BioPak 240

1
BioPak 240

• Controls, Displays, Checkout Procedure, and
  donning and use under Normal and Emergency
  Conditions

2
Controls and Displays

• O2 Cylinder Valve On/Off
• Emergency Bypass Valve Button
• Alarm Whistle
• Start-Up Alarm Chirp
• Pressure Gauge

3
O2 Cylinder Valve (On/Off)

• The O2 valve must be opened immediately AFTER
  donning the facemask. O2 is wasted if the valve
  is turned on sooner

4
Emergency Bypass Valve Button

• This valve for emergency use only
• If sufficient O2 is not available to inhale a
  full breath, the demand valve may not be
  functioning properly
• Push the Bypass Valve button for about 2 seconds
  to add O2 directly to the breathing chamber
• Repeat the use of the Bypass as required

5
Emergency Bypass Valve Button

• If it is necessary to frequently use the Bypass
  valve, the user must exit the contaminated area
  immediately and have the BioPak 240 serviced
• CAUTION EXCESSIVE USE OF THE EMERGENCY BYPASS
  VALVE WILL SIGNIFICANTLY DECREASE THE DURATION OF
  THE BIOPAK 240. THIS VALVE SHOULD ONLY BE USED
  FOR EMERGENCIES. IT WILL NOT CLEAR FOGGED
  FACEMASKS.

6
Alarm Whistle

• Alarm whistle sounds at 92 dB for approximately
  45-60 seconds when the O2 cylinder pressure drops
  to approximately 25 of its service capacity
  (about 600-750 PSIG).
• When alarm sounds, the user has about one hour of
  working time left in the BioPak 240

7
Alarm Whistle

• CAUTION ONE TIME ALARM FOR APPROXIMATELY ONE
  MINUTE! THE ENTIRE TEAM SHALL PREPARE TO
  TERMINATE WORK ALLOWING SUFFICIENT TIME TO EXIT
  THE AREA.

8
Start-up Alarm Chirp

• When the apparatus is turned on, the user should
  hear a chirp from the alarm to signal that it
  is working properly.
• A chirp also should be heard after the apparatus
  is turned off if more than 750 PSIG is left in
  the O2 cylinder.

9
Pressure Gauge

• The BioPak is provided with a luminescent chest
  mounted pressure gauge, located on the shoulder
  strap, which the user can observe to determine
  approximate service life remaining.

10
Pressure GaugeApproximate Pressure Readings for
BioPak 240

• 3,000 PSIG
• 2,250 PSIG
• 1,500 PSIG
• 750 PSIG

• 4 Hours
• 3 Hours
• 2 Hours
• 1 Hour

11
Pressure Gauge

• It is normal for the Pressure Gauge to take up to
  1 minute to come up to full pressure due to the
  flow restrictor in the gauge line.
• If gauge lines were to be severed, the gauge line
  flow restrictor would limit flow to 0.5 LPM to
  allow safe immediate exit from the hazardous
  area.
• YOU MUST IMMEDIATELY LEAVE THE HAZARDOUS AREA IF
  A GAUGE LINE HAS BEEN SEVERED!

12
PRE-USE INSPECTION

• Obtain BioPak 240 and cooling cannister
• Make sure that a valid Turn-Around Maintenance
  Tag is attached to the O2 cylinder valve. This
  tag assures that the following procedures have
  been performed
• The absorbent canister has been filled with fresh
  CO2 absorbent and inserted into the breathing
  chamber
• The O2 cylinder has been pressurized to 2700
  3000 PSIG as indicated on the O2 cylinder gauge.
• The BioPak 240 has been flow tested.
• The alarm whistle functions properly
• The facemask lens has been cleaned and coated
  with anti-fogging agent.
• The coolant canister has been frozen and
  retrieved from the freezer.

13
PRE-USE INSPECTION

• If the Turn-Around Maintenance Tag is missing,
  The BioPak 240 must be completely inspected to
  assure that all steps of a Turn-Around
  Maintenance have been properly completed.
• The LimePak Absorbent MUST be replaced if the
  Turn-Around Tag is missing.

14
Inspect BioPak 240

• All connections are tight
• Breathing tubes with hose coupler or facemask in
  place.
• WARNING IF THE TURN-AROUND MAINTENANCE TAG IS
  PRESENT ON THE BIOPAK 240, BUT YOU SUSPECT THAT
  THE BIOPAK 240 WAS NOT SEALED PROPERLY, REPLACE
  THE LIMEPAK ABSORBENT!
• IF A HOSE IS FOUND OPEN TO THE ATMOSPHERE, DO NOT
  USE THE BIOPAK REPLACE WITH THE LIMEPAK
  ABSORBENT!

15
Inspect BioPak 240

• Insure O2 cylinder gauge is reading 2700 3000
  PSIG
• Install pre-frozen coolant canister
• Place BioPak 240 unit face up (logo up)
• Unlatch and remove upper housing
• Insert and secure coolant canister with velcro
  strap
• Reposition and latch upper housing

16
Inspect BioPak 240

• Coat the inside of the facemask with the
  antifogging cloth and lightly buff the lens with
  a clean soft cloth until it is clear enough to
  see through.
• Excessive buffing may diminish the anti-fog
  qualities.
• When properly buffed, enough anti-fog should
  remain on the inside lens so that your finger
  will leave a streak if you wipe it across the
  lens.
• The BioPak 240 is now ready for service.

17
Donning the BioPak 240

• Place BioPak 240 face down (logo seal down) with
  top toward you
• Lengthen the shoulder straps so that the free
  ends extend two to three inches
• Grasp the body of the BioPak 240 approximately
  midway between the top and bottom. The shoulder
  straps should be outside your arms.

18
Donning the BioPak 240

• Raise unit over head, bend and guide shoulder
  straps onto shoulders. NOTE BE CAREFUL TO AVOID
  BACK INJURY!
• Lean forward slightly and tighten shoulder straps
  by pulling down and away from the body as you
  straighten up.
• Buckle and adjust waist strap firmly on your
  hips.
• Loosen the shoulder straps to let weight of the
  BioPak 240 rest on your hips, not your shoulders.
• Connect the chest strap do not over tighten
  because it will constrict breathing. NOTE THE
  BIOPAK 240 CAN ALSO BE DONNED USING THE COAT
  METHOD.

19
DON FACEMASK

• Before donning, loosen two upper and two lower
  straps completely
• Place harness over head
• Center your chin comfortably in the facemask chin
  cup
• Holding facemask on your face with one hand, snug
  the bottom strap on one side, then repeat
  operation for the bottom strap on the other side
  of the facemask
• Tighten both upper straps by pulling gently and
  simultaneously
• DO NOT OVERTIGHTEN THE FACEMASK, THIS CAN LEAD TO
  MASK LEAKAGE AND USER DISCOMFORT EXTREME
  HEADACHE!
• CAUTION A POOR FACEMASK SEAL WILL CAUSE A
  SIGNIFICANT DECREASE IN DURATION AND PROTECTION
  FACTORS. BEARDS, OR EYE GLASSES THAT BREAK THE
  FACEMASK SEAL AREA AGAINST OSHA AND MSHA
  REGULATIONS AND VOID THE NIOSH APPROVAL OF THE
  BIOPAK 240.

20
DON FACEMASK

• Perform negative pressure check by blocking the
  inhalation port with your hand and inhaling. If
  you cannot inhale, mask fits good. However, if
  mask leaks when you inhale with the inhalation
  port covered, adjust mask for better fit or check
  exhalation valve.
• Perform positive pressure check by covering the
  exhalation port with your hand and exhaling. If
  you cannot inhale, mask fits good. The facemask
  should be pushed from your face by the pressure
  of your exhalation. If the mask is not pushed
  away, check the inhalation valve.

21
CONNECT THE FACEMASK

• Remove hose coupler and store in carrying case
• Connect inhalation hose (marked with green tape)
  to the mask
• Connect exhalation hose to the mask

22
Donning the BioPak 240

• Perform negative pressure check by blocking the
  inhalation port with your hand and inhaling. If
  you cannot inhale, mask fit is good. However, if
  mask leaks when you inhale with the inhalation
  port covered, adjust mask for better fit or check
  the exhalation valve.
• Perform positive pressure check by covering the
  exhalation port with your hand and exhaling. The
  facemask should be pushed from your face by the
  pressure of your exhalation. If the mask is not
  pushed away, check the inhalation valve

23
Donning the BioPak 240

• Connect the facemask.
• Remove hose coupler or red caps, and store them
  in the carrying case.
• Connect inhalation hose (marked with green tape)
  to the mask.
• Connect exhalation hose to the mask.

24
Donning the BioPak 240

• After the mask is donned and fully connected,
  open the oxygen cylinder valve fully
  counterclockwise and back ¼ turn.
• Listen for alarm whistle "chirp."
• If alarm whistle does not work, obtain another
  BioPak.

25
Donning the BioPak 240

• Verify chest-mounted pressure of 2700-3000 PSIG.
  Note It is normal for the gauge to take up to a
  minute and a half to come up to full pressure due
  to the flow Restrictor in the gauge line
• Tear off the Turn-Around Maintenance Tag.

26
Speaking Diaphragm Use

• Talk a little louder than normal.
• Don't shout.
• Enunciate words.
• Speak clearly and slowly
• DO NOT TALK FAST.

27
Normal BioPak Operation.

• The user must be familiar with the normal
  conditions that occur while. Using the BioPak
  240.
• Depending on the activity level of the user and
  the surrounding temperature, the BioPak 240 may
  provide somewhat warmer and more humid gas than
  conventional open-circuit, pressure demand type
  devices.
• The BioPak operates at approximately 100
  humidity.
• The moist breathing gas mixture also helps to
  keep the user's mucous membranes from drying out.
  
• This makes the wearer more comfortable and
  prevents dry, sore throats that are often a side
  effect of using air bottles

28
Emergency Operation

• The Emergency Bypass Valve is used manually to
  supply oxygen to the breathing chamber in the
  event of failure of the Demand Valve or Flow
  Restrictor.
• If inhalation resistance increases due to the
  depletion of the breathing gas supply in the
  breathing chamber, add a 2-second burst of oxygen
  by pushing the Bypass Valve button.
• Add additional bursts as required to maintain an
  adequate supply of breathing gas.

29
Emergency Operation

• WARNING The Bypass Valve is intended for
  emergencies only and WILL NOT clear facemask
  fogging. WASTEFUL use of the Bypass Valve
  seriously reduces the duration of the BioPak 240.

30
Emergency Actions

• Equipment failure, such as a blocked line.
• Try Bypass, exit area and obtain another BioPak.

31
Emergency Actions

• Severed pressure gauge.
• Exit area and obtain another BioPak.

32
Emergency Actions

• "Over-Actuation" of Demand Valve inside BioPak.
• Leak in system - exit area and obtain new BioPak.
  Bad facemask seal - adjust facemask fit.

33
Emergency Actions

• User warning symptoms that require immediate
  attention.
• Any feeling of nausea, dizziness or illness.
• Rapid pressure drop on chest-mounted gauge.
• Any difficulty inhaling or exhaling. Smoke or
  other contaminants in the facemask.
• If any of these signs are present, EXIT THE
  CONTAMINATED AREA IMMEDIATELY !

34
Emergency Actions

• Regulator failure.
• The regulator is designed to fail open. While
  extremely rare, regulator failure may be detected
  as excess pressure in the facemask and constant
  venting of excess pressure by the Relief Valve
  with every breath. This will result in a drastic
  decrease in available working time. If in the
  rare instance the regulator were to fail open,
  close the oxygen cylinder immediately, then on
  every fifth breath, open and close the cylinder
  momentarily as you exit the area. A failing
  regulator will also be identified by a high flow
  during the "Flow Test" part of the "Turnaround
  Maintenance."

35
Doffing the BioPak 240

• WARNING Most breathing apparatus malfunctions
  are directly traceable to careless handling after
  use. Many years of trouble-free operation are
  possible if reasonable care is given to the
  BioPak 240.
• Coat Method.
• Close oxygen cylinder valve.
• Remove facemask by pushing forward on two lower
  release buckles and continue pushing forward and
  upward to lift the facemask over the head.
• Unfasten chest and waist straps and lean forward
  slightly at the waist.
• Loosen one shoulder strap, and then allow the
  other shoulder strap to slide from the other
  shoulder while swinging the BioPak 240 around
  your front.
• Remove unit and set it down.

36

• Over-The-Head Method Close oxygen cylinder
  valve.. Remove facemask by pushing, forward on
  the two lower release buckles and continue
  pushing forward and upward to lift the facemask
  over the head. Unfasten chest and waist straps.
  Loosen shoulder straps. Grab carrying strap and
  lift BioPak 240 over your head.

37

• Perform the Turn-Around Maintenance as outlined
  in Section Ell before reuse. Store the unit in
  its carrying case or other safe location. DO NOT
  STORE IN AN EXCESSIVELY WARM OR COLD ENVIRONMENT
  (store between 32F and 85F, OC and 30C).

38
TURN-AROUND MAINTENANCE

• Perform the Turn-Around Maintenance procedures as
  soon as possible after each use of the BioPak 240
  as outlined below.

39
A. BioPak 240 Disassembly

• Before disassembling the BioPak 240, make sure
  the outside of the BioPak 240 is clean, so that
  the inside of the breathing gas loop is not
  contaminated. Clean the harness and exterior
  parts of the BioPak 240 with a sponge and a mild
  soap solution, then wipe dry.
• a. Place the BioPak on a flat surface and remove
  the case cover.
• b. Slide the breathing chamber cover snap latches
  away from the four retainer pins and remove the
  cover by pressing it up around the edges with
  your fingers and down with your thumbs on the
  breathing hose connections (using the same method
  to remove the absorbent canister as illustrated
  below). DO NOT PRY UP ON THE LID WITH A
  SCREWDRIVER. This will result in damage to the
  0-ring and Breathing Chamber.
• c. Lift the carbon dioxide absorbent canister
  from the BioPak 240 by pressing it up around the
  edges of the plastic rim with your fingers and
  down with your thumbs on the breathing chamber.

40
A. BioPak 240 Disassembly

• d. Remove the canister cover by sliding the cover
  snap latch away from the retainer set pin and
  lifting the cover.
• e. Remove the filter pad, empty the contents of
  the canister into the trash (use LimePak is
  essentially just limestone) and wipe the canister
  clean of particles. THE ABSORBENT MUST BE
  REPLACED EACH TIME THE BIOPAK 240 HAS BEEN USED
  OR THE OXYGEN CYLINDER REQUIRES REFILLING. The
  absorbent has a dye indicator in it for use in
  medical applications. This dye may turn the foam
  pad purple, but this is normal. USE THE
  ABSORBENT ONLY ONCE AND THEN THROW IT AWAY! BY
  THE TIME IT HAS CHANGED COLOR, THE ABSORBENT HAS
  LONG SINCLE LOST ITS ABILITY TO ADEQUATELY REMOVE
  CARBON DIOXEDE! DO NOT REUSE THE ABSORBENT!

41
A. BioPak 240 Disassembly

• f. After removing the carbon dioxide absorbent
  canister, check the sealing 0Rings inside and
  outside perimeter of the absorber well for
  abrasions or cuts. Wipe the O-Rings with a clean
  cloth to be sure they are clean and dry, and then
  apply a thin film of lubricant to them. CAUTION
  CRISTO-LUBE (MCG-111) OR SILICONE (DOW-111)
  LUBRICANT MAY BE USED ON THESE LARGE O-RINGS. DO
  NOT USE AN OIL-BASED LUBRICANT. DO NOT USE
  DOW-111 ON HIGH PRESSURE OXYGEN LINES.
  Maintaining adequate lubrication on the large
  O-Rings will help assure proper performance and
  prevent premature failure
• g. Wipe out any particles of carbon dioxide
  absorbent remaining in the canister well. NOTE
  IT IS RECOMMENDED THAT THE OXYGEN CYLINDER REMAIN
  IN THE DIOPAK 240 THROUGHOUT DISINFECTING
  PROCEDURES. THIS WILL PREVENT WATER AND
  CONTAMINANTS FROM ENTERING THE REGULATOR DURING
  DISINFECTING (a regulator dust cap is available).

42
SCOTT AV-2000 FULL FACEPIECE

• WARNING THE AV-2000 FULL FACEPIECE ASSEMBLU IS
  INTENDED FOR USE ON RESPIRATORS WHICH MAY SUPPORT
  HUMAN LIFE IN HAZARDOUS ATMOSPHERES. FAILURE TO
  READ, UNDERSTAND, AND CAREFULLY FOLLOW THESE
  INSTRUCTIONS WHEN CLEANING, DISASSEMBLING OR
  REASSEMBLING THE FACEPIECE OR ASSOCIATED HEAD
  HARNESS ASSEMBLY AND/OR FAILURE TO CHECK YOUR
  WORK AS INSTRUCTED HEREIN MAY RESULT IN SERIOUS
  INJURY OR DEATH.

43
NORMAL CLEANING

• TOOLS REQUIRED
• WASHING IMPLEMENTS (SPONGE, SOFT CLOTH ETC.)
• MATERIALS REQUIRED
• MILD SOAP OR DETERGENT AND A DISINFECTING
  SOLUTION (A 70 SOLUTION OF ISOPROPYL ALCOHOL IS
  RECOMMENDED)

44
CAUTION

• CERTAIN CLEANING AND DISINFECTING AGENTS SUCH AS
  QUATERNARY AMMONIUM COMPONDS (AMMONIUM CHLORIDES)
  MAY CAUSE DAMAGE, DETERIORATION OR ACCLERATED
  AGING TO PARTS OF THE AV-2000. USE ONLY THE
  RECOMMENDED CLEANING AND DISINFECTING AGENTS.
• THE LENS OF THE AV-2000 IS HARD COATED TO RESIST
  ABRASION, DO NOT USE A VAPOR POLISHER.
• DO NOT AUTOCLAVE THE AV-2000 FACEPIECE
• DO NOT POLISH THE LENS WITH PAPER TOWELS MOST
  PAPER TOWELS CONTAIN ABRASIVES.
• AVOID ABRASIVE CLEANERS, ACETONE, PAINT AND
  LAQUER THINNERS, BENZENE, DRY-CLEANING FLUID,
  STRONG PHENOL, AND CRESOL SOLUTIONS.

45
CLEAN THE MASK AS FOLLOWS

• THE AV-2000 IS NORMALLY CLEANED AND INSPECTED
  AFTER EACH USE.
• CAREFULLY INSPECT FACEPIECE AND HEAD HARNESS FOR
  AGING RUBBER PARTS, AND WORN, DAMAGED, MISSING OR
  LOOSE COMPONENTS. IF DEFECTIVE OR MISSING
  COMPONENTS ARE FOUND, EITHER REPLACE THEM IN
  ACCORDANCE WITH THE APPROPRIATE SECTION OF THE
  MANUAL, OR REMOVE THE FACEPIECE FROM SERVICE AND
  TAG FOR REPAIR.

46
CLEAN THE MASK AS FOLLOWS

• NOTE THE NOSECLIP AND HEAD HARNESS DO NOT
  REQUIRE REMOVAL DURING NORMAL CLEANING. IF
  REMOVAL OF THESE COMPNENTS IS DESIRED, SEE
• SECTION 2 OF THE MANUAL FOR REMOVAL AND
  REPLACEMENT OF THE NOSECUP ASSEMBLY AND
  INHALATION VALVES,
• SECTION 3 FOR REMOVAL AND REPLACEMENT OF
  VOICEMITTER, AND
• SECTION 4 FOR REMOVAL AND REPLACEMENT OF THE HEAD
  HARNESS ASSEMBLY.

47
CLEAN THE MASK AS FOLLOWS

• CAREFULLY WASH THE FACEPIECE ASSEMBLY USING ONE
  OF THE FOLLLOWING METHODS
• WASH WITH WARM (110F MAXIMUM) MILD SOAP OR
  DETERGENT SOLUTION THOROUGHLY RINSE IN
  CLEANWATER. TO DISINFECT, SPONGE FACEPIECE WITH
  70 SOLUTION OF ISOPROPYL ALCOHOL.

48
CLEAN THE MASK AS FOLLOWS

• OR CLEAN AND DISINFECT USING SCOTT MULTI-WASH
  MINI. FOLLOW INSTRUCTION 89346-01 SUPPLIED WITH
  SCOTT MULTI-WASH MINI.
• NOTE THE KEVLAR AND NYLON HEAD HARNESSES ARE
  MADE OF PORUS MATERIAL. SCOTT MULTI-WASH MINI MAY
  NOT BE EFFECTIVE ON PORUS MATERIAL

49
CLEAN THE MASK AS FOLLOWS

• THOROUGHLY RINSE WITH DRINKING WATER USING A
  SPRAY BOTTLE OR SOFTLY RUNNING WATER. SHAKE
  EXCESS WATER OFF AND THEN DRY WITH A CLEAN, LINT
  FREE CLOTH OR GENTLY BLOW DRY WITH CLEAN, DRY
  BREATHING AIR OF 30 PSIG OR LESS PRESSURE. DO NOT
  USE SHOP AIR OR ANY OTHER AIR CONTAINING
  LUBRICANTS OR MOISTURE.

50
CHECK YOUR WORK!

• CAREFULLY INSPECT FACEPIECE AND HEAD HARNESS FOR
  AGING RUBBER PARTS, AND ALSO FOR WORN, DAMAGED,
  MISSING OR LOOSE COMPONENTS.
• DO NOT USE THE FACEPIECE IF COMPONENTS ARE WORN,
  DAMAGED, MISSING OR LOOSE. REMOVE THE FACEPIECE
  FROM SERVICE AND TAG FOR REPAIR. FOLLOW THE
  APPROPRIATE SECTION OF THE MANAUL FOR PART
  REMOVAL AND REPLACEMENT.

51
B. Washing Disinfecting

• Before disinfecting the BioPak 240, make sure the
  outside of the BioPak 240 is clean, so that the
  inside of the breathing gas loop is not
  contaminated. Clean the harness and exterior
  parts of the BioPak with a sponge and a mild soap
  solution, then wipe dry.
• a. Remove the facemask and hoses from the BioPak
  240 by unscrewing the hose couplings.
• b. Prepare a disinfecting solution by adding
  1packet of Quatsyl-256 Disinfectant agent
  (B6-02-5000-42-0) per a gallon of warm water
  (90-100F, 32-38C). The packet and its
  contents must fully dissolve in the water. Only
  Quatsyl-256 may be used. DO NOT USE ALCOHOL OR
  CHLORINE AS A GERMICIDE THEY CAN DETERIORATE
  LENS AND RUBBER PARTS.

52
B. Washing Disinfecting

• c. First clean the facemask, hoses, breathing
  chamber lid, and coolant canister with
  disinfectant. These parts may be immersed in the
  disinfectant, and then rinsed
• d. Rinse all of the above items with fresh water
  several times and allow them to air dry or
  carefully blow dry them with a portable hair
  dryer on the "cool" setting.
• e. Pour approximately 1 quart (or 1 liter) of
  disinfecting solution through the short Coolant
  Canister hose. Capping the end of the tube with
  your hand, move the tube up and down to
  thoroughly coat the inside of the tube and its
  corrugations with disinfectant. Allow the
  disinfectant to flow into the Breathing Chamber.

53
B. Washing Disinfecting

• f. Repeat previous step using the Exhalation
  Hose. Take care to protect the Flow Restrictor
  Assembly from getting wet. Minerals in water can
  deposit on the Flow Restrictor and can severely
  limit its flow. Use a finger cot (B5-07-300700-0)
  to protect the top of the Flow Restrictor.
• g. Rotate the BioPak 240 several times to agitate
  the solution in the Breathing Chamber, thoroughly
  coating its top, bottom and sides. You should see
  bubbles of disinfectant appear in the vents
  around the edge of the Breathing Chamber.
• h. Pour the solution out of the Breathing
  Chamber.
• i. Repeat Steps (e) through (g) using fresh water
  rinse. Repeat rinse second time. Allow to air
  dry, or carefully dry with a portable hair dryer
  on the "cool" setting. Immerse the Absorbent
  Canister, Absorbent Canister Sponge Filter, and
  the Absorbent Canister Lid in the disinfectant.
  Wait until all other components are sanitized so
  that any absorbent dust left in the canister does
  not get onto the other parts of the BioPak. Be
  sure to squeeze disinfectant through the sponge
  filter.

54
B. Washing Disinfecting

• k. Repeat step (j) using a fresh water rinse.
• l. Examine the facemask and hoses for cuts or
  other damage.
• m. Check off "WASHING/DISINFECTING" on the BioPak
  240 TURNAROUND MAINTENANCE tag.

55
c. Oxygen Cylinder Replacement

• Remove the Oxygen Cylinder. WARNING Always allow
  a minimum of 30 seconds after closing the
  cylinder valve for the system to bleed down
  before disengaging the oxygen cylinder. Pressing
  the Bypass Valve to relieve the pressure may
  quickly bleed the system down.
• a) Disengage the oxygen cylinder from the
  regulator yoke assembly.

56
Install the Oxygen Cylinder

• a. Install a new oxygen cylinder or refill the
  cylinder just removed. The cylinder is supplied
  with a standard medical valve (requiring a CGA
  870 yoke) and can be refilled where medical
  oxygen cylinders are filled. A transfill valve
  (B6-025000-43-0) is available from Biomarine or
  its local distributor for alternative refilling
  methods. Reference Appendix A, Oxygen Cylinder
  Filling Procedure.
• b. Make sure the Stat-O-Seal is clean, Dry, Free
  of any contaminants, and is seated properly on
  the regulator assembly.
• c. Make sure that the valve assembly of the
  oxygen cylinder is CLEAN OF ANY LUBRICANT AND
  DIRT. Insert the valve assembly of the oxygen
  cylinder through the regulator assembly.

57
Install the Oxygen Cylinder

• d. While supporting the bottom of the cylinder
  with your hand, seat the valve assembly of the
  oxygen cylinder on the regulator assembly.
• e. Carefully tighten the yoke screw that holds
  the oxygen cylinder to the regulator. Make
  certain the pointed end of the Yoke Screw is
  seated in the dimple on the cylinder's valve
  stem.
• f. Tighten the Velcro strap on the oxygen
  cylinder.

58
Install the Oxygen Cylinder

• g. Open the valve on the cylinder. If a leak is
  heard, repeat steps (b) through (f). If the
  cylinder continues to leak at the regulator,
  replace the Stat-O-Seal (B3-030006-01-0)
• h. Hold the BioPak 240 upright, shake unit
  vigorously.
• i. Verify the whistle chirp if cylinder leaks,
  tighten yoke screw and/or repeat steps (b)
  through (g).

59

• j. Make certain oxygen cylinder is completely
  turned off for storage.
• k. Check off OXYGEN CYLINDER REPLACEMENT on the
  BioPak 240 TURN-AROUND MAINTENANCE tag.

60
D. Flow Test

• The oxygen constant flow is preset at the factory
  to 1.78 LPM at an oxygen cylinder pressure of at
  least 1500 PSIG. To check the flow
• a. Remove the outer case cover, the Breathing
  Chamber Lid, and the C02 Absorbent Canister.
  This exposes the Flow Restrictor, which is the
  topside of the Demand Valve Assembly.
• b. Slip the BioPak Flowmeter (B6-02-5000-16-0)
  over the Flow Restrictor. c. Using a wooden
  tongue depressor, hold the diaphragm away from
  the Demand Valve.
• d. Open the refilled oxygen cylinder valve and
  measure the flow. At 3000 PSIG (2400 PSIG for the
  BioPak 240PA), the flow should be at least 1.78
  LPM at sea level, adjusted for the user's local
  geographic elevation. Typically the flow should
  be approximately 1.9 LPM with the cylinder at
  3000 PSIG. If not, see the Troubleshooting
  Section of this manual.
• e. Check off FLOW TEST on the BioPak 240
  TURN-AROUND MAINTENANCE tag.

61
E. Carbon Dioxide Absorbent Replacement

• a. Use the disinfected and dried absorbent
  canister (unless the unit is being turned around
  for immediate reuse by the same operator)
• b. Using a LimePak keg (B6-02-5000-32-0), refill
  the canister with absorbent (approximately 3.9
  lbs. or 8.6 kg.) to the fill line indicated.
  Shake the canister back and forth on a tabletop
  to settle the granules and distribute the
  particles so that the surface is level with the
  fill line marking inside the canister. Add more
  LimePak if required.

62
E. Carbon Dioxide Absorbent

• E. Carbon Dioxide Absorbent IMPORTANT NOTE DO
  NOT EXPOSE THE C02 ABSORBENT TO THE ATMOSPHERE
  FOR MORE THAN A TOTAL OF 1 HOUR DURING RECHARGING
  AND/OR SERVICING. IF A BIOPAK 240 HAS BEEN
  STORED FOR MORE THAN 1 YEAR, THE C02 ABSORBENT
  MUST BE REPLACED AND THE OXYGEN PRESSURE CHECKED
• IMPORTANT NOTE THE LIMEPAK KEG HAS A SHELF LIFE
  OF FIVE (5) YEARS WHEN SEALED. THE KEG OF
  LIMEPAK HAS A SHELF LIFE OF ONLY ONE (1) YEAR
  AFTER THE SEAL ON THE KEG HAS BEEN BROKEN. MARK
  THE DATE OF OPENING ONTO THE TOP OF THE KEG WITH
  INDELIBLE MARKER WHEN A NEW KEG IS OPENED!

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• c. Check to make sure that the sponge filter is
  not compressed. Remember that the sponge filter
  is used to keep the absorbent in place so that it
  does not shift and lead to channeling. Replace
  with a new sponge filter if the old filter is
  less than 1/8" of an inch thick over the
  absorbent or less than 1/32 of an inch at the
  edges (replace any filter that does not overlap
  the edge of the tray). Reinstall the filter,
  replace and lock the canister cover. The foam
  filter should push slightly through the holes in
  the stainless canister cover. If it does not,
  check the filter and add more LimePak.
• d. With the stainless cover down and locked,
  shake the absorbent canister hard. You should not
  hear movement of the absorbent.
• e. Press the canister into place in the well and
  replace the Breathing Chamber Cover. Insure that
  the 4 cover snaps engage properly. CAUTION
  CRISTOLUBE (MCG-11) OR SILICONE (DOW-111) MAY BE
  USED ON THESE LARGE O-RINGS. DO NOT USE AN OIL
  BASED LUBRICANT. DO NOT USE DOW-111 ON IHGH
  PRESSURE OXYGEN LINES. Maintaining adequate
  lubrication on the large O-Rings will help assure
  proper performance and prevent premature failure.
  
• f. Check off CARBON DIOXIDE ABSORBENT
  REPLACEMENT on the BioPak 240 TURN-AROUND
  MAINTENANCE tag.

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F. Reassemble the BioPak

• a. Install coolant canister without insert (which
  is stored in the freezer).
• b. Reconnect all the hoses and place a cap plug
  in each open hose end, or connect the hoses
  together with the hose coupler (B2-02-1300-1
  1-0).
• WARNING IT IS CRITICAL THAT THESE CAPS BE PUT IN
  THE HOSES OR THE COUPLER BE USED TO CONNECT BOTH
  HOSES. IF A HOSE REMAINS OPEN TO THE ATMOSPHERE,
  THE BIOPAK 240 CANNOT BE USED BECAUSE THE CARBON
  DIOXIDE ABSORBENT MAY BE EXPENDED.
• c. Replace the BioPak 240 cover, and return the
  unit to the carrying case or other safe place.

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G. Anti-Fog Agent Application

• a. Coat the inside of the facemask with the
  anti-fogging cloth (B6-02-5000-08-0).
• b. Lightly buff the lens with a clean, soft cloth
  until it is clear enough to see through.
  Excessive buffing may diminish the anti-fog
  qualities. When properly buffed, enough Anti-fog
  should remain on the inside of the lens so that
  your finger will leave a slight streak if you
  wipe it across the lens.
• NOTE THE PROPER APPLICATION OF ANTI-FOG AGENT IS
  CRITICAL TO THE OPEATION OF THE BIOPAK 240.
  BECAUSE OF THE LONG DURATION OF ITS USE, THE
  BIOPAK 240 IS PRONE TO FOGGING. IT IS SUGGESTED
  THAT THE ANTI-FOG AGENT ALSO BE APPLIED BEFORE
  EACH USE.
• c. Check off ANTI-FOG AGENT APPLICATION on the
  BioPak 240 TURN-AROUND MAINTENANCE tag.

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H. Coolant Canister Insert

• a. Place the clean, disinfected, dry coolant
  canister insert in a deep freezer in a horizontal
  position for at least 8 hours at less than 15ºF
  (-10ºC).
• b. Check off PLACE COOLANT CANISTER IN FREEZER
  on the BioPak 240 TURN-AROUND MAINTENANCE tag.

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I. Turn-Around Maintenance Tag

• a. Make sure that all the boxes are checked off
  on the BioPak 240 TURN-AROUND MAINTENANCE tag
• WASHING/DISINFECTING
• OXYGEN CYLINDER REPLACEMENT
• FLOW TEST
• CARBON DIOXIDE ABSORBENT REPLACEMENT
• ANTI-FOGGING AGENT APPLICATION
• PLACE COOLANT CANISTER IN FREEZER
• b. Sign and date the Turn-Around Maintenance Tag.
  
• c. Secure the Turn-Around Maintenance Tag, which
  comes with each keg Of C02 Absorbent
  (B6-02-5000-32-0), to the oxygen cylinder valve.