ps i 10 min u te and 15 minute. These time durations represent NIOSH standards. Depending on activity and respiration rate, the actual duration may be much less than the NIOSH rating. Refer to the NIOSH approval label for the SKA-PAK AT, SCOTT P/N 59501 4-01, for the list of approved component part numbers.

When used as a Type C supplied-air respirator, the SKA-PAK AT must be supplied with clean, respirable air through the appropriate air supply hose.

The respirator consists of an adjusta b l e ha r n e s s t o s upport the re spirator o n the b o dy of th e user, a cylind e r and va lve assem bly for storing compressed breathing air, an automatic transfer pressure red u cin g reg u lat o r an d co u p lin g mo u nted on the cy lin d er va lve, a c y linder p r essure ga uge with an ELEC T RONIC al a rm, an airline connection hose, one or more segments of air supply hose to connect the resp irator to an air s upply sy stem, a h ose asse mbly connecting the pressure reducer to the facepiece mounted pressure demand breathing regulator with VIBRALERT®, and a full facepiece assembly.

DO NOT OPE RATE THIS E QUIPMENT WHILE

WARNING

UNDER THE INFLUENCE OF DRUGS, ALCOHOL, OR ANY MEDICATIONS OR SUBSTANCES WHICH MAY AFFECT VISION, DEXTERITY, OR JUDGMENT. USERS OF THIS EQUIPMENT MUST BE IN GOOD PHYSICAL AND MENTAL HEALTH IN ORDER TO OPERATE SAFELY. DO NOT USE THIS EQUIPMENT WHEN FATIGUE PREVENTS SAFE OPERATION. STAY ALERT WHEN OPERATING THIS EQUIPMENT. INATTEN TION OR CARELES SNE SS WHI LE OPERATING THIS EQUIPMENT MAY RESULT IN SERIOUS INJURY OR DEATH.

WARNING

CERTAIN ENVIRONMENTS MAY REQUIRE THAT PROTECTIVE MATERIAL COVER SOME OR ALL OF THE RESPIRATOR IN AD DIT ION TO COV ERI NG T HE USE R . T HE USER MU S T BE AB L E TO ACCESS TH E CO NTR OLS OF T H E RES P IRA TOR AT A LL TIMES. INABILITY TO ACCESS CONTROLS OF THE RESPIRATOR WHEN THE RESPIRATOR IS NEEDED FOR ESCAPE MAY RESULT IN SERIOUS INJURY OR DEATH.

WARNING

IF EITHER THE VIBRALERT END OF SERVICE TIME INDICATOR OR THE ELECTRONIC ALARM AC TUAT ES AT ANY TIM E DURING RESPIRATOR USE, LEAVE THE AREA REQUIRING RESPIRATORY PROTECTION IMMEDIATELY. ACTUATION OF THE VIBRAL ERT MEANS THAT THE AIR SUPPLY HOSE HAS FAILED AND IS NO LONGER PROVIDING THE NECES SA RY P RE SSURE TO OPE RATE THE RESPIRATOR. ACTUATION OF THE ELECTRONIC ALARM MEANS THAT THE AIR SUPPLY CYLI NDE R HAS BEE N DEPLE TED TO 90% (+/-5%) OF FULL VOLUME. IN EITHER CASE, FAILURE TO LEAVE THE HAZARDOUS AREA IMMEDIATELY MAY RESULT IN SERIOUS INJURY OR DEATH.

WARNING

DO NO T USE THE SEL F -CON TA I NED AIR SUPPLY FOR A NY P UR PO SE OTHER THAN EMERGENCY ESCAPE. IF THE SELF-CONTAINED A IR SUPPLY HAS BEEN DEPLETED, THERE MAY BE INSUFFICIENT AIR SUPPLY FOR ESCAPE WHICH COULD RESULT IN SERIOUS INJURY OR DEATH.

Page 2 of 44P/N 595189-01 Rev A 4/10

The breathing regulator is equipped with a VIBRALERT alarm which warns t he user with both sound and feel that the supplied-air line pressure has been interrupted and that the reducer has automatically transferred to the cylinder air supply. The ELECTRONIC alarm will be actuated when the cylinder pressure drops below 90% (+/- 5%) of full rating, whether caused by breathing down the cylind er or to indicat e a malfunction or leak in the c ylinde r supply system. The ELECTRONIC alarm requires one 9V battery for operation. See the EL E CTRONIC ALA R M BATTERY R E PLACEMENT s e ction of this instruction.

The breathing regulator is also equipped with an air-saver/donning switch to prevent rapid loss of air if the air supply is turned on before donning the facepiece or if the facepiece is removed before disconne cting the supp ly hose or befor e turni n g off the air supply. The regulator is available with or without a quick disconnect fitting.

SCOTT full facepieces are available in a variety of styles and sizes. The facepieces may be readily detached from the breathing regulator to allow for the use of the best fitting and most comfortable size or style facepiece for an individual user. Fit testing per OSHA Standard 29 CFR Part 1910 or ANSI Standard Z88.2 requires testing in the negative press ure mode using equipment such a s a Portacou nt®

Respirator Fit Tester. For this, SCOTT facepieces require use

Plus of SCOTT Fit Test Adapter P/N 804057-01 or equivalent and appropriate negative pressure testing equipment. Mask Seal Kit P/N 80565501 may also be required to attain a proper fit. Each size facepiece may be equipped with a lens kit if the use of corrective spectacles is required.

Several self-contained air c ylinders are avail able for use with the SKA-PAK AT.

The airline air supply must be supplied with breathing air known to be suitable for human respiration at a pressure of 80 psig to 115 psig operation with a minimum flow rate of 200 liters per minute (lpm). Airline connection hoses used during Type C supplied-air respirator operation have one of five types of quick connect plugs and come in single- or dual-plug versions. Dual plug versions provide a facility for transition between redundant air supply hoses. On both the single and dual plug versions, a check valve in the pressure reducer prevents air flow from the respirator when the air supply hose is not in use or is disconnected from the respirator. On dual plug versions, each plug is individually checked to prevent depletion of the air supply when one (or both) of the air supply hoses is disconnected from the respirator or not in use.

Air supply hoses are available in several lengths. The maximum length and maximum number of segments of air supply hose allowed varies with the type of air supply hose. The air supply hoses and their limitations are covered in Table 1 and Table 2 of this instruction sheet.

RESPIRATORS SHALL NOT BE WORN WHEN

WARNING

CO N D I T I O N S PR E V E N T A G O O D FA C E TO FACEPIECE SEAL OR A GOOD SEAL AROUND THE NOSE CUP. SUCH CONDITIONS MAY INCLUDE, BUT ARE NOT LIMITED TO, GROWTH OF BE AR DS, SI DEBURNS, A S K U L L CAP T H AT P R O J E C T S U N D E R THE FACEPIECE, OR TEMPLE PIECES ON GL ASS ES. ALSO, THE ABSE NCE OF ON E OR BOTH DENTURES CAN SERIOUSLY EFFECT THE FIT OF THE FACEPIECE. USE OF THE RESPIRATOR WITHOUT A GOOD FACE TO FACEPIECE SEAL OR A GOOD SEAL AROUND THE NOSE CUP SEAL MAY REDU CE THE DURATION OF USE A ND/OR EXP OS E THE USER TO THE ATMOSPHE RE THE RESPIRATOR IS INTENDED TO PROTE C T AG AINST RESULTIN G IN SERIOU S INJURY OR DEATH.

WARNING

FAILURE TO PROPERLY FIT THE RESPIRATOR FACEPIECE TO THE USER MAY RESULT IN LITTLE OR NO RESPIRATORY PROTECTION AND MAY EXPOSE THE WEARER TO SUBSTANCES WHICH CAN CAUSE SERIOUS INJ URY OR DEATH.

WARNING

USE ONLY BREATHING AIR KNOWN TO BE SUITABLE FOR HU MAN RESPIRATION. THE USE OF "TOOL AIR," "INST RUMEN T A IR," OR ANY AIR SUPPLY NOT SPECIFICALLY INTENDED FOR HUMAN BREATHING CAN RESULT IN SERIOUS INJURY OR DEATH.

WARNING

THE USE OF AIR SUPPLY HOSE OTHER THAN THOSE SPECIFICALLY INTENDED FOR USE WITH THE RESPIRATOR OR THE USE OF LENGTHS EXCEEDING THE MAXIMUM LENGTHS SPECIFIED MAY REDUCE THE ABILITY OF THE RESPIRATOR TO SUPPLY AIR AND MAY EXPOSE THE USER TO THE HAZARDOUS ATMOSPHERE WHICH MAY RESULT IN SERIOUS INJURY OR DEATH.

Kevlar is a registered trademark of E.I. du Pont de Nemours, Inc.

Portacount® Plus is a registered trademark of TSI Incorporated

IF USE OF A HOSE IN THE WORK AREA

WARNING

WILL CREATE A HAZARD, DO NOT USE THIS RES PI RATOR. MAKE WHATEVER CHANGES ARE NECE SSARY FOR SAFETY, SUCH AS SELECTING AN APPROPRIATE RESPIRATOR. FAILURE TO CONSIDER ALL POSSI B LE CIRC U M STANC E S IN THE USE OF THIS EQUIPMENT MAY RESULT IN SERIOUS INJURY OR DEATH.

GENERAL DESCRIPTION

CONTINUED ON NEXT PAGE...

Page 3 of 44 P/N 595189-01 Rev A 4/10

GENERAL DESCRIPTION CONTINUED...

ADJUSTABLE HARNESSES

STANDARD HARNESSES

Two versions of the standard harness are available: a flame resistant waist and shoulder harness made of Kevlar1 black aramid webbing with yellow stripes and metallic buckles, and a corrosion resistant waist and shoulder harness made of black nylon webbing with nonmetallic buckles. If accidental exposure to heat and/or flame is possible, use only the Kevlar head harness and the Kevlar waist and shoulder harness on SKA-PAK AT respirators. The black-colored nylon webbing used on the corrosion resistant waist and shoulder harness and the black-colored polyester head harness will soften or melt if exposed to high temperatures and, if exposed to flame, may burn.

The SKA-PAK AT Retrofit Kit provides the SKA-PAK AT reducer assembly and the required VIBRALERT® regulator to use the SKA-PAK AT with an original SKA-PAK and SKA-PAK PLUS standard harnesses. To maintain compliance with the NIOSH approval, a service update of the associated cylinder and valve assemblies may have to be performed by an authorized SCOTT Service Center. Check the NIOSH approval label for the SKA-PAK AT, SCOTT P/N 595014-01, for the list of approved component part numbers.

FULL BODY HARNESS

Where fall protection is required, the SKA-PAK AT is available with a multipurpose Full Body Harness (P/N 805061-04). This harness is intended to be used only in accordance with both the user's respiratory protection program and fall protection program. For additional instructions on application, fitting, maintenance, and inspection of the Full Body Harness, see DBI/SALA® document (SCOTT P/N 89497-01) provided with the Full Body Harness.

DO NOT USE THE BLACK POLYESTER HEAD

WARNING

HARNESS OR BLACK NYLON WAIST AND SHOULDER HARNESS WHEN ACCIDENTAL EX POS U RE TO HIG H HEAT OR FLA ME IS A POSSIBILITY. IN THOSE CIRCUMSTANCES, THE POLYESTER MAY MELT OR BURN CAUSING INJURY OR MAY INTERFERE WITH RESPIRATORY PROTECTION RESULTING IN SERIOUS INJURY OR DEATH.

WARNING

MAN U FACTU R E R S I N S T R U CTIO N S FOR THE FULL BODY HARNESS MUST BE FOLLOWED. DO NOT USE HARN ESS IF WEAR OR DAMAGE IS PRESENT. IF BODY HARNESS HAS BEEN SUBJECTED TO FALL ARREST OR IMPACT FORCES IT MUST BE IMMEDIATELY REMOVED FROM SERVICE AND DESTROYED. CONNECTING SNAP AND D-RING MUST BE COMPATIBLE IN SIZE, SHAPE AND STRENGTH. FAILURE TO FOLLO W MANUFACTURER ’ S INSTRU C T I O N S FOR HARNE SS MAY RESU LT IN SER IOU S INJ URY OR DEATH.

BREATHING REGULATOR WITH VIBRALERT

PRESS UR E GAUGE WITH ELECTRONIC ALARM

AIRLINE

SUPPLY HOSE

TYPICAL SKA-PAK AT

WITH FULL BODY HARNESS

FRONT VIEW

FACEPIECE

FULL BODY

HARNESS

CYLIN DE R AND

VALVE ASSEMBLY

CYLIN DE R

VALVE KNOB

HEAD HARNESS

HOSE FROM

PRESSURE

REDUC ER TO

BREATHING

REGULATOR

AIRLINE

CON NE CT ION

HOSE

PRESS UR E

REDUCER

TYPICAL SKA-PAK AT

WITH FULL BODY HARNESS

REAR VIEW

Page 4 of 44P/N 595189-01 Rev A 4/10

DURATION OF THE RESPIRATOR

The SKA-PAK AT respirator is rated and approved by NIOSH as a combination self-contained breathing apparatus for escape and pressure demand Type C supplied-air respirator. The duration of this respirator, when used as a Type C supplied-air respirator, is limited only by the capacity of the air-supply system. The duration of this respirator during use as an escape only SCBA is limited by the capacity of the self-contained air supply cylinder on the waist belt. The cylinder's rated duration is marked on the cylinder. The user should not expect to obtain exactly the stated duration of breathing air during each use of the self-contained air supply cylinder. The user’s breathing rate may be more or less than the 40 lpm respiration standard used in the NIOSH tests. Depending on activity and respiration rate, the actual duration may be less than 1/2 the rated duration of the air supply cylinder. The length of time the self-contained air supply cylinder will continue to provide breathing air during any one use depends on such factors as:

1. The degree of physical activity of the user.

2. The physical condition of the user.

3. The degree to which the user's breathing is affected by excitement, fear or other emotional factors.

4. The degree of training or experience the user has with this or similar equipment.

5. Whether or not the cylinder is fully charged at the start of the use period.

6. The possible presence in the compressed air of carbon dioxide concentrations greater than .04% normally found in atmospheric air.

7. The atmospheric pressure; for example, if used in a pressurized tunnel or caisson at 2 atmospheres (15 psig gauge) the duration will be one-half as long as when used at 1 atmosphere; and at 3 atmospheres will be one-third as long.

8. Loose or improperly fitting facepiece.

9. Whether the purge valve is open.

10. The condition of the respirator.

THE HIGH PHYSICAL AND/OR EMOTIONAL

WARNING

LEVEL ASSOCIATED WITH EMERGENCY SITUATIONS TEND TO INCREASE BREATHING RATE AND TO DECREASE THE ACTUAL DURATION OF THE SELF-CONTAINED AIR SU P P LY. FA ILURE TO CONS I D E R TH E SE FACTORS MAY RESULT IN SERIOUS INJURY OR DEATH.

WARNING

DO NOT USE THIS RESPIRATOR IN A PRESSURIZED ENVIRONMENT. THE DURATION OF THE SELF-CONTAINED AIR CYLINDER ON THIS RESPIRATOR WILL BE SIGNIFICANTLY SHORTER IN A PRESSURIZED ATMOSPHERE AND MAY NOT PROVIDE ADEQUATE TIME FOR ESCAPE RESULTING IN SERIOUS INJURY OR DEATH.

WARNING

THE PURGE VALVE IS AN EMERGENCY CONTROL FOR USE ONLY IN THE EVENT OF A FAILURE OF THE MASK MOUNTED BREATHING REGULATOR. OPENING THE PURGE VALVE FOR ANY OTHER REASON WHILE THE RESPIRATOR IS BEING SUPPLIED WITH AIR FROM THE ESCAPE AIR SUPPLY CYLINDER COULD EXHAUST THE RESPIRATOR AIR SUPPLY IN AS LITTLE AS 2 MINUTES AND MAY RESULT IN SUDDEN TERMINATION OF BREATHING AIR WHICH COULD CAUSE SERIOUS INJURY OR DEATH.

INTRINSIC SAFETY

Th e SCOTT SKA-P A K AT respirat o r equipped w i t h an electro n ic end of time indicator (ELECTRONIC alarm) is listed by SGS U. S. TE STING COMP ANY INC. a s intrinsi c ally safe per ANSI/U L Std. UL-913 for use in Class I, II, III, Groups A, B, C, D, E, F, and G Hazardous Locations when powered by one of the following 9 volt batteries: Energizer2 Alkaline No. 522 or EN22, Duracell3 Alkaline No. PC 1604 or MN 1604, or for increased service life use Ultralife4 Lithium Battery No. U9VL. WARNING – Substitution of Components May Impair Intrinsic Safety. To

reduce the risk of ignition of a ammable atmosphere, batteries must only be changed in an area known to be nonammable. To reduce the risk of ex-

plosion, do not mix old batteries with unused batteries, or mix batteries from different manufacturers. The electronic end of service time indicator has not been evaluated as an ignition source in explosive or flammable atmosphere by MSHA/NIOSH.

QUESTIONS OR CONCERNS

If you have any questions or concerns regarding use of this equipment, contact your authorized SCOTT distributor, or contact SCOTT at 1-800-247-7257 (or 704-291-8300 outside the continental United States) or visit our web site at www.scotthealthsafety.com.

Energizer is a registered trademark of Eveready Battery Company, Inc., St. Louis, MO.

Duracell is a registered trademark of the Procter & Gamble Company, Cincinnati, OH .

Ultralife is a registered trademark of Ultralife Batteries, Inc., Newark, NY.

REGULARLY INSPECT THE SKA-PAK AT

WARNING

RESPIRATOR INCLUDING THE ELECTRONIC ALARM AS DESCRIBED IN THIS INSTRUCTION. VERIFY THAT THE PROPER BATTERIE S AR E US E D AND THAT TH ERE IS NO DAMAGE TO OR MODIFICATION OF THE UNIT THAT WOULD IMPAIR T HE INTRINSIC SAFETY. IF THE SKA-PAK AT IS USED IN AN EXPLOSIVE OR FLAMMABLE ATMOSPHERE, FAILURE TO CORRECT CONDITIONS THAT MAY IMPAIR THE INTRINSIC SAFETY OF THE EQUIPMENT MAY LEAD TO A FIRE OR AN EXPLOSION WHICH COULD RESULT IN SERIOUS INJURY OR DEATH.

Page 5 of 44 P/N 595189-01 Rev A 4/10

FACEPIECE FITTING AND FIT TESTING

A respirator Quantitative Fit Test must be performed to ensure the correct respirator facepiece size has been selected and assigned to the user. It is the responsibility of the Respiratory Protection Program Manager or Safety Coordinator to assist the user in selecting the correct respirator size relative to the user’s facial features and dimensions. Fit Testing must be performed with any approved SCOTT accessories that will be used with the respirator installed, such as a communications device installed on the facepiece.

Respirator fit tests are explained fully in the American National Standard Practices for Respiratory Protection, ANSI Z88.10-2001 which is published by the American National Standards Institute (ANSI), 11 West 42nd Street, New York, New York, 10036, and in the Occupational Safety and Health Standards, OSHA 29 CFR 1910.134 Appendix A, which is published by the Occupational Safety and Health Administration (OSHA), 200 Constitution Avenue, NW, Washington DC, 20210.

Quantitative Fit Testing per OSHA Standard 29 CFR Part 1910.134 Appendix A, or ANSI Standard Z88.10-2001 requires testing in the negative pressure mode using equipment such as a Portacount Quantitative Fit Testing, SCOTT facepieces require use of the appropriate negative pressure testing equipment such as the Portacount Respirator Fit Tester along with the following:

• SCOTT 40mm facepiece Adapter, P/N 200423-01,

• a new SCOTT P100 Cartridge, P/N 052683,

• SCOTT Probed Fit Test Adapter P/N 805628-01 or equivalent probed

facepieces and the full range of sizes and styles

• Mask Seal Kit, P/N 805655-01

• the appropriate SCOTT communication device and mounting bracket

properly installed on the facepiece, if such an accessory will be used with the respirator.

• any other optional hood, eyeglass, or other accessory that will be used

with the respirator.

The size and style facepiece must be selected based on the user’s measured face size. For initial fitting, carefully don the facepiece and conduct a NEGATIVE PRESSURE LEAK TEST according to the instructions provided with the 40mm Adapter. Refer to the DONNING PROCEDURE section of this instruction for the procedure. Follow the DONNING PROCEDURE CARE- FULLY. If the selected facepiece does not pass the NEGATIVE PRESSURE LEAK TEST or does not fit securely without movement in the chin or chin cup area or the user experiences discomfort in the chin or throat, try the next nearest size, larger or smaller. After passing the NEGATIVE PRESSURE LEAK TEST, the facepiece size selected must be verified by successfully passing a respirator Quantitative Fit Test.

When fit testing for Open-Circuit, Pressure Demand Self-Contained Breathing Apparatus and/or Type C Pressure-Demand Supplied Air Respirator mode of operation (minimum Fit Factor equal to or greater than 500 minimum) appropriate negative pressure testing equipment must be used. You should use a P100 Filter, SCOTT P/N 052683 and the SCOTT P/N 805628-01 Fit Test Adapter.

When using a Portacount Respirator Fit Tester for Quantitative Fit Testing, TSI recommends that the level of particles in the ambient air must be between 5000 and 30000 particles/cm3. Refer to the Portacount Respirator Fit Tester user instructions for details including available Particle Generators to use with the Portacount Respirator Fit Tester if you have difficulty achieving the minimum level of ambient particle count required.

Test subjects must be in good health at the time of the fit testing. Smoking or eating less than 30 minutes prior to the test is prohibited. Any and all conditions that might interfere with a good face to facepiece seal must be addressed and corrected before performing the fit testing. Refer to the list of conditions in the DONNING PROCEDURES section of this instruction.

®1

Respirator Fit Tester. For

THE USER MUST BE PROPERLY FITTED

WARNING

USING A RES PI RATOR QUAN TITATIVE FIT TEST BEFORE USE AND FOLLOW ALL WARNINGS AND SPECIAL OR CRITICAL USER’S INSTRUCTIONS SPECIFIED DURING USE. FAILURE TO DO SO MAY RESULT IN SERIOUS INJURY OR DEATH.

WARNING

FIT TESTING IN ACCORDANCE WITH OSHA STANDARD 29 CFR PART 1910 IS REQUIRED AS PART OF THE REQUIRED TRAINING BEFOR E USE OF THIS RESPIRATOR. FAILURE TO PROPERLY FIT AND TRAIN THE USER IN USE OF THE FACEPIECE AND RESPIRATOR MAY RES ULT IN EXPO SUR E TO THE HAZARDOUS ATMOSPHERE WHICH COULD LEAD TO SERIOUS INJURY OR DEATH.

WARNING

RESPIRATORS SHALL NOT BE WORN WHEN CO N D I TIO N S P R E VE N T A G O O D FAC E SEAL. SUCH CONDITIONS MAY INCLUDE, BU T AR E NOT LIMI T ED TO, GROWTH OF BE A R D S, SIDEBUR N S , FAC I A L HA IR OR LOW HAIRLINE THAT CROSSES OR INTERFERES WITH THE SEALING SURFACE, THICK OR PROTRUDING HAIRSTYLES SUCH AS PONY TAILS OR BUNS THAT INTERFERE WITH THE SMOOTH AND CLOSE FIT OF THE HEAD HARNESS TO THE HEAD, A SKULL CAP THAT PROJECTS UNDER THE FACEPIECE, TEMPLE PIECES ON CORRECTIVE EYE GLASSES, EXCESSIVE USE OF COSMETICS INCLUDING MOISTURIZERS, MAKEUP, OR AFTER SHAVE, OR ANYTHI NG ELSE WH ICH INTE RFE RES WITH THE FAC E TO FACEPIECE SEAL. ALSO, THE ABSENCE OF ONE OR BOTH DENTURES CAN SERIOUSLY AFFECT THE FIT OF A FACEPIECE. USE OF AN IMPROPERLY FITTED FACEPIECE MAY LEA D TO EXPOSURE TO THE HAZARDOUS ATMOSPHERE WHICH COULD RESULT IN SERIOUS INJURY OR DEATH.

Page 6 of 44P/N 595189-01 Rev A 4/10

To verify the fit factor of the respirator, testing must incorporate an exercise regimen of normal daily activities. SCOTT requires the following set of fit test exercises, which are based on OSHA Standard 29 CFR Part 1910.134 Appendix A, and ANSI Z88.10-2001 with modifications.

Exercises are to be performed each for 60 seconds (except as noted) in a standing position during the test:

• Normal Breathing

• Deep breathing

• Turning head side to side

• Moving head up and down (look up/look down)

• Talking (read the Rainbow Passage)

• Grimace (15 seconds)

• Bending Over (touch toes) / Reach up (toward the ceiling)

• Normal Breathing (repeat)

Fit test exercises must be performed carefully as if the respirator was being used in a hazardous atmosphere. DO NOT bump the facepiece, filter, or adapter into the body through exaggerated motions. DO NOT talk except when directed to by the test administrator.

SCOTT requires that users of this respirator with an approved SCOTT facepiece, must achieve a Fit Factor of at least 500 for Type C PressureDemand Supplied Air Respirator mode of operation for use with their assigned facepiece style and size using the fit test procedures and exercise regimen stated above. If a Fit Factor of at least 500 cannot be achieved with any facepiece size or style, the user MUST NOT use this respirator.

If the respirator user passes a NEGATIVE PRESSURE LEAK TEST but DOES NOT pass a respirator Quantitative Fit Test, try the next nearest size, larger or smaller and repeat the NEGATIVE PRESSURE LEAK TEST and the Quantitative Fit Test. If leakage is still detected, either per these user instructions or the OSHA fit testing process, the use of Mask Seal Kit P/N 805655-01 may be required to attain a proper fit. Refer to the INSTALLATION AND USE INSTRUCTIONS, SCOTT P/N 89462-01, included with the Mask Seal Kit. After installing the Mask Seal Kit, repeat the fit testing process to confirm a proper fit.

Once the proper size is selected and assigned to the user following successful Portacount Respirator Fit Tester testing to achieve minimum Fit Factors required, the respirator user must perform and pass a NEGATIVE PRESSURE LEAK TEST as described in these instructions every time the facepiece is donned to ensure proper fit before using the respirator in a hazardous atmosphere.

During NEGATIVE PRESSURE LEAK TESTING, any facepiece leakage that is detected from other than the face to facepiece seal may indicate damaged or defective equipment. Remove the defective equipment from service and tag for repair by authorized personnel. Repeat the testing with equipment known to be operating properly.

IF A SATISFACTORY NEGATIVE PRESSURE LEAK TEST CANNOT BE PERFORMED, DO NOT USE THE RESPIRATOR OR ENTER THE HAZARDOUS ATMOSPHERE.

The facepiece alone does not provide any protection against a hazardous atmosphere without the use of the complete respirator.

A respirator Quantitative Fit Test must be routinely carried out as outlined above for each user of this respirator to determine or confirm the amount of protection that the respirator provides.

Periodi cal ly repeating the fit testing is required to identify any physical changes of the user (such as those listed in the DONNING PROCEDURES) which could effect the fit of the facepiece.

Page 7 of 44 P/N 595189-01 Rev A 4/10

AIR SUPPLY SYSTEM REQUIREMENTS

Wh en t he r espirator is use d as a Type C supp lied air respirat o r I T IS THE RESPONSI B I LITY OF THE ORGANIZED RES P I RATORY PROGRAM UNDER WHICH THE RESPIRATOR IS USED TO PROVI D E A SUPPLY OF AIR THAT I S KNOWN TO BE CLEAN AND SAFE FOR BREATHING AND TO ENSURE THAT ALL OTHER REQUIREMENTS OF THE BREATHING AIR SUPPLY SYSTEM ST ATED BELO W ARE MET .

To use the SKA-PAK AT combination respirator as a Type C suppliedai r resp irator, it must be connected to a suitabl e suppl y of c lean breathing air through one or more segments of air supply hose. The air supply system must supply air containing no less than 19.5 percent oxygen and meeting the Grade “D” requirements of the Compressed Gas Association (CGA) Commodity Specification for Air G–7.1 available from the CGA, Inc. 1235 Jefferson Davis Highway, Arlington, Virginia, 22202.

In addition, the air must be dry, TO A DEW POINT OF -65°F / -54°C OR LOWER. If the breathing air is not dry, water may condense on the inside of the air supply lines or inside the respirator. In temperatures at or below freezing, +32°F / 0°C, the condensation may freeze inside the air supply lines or inside the respirator, possibly causing the flow of breathing air to be reduced or to stop completely.

NOTE

THE AIR USED IN THE AIR SUPPLY CYLINDER ON THE RESPIRATOR IS ALSO REQUIRED TO BE DRY TO A DEW POINT OF -65°F / -54°C OR LOWER.

The user’s breathing air volume requirement will vary depending on the activity being performed. The volume of air needed, expressed in liters per minute (lpm) at 1 atmosphere pressure, may range from less than 20 lpm when at rest to over 60 lpm during heavy work.

The air supply system must have the capacity to meet the user’s volume requ ireme nt for respiration while maintaining the req uired supply pressure of no less than 60 psig an d no more than 125 psig at the point of attachment of the respirator airline connection hose to the air sup ply system. If the pressure in the air supply system can exceed 125 psig, the air supply system shall be equipped with a pr e s s u r e- re le as e mechanism that will prevent the pressure at the point of attachment of the hose to the air supply system from exceeding 125 psig.

The coupling installed on the air supply system must match both the coupling installed on the supply hose and the coupling installed on the airline connection hose. The correct coupling must be directly installed on the air supply system. Adapters shall not be used. The couplings and fittings that mate with the couplings used on SCOTT air supply hose are available from SCOTT or from the coupling manufacturer. To determine what couplings are required, locate the SCOTT part number stamped on the end of the Airline Connection Hose Assembly located in the waist belt of the respirator. Refer to Table 2 on Page 29 of this instruction to determine the manufacturer and series number of the couplings.

The SKA-PAK PLUS combination respirator is NIOSH certified only when used with one of the types of hose with which it has been tested and approved. The types of hose are:

SCOTT 30010-Series air supply hose

• SCOTT 26370-Series air supply hose

• SCOTT 200820-Series air supply hose

• SCOTT 803904-01 air supply hose.

• SCOTT 30020-Series air supply hose and

• SCOTT 26369-Series air supply hose

THE AIR SUPPLY MUST BE FREE OF CON-

WARNING

DENSED MOISTURE. AIR REGULATORS, BY THEIR NATURE, BECOME COLD DURING USE A ND CAN CAUSE MOI STU RE IN THE AIR S UPPLY TO FREEZE EVEN AT AMBIENT TEMPERATURES WELL ABOVE 32° F / 0° C. FROZEN MOISTURE IN THE AIR SUPPLY MAY RES ULT IN PARTI AL OR COMP LETE FAILURE OF THE RESPIRATOR WHICH MAY CAUSE SERIOUS INJURY OR DEATH.

WARNING

DO NOT USE OXYGEN! SUPPLYING THE RESPIRATOR WITH OXYGEN MAY CAUSE SICKNESS OR MAY CAUSE A FIRE OR EXPLOSION RESULTING IN SERIOUS INJURY OR DEATH.

WARNING

THE AIR SUPPLY PRESSURE MUST REMAIN BETWEEN 80 PSIG AND 115 PSIG WITH SUITABLE FLO W AT ALL TIMES DURING U S E . IF THE AI R S U P P L Y DOE S NOT MA I N T A IN THESE REQUIREMENTS, THE RESPIRATOR MAY NOT PROVIDE ADEQUATE P R O T E C T I O N F R OM T H E H A Z A RD O U S ATMOSPHERE WHICH MAY RESULT IN SERIOUS INJURY OR DEATH.

A Guide to Industrial Respiratory Protection, HEW Publication Number (NIOSH)

76-189, John A. Pritchard (US. Dept. of Health Education and Welfare), p. 13.

Page 8 of 44P/N 595189-01 Rev A 4/10

The 30010-Series, 26370-Series, 200820-Series, and 803904-01 air supply hoses may be interchanged to supply a single SKA-PAK AT resp i r ator , and, except for these, different types of supply hose may NOT be mixed. The 30010 series hose utilize a Hansen7 brass disconnect coupling. The 26370 series hose utilizes a stainless steel Foster8 disconnect coupling. The 26369 series hose utilizes a stainless steel Hansen HK disconnect coupling. The 30020 series hose utilizes a steel Schrader9 disconnect coupling. The 805659 series hose utilizes a brass Cejn10 disconnect coupling. One of these types of couplings is located on the end of the airline connection hose and at the ends of each segment of air supply hose. Dual airline connection hoses terminate in two couplings, both of which are of one of the above types.

The air supply hose segments must be directly coupled to the airline connection hose at the waist belt of the respirator, to each other and to the air supply system. Adapters shall not be used.

After determining which type of air supply hose and couplings are used with your respirator, locate the appropriate section of Table 1 on page 23 of this instruction sheet for detailed instructions on operating the coupling and for limitations on air supply hose length and number of segments allowed.

DO NOT USE OTHE R HOSES, COUPLINGS

WARNING

OR ADAPTERS TO ATTACH INCOMPATIBLE COMPONENTS TO THE RESPIRATOR. INCOMPATIBLE COMPONENTS MAY REDUCE THE ABILITY OF THE RESPIRATOR TO SUPPLY AIR AND MAY EXPOSE THE USER TO TH E H A Z A R D O U S ATM O S P H E R E WHICH CO U LD RESU LT IN SE RIOU S IN J URY OR DEATH.

Single Plug Version Dual Plug Version

AIRLINE CONNECTION HOSES

FIGURE 1

THE USER OF THIS RESPIRATOR MAY HAVE

WARNING

TO D I S C O N N E C T T H E HOSE COUPLING SUDDENLY AND UNDER STRESSFUL CONDITIONS. THE USER MUST BE ABLE TO DISCONNECT THE COUPLING UNDER THE CONDITIONS WHICH MAY BE ENCOUNTERED DURING USE, FOR EXAMPLE, WITHOUT BEING ABLE TO SEE THE COUPLING, WITH GLOVES ON, WITH ONE HAND, ETC. FAILURE TO ADEQUATELY TRAIN THE USER MAY RESULT IN SERIOUS INJURY OR DEATH.

Hansen is a registered trademark of Tuthill Corporation.

Foster is a registered trademark of Foster Manufacturing Co., Inc.

Schrader is a registered trademark of Scovill, Inc.

Cejn is a registered trademark of Cejn AB

FIGURE 2

Page 9 of 44 P/N 595189-01 Rev A 4/10

WARNING

THE USER OF THIS RESPIRATOR MAY HAVE TO DISCONNECT THE HOSE COUPLING SUDDENLY AND UNDER STRESSFUL CONDITIONS. THE USER MUST BE ABLE TO DISCONNECT THE COUPLING UNDER THE CONDITIONS WHICH MAY BE ENCOUNTERED DURING USE, FOR EXAMPLE, WITHOUT BEING ABLE TO SEE THE COUPLING, WITH GLOVES ON, WITH ONE HAND, ETC. FAILURE OF THE USER TO ADEQUATELY PERFORM THESE TASKS UNDER STRESSFUL CONDITIONS MAY RESULT IN SERIOUS INJURY OR DEATH.

TABLE 1

LIMITATIONS AND OPERATING INSTRUCTIONS FOR SUPPLY HOSE

NOTE: THE AIR SUPPLY PRESSURE MUST BE MAINTAINED BETWEEN 80 PSIG AND 115 PSIG

WHILE FLOWING AT LEAST 200 LITERS PER MINUTE (LPM) TO EACH USER.

Supply Hose1

26369 Series with stainless steel Hansen HK couplings

26370-Series or 200820-Series, or 803904-01 Hose with stainless steel Foster couplings

30010 Series with brass Hansen couplings

30020 Series with steel Schrader couplings

Appro ve d

Total

Lengths2 (in ft)

0 to 150

0 to 300

Maximum Number

of Segments Ap-

proved

INSTRUCTIONS FOR OPERATION OF COUPLINGS

Note: The user shall practice and be able to disconnect the couplings quickly in an emergency situation.

1. To connect the coupling, rotate socket sleeve "B" until the alignment notch in the sleeve is in line with alignment peg in body "A".

2. Slide sleeve "B" toward the supply hose (away from plug "C") and insert plug "C" into socket "A". Release sleeve "B" while pushing the plug into the socket until engaged, as evidenced by a "click". Test for positive engagement by tugging on the plug.

3. Rotate sleeve "B" one-quarter to one-half turn to lock the plug against accidental release.

4. To disconnect the coupling, realign sleeve "B" with the body of socket "A" as described in step 1. Slide sleeve "B" away from the body (toward the supply hose) to release the plug fitting from the socket.

IF IT IS NOT PRACTICAL TO SEE THE ALIGNMENT NOTCH IN THE SLEEVE, USE THE FOLLOWING PROCEDURE TO DISCONNECT THE COUPLING:

1. Grasp sleeve "B" with the right hand.

2. Simultaneously rotate and push the sleeve away from the plug until the alignment notch in the sleeve lines up with the alignment peg in the body and the socket separates from the plug.

1. Insert plug fitting "C" into socket "A" and continue pushing until it is engaged as evidenced by a "click".

2. Test for positive engagement by tugging on the plug.

3. Disconnect the coupling by rotating sleeve "B" 1/8 turn in the clockwise direction as viewed from the female end of socket "A".

805659 Series with brass CEJN cou-

0 to 300

plings

The female connectors on all supply hose series are checked to stop the flow of air when they are disconnected. Both male and

female connectors are checked on 26369 series supply hose.

"0" feet = d ir ec t connection to air supply sour ce .

Segments of supply hose are commonly available in 25 ft, 50 ft, 75 ft, and 100 ft length segments.

A B C A B C A B C A B C

HANSEN HK COUPLING

USED ON 26369

SERIES

FOS TE R COUPLING

USED ON 26370

SERIES

COUPLINGS USED ON SUPPLY HOSES

1. Insert plug fitting "C" into socket "A" and continue pushing until it is engaged as evidenced by a "click".

2. Test for positive engagement by tugging on the plug.

3. Disconnect the coupling by pushing in on plug "C" while pulling back on sleeve "B". Plug "C" will separate.

HANSE N COUPLING

USED ON 30010 SERIES

FIGURE 3

Page 10 of 44P/N 595189-01 Rev A 4/10

SCHRA DE R COUPLING

USED ON 30020

SERIES

A B C

CEJN COUPLING

USED ON 80 56 59

SERIES

AIRLINE CONNECTION HOSE REPLACEMENT

To replace an airline connection hose with a different type of Scott airline connection hose, remove the hose from the pressure reducer by loosening the fitting on the end of the hose with a 3/4 in ch open e nd wrenc h until i t separa t es from the press ure redu cer. Se e FIGURE 4.

O-RING ON FITTING

O-RIN G ON CH ECK

VALVE IN REDUCER

REPLACING THE AIRLINE CONNECTION HOSE

FIGURE 4

Inspect the airline connection hose to be installed to be certain that the hose is dry, free from obstructions, that the threads on the end fitting are not damaged and that the O-ring seal on the hose fitting is present and in good condition. If the threads are damaged or if the O-ring seal is missing or damaged, DO NOT USE THE AIRLINE CONNECTION HOSE; remove the airline connection hose from service and tag for repair by authorized personnel. Inspect the O-ring in the reducer and r eplace if damaged. Before installing hose, be sure the check valve is properly installed in the reducer and the O-ring is placed on the check valve. To install an airline connection hose, slide the end with the fitting through the sleeve on the waist belt from the right side as worn and thread the fitting into the pressure reducer using moderate force.

DO NOT ATTEMPT TO CHANGE ANY FIT-

WARNING

TINGS ON THE RESPIRATOR OR RESPIRATOR SUPPLY HOSE. THE USE OF FITTINGS, CONNECTIONS OR ADAPTERS NOT SUPPLIED BY SCOTT MAY VOID THE WARRANTY, VOID NIOSH CERTIFICATION AND MAY ADVERSELY EFFECT RESPIRATOR PERFORMANCE AND ENDANGER TH E RESPIR ATOR USER RESULTING I N SERIOUS INJURY OR DEATH.

IDENTIFICATION OF SUPPLY HOSE AND SUPPLY HOSE COUPLINGS

SCOTT Airline Connection

Hose Assy Number

804305-01 Single Plug or 804319-01 Dual Plug

804305-02 Single Plug or 804319-02 Dual Plug

804305-03 Single Plug or 804319-03 Dual Plug

804305-07 Single Plug

NOTES:

Corresponding SCOTT

Supply Hose Required

30010 -S ER IES, 26370-SERIES , 200820-SERIES or 803904-01

SCOT T Par t Number stamped into end o f hose. S ee FIGURE 2.

SCOTT Part Number stamped into hose within 6 inches of either end.

Speci fy silicone seals if ordering cou pl in gs from t he manufacturer.

Fem al e connector with 1/4 inch mal e NPT inlet fi tting.

Fem al e connector with 1/4 inch fem al e NPT inlet fitting.

30020-Series

26369-Series

805659-Series

TABLE 2

Type of coupling req ui re d from

coupling manufacturer for connec-

tion to air supply system SEE WARNING BELOW

Hansen 3000 Series or Foster 3 Series Manual

Schra de r Standard Twist Lock

Hansen 2HK Series

Cejn 342 Series

Page 11 of 44 P/N 595189-01 Rev A 4/10

Air Supply C ou pl in gs

Available from SCOTT

Part No. 19458-00

Part No. 19889-00

Part No. 6831-00

Part No. 55065-00

Part No. 10008005

Not Available

ELECTRONIC ALARM BATTERY REPLACEMENT

The ELECTRONIC alarm requires a single 9 volt battery for operation. The LOW BATTERY YELLOW light on the ELECTRONIC alarm will appear when the battery must be replaced. When the LOW BATTERY YELLOW light begins flashing, the battery has suff icient power to continue normal operation for a period of time longer than the longest duration cylinder that may be installed on the SKA-PAK AT. However, after use of the respirator is terminated, the battery must be replaced before respirator use is resumed. Once the LOW BATTERY YELLOW light has been activated, the ELECTRONIC alarm will not initialize on start-up with a depleted battery and the RED warning light will not operate. Beyond a point, the YELLOW LIGHT will glow instead of flash. Replace the battery as follows:

1. Verify that the cylinder valve is closed and open the purge valve to relieve any pressure in the system. Close the purge valve.

2. Unscrew counterclockwise the single knurled screw on the cover of the ELECTRONIC alarm housing.

3. Open the housing cover and pull the cover gasket away from the cover to reveal the battery. See FIGURE 5A.

BATTERY

COVER

GASKET

BATTERY MUST ONLY BE CHANGED IN AN AREA

WARNING

KNOWN TO BE NONFLAMMABLE. CHANGING THE BATTERY IN A FLAMMABLE ATMOSPHERE MAY CAUSE AN IGNITION WHICH COULD RESULT IN SERIOUS INJURY OR DEATH.

PLUS AND

MINUS

EMBOSSED

IN COVER

FIGURE 5A FIGURE 5B

4. Remove the old battery by lifting the bottom first.

5. R e p l a c e with one of the following 9 volt b a t t e r i e s : Energizer Alkaline No . 522 or EN22 , Duracell Al k a l i ne No. PC1 6 0 4 or MN1604, or for increased service life use Ultralife Lithium Battery No. U9VL.

Be sure battery is properly oriented with the + pole of the battery

(the smaller male snap connector) positioned against the battery contact labeled + as shown in FIGURE 5B. As soon as the battery makes contact, the RED and YELLOW lights will flash alternately as they do for the initialization sequence. IF THE BATTERY IS INSTALLED INCORRECTLY, NEITHER LIGHT WILL FLASH.

6. With a fresh battery installed, fit the cover gasket back around the inside of the cover.

7. Close the cover and thread the knurled screw clockwise back in to secure the cover to the housing. Screw should be finger tight with the cover fully closed and the gasket evenly compressed.

8. Te s t the operation of the E L E C TRONIC a l a r m as outlined in the RE GULA R OPE R A TION A L IN S P ECTI O N se c t ion of th i s instruction.

9. In the case of an inope rative or malfunctioni ng ELECTRONIC alarm, respirator must be removed from service and sent to an authorized service center for alarm repair or replacement. DO NOT use a respirator with an inoperative or malfunctioning ELECTRONIC alarm.

REGULARLY INSPECT THE SKA-PAK AT

WARNING

Page 12 of 44P/N 595189-01 Rev A 4/10

REGULAR OPERATIONAL INSPECTION

The following procedure shall be used when you first receive the respirator and for scheduled inspection of the respirator. All respirators shall be inspected after each use. A respirator not routinely used but kept for emergency use shall be inspected at least monthly. If damage or discrepancies are noted during the inspection of the respirator, remove the respirator from service and tag for repair by authorized personnel. Ensure that the cylinder valve is closed (push in and rotate the cylinder valve knob full clockwise). To vent any trapped air in the system, open the purge valve by rotating the red knob on the breathing regulator to the full counterclockwise position. Any trapped air will flow from the regulator. Close the purge valve by rotating the knob to the full clockwise position when air flow stops.

CYLINDER INSPECTION

NOTE

IT IS THE RESPONSIBILITY OF THE USER TO ENSURE THAT ALL DOT REQUIREMENTS FOR THE SELF-CONTAINED AIR SUPPLY CYLINDER ON THIS RESPIRATOR ARE MET AND MAINTAINED.

1. C heck the latest cylinder hydrosta tic test date to ensure it is

current. All cylinders used with SCOTT self-contained breathing apparatus must be visually inspected regularly and hydrostatically tested by a licensed cylinder retester in accordance with the appropriate US Department of Transportation (DOT) specification or the applicable DOT exemption. For a complete listing of retest date requirements, refer to the current revision of Safety Precautions for Air-Pak Cylinders, Scott P/N 89080-01, available on request from Scott Health and Safety. Composite cylinders (those cylinders utilizing fiber over wrap) must be tested in accordance with the DOT exemption status up to the maximum life of fiber overwrapped cylinders which , at the time of the publication o f this instruction, is 15 years from the date of manufacture. The date of manufacture marked on the cylinder is also the date of the first hydrostatic test. It is the responsibility of your organized respiratory protection program to arrange for visual inspection and hydrostatic testing of cylinders by a licensed retester.

2. Visually inspect cylinder and valve assembly for physical dam-

age such as dents or gouges in metal or in composite wrapping. Cylinders which show physical damage or exposure to high heat or flame, such as paint turned brown or black, decals charred or missing, pressure gauge lens melted or elastomeric bumper di s t o rted, and cyli n d ers which show ev idence of expo s u r e to chemica ls suc h as discol oration, cracks i n the cylin der or the composite wrapping, peeling of the outer layers of the composite wrapping and/or bulging of the cylinder wall, shall be removed from service and e mptied of compressed a ir. Refer to current applicable publications on compressed gas cylinder inspection available from Compressed Gas Association Inc. (703-413-4341), 1725 Jefferson Davis Hwy., #1004, Arlington, VA 22202.

3. Check the cylinder gauge for a “FULL” indication. If the cylinder

pressu re is less tha n “FULL,” replace the cylinder with a fully charged cylinder or have the cylinder charged to the full condition.

Proceed to HARNESS INSPECTION.

FOLLOW THE REGULAR OPERATIONAL IN-

WARNING

SPECTION PROCEDURE EXACTLY. IF THE PURGE DOES NOT ACTUATE AS DESCRIBED IN THIS INSTRUCTION OR ANY OTHER OPERATIONAL MALFUNCTION IS NOTED, DO NOT USE THE RESPIRATOR. REMOVE THE RESPIRATOR FROM SERVICE AND TAG IT FOR REPAIR BY AUTHORIZED PERSONNEL. FAILURE TO PROPERLY IDENTIFY MALFUNCTIONS MAY RESULT IN SERIOUS INJURY OR DEATH.

WARNING

REGULARLY INSPECT THE SKA-PAK AT RESPIRATOR INCLUDING THE ELECTRONIC ALARM AS DESCRIBED IN THIS INSTRUCTION. VERIFY THAT THE PROPER BATTERIE S AR E US E D AND THAT TH ERE IS NO DAMAGE TO OR MODIFICATION OF THE UNIT THAT WOULD IMPAIR T HE INTRINSIC SAFETY. IF THE SKA-PAK AT IS USED IN AN EXPLOSIVE OR FLAMMABLE ATMOSPHERE, FAILURE TO CORRECT CONDITIONS THAT MAY IMPAIR THE INTRINSIC SAFETY OF THE EQUIPMENT MAY LEAD TO A FIRE OR AN EXPLOSION WHICH COULD RESULT IN SERIOUS INJURY OR DEATH.

WARNING

THIS INSPECTION PROCEDURE REQUIRES USING A SMALL AMOUNT OF AIR FROM THE SELF-CONTAINED AIR SUPPLY CYLINDER ON EACH INSPECT ION. IF THE CYLIN DER GAUGE IS NO LONGER READING "FULL", THE CYLINDER MUS T BE RECHARGED TO ITS FULL CONDITI ON BEFORE RETURNING TO SERVICE. USE OF A CYLINDER AIR SUPPLY THAT IS LESS THAN FULL MAY RESULT IN REDUCED DURATION OF THE RESPIRATOR AND MAY RESULT IN SUDDEN TERMINATION OF BREATHING AIR WHICH COULD CAUSE SERIOUS INJURY OR DEATH.

WARNING

DAMAGED CYLINDERS MAY SUDDENLY LEAK OR RUPTURE IF LEFT CHARGED WITH COMPRESSED AIR. FAILURE TO INSPECT FOR DA M A G E AND TO E M P T Y T H E AI R FRO M DAMAGED CYLINDE RS MAY RESULT IN SERIOUS INJURY OR DEATH.

REGULAR OPERATIONAL INSPECTION

CONTINUED ON NEXT PAGE...

Page 13 of 44 P/N 595189-01 Rev A 4/10

REGULAR OPERATIONAL INSPECTION CONTINUED...

HARNESS INSPECTION

1. Inspect the harness as follows:

a) Inspect the Standard Harness for frayed webbing or damaged

bu ckles. Make sure that all belts and straps are assembled properly as shown on Front Cover. Adjust the straps to approximately the full out position. Adjust the shoulder strap so that it holds the waist belt approximately at waist level.

b). Inspect the Full Body Harness for frayed webbing or damaged

buckles. Make sure that the Full Body Harness is assembled properly as shown on Page 4 and referenced in the DBI/SALA full body harness user instructions (SCOTT P/N 89497-01) provided with the harness. If any damage is found, do not use the harness.

NOTE

IF THE FULL BODY HARNESS HAS BEEN SUBJECTED TO FALL ARREST OR IMPACT FORCES, IT MUST BE IMMEDIATELY REMOVED FROM SERVICE AND DESTROYED.

2. Inspect the cylinder attachment to the harness as follows:

a) If the SKA-PAK AT is fitted to a SKA-PAK PLUS harness (either

a standard harness or a Full Body Harness), inspect the valve hanger bracket and the female buckle. The valve hanger bracket should be securely engaged in the female buckle and should not lift out with normal handling. To remove the air supply cylinder from the harness, press the release tab at the bottom of the hanger bracket away from the cylinder valve and lift the air supply cylinder. See FIGURE 6A.

PUSH TAB

FEMALE BUCKLE

STANDARD HARNESS

FEMALE BUCKLE

FULL BODY HARNESS

RELEASE

VALVE HANGER BRACKET

FIGURE 6A

SKA-PAK PLUS HARNESS ATTACHMENTS

Page 14 of 44P/N 595189-01 Rev A 4/10

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Scott SKA-PAK AT Operating & Maintenance Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual