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HELiOS® Portables - Chart Industries

1. 6 Verify that there is no oxygen flow from the unit and the 20 Disconnect the cannula flow meter reads O 7 Disconnect the calibrated flow meter NOTE If continuous flow does not occur at these flow settings reset the demand valve by blowing across not into the bottom 8 Connect the Jet Venturi assembly B 778210 00 to the bot cannula barb or by attaching a dual lumen cannula to the bottom tom cannula barb on the front of the H300 or H850 cannula barb and breathing in once or twice 9 Connect the DISS nut and tailpiece of the Jet Venturi assem Table 7 H300 Flow Tolerance bly to a 0 6 90 bar 0 100 psi source of gaseous oxygen Flow Specification Acceptable Sie ey LPM Range LPM o Noe oo oo Figure 46 Jet Venturi Assembly Attachment Tail Flow 0 60 0 90 NOTE Do not block the open bleeds on the Jet Venturi assem Tail Flow 0 85 1 15 bly This can cause damage to the flow control valve Tail Flow 130 170 10 Slowly increase the pressure of the gaseous oxygen source Tail Flow 1 40 1 90 until a continuous flow comes from the top cannula barb 4 Tail Flow 1 70 2 30 11 Reconnect a calibrated flow meter as described in step 4 12 Check the demand inspiration tailflow at each demand flow setting Verify that they are within the ranges listed in Table 7 H300 or Table 8 H850 13 Disconnect the Jet Venturi assembly from the unit HELIOS Portables Technical Service Manual P
2. b Secondary Relief Valve Test RP8 c Liquid Leak Detector Test RP2 5 Fill the unit full of liquid oxygen 6 a Verify that the spring scale reads full Inspect the outer container for cold sweaty conditions and excessive venting from the relief valve c NER Test RP22 d Economizer Test RP9 e Demand Flow Control Valve Test RP19 Prepare For Use dl o SO NMSAH a Empty the liquid oxygen from the unit b Verify that the contents indicator scale reads empty HELIOS Portables Technical Service Manual PN 20562190 Rev C io X Maintenance Schedule A Biennial Maintenance Checklist Unit Serial Number LOX Purged From Reservoir Repair Procedure RP3 Performed or Verified By Date Inpection for Damaged Missing Parts Performed or Verified By Date Contents Indicator Reads Empty and Spring Scale Moves Performed or Verified By Date Freely 4 Remove Cover Repair Procedure RP4 Performed or Verified By Date O ee NN 5 Perform Liquid Leak Detector Test Repair Procedure Performed or Verified By Date NS RP2 PAN TY O Pesar ts OT p e AT 1 2 3 IE rr LEE Y mo e or o 2 D N Sedes savReseatPresue loo hoho lo Liquid Contents Level Indicator Test Repair Procedure traia IO AO O O RP6 a o a Empty And Completely Green When Full Pressure Rtenion Te tear Procure Pi PefomedorveedBywe pp aa ear o repre reparten Pefrmedorverea9yDa0 fo po lo lo 11 Flow
3. Ay liquid oxygen thane tube from the inlet barbed fitting of the inline check valve y 3 Allow the unit to sit undisturbed for 1 2 hours to allow it to Ci stabilize at its PRV pressure 3 Use a 5 8 inch open end wrench to remove the nut that se cures the quick connect to the front cover 4 Record the initial weight w1 of the unit and the time this weight was measured 4 Pull the quick connect down and out of its mounting hole 5 Allow the unit to sit undisturbed for 5 6 hours 5 Remove the urethane tube from the barb on the quick con nect 6 Record the final weight w2 of the unit and the time this weight was measured 6 Install the new quick connect by reversing steps 1 5 7 Calculate the NER the weight of contents that evaporates per day using the formula below RP24 Inline Check Valve R R wawi he r ER 1 Remove the case RP4 24 l 2 Use a small flat head screwdriver to carefully pry the ure 8 Verify that the NER is within the specifications listed in thane tube from the inlet barbed fitting of the inline check Table 4 valve 3 Use a small flat head screwdriver to carefully pry the ure thane tube from the outlet barbed fitting on the inline check valve 4 Install the new inline check valve by reversing steps 1 3 HELIOS Portables Technical Service Manual PN 20562190 Rev C bon AA Troubleshootinc RP25 Compression Fitting Nut amp Ferrule Replacement 1 Inspect the tube end
4. b Cannula is blocked or kinked P E P P the cannula 1f necessary ai Cannula tips not positioned prop Ensure the cannula remains in the nostrils and do not slide to one erly in the nose side Patient 1s breathing with their l taga d 8 Patient must inhale through their nose to initiate continuous flow mouth open Reference symptom 14 Inspect the saturation pressure of the res ervoir used for filling Allow at least 30 minutes at no flow for the portable to saturate properly Faulty FCV Test the FCV RP19 and replace RP20 if necessary Inspect the saturation pressure of the reservoir used for filling ously on demand a Saturation Pressure is too high Allow at least 30 minutes at no flow for the portable to saturate settings properly Faulty FCV Test the FCV RP19 and replace RP20 if necessary Inspect the saturation pressure of the reservoir used for filling a Saturation Pressure is too high Allow at least 30 minutes at no flow for the portable to saturate properly Leak in the system can a leak check on the plumbing RP2 Repair leaks as nec Ensure that there is no venting from the relief valves If there is c Relief valve open refer to the corrective actions for Excessive venting from relief valves hissing sound d Partial or complete loss of vac Conduct the NER test RP22 and return the unit to CAIRE Inc if uum necessary Some frost on the outer case and on the plumbing is acceptable especial
5. occur 10 The unit is full when the hissing sound changes in tone and a dense white vapor is seen coming from the under the shroud of the reservoir When this is observed close the vent valve by releasing and raising its lever 11 Hold the handle on the H300 or H850 and push the release button on the reservoir down until the fill connectors separate NOTE If the H300 or H850 does not separate easily do not use force The units may be frozen together Allow the units a few minutes to warm up and they should separate easily dd o OE WARNING Should there be any leakage from either the reser voir or the portable after separation engage the fill connectors again immediately Engaging and disengaging the connectors will help to dislodge any ice crystals that are present If major leaking and discharge continues open the vent valve of the res ervoir to stop the release of liquid oxygen WARNING Do not touch frosted parts 12 Check the contents indicator scale to make sure that the unit is filled to the desired level Liquid Level Measurement 1 Lift the H300 or H850 by the contents indicator strap 2 Push the bottom backside of the unit forward to that it is straight up and down 3 Observe the green indicator bar that displays the liquid oxy gen contents level inside the clear window on the back of the unit The window is completely filled with the green bar when the unit is full Operation Filled with Li
6. 1 59 bar 20 5 23 0 psi replace the R E valve RP10 16 Reassemble the unit by reversing steps 1 12 RP9B Economizer Test H850 1 Make sure the unit has been leak tested RP2 2 Fill the H850 from a properly saturated source of liquid oxy gen 3 Remove the case RP4 4 Set the unit on the portable test fixture 5 Stand the front cover with tubing connected next to the bot tle assembly as shown in Figure 19 6 Allow the unit to sit undisturbed for 30 minutes to stabilize at its primary relief valve setting 7 Disconnect the flexible vent tube from the barbed fitting on the vent valve 8 Connect a test pressure gauge to the vent valve barbed fitting and secure it with a tie wrap 9 Prop the vent valve lever in the open position using a 3 16 in 0 48 cm tubing spacer nut Verify that the test pressure gauge reads 1 79 2 07 bar 26 30 psi and that the primary relief valve is venting 10 Set the flow control knob to a setting of C6 NOTE The H850 must deliver continuous flow to test the econo mizer valve 11 Check the reading on the test pressure gauge every 5 minutes until the pressure stabilizes Stabilization occurs when two consecutive pressure readings are within 0 069 bar 1 psi of each other 12 If the economizer pressure is not within 1 53 1 71 bar 22 25 24 75 psi replace the R E valve RP10 13 Reassemble the unit by reversing steps 1 9 HELIOS Portables Technical Servic
7. BF Electrical Safety HELIOS Portables Technical Service Manual PN 20562190 Rev C 2 18 Table of Contents Preface 00 0 ees 2 Il Table of Contents oooooooooooo o 3 Il Safety 0 0 eee 3 5 IV Equipment Description 6 V Theory of Operation 7 10 VI Specifications o o ooooooooooo o 11 VII Saturation Principles 12 14 Vill Unpacking and Setup 15 IX Operation n on aaa 16 18 X Maintenance cee ee ee 19 22 XI Troubleshooting amp Repair Procedures 23 50 XIIL Parts List 0 0 aaa 51 XIII Ordering Informati0N 52 XIV Return amp Restocking Policy 53 XV Service Tools Equipment Supplies 54 55 HELIOS Portables Technical Service Manual PN 20562190 Rev C D8 ol BISE SO NMSAH Safety Guidelines and Operational Safety Oxygen as it exists at standard atmospheric pressure and tem perature is a colorless odorless and tasteless gas Oxygen con stitutes 21 of the atmosphere by volume Aside from its well documented ability to sustain life oxygen also supports combus tion even though it is nonflammable Many substances which will burn in air burn at a faster rate and at a higher temperature in an oxygen enriched atmosphere Other materials that do not burn in air will burn as oxygen concentration increases A
8. Bleed Port Vacuum Tube Needle Valve DISS Fitting Figure 24 Jet Venturi assembly HELIOS Portables Technical Service Manual PN 20562190 Rev C 3 i Troubleshooting amp Repair Procedures RP4 Cover Removal L mi 1 Empty the unit RP3 O N 2 Place the unit on its side with the rear cover facing you yi Ay 5 3 Use a T10 Torx driver to remove the Torx screws 7 in the y H300 10 in the H850 from the rear cover o D Mm 4 Pull both legs of the carrying handle away from the covers simultaneously 1 Fi 26 H iner R l 5 Separate the rear cover about 3 4 in 2 cm from the front AN O Oya cover and then slide it down about 3 4 in 2cm NOTE Use the two longer cover screws in the top two screw 6 Rotate the cover counterclockwise until the vent valve le holes Do not over tighten the screws ver can be pulled thought the clearance opening in the rear en NOTE Make sure that the two indexing pins on the front of the demand flow control valve engage the corresponding index holes Te T RE ON E Ser VUO E E VEDEA E se in the front cover Center the container assembly in the front BODE COVED NG a ORE NC MONLCONET cover mounting bosses Ensure that the container liquid with drawal tube is not pinched between the front cover and the fill 8 Carefully lift the container assembly up and away from the oca front cover and place 1t on the table next to the cover 9 Re install the case by reversin
9. Make sure that it is cut square and that the outside surface is free of scratches or other marks at least 1 in 25 mm back from the tube end 2 Lightly buff the tube end with a Scotch Brite pad or fine emery paper to remove any surface marks 3 Make sure the tube end is bottomed against the tube stop in the fitting body This is necessary to prevent movement of the tube while the nut forces the ferrule to grip the tube and create a seal 4 Hold the fitting body stationary with an open end wrench while tightening the tube nut with a second wrench 5 Tighten the tube finger tight 6 Using an open end wrench tighten the nut beyond finger tight a For 1 4 in 0 64 cm diameter tubing tighten the nut and additional 1 amp 14 turns b For 1 8 in 0 32 cm or 3 16 in 0 48 cm diameter tub ing tighten the nut an additional 34 turn Body Nut Body Nut aan Dl im ae Ferrule Figure 48 Compression Fitting 1 Simultaneously pull on the tube and pry the end of the tube amp Repair Procedures RP26 Flexible Tubing Replacement Use a small flat blade screwdriver to carefully back the brass collar when used off of the barbed fitting Work the screwdriver between the end of the tube and the fitting body dd o SO NMSAH back from the barb Inspect the end of the new tube Be sure that the end is cut square and that
10. PN 20562190 Rev C D8 neration Cryogenic Container The H300 amp H850 cryogenic container is designed to slow the transfer of heat from the atmosphere to the liquid oxygen con tents The contents of H300 amp H850 portables are contained within a double walled vacuum insulated cryogenic container The liquid oxygen is stored in an inner container that is suspended within an outer container Air is removed from the space between the two containers to minimize heat transfer between the warm outer tank and the cold inner tank This is achieved by applying a vacuum though the outer container s vacuum port In addition to the vacuum insulation a molecular sieve is placed within the vacuum space against the inner container to absorb any moisture or gas molecules that remain in the vacuum space Also the inner containers of the H300 amp H850 are wrapped in multiple layers of an aluminum foil and fiberglass paper insula tion to reflect radiant energy and minimize heat transfer The unique design of cryogenic container and the location of the Liquid Withdrawl Tube Gas Withdrawl Nga Vent Tube Outer Container Insulation Inner Container Fill Tube Molecular Sieve Figure 4 Cryogenic Container Design gas withdrawal tube allow the unit to be operated safely on its back If the H300 or H850 is laid flat on its back liquid oxygen will not escape and be discharged The unit can be operated up right flat on it
11. Properly position the nasal cannula on the patient Turn the flow control knob on the top of the unit to the pre scribed demand flow setting WARNING Use only the recommended flexible oxygen supply tube and oxygen gas source Connecting the unit to an incorrect gas source can cause inhalation of hazardous substances CAUTION Connect the portable only to a reservoir or other gaseous oxygen source that operates at pressures between 1 41 to 1 62 bar 20 5 and 23 5 psi Oxygen sources outside of this S9 8110d SO 13H range can cause the unit to operate improperly or damage the unit NOTE The H850 must be used in demand D flow settings when operating from the oxygen supply line PN 20562190 Rev A52190 Rev C 23 Operation Exterior Cleaning 8 Disinfecting The H300 or H850 external case should be cleaned whenever dirt or grime is visibly evident It can also be disinfected in accordance to local regulations and or the schedule of the indi vidual DME provider The below procedure should be followed for both cleaning and disinfecting the outer case of the H300 or H850 1 Verify that the unit is empty and contains no liquid oxygen 2 Apply a mild cleaning solution and or disinfectant to a clean cloth Wipe the exterior case using this cloth Table 5 below is a list of recommended cleaners and disinfectants Table 5 Recommended Cleaning amp Disinfecting Agents Cleaning Disinfecting Sporicidin Disinfectant
12. Rate Test Repair Procedure RP19 Performed or Verified By Date Knina dl soo so op po po aa a a aaa maa Po Fowkateat oo oo ol Pow Rateat 0250 200 ol cl Iowa oso soo ol cl Pp FowRateat 0750 ao ol ll Irae row soo cl lo Ios 15 coo ol ol 0o sm po cl Lo 50 20m po po cl Lo sow 25m pop lo Lo po po FowRateat ao ao Inspect for Cold or Sweaty condition Excessive Venting Performed or Verified By Date eee from RV a remarca remera Oi a PE Han AAA ARA GAT PO remeros YO Os amante oasen Pome YO HELIOS Portables Technical Service Manual PN 20562190 Rev C X Maintenance Schedule B Continuous As Needed Schedule A Introduction Continuous maintenance is a set of tests and inspections to be done periodically to ensure that the equipment is functioning properly It can be done while the equipment is in service by drivers or other personnel 1 Ifa unit fails a given test it should be taken out of service and sent to the repair center department for further inspec tion 2 Schedule The continuous schedule should be performed every time the driver visits a patient or when their reser voir is filled or replaced It should also be performed when equipment is transferred between patients B Procedure Ensure the unit is empty of liquid oxygen contents 2 Visual Inspection a Inspect the case flow knob and v
13. amp Repair Procedures Table 6 cont Probable Cause Corrective Action 14 Unit will not main oe EEE Inspect the saturation pressure of the reservoir used for filling tain acceptable pres ag Allow at least 30 minutes at no flow for the portable to saturate sure When in use specification properly Preform a leak check on the plumbing RP2 Repair leaks as nec essary Economizer valve faulty Test the economizer RP9 and replace RP10 if necessary s jqe Od SO NMSAH b Leak in the system Unit will not main Inspect the saturation pressure of the reservoir used for filling tain acceptable Saturation pressure is out of pressure in standby specification mode Allow at least 30 minutes at no flow for the portable to saturate properly Preform a leak check on the plumbing RP2 Repair leaks as nec essary PRV faulty Test the PRV RP7 and replace RP10 if necessary b Leak in the system HELIOS Portables Technical Service Manual PN 20562190 Rev C aa i Troubleshooting amp Repair Procedures m O Mm Test pa Gace QDV Pin Scale Relief QDV QDV Vent pad Visual t Good gt ins
14. inner vessel is designed to safely hold liquid oxygen and is protected from over pres surization by the primary relief valve Vacuum insulation between the inner and outer vessel keeps outside heat from causing the cold liquid inside to evaporate 2 Plumbing System The plumbing system consists of the breathing warming and vaporizing coils vent valve R E valve SRV and QDV The plumbing is responsible for both filling the portable and drawing the liquid oxygen out of the cryogenic container so that it can be delivered to the patient 3 Case The durable plastic case protects and encloses the cryo genic container plumbing system and flow control valve The plastic case also contains vents to improve circulation of air and minimize icing 4 Liquid Content Level Indicator A mechanical spring bal anced indicator used to display the liquid oxygen contents of the HELiOS portable It is built into the rear cover of the unit and contains a viewing window When the patient lifts the unit by its strap the window displays a green bar whose height is proportional to the amount of liquid in the unit 5 Demand Flow Control Valve FCV The flow control valve allows the patient to select either demand or continuous oxy gen flow It is a pneumatic demand valve that utilizes a dual lumen cannula to detect the negative pressure produced by a patient s inhalation and initiate flow s jqe Od OE HELIOS Portables Technical Service Manual
15. invoice with pay ment date indicated All shipments will originate from the factory If a particular carrier or method of shipment is desired specify when placing order For additional ordering and contact information visit www cairemedical com HELIOS Portables Technical Service Manual PN 20562190 Rev C Ci oi BISE OE Return amp Restockinc When a CAIRE unit is received it should be inspected im mediately as outlined in Section VIII Unpacking and Setup Instructions If a problem with the unit should be encountered reference should be made to the Troubleshooting Chart in Section XI If these procedures do not provide a solution for the problem the following steps should be taken 1 Call CAIRE Inc Customer Service North and South America Asia Pac Rim Phone US Only 800 482 2473 Phone 770 721 7759 Africa Europe Middle East Phone 44 0 1344 403100 2 State the problem with the unit 3 If it is determined that the problem cannot be solved by the distributor a Return Material Authorization RMA number will be assigned to the unit or part s 4 T a Purchase Order Number is to be referenced please give this number to the Customer Service Representative at that time 5 Carefully package the parts or repack the unit in its original shipping container precisely as shipped 6 Write the Return Authorization Number on the top of the shipping container 7 Customer Service will provide the
16. liquid water to turn to water vapor Figure 14 With atmospheric pressure at pa sea level being 14 7 PSIA 3 all Sie all eal MEE WARE Figure 14 Saturated Boiling Water at Sea Level The saturation boiling point of a liquid depends not only on temperature but also on pressure If the pressure in a container of satu rated liquid increases the temperature required for saturation to occur will also increase This leaves the liquid unsaturated that is capable of accepting more heat before it will boil Figure 15 With atmospheric pressure at 14 7 PSIA and the pressure cooker at 15 PSIG 29 7 PSIA Figure 15 Saturated Boiling Water at Higher Pressure HELIOS Portables Technical Service Manual PN 20562190 Rev C L rr Imo Y mv e mng eb o 2 D N VII Saturation Principles If the pressure in a container of saturated liquid decreases the temperature required for saturation to occur will decrease This leaves m the liquid super saturated or too warm When this occurs rapid boiling and vaporizing of some of the liquid occurs The rapid boil rc ing and evaporation of the liquid dissipates the excessive heat until the remaining liquid cools down to the new saturation temperature Me associated with the decreased pressure Figure 16 al o mng eh th haii Q Wit a dina BEH e pressure a P ee D Sa on ae TA 2 ee Bee moa gt gt Figure 16 S
17. of the two schedules Maintenance checklists are provided for each schedule See Below NOTE All test procedures are numerically designated RP and can be found in the Troubleshooting section of this manual Schedule A Biennial 24 Month Schedule A Introduction The Biennial schedule is a series of tests that should be per formed at a minimum of once every 2 years to ensure that the equipment is functioning properly 1 If the unit fails a given test one of two things may be done Refer to the Troubleshooting section of this manual or Return the unit to CAIRE Inc for repair 2 Schedule Maximum of two years between routine main tenance testing The unit should be tested whenever a problem is suspected A Procedure Follow the steps in order listed If the unit fails any step refer to Troubleshooting section of this manual 1 Visual Inspection a Remove any LOX prior to maintenance RP3 b Inspect the case flow knob and vent lever for cracks warping or discoloration c Verify that the label on the rear cover is present and legible d Verify that the fill connector poppet is not worn or bro ken e Verify that the lip seal in the fill connector is not cracked f Move the vent lever down to the open position Verify that it moves smoothly when opening and closing the vent valve 3 Clean and Disinfect the Exterior Case Gaseous Oxygen Functional Tests a Primary Relief Valve Test RP7
18. outlet arm 3 Cut and remove the two zip ties that secure the liquid with drawal coil to the gas withdrawal coil at the top of the cryo genic container 4 Use an adjustable wrench to hold the R E valve inlet arm with the SRV stationary Use a 7 16 inch open end wrench to remove the gas withdrawal warming coil compression nut from the R E valve fitting hd AI 3 g 3 j i a k y Sa i z A Figure 35 Removing the Compression Nut 5 Usea 7 16 inch open end wrench to hold the manifold block on the top of the container stationary Use a 7 16 inch open end wrench to remove the remaining gas withdrawal coil compression nut from the manifold block 6 Remove the ends of the warming coil from their fittings 7 Remove the gas withdrawal coil by pulling it up and out of the liquid withdrawal warming coll oi BISE OE 8 Replace the gas withdrawal coil by reversing steps 1 7 RP15A Vent Valve Assembly R R H300 1 Remove the covers RP4 2 Disconnect the flexible vent tube from the barbed fitting at the vent valve outlet 3 Hold the vent valve large hex nut stationary using a 5 8 inch open end wrench and loosen the jam nut that holds the vent valve to the mounting bracket using a 11 16 inch open end wrench Figure 36 H300 Vent Valve Removal 4 Remove the two vent valve screws and lock washers using a 7 64 in hex wrench 5 Slide the vent valve out of its mounting bracket 6 Replace th
19. properly dl A OE Return the portable to an upright or acceptable operating posi tion and allow several minutes for stabilization Allow the portable to warm until the vent valve can close c Vent valve is frozen open After the warm up allow up to 60 minutes for the portable to stabilize and build pressure before operating Faulty vent valve Replace the vent valve RP15 6 Excessive venting from The portable has been trans relief valves hissing a ported or laid in an improper sound operating position Return the portable to an upright or acceptable operating posi tion and allow several minutes for stabilization Inspect the saturation pressure of the reservoir used for filling b Saturation pressure too high Allow at least 30 minutes at no flow for the portable to satu rate properly l Allow the portable to warm and thaw Attempt to re fill the c Relief valve frozen open portable Test the relief valve RP7 amp RP8 and replace if necessary Faulty relief valve RP10 amp RP11 e Partial or complete loss of Conduct the NER test RP22 and return the unit to CAIRE vacuum inc 1f necessary 7 No Flow Check the contents indicator level gauge and fill the portable a Portable is empty l if needed Flow control valve turned off Ensure the flow control knob is not in the off O position Nasal cannula kinked or discon l ee c ecd Ensure proper nasal cannula functionality and posit
20. 30 psi Primary Relief Valve Reseat Pressure gt 1 59 bar gt 23 psi gt 1 72 bar gt 25psi Secondary Relief Valve Opening 5 24 5 79 bar 76 84 psi 5 24 5 79 bar 76 84 psi Pressure Secondary B SESCAT EEEN gt 4 41 bar gt 64 psi gt 4 41 bar gt 64 psi Normal ae KAG NEN 0 85 Ib day 0 39 kg day 1 0 Ib day 0 45 kg day Continuous LPM 12 25 5 75 Continuous LPM 1 2 3 4 5 6 Selectable Flow Rates Demand 1 1 5 2 0 2 5 3 3 5 4 Demand 1 5 2 2 5 3 4 Spring Scale Spring Scale Oberatino Temperature 10 C to 40 C 14 F to 104 F 10 C to 40 C 14 F to 104 F P 5 P 95 max relative humidity 95 max relative humidity Mabasa Iemperatice 40 C to 70 C 40 F to 158 F 40 C to 70 C 40 F to 158 F 5 P 95 max relative humidity 95 max relative humidity dl o SO NMAH HELIOS Portables Technical Service Manual PN 20562190 Rev C KU VII Saturation Principles Oxygen in its normal state is a colorless tasteless and odorless gas that is non flammable although it greatly accelerates combustion in high concentrations It constitutes about 21 of the Earth s atmosphere by volume Oxygen in higher concentrations is medically beneficial to patients suffering from certain respiratory diseases Oxygen like most gases will condense into a liquid with an increase in pressure or decrease in temperature As a liquid oxygen is pale blue in color and is about 860 times as dense as its gaseous
21. 5 Lip Seal Replacement 5 Thread the lip seal retainer onto the large end of the fill con nector body and tighten to a torque of 35 lb ft 511 n m 6 Replace the QDV assembly RP17 HELIOS Portables Technical Service Manual PN 20562190 Rev C i Troubleshooting amp Repair Procedures RP19 Demand Flow Control Valve Test 14 Set the flow control knob to the lowest continuous flow set ting 0 12 for the H300 C1 for the H850 r 1 Make sure the unit has been leak tested RP2 O 15 Check the continuous flow at each flow setting Verify that N 2 Fill the H300 or H850 from a properly saturated source of they are within the ranges listed in Table 6 H300 or Table Ay liquid oxygen 7 H850 a Q 3 Allow the unit to sit undisturbed for approximately 30 min 16 Disconnect the test flow meter eg utes to allow it to stabilize at its primary relief valve pres sure 17 Attached a dual lumen cannula to the H300 or H850 4 Attach a calibrated flow meter to the top cannula barb on the 18 Adjust the cannula to your face and breathe normally H300 or H850 using a length of 3 16 in 0 48 cm diameter tubing B 778214 00 if necessary 19 At all demand flow settings verify that oxygen flow cycles on and off in response to your inhalation and exhalation 5 Set the flow control valve to its lowest demand setting 1 on Verify that you sense a brief puff of oxygen at the begin the H300 D1 5 on the H850 ning of each inhalation
22. DT CAIRE A Chart Industries Company ELIOS Portables LE NON OCCT SY YY YAYA lt jenueW d21A4 5 0 PET L a V DN _ Wa Preface I SERVICE MANUAL m HELIOS Portables 2 ad O CAIRE Inc pa 2200 Airport Industrial Dr Ste 500 gt Ball Ground GA 30107 M www cairemedical com Customer Technical Service North and South America Phone US Only 800 482 2473 Fax 888 932 2473 US 770 721 7759 Fax 770 721 7758 Asia Australia Pacific Rim Phone 770 721 7759 Fax 770 721 7758 Europe Phone 44 0 1189 367080 Fax 44 118 9799245 For Customer or Technical Service needs product assistance ordering part numbers specifications unexpected events etc contact CAIRE Inc 2200 Airport Industrial Dr Ste 500 1 800 482 2473 www cairemedical com NOTE SI pressure values expressed in manual are referenced to atmosphere HELiOS and Companion are trademarks of CAIRE INC SNOOP is a trademark of the SWAGELOK Co Teflon and Krytox are trademarks of E I DUPONT DE NEMOURS amp Co Kel F and Scotch Brite are trademarks of the 3M Co Magnehelic is a trademark of the DWYER INSTRUMENT Co QUICK GRIP is a trademark of the AMERICAN TOOL Co Sporicidin is a trademark of SPORICIDIN INTERNATIONAL Disclaimer This manual is intended for use by experienced personnel only No attempt should be made to fill or maintain this equip
23. G Keep oxygen equipment away from open flames or electrical appliances such as heaters stoves toasters and other devices with heating elements WARNING Never permit smoking in an area where oxygen equipment is repaired filled or used WARNING Always wear goggles a face shield and insulated gloves when working with or around liquid oxygen WARNING These devices are not intended for life supporting applications nor do they provide patient monitoring capabili ties WARNING In certain circumstances the use of non pre scribed oxygen can be hazardous These devices should only be used when prescribed by a physician WARNING Excess accumulation of oxygen creates an oxygen enriched atmosphere defined by the Compressed Gas Association as an oxygen concentration above 23 In an oxygen enriched atmosphere flammable items may burn vigor ously and may explode Certain items considered noncombus tible in air may burn rapidly in such an environment Keep all organic materials and other flammable substances away from possible contact with oxygen particularly oil grease kerosene cloth wood paint tar coal dust and dirt which may contain oil or grease DO NOT permit smoking or open flame in any area where oxygen is stored handled or used Failure to comply with this warning may result in serious personal injury dl o SO NMSAH WARNING In the event a unit is dropped tipped over or unreasonably abused immediatel
24. Household Glass Cleaner Solution Mild Solution of Dish Washing Detergent amp Warm Water Household Bleach 1 10 Dilution With Water 3 Buff out any scuff marks using a Scotch Brite adhesive pad with detergent 4 Wipe the case completely dry with a towel Interior Cleaning The H300 and H850 plumbing can be cleaned lightly if necessary Follow the below procedure for cleaning the internal components of the unit 1 Remove the cover RP4 2 Apply a mild solution of detergent and water to a clean cloth Wipe the interior case and plumbing with this cloth 3 Use a cotton swab to dust and clean in tight places 4 Dry all components thoroughly with a dry towel and oil free compressed gas End of Life At the end of the unit s service life all reservoir units must be re turned to a recycling facility in compliance with applicable codes and regulations Alternatively CAIRE may be contacted for dis posal information HELIOS Portables Technical Service Manual PN 20562190 Rev C Di el BISE SO NMSAH X Maintenance There are two schedules for routine maintenance which the home health care distributor may follow These schedules allow the distributor maximum flexibility while assuring that the equip ment is operating properly CAIRE suggests a continuous as needed and biennial 24 month schedule for routine mainte nance of the H300 and H850 The distributor may follow either schedule or a combination
25. Manual PN 20562190 Rev C EN WN Service Tools Equir Tools and Accessories available from CAIRE Description Item Number ol SEP EE SO AH HELIOS Portables Technical Service Manual PN 20562190 Rev C an Lf CAIRE A Chart Industries Company Chart Industries Inc CAIRE Inc BioMedical Group Chart Biomedical Ltd 2200 Airport Industrial Dr Ste 500 Unit 6 Ashville Way Ball Ground GA 30107 Wokingham Ph 770 721 7700 Toll Free 1 800 482 2473 CD Berks RG41 2PL United Kingdom Fax 770 721 7701 Ph 44 0 1189 367080 e Fax 44 0 1189 799245 www cairemedical com CAIRE Inc reserves the right to discontinue its products or change the prices materials equipment quality descriptions Paas a KAKA Copyright 2014 Ref 20562190 Rev C specifications and or processes to its products at any time without prior notice and with no further obligation or consequence All rights not expressly stated herein are reserved by us as applicable
26. N 20562190 Rev C s i Troubleshooting amp Repair Procedures Table 8 H850 Flow Tolerance Flow Specification Acceptable ee oe HON LPM Range LPM Co None 00 om NOTE The values in Tables 7 amp 8 are based on ambient condi tions of 700F 210C and 29 4 in Hg 74 mm Hg and an operat ing pressure range of 1 54 to 1 71 bar 22 3 psi to 24 8 psi Any deviations from these conditions can affect flow results NOTE If the flow measurements are out of specification check the pressure in the unit A combination of high or low pressure and the tolerance of the particular flow meter can result in inac curate readings oi BISE OE HELIOS Portables Technical Service Manual PN 20562190 Rev C i Troubleshooting amp Repair Procedures RP20 Demand FCV R R 1 Remove the covers RP4 2 Remove the flow control knob by pulling it straight back from the front cover 3 Pull the demand flow control valve backwards out of its seat inside the front cover 4 Use a small flat head screwdriver to carefully pry the polyu rethane tube off of the demand flow control valve inlet barbed fitting 5 Use a small flat head screwdriver to carefully pry the sili cone tubes off of the cannula barb fittings 6 Install the new flow control valve by reversing steps 1 5 NOTE The demand flow control valve is not field serviceable Only the barbs and inlet filter screen may be replaces as needed CAUTION The demand f
27. Set Up 9 Use a 3 16 inch tubing nut B 775067 00 or 2 inch 5 08 cm spacer to prop the vent valve lever in the open position 10 Place one drop of leak detector on the R E valve bronze vent port silencer disk shown in Figure 29 HELIOS Portables Technical Service Manual PN 20562190 Rev C ll Ai Troubleshootinc RP8 Secondary Relief Valve Test 1 Remove the covers RP4 2 Set the container assembly on the portable test fixture 3 Place the front cover with tubing still connected next to the container assembly as shown in Figure 19 NOTE Note For newer units manufactured without the CPC Connector the CPC Connector Kit will need to be installed please refer to RP27 CAUTION Disconnect and clamp off the demand flow control valve oxygen inlet tube before performing the secondary relief valve test High test pressure can damage the FCV 4 Disconnect the 1 16 in 0 15 cm diameter urethane tube from the demand flow control valve inlet barbed fitting toward the front of the valve Clamp the inlet tube with a km Ma PDS sad CINE FARO Nee Lt ae 8 i AS iy 4 a ng al Tr 39 erin LA BEA pA PT PAY AD LAP A UGOY MA MG o METER ue na o 1 isi Li ba 4 PEL ANS hemostat clamp 5 Set the flow control knob in the off position 0 6 Attach the DISS end of a HELIOS oxygen supply line B 701656 SV to a 0 6 90 bar 0 100 psi source of gaseous oxygen 7 Insert the
28. ables This guide is not all inclusive but is intended to serve as a general outline for solving operational problems The table describes symptoms identifies probable causes and suggests correc tive actions When more than one probable cause is identified the causes are listed in order of most likely to least likely reasons for the problem Table 6 Troubleshooting 9 qe 410d SO 14H Symptom Probable Cause Corrective Action 1 Unable to start fill or excessively long fill times Make sure the QDV on the portable and reservoir are properly aligned and ensure that a downward force 1s being applied to the portable Reservoir is empty Swap or re fill the reservoir Ensure that the vent valve lever is fully in the open position The lever must be open to begin a fill QDV not properly engaged on the reser voir jab b Vent valve not open Be sure that the FCV knob is in the off 0 posi tion If the valve is open fill times can increase Cu S7 FCV is open Swap reservoirs or allow the reservoir time to stabi lize and build pressure A Reservoir saturation pressure 1s too low Inspect the vent tubes for blockages Clean by blow Vent valve is obstructed ing out with compressed gas or replace parts if nec essary Check the portable for leaks RP2 and repair if Leak in the system needed Inspect the QDV and be sure the poppet opens prop QDV damaged or faulty erl
29. ace RP10 if necessary RP10 if necessary Blockage in the liquid withdrawal Check the warming coils and withdrawal tubes for blockages circuit Replace if necessary FCV faulty Replace the FCV RP20 9 Unit stops pulsing in o Te emdim a Cannula is disconnected Ensure the nasal cannula is firmly attached to the barb s bi Cama oeod Inspect the cannula for kinks bends or water droplets Replace the cannula if necessary o Cannula tips not positioned prop Ensure the cannula remains in the nostrils and do not slide to one erly in the nose side d Patient is breathing with their Patient must inhale through their nose to initiate pulse demand mouth open flow Reference symptom 14 Inspect the saturation pressure of the res ervoir used for filling Allow at least 30 minutes at no flow for the portable to saturate properly Saturation pressure is out of specification Perform a leak check on the plumbing RP2 Repair leaks as necessary Faulty FCV Test the FCV RP19 and replace if necessary Leak in the system HELIOS Portables Technical Service Manual PN 20562190 Rev C ES i Troubleshooting amp Repair Procedures Table 6 cont Symptom Probable Cause Corrective Action bng Ensure the nasal cannula is firmly attached to the barb s Must be a Cannula is disconnected using a dual lumen cannula connected to both ports E Inspect the cannula for kinks bends or water droplets Replace
30. air 1 Remove the vent valve assembly RP15 Za Pry the short straight end of the torsion spring off of its anchor point on the vent valve lever using a small flat blade screwdriver Push the long hooked end of the torsion spring off of the valve body using a small flat blade screwdriver HELIOS Portables Technical Service Manual PN 20562190 Rev C WS Troubleshooting amp Repair Procedures RP17A QDV Assembly R R H300 1 Remove the case RP4 2 Use an adjustable wrench to hold the fill connector mount ing bracket stationary Use a second 9 16 inch open end wrench to remove the fill on the machined flats of the fill connector body to loosen and remove the compression nut of the fill tube from the top of the fill connector S9 8110d SO 13H Whig 114 Figure 42 H300 QDV Assembly Removal 7 To replace reverse steps 1 6 NOTE Use a torque wrench to tighten the fill connector to a torque of 35 lb ft 511 n m and the jam nut to a torque of 20 lb ft 292N m Figure 40 H300 QDV Removal 3 Use a 7 16 inch open end wrench to hold the fill tube con tainer fitting stationary Use a 9 16 inch open end wrench to remove the fill tube lower compression nut from the cryo genic container NOTE The internal threads in the fill connector jam nut do not run completely through the nut Install the fill connector jam nut with the unthreaded end toward the mounting bracket NOTE Position the fill t
31. at the unit is empty and nothing is attached to it 2 Place the H300 or H850 on a table and hold it down while gently pulling up on the contents indicator strap Verify that the indicator operates smoothly and without binding 3 Suspend the unit in the air by its contents indicator strap only Verify that the green bar does not appear in the win dow on the rear case 4 Completely fill the unit with liquid oxygen 5 Lift the unit in the air by its contents indicator strap 6 Push the bottom backside of the unit gently forward so that it stands straight vertically Verify that the green bar fills the window on the rear case 7 If the contents indicator reads inaccurately replace the con tents indicator RP5B sa qe3J0d SO 13H HELIOS Portables Technical Service Manual PN 20562190 Rev C 35 i Troubleshooting amp Repair Procedures RP7 Primary Relief Valve Test 1 Remove the covers RP4 2 Set the container assembly on the portable test fixture B 778202 00 NOTE For newer units manufactured without the CPC Connector the CPC Connector Kit will need to be installed please refer to RP27 dd o OE 3 Stand the front cover with tubing still connected next to the container assembly as shown in Figure 19 11 Slowly increase the gaseous oxygen source pressure until 4 Set the flow control knob in the off position 0 tiny foam like bubbles just begin to form on the surface of the silencer d
32. aturated Boiling Water at Lower Pressure Water boils at 201 F Oxygen which is normally a gas at atmospheric pressure changes into liquid form when it is cooled to about 297 F 183 C at atmospheric pressure It is saturated at this temperature and pressure which means it will remain a liquid as long as no additional heat 1s added However the large quantity of heat present in the atmosphere constantly enters the liquid oxygen and causes it to boil and vaporize back into a gas Since it is virtually impossible to keep all of the heat in the atmosphere from entering the liquid oxygen constant boiling and vaporization occurs Now when liquid oxygen is placed in a closed container the vaporizing gas is trapped nd begins to build pressure As pressure in creases above atmospheric pressure more heat is needed for boiling to occur at the higher pressure The heat that is constantly avail able from the atmosphere warms the liquid to a higher temperature where boiling again occurs The vaporizing gas builds pressure and the process continues As the pressure on liquid oxygen builds the related saturation temperature of the liquid increases propor tionally Figure 17 100 690 75 518 LIQUID 50 345 25 173 SATURATION PRESSURE PSIG kPa 300 290 280 270 260 250 184 179 173 168 162 157 SATURATION TEMPERATURE F C Figure 17 Liquid Oxygen Sat
33. bly R R H300 44 RP17B QDV Assembly R R H850 45 RP18 QDV Lip Seal R R 45 RP19 Demand Flow Control Valve Test 46 RP20 Demand FCV R R 00 48 RP21 Demand FCV Filter Screen Replacement 48 RP22 Normal Evaporation Rate NER Test 49 RP23 Oxygen Supply Line Quick Connect R R 49 RP24 Inline Check Valve R R 49 RP25 Compression Fitting Nut amp Ferrule Replacement 50 RP26 Flexible Tubing Replacement 50 RP27 CPC Connector Kit Installation 50 Introduction 1 These procedures are designed to be performed only by qualified personnel with proper equipment 2 Any failure during routine maintenance checks will refer you to this section See troubleshooting chart for appropriate HELIOS Portables Technical Service Manual PN 20562190 Rev C 3 procedure dl li OE i Troubleshooting amp Repair Procedures Table 6 below provides troubleshooting procedures for the HELiOS port
34. ce Manual PN 20562190 Rev C 9acking and Setup Unpacking 1 Inspect carton for shipping damage Report any damage to freight company before signing bill of lading 2 Check description on carton against your order 3 Unpack unit including all accessories and documenta tion ol BISE OE 4 Set aside packing materials in case unit must be returned to the factory Setup 1 Record the serial number of the unit 2 Visually inspect the unit for damage from improper han dling Note any dents cracks or missing parts 3 Ensure the vent valve is in the closed position Be sure its lever opens and closes smoothly 4 If possible connect the H300 or H850 to a reservoir to check for smooth coupling 5 Hold the unit on a table and carefully pull up on the con tents indicator strap Verify that the mechanism moves smoothly 6 Verify that the unit has all its warning caution labels Check labels for damage 7 Wipe away any dust on the unit with a clean dry lint free cloth 8 Verify that a standard dual lumen cannula will attach to the unit It should be rated at least 6 LPM in flow and should be a maximum of 7 ft 213 4 mm in length HELIOS Portables Technical Service Manual PN 20562190 Rev C Cg Operation Filling 1 Dry the male QDV on the reservoir using a clean dry lint free cloth 2 Dry the female QDV on the H300 or H850 using a clean dry lint free cloth WARNING The fill connectors mu
35. ce the pressure of the gaseous oxygen source until the audible hissing noise is no longer heard 15 Verify that the SRV closes audible hiss no longer heard at a pressure greater than 4 41 bar 64 psi NOTE If the SRV does not close within this range the first time repeat the SRV test If it fails to close within an acceptable range the second time replace the SRV RP11 16 Reduce the oxygen source pressure to 0 bar psi and discon nect the HELIOS oxygen supply line from the quick connect on the front cover 17 Disconnect the test pressure gauge from the vent valve and vent the pressure in the unit through the open vent valve 18 Connect the flexible vent tube to the vent valve barbed fit ting and remove the nut or spacer propping the vent lever open 19 Remove the bar clamp and the tubing clamp hemostat 20 Connect the urethane tube to the FCV 21 Re Install the covers RP4 HELIOS Portables Technical Service Manual PN 20562190 Rev C NA Troubleshootinc RP9A Economizer Test H300 1 Make sure the unit has been leak tested RP2 2 Fill the H300 from a properly saturated source of liquid oxy gen 3 Remove the case RP4 4 Set the unit on the portable test fixture 5 Stand the front cover with tubing connected next to the bot tle assembly as shown in Figure 19 6 Allow the unit to sit undisturbed for 30 minutes to stabilize at its primary relief valve setting 7 Disconnect t
36. correct shipping location once the RMA is provided Restocking Policy If it becomes necessary to cancel an order with CAIRE Inc af ter the shipment has been received use the following Restock Policy procedure 1 Call CAIRE Inc Customer Service 2 When contacting Customer Service personnel it will be nec essary to relay the following information dd o SO NMSAH a State the quantity and description of equipment to be re turned b Give the Serial Number of each unit to be returned c State the equipment purchase date 3 An RMA number will be issued in the name of the distribu tor by CAIRE Inc for the equipment to be returned 4 When the equipment is shipped to the factory the RMA number must appear on the packing slip and shipping boxes 5 Customer Service will provide the correct shipping location once the RMA is provided 6 Finally a Credit Memo minus a 15 restocking fee will be issued to the distributor when all equipment has been re ceived inspected and restocked by CAIRE Inc Return of Unused Non Defective Merchandise CAIRE Inc at its discretion charges a 15 restocking fee for unused non defective merchandise that is returned An RMA number must be obtained from CAIRE Inc Customer Service prior to return of any goods Merchandise cannot be returned for credit after sixty 60 days Customer to pay all freight charges Tracking capability and insurance on all returned goods is a
37. d vised CAIRE Inc will not be responsible for misdirected ship ments HELIOS Portables Technical Service Manual PN 20562190 Rev C ES 8 Service Tools Equit Table 9 Table 11 Required Tools 10 inch Required Supplies Household Glass Cleaner Krytox Lubricant Lint Free Cloth Clamp or Hemostat eigo gt gt ase S alo v 5 e 7 o Ss O pad pd m pr OJO e O pii Ba Ss OJO a p GIO gt gt lt O ra QO pamo 5 O J s jqe 0d SO IJH Snoop Liquid Leak Detector TEFLON Tape Scotch Brite Adhesive Pad as O gt Allen Wrenches Various Sizes ewler s Screwdriver Open Ended Wrench 1 2 inch Open Ended Wrench 1 4 inch Open Ended Wrench 5 8 inch Open Ended Wrench 7 16 inch Open Ended Wrench 9 16 inch ide Cutters sini ay Z S O olo 4 5 he O UN Old gt lt T Z y o al FJ J alo lt A Tu gt O i 5 O O 5 Q A Q pag O pr Tie Wraps Table 10 Required Fixtures Equipment Calibrated Flow Meter Calibrated Weight Scale Jet Venturi Assembly Portable Test Fixture Test Pressure Gauge w Tubing Gaseous Oxygen Source 0 6 89 bar 0 100 psi Oxygen Compatible Tubing 3 16 inch 0 48 cm diameter Tee Connector 3 16 inch 0 48 cm Liquid Oxygen Source For a complete list of accessories see the accessories catalog on www cairemedical com HELIOS Portables Technical Service
38. dditionally many greases and liquid solvents become extremely hazardous materials when placed in an oxygen enriched environment In its liquid form oxygen is still odorless and tasteless but is pale blue in color At an operating pressure of 1 4 bar 20 psig the tem perature of liquid oxygen is about 173 C 280 F Skin exposed to such a low temperature can become severely frostbitten Contraindications While CAIRE Inc equipment is designed and built to the most rigid standards no piece of mechanical equipment can ever be made 100 foolproof Strict compliance with proper safety prac tices is necessary when using any CAIRE unit We recommend that our distributors emphasize safety and safe handling practices to their employees and customers While safety features have been designed into the unit and safe operations are anticipated it is necessary that all distributor personnel carefully read and fully understand WARNINGS CAUTIONS and NOTES throughout the manual Periodic review of this information is recommended These hazards require certain safety precautions to be taken when working with or around gaseous and or liquid oxygen WARNING Never permit combustible substances such as greases oils solvents or other compounds not oxygen compat ible to contact any component of the unit exposed to higher than atmospheric concentrations of gaseous or liquid oxygen This especially applies to tubing fittings and valves WARNIN
39. dnesation on the Exterior of the Unit Vent Valve Functionality Ensuring that All Parts are Present and the Verified By Date Valve Functions as it Should FCV knob moves smoothly and encounters a detent at each setting Verified By Date Post Fill Visual Inspection QDV Poppet is Closed and Not Leaking Verified By Date Vent Valve is Not Leaking Verified By Date SS No Heavy Frost or Condensation is Present on the Exterior of the Unit Verified By Date N Liquid Level Contents Indicator Reads the Accurate Amount Verified By Date Ba IS 5 Verified By Date HELIOS Portables Technical Service Manual PN 20562190 Rev C Ei i Troubleshooting amp Repair Procedures Table of Contents A Introduction 20 B Troubleshooting Charts 21 27 C Repair Procedures RPI General 31 RP2 Liquid Leak Detector Test 31 RP3A Emptying the Unit H300 33 RP3B Emptying the Unit H850 33 RP4 Cover Remova 34 RPSA Front Cover R R 34 RP3B R
40. e Manual PN 20562190 Rev C Di oi BISE SONIH i Troubleshooting amp Repair Procedures RP10 R E Valve R R 13 Install the barbed fitting in the R E valve outlet arm 1 Remove the covers RP4 14 Install the flexible urethane tube on the barbed fitting 2 Remove the flexible urethane tube from the barbed fitting on NOTE The R E valve arms should face the container the R E valve outlet arm Use a 1 4 inch open end wrench to remove the barbed fitting 15 Replace the case RP4 3 Use an adjustable wrench to hold the R E valve inlet arm stationary Use a 7 16 inch open end wrench to remove the gas withdrawal warming coil compression nut from the inlet RP11 SRV R R arm fitting dl o SO NMSAH 1 Remove the covers RP4 4 Pull the gas withdrawal warming coil tube out of the fitting 2 Use an adjustable wrench to hold the R E valve inlet arm RE Valve stationary 3 Use a 1 2 inch open end wrench to remove the SRV 4 Apply Teflon tape to the threads of the new SRV Secondary Relief 5 Install the new SRV in the R E valve inlet arm port Valve 6 Use an adjustable wrench to hold the R E valve stationary Figure 32 Gas Withdrawal Coil Removal 7 Use a 1 2 inch open end wrench to tighten the SRV until snug 5 Use an adjustable wrench to hold the R E valve outlet arm stationary Use a 1 2 inch open end wrench to remove the liquid withdrawal warming coil compression nut from the outlet arm fi
41. e chambers and delivers it to the patient through the upper cannula barb An initial volume of oxygen called a bolus is delivered imme diately when a patient breathes in The amount of oxygen that is delivered in this bolus is determined by the setting selected on the FCV After the initial bolus a smaller volume of oxygen called a tail flow is delivered continuously until the patient s inhalation stops Figure 10 below is a graph showing the bolus delivery of oxygen when the H300 or H850 is in demand D mode When a patient stops inhaling the sensor diaphragm raises up ward and blocks the bleed flow from under the slave diaphragm In turn the slave diaphragm pushes upward and stops the tail flow to the patient Table 2 H300 Demand Flow Delivery Demand Setting Bolus Size mL Tail Flow LPM o o l oe Table 3 H850 Demand Flow Delivery Demand Setting Bolus Size mL Tail Flow LPM ws oo fl os Flow Setting 1 2 Variable 15 3 Bolus ml ES 4 Variable Tail Flow Patient Inhalation Flow Patient Pressure Figure 10 H300 H850 Demand Delivery Curve HELIOS Portables Technical Service Manual PN 20562190 Rev C D8 dd BISE SO NMSAH neration Continuous Flow Serial Number Identification When the FCV is on continuous C mode the oxygen flow 1 Units manufactured prior to October 2010 are identified by 1s delivered in a continuous stream rather than a bolus and tail flow deiver
42. e vent valve assembly by reversing steps 1 5 HELIOS Portables Technical Service Manual PN 20562190 Rev C a i Troubleshooting amp Repair Procedures RP15B Vent Valve Assembly R R H850 4 Remove the torsion spring 1 Remove the covers RP4 5 Remove the vent tube barbed fitting using a 1 4 inch open end wrench 2 Disconnect the flexible vent tube from the barbed fitting on Pull the vent lever down and place a 1 2 inch open end the side of the vent valve 6 Push out the lever pin using a 1 16 inch hex key pin punch or ball driver wrench on the vent valve body just above the hex nut sa qe3jJ0d SO 13H Loosen the tubing compression nut at the top of the valve using a 1 2 inch open end wrench Remove the vent valve mounting screw using a T10 torx driver Lift the container assembly and the vent valve from the front cover Continue to loosen and then remove the tubing compression Figure 38 Pin Removal nut from the vent valve completely Remove the valve from the tube 7 Remove the lever and the Teflon washer Replace the vent valve assembly by reversing step 1 8 A Pin Make sure that the valve is aligned properly in the back case Torsion as shown below Spring Teflon Valve Washer Barbed Fitting Lever Figure 39 Vent Valve Disassembly 8 Replace vent valve parts and re assemble it by reversing Figure 37 H850 Vent Valve Installation BEDS ek RP16 Vent Valve Disassembly amp Rep
43. ear Cover R R 35 RP6 Contents Indicator Test 35 RP7 Primary Relief Valve Test 36 RP8 Secondary Relief Valve Test 37 RP9A Economizer Test H300 38 RP9B Economizer Test H850 38 RP10 R E Valve R R 39 RP11 SRV R R 39 RP12 Pressure Hold Test 40 RPI3A Liquid Withdrawl Warming Coil R R H300 40 RP13B Liquid Withdrawl Warming Coil R R H850 41 RP14A Gas Withdrawl Warming Coil R R H300 42 RP14B Gas Withdrawl Warming Coil R R H850 42 RPISA Vent Valve Assembly R R H300 42 RPI5B Vent Valve Assembly R R H850 43 RP16 Vent Valve Disassembly amp Repair 43 RP17A QDV Assem
44. eedle nose pliers 3 Disconnect the two springs from the contents indicator as sembly steel pull handle and indicator plate by grasping the hooked ends with needle nose pliers CAUTION Do not over stretch the contents indicator spring This can cause inaccurate readings Figure 27 Contents Indicator Spring 4 Slide the indicator plate off the end of the steel pull handle 5 Remove the hitch pin 1f present from the steel pull handle 6 Slide the steel pull handle out the top of the rear cover 7 Remove the non stick pad located above the two pull handle guides 8 Remove the carrying strap from the steel pull handle 9 To replace the rear cover reverse steps 1 8 amp Repair Procedures NOTE Install the steel pull handle so that the arm with two holes 1s the farthest from the vent lever opening Insert the straight leg of the hitch pin through the upper hole in the pull handle until the pin snaps into place The open end of the hitch pin should face the center of the rear cover NOTE When installing the contents indicator springs make sure that the open ends of the spring hooks face the center of the rear cover The top spring hooks must fit through the holes in the indicator plate arms and the steel pull handle The non stick pad must be in position behind the steel pull handle NOTE When replacing the rear cover be sure to install a new warning label RP6 Contents Indicator Test 1 Verify th
45. ent valve lever for cracks warping or discoloration b Verify that the label on the rear cover is present and leg ible c Verify that the fill connector poppet is not worn or bro ken d Verify that the lip seal in the fill connector is not cracked or showing signs of wear e Move the vent valve lever down to the open position Verify that it moves smoothly when opening and clos ing the vent valve 3 Clean and disinfect the unit if necessary using the procedures described in the Operations section of this manual 4 Fill the H300 or H850 with LOX Post Fill Inspection a Verify that the QDV poppet is closed and not leaking b Verify that the Vent Valve is closed and not leaking c Carefully pull up on the contents indicator strap Verify that it moves smoothly and reads accurately d Flow Control Valve Test RP19 dd o OE HELIOS Portables Technical Service Manual PN 20562190 Rev C a X Maintenance Schedule B Continuous Pre and Post Fill Inspection Maintenance Checklist Unit Serial Number oi BISE OE Pre Fill Visual Inspection Cracking Discoloration or Warping Verified By Date QDV Deformation Verified By Date Liquid Contents Level Indicator Functionality Verified By Date 1 2 Cryogenic Reservoir Damage Dents Dings Verified By Date Visible Dirt or Contamination Verified By Date Presence of All Required Labels Verified By Date If LOX is present in Unit Inspect for Heavy Frost or Con
46. enturi to the bottom can 9 amp Repair Procedures Squeeze the tube connected to the bottom cannula barb You should hear and or feel a continuous flow of oxygen coming from the open connection of the Jet Venturi Allow the H300 to deliver continuous flow until the unit is empty Set the flow control to 0 and disconnect the tubing and Jet Venturi s jqe od BY BEL Verify that the unit is empty using the contents indicator nula barb of the H300 scale 5 Open the Jet Venturi needle valve Ensure that the Jet 10 Open the vent valve to vent any residual pressure Venturi outlet and the bleed port remain open CAUTION Damage to the demand flow control valve is possi ble Make sure you hook up the tube exactly as shown in Figure 19 and do not block the Jet Venturi outlet or the bleed port RP3B Emptying the Unit H850 1 Set the flow control valve to a setting of 6 0 LPM Continuous C6 NOTE The procedure for the H300 can be duplicated on the H850 if continuous flow is not achieved by blowing into the can nula 2 Blow into the bottom cannula barb to initiate oxygen flow 3 Allow the H850 to deliver continuous flow until the unit is empty 4 Turn the FCV knob to O and verify that the H850 is empty by picking up the contents indicator strap Figure 23 Jet Venturi installation 5 Open the vent valve to vent any residual pressure Pressure Supply A y Jet Venturi Outlet Vacuum
47. equipment when transporting to prevent accidental tipover and spillage If a liquid oxygen spill occurs indoors open doors and windows to ventilate the area Avoid sources of ignition and do not walk on or roll equipment over the affected area Any clothing or porous material that is splashed with liq uid oxygen or otherwise absorbs high concentrations of oxygen should be removed and aired for at least one hour away from any source of ignition HELIOS Portables Technical Service Manual PN 20562190 Rev C Pneumatic Demand FCV Cryogenic Container Content Indicator 1 D E a j f 6 PUMA ra CG OL hhh MM AAA Lk ME Warming Coils The HELIOS 300 and HELiOS 850 are lightweight portable liquid oxygen units designed to deliver supplementary oxygen therapy to patients as prescribed by a physician The units are filled from a liquid reservoir for ambulatory use or used as a stationary conserving device when attached to a HELIOS reser voir using a flexible oxygen supply line Enclosed in a durable plastic case HEL1OS portable units incorporate a stainless steel cryogenic container with the valves plumbing and associated hardware necessary to convert liquid oxygen to gaseous oxygen and deliver it to the patient at or near room temperature 1 Cryogenic Container This assembly is a double walled vacuum insulated Dewar for storing liquid oxygen LOX at approximately 173 C 280 F The
48. form At atmospheric pressure 14 7 psia oxygen condenses into its liquid form at a temperature of about 297 F 184 C Liquid oxygen LOX is an efficient form of oxygen to meet a patient s port able ambulatory oxygen needs A volume of liquid oxygen when vaporized yields about 860 volumes of gaseous oxygen Figure 1 As you can see a relatively small volume of liquid oxygen provides a much larger volume of gaseous oxygen for a patient to use In medical liquid oxygen systems liquid oxygen and the gaseous oxygen resulting from its vaporization or boiling is stored under pressure The elevated pressure typically 1 52 bar 22 psig enables oxygen to flow to the patient at a selected prescribed rate To sustain this oxygen flow to the patient the liquid oxygen must be in a state that allows vaporization to readily occur In other words the liquid oxygen must be in a state of saturation Let s take a look at what liquid saturation is all about A saturated liquid is one that absorbs the maximum amount of heat possible at a given pressure without vaporizing into a gas If ad ditional heat is added the saturated liquid begins to vaporize boil while remaining at a constant temperature until all of the liquid is vaporized A common example of a saturated liquid is water at its boiling point of 212 F 100 C at sea level The constant addi tion of heat to the boiling water does not cause it to become hotter but instead causes part of the
49. g steps 1 8 NOTE Fully seat the carrying handle in the cover handle bosses The handle should angle toward the front of the unit RP5A Front Cover R R 1 Remove the cover RP4 2 Pull straight back on the flow control knob from the outside of the front cover to remove it 3 Pull the demand flow control valve back out of its seat in side the front cover 4 Disconnect the two flexible silicone tubes from the back of the cannula barbs 5 Disconnect the black urethane tube from the inlet barb of the Figure 25 H300 Container Removal inline check valve 6 Remove the C Clips that secure the cannula barbs to the front cover using a flat head screwdriver 7 Remove the cannula barbs from the outside of the front cover HELIOS Portables Technical Service Manual PN 20562190 Rev C NA Troubleshootinc 8 Remove the nut that secures the oxygen supply line quick connect to the front cover using a 5 8 inch open end wrench NOTE This is not required for units manufactured without the CPC Fitting 9 Remove the quick connect from the outside of the cover NOTE This is not required for units manufactured without the CPC Fitting 10 To replace the front cover reverse steps 1 9 RP5B Rear Cover R R 1 Remove the case RP4 2 Disconnect the two contents indicator assembly springs from the spring hooks shown in Figure 23 molded into the bottom of the rear cover by grasping the hooked ends with n
50. ges and the liquid oxygen creates a dense vapor cloud coming from under the reservoir s shroud Closing the vent valve and separating the H300 or H850 from the reservoir terminates the fill process Figure 5 is a diagram showing the filling process of a portable unit The saturation pressure explained in Section VII of this manual of the liquid oxygen can seriously affect the overall efficiency and operation of the H300 amp H850 Be A AE q Oxygen j Supply Tube wie ee Quick Connect ponanifew hb gt Control Off A aa XIE a J po i H TJ UA nt Gi N Z ZZN Nn Secondary Relief Valve 1113 Relief Economizer Valve Gas Withdrawal gt Warming Coil Fill Connector ES Gaseous O IM Liquid O Figure 5 Filling Process Please note that the section outlined in the above filling process shows a configuration of a unit equipped with an optional CPC Connector Kit HELIOS Portables Technical Service Manual PN 20562190 Rev C neration Standby When the H300 or H850 contains liquid oxygen the vent valve is closed and there is no flow demand the pressure in the system will remain at or near its primary relief valve PRV pressure As with all vacuum insulated cryogenic containers the liquid oxygen in the H300 amp H850 is always evaporating into a gas The rate of generation of this gas called head gas is called the
51. he flexible vent tube from the barbed fitting on the vent valve 8 Connect a test pressure gauge to the vent valve barbed fit ting and secure 1t with a tie wrap 9 Prop the vent valve lever in the open position using a 3 16 in 0 48 cm tubing spacer nut Verify that the test pressure gauge reads 1 65 2 07 bar 24 30 psi and that the primary relief valve is venting 10 Set the flow control knob to a setting of 2 NOTE The H300 must deliver continuous flow to perform the Economizer Test The following steps use the Jet Venturi as sembly to ensure that the H 300 provides continuous flow for the economizer test 11 Connect the jet venturi assembly to the sense cannula barb on the H300 front cover 12 Connect the DISS tubing adapter on the long tube of the jet venturi assembly to an adjustable 0 6 90 bar O 100 psi source of gaseous oxygen CAUTION Damage to the demand FCV is possible Make sure you hook up the Jet Venturi exactly as described Do not block the outlet port on the Jet Venturi assembly 13 Increase the adjustable gaseous oxygen source pressure un til you feel a continuous oxygen flow from the top cannula barb of the H300 14 Check the reading on the test pressure gauge every 5 min utes until the pressure stabilizes Stabilization occurs when 2 consecutive pressure readings are within 0 069 bar 1 psi of each other amp Repair Procedures 15 If the economizer pressure is not within 1 41
52. i Mm No Fail Fail Empty amp eds Calibrate isan Warm the PP Pass Test Pass Test Valve Tank Scale RP 12 RP 9 Fail Fail Fail Low Fail High y J y Refill amp Replace Leak Test Repeat Empty amp Empty amp Empty amp Scale Pass NER Test Pass Warm Warm Warm RP 2 Tank Tank Tank RP 8 RP 22 Fail Fail Repair Send Unit Leak Test Replace Replace Na a To CAIRE gt Pass Bi R E Valve R E Valve FCV for Repair RP 2 RP 10 RP 10 RP20 Fail Repair Leak Pressure Retention Fat Test RP 12 Pass Refill the Unit HELIOS Portables Technical Service Manual PN 20562190 Rev C i Troubleshooting amp Repair Procedures RP1 General The following procedures have been carefully prepared to allow proper removal and replacement of defective components and should be used in conjunction with the Troubleshooting Chart and the tests in this section WARNING Parts that are welded in place must not be replaced in the field Should these parts fail return complete assembly or sub assembly to factory for repair DO NOT use solder or silver solder to repair broken welds WARNING The manufacturer of Fluorolubricant warns users not to allow Fluorolubricant to contaminate tobacco products Wash Fluorolubricant from hands before smoking WARNING Do not use glue type thread locking compounds or unapproved sealants on any repairs CAUTION When replacing components make sure the new part is or
53. iented exactly the same as the original part prior to installation CAUTION Some components require a specific amount of torque when assembling Follow torque requirements where specified NOTE All replacement parts must be factory approved cleaned for oxygen service and stored in sealed plastic bags The repair area must be clean and separate from other areas Room air should be filtered and free from dust soot and other contaminants NOTE When replacing components with pipe threads use PTFE tape thread sealant Apply two rounds of PTFE tape to threads near end of component avoiding first thread NOTE When assembling new compression fittings tighten 1 8 1 4 and 1 2 nuts eight flats past finger tight and 3 16 nuts five flats past finger tight When reassembling previously used com pression fittings tighten nuts one to two flats past finger tight RP2 Liquid Leak Detector Test 1 Remove the covers RP4 2 Place the cryogenic container assembly on a portable test fixture B 778202 00 Stand the front cover with the tub ing still connected next to the bottle assembly as shown in Figure 19 S9 8110d SO 13H NOTE For newer units manufactured without the CPC Connector the CPC Connector Kit will need to be installed please refer to RP27 Figure 19 Portable Test Fixture 3 Attach a test pressure gauge B 701732 00 to the top de livery cannula barb of the unit 4 Turn the flow control k
54. ioning Inspect the saturation pressure of the reservoir used for filling d Saturation pressure is too low _ Allow at least 30 minutes at no flow for the portable to satu rate properly Perform a leak check on the plumbing RP2 Repair leaks as Leak in the system P Sa necessary HELiOS Portables Technical Service Manual PN 20562190 Rev C Ba i Troubleshooting amp Repair Procedures Table 6 cont Symptom Probable Cause Corrective Action Ensure that there is no venting from the vent valve outlet tube If Vent valve is open there is refer to the corrective actions for Liquid leaks from the vent valve tube outlet 7 FCV inlet filter is obstructed Clean or replace RP21 the filter screen s jqe 0d SO 4H Blockage in the liquid withdrawal Check the warming coils and withdrawal tubes for blockages circuit Replace if necessary FCV Faulty Replace the FCV RP20 Low flow at all LPM settings d Nasal cannula kinked or leaking Inspect the functionality of the nasal cannula Inspect the saturation pressure of the reservoir used for filling b Saturation pressure is too low Allow at least 30 minutes at no flow for the portable to saturate properly Leak in the system Perform a leak check on the plumbing RP2 Repair leaks as necessary Pa EU Clean or aaa a RP21 the filter screen qa a o Economizer valve Economizer valve faulty Test the economizer RP9 and Test the economizer RP and repl
55. isk to indicate that the PRV has opened You 5 Attach the DISS nut end of a HELIOS oxygen supply line can also listen for an audible hissing sound B 701656 SV to an 0 6 90 bar 0 100 psi source of gase ous Oxygen 12 Verify that the PRV opens at lt 1 90 bar lt 27 5 psi on the H300 or 1 79 2 07 bar 26 30 psi on the H850 6 Insert the opposite end of the HELIOS oxygen supply line into the quick connect 13 If the opening pressure is not within the acceptable range repeat the PRV test If the PRV fails to open in the accept 7 Disconnect the flexible vent tube from the barbed fitting at able range a second time replace the R E valve RP10 the vent valve outlet 14 Slowly reduce the gaseous oxygen source pressure until the 8 Connect the test pressure gauge tube to the vent valve stream of bubbles begins to diminish barbed fitting and secure 1t with a tie wrap as shown in fig ure 28 15 Verify that the PRV closes bubble begin to diminish at a pressure greater than 1 59 bar 23psi for the H300 or 1 72 bar 25 psi for the H850 16 If the closing pressure does not meet the acceptable range repeat the test If the PRV fails to re seat in the acceptable range a second time replace the R E valve RP10 17 Remove the test pressure gauge and nut spacer from the vent valve 18 Reconnect the flexible vent tube to the vent valve barbed fit ting 19 Re install the case RP4 Figure 28 Test Pressure Gauge
56. it is free of cuts and tears Install a brass collar on the tube if used so that the large end of the collar is toward the barbed fitting Push the tube squarely onto the barb as far as possible Push the brass collar 1f used onto the tube end connected to the barbed fitting RP27 CPC Connector Kit Installation For Testing units without CPC Connector Installed 1 Remove tubing from barbed fittings of Conserver and R E Valve 2 Connect CPC Connector Kit s PN 20748595 7 5 tub ing end to inlet barb of Conserver and 3 tubing end to R E Valve barbed fitting Refer to Figure 49 for unit without CPC Connector Kit converted to unit with CPC Connector Kit Figure 49 Newer Unit Manufactured without CPC Connector and Fittings Left CPC Connector Kit Installed for Testing Purposes Right HELIOS Portables Technical Service Manual PN 20562190 Rev C so XII Parts Price List Contact Customer Service or visit www cairemedical com dl o OE to obtain your parts list HELIOS Portables Technical Service Manual PN 20562190 Rev C UN LE Ordering Information Ordering Information The following steps should be used when ordering a new HLEIOS or replacement parts for an existing unit 1 Compile a list of all equipment and replacement parts to be ordered Use the following part numbers to order a complete generic English unit B 701604 00 H850 HELiOS Plus H300 HELiOS Marathon H850 For Euro
57. low control valve is manufactured to exacting tolerances and uses a number of small orifices Ensure that hands tools and work table are clean when working with the valve Do not allow liquids to enter the vent port located directly across from the vent valve inlet fitting RP21 Demand FCV Filter Screen Replacement 1 Remove the demand FCV RP20 2 Remove the inlet barbed fitting by unscrewing it from the FCV 3 Hold the valve so that the inlet port faces downward 4 Use a dental pick or other similar tool to carefully remove the inlet filter screen Wei NAAN THIS Figure 47 Inlet Filter Screen Removal 5 Push the replacement filter screen into the inlet port until it is seated on the internal support ledge NOTE Do not install two filter screens This may cause a flow restriction 6 Re install the inlet barbed fitting dd o OE NOTE When installing the brass barbed fitting verify the pres ence and condition of the seal gasket on the threaded end of the fitting 7 Replace the FCV RP20 HELIOS Portables Technical Service Manual PN 20562190 Rev C a i Troubleshooting amp Repair Procedures ls RP22 Normal Evaporation Rate NER Test RP23 Oxygen Supply Line Quick Connect R R m 1 Ensure the unit has been leak tested RP2 1 Remove the case RP4 O 2 Fill the H300 or H850 from a properly saturated source of 2 Use a small flat head screwdriver to carefully pry the ure
58. ly at high flow rates during continuous use This is due to the evaporation of LOX to gas and the temperature difference be tween the LOX and room temperature 10 Flow stops sud denly on con tinuous setting NOTE For continu ous flow to continue a inhalation must be detected periodi cally Refer to the Theory of Operation section of this manual for more in formation 9 qe 410d SO 4H Saturation pressure is out of specification Unit flows continu 12 Increased NER 13 Excessive Frost NOTE Minimal frost on the case and on the plumbing is normal This symp tom applies to frost that is much greater High humidity level High humidity levels can increase frost accumulation than what is nor a Frost 1s acceptable Inspect the saturation pressure of the reservoir used for filling c Saturation pressure is too high Allow at least 30 minutes at no flow for the portable to saturate properly Leak in the system sary a leak check on the plumbing RP2 Repair leaks as nec Ensure that there is no venting from the relief valves If there is e Relief valve open refer to the corrective actions for Excessive venting from relief valves hissing sound P Partial or complete loss of vac Conduct the NER test RP22 and return the unit to CAIRE Inc if uum necessary HELIOS Portables Technical Service Manual PN 20562190 Rev C mally observed i Troubleshooting
59. ment until both this manual and the Patient Operating Instruction booklet have been read and fully understood HELIOS Portables Technical Service Manual PN 20562190 Rev C UN J Preface L m Abbreviations E FCV Flow Control Valve PRV Primary Relief Valve O LED Light Emitting Diode QDV Quick Disconnect Valve y LOX Liquid Oxygen RMA Return Materials Authorization LPM Liters Per Minute RP Repair Procedure pa NER Normal Evaporation Rate RR Removal and Replacement gt POI Patient Operating Instructions SRV Secondary Relief Valve D N2 Nitrogen Gas O2 Oxygen Gas 1 TF Top Fill SF Side Fill DF Dual Fill PTFE Polytetrafluoroethylene Teflon DISS Diameter Index Safety System Definition of Terms WARNING Description of a condition that can result in personal injury or death CAUTION Description of a condition that can result in equipment or component damage NOTE A statement containing information important enough to emphasize or repeat ITEM Item numbers used throughout this manual are shown on the illustrations beginning in the Troubleshooting section Definition of Product Symbols Table 1 Definition of Product Symbols Definition Definition Reservoir Full Do not smoke near unit Keep unit well ventilated at all Reservoir Empty times Portable Full O Do not touch frosted parts Portable Empty Keep unit in upright position Keep unit upright flat on back Drip Proof ae or any position in between Type
60. nd through the warming coils where it expands and warms into a gas Figure 8 is a diagram of the economizer valve when it is closed and liquid withdrawal is the source of oxygen to the patient If the pressure in the container increases over the economizer valve setting the economizer valve opens again and the cycle repeats This maintains the correct gaseous oxygen flow to the patient at all times To Flow Control Valve Total Flow From Headspace Gas Headspace Gas Figure 7 R E Valve Head Gas Flow Approaching Economizer Pressure Secondary Relief Valve A To Flow Control Valve NER Flow 4 Liquid Withdrawl Circuit Flow f cas from Liquid Withdrawl Circuit Economizer Valve Figure 8 R E Valve Liquid Withdrawl At Economizer Pressure Headspace NER Gas HELIOS Portables Technical Service Manual PN 20562190 Rev C L rr Imo Y mv e mng eb o 2 D N neration Oxygen Delivery The H300 amp H850 are equipped with a pneumatic demand flow control valve Both have 12 position flow control knobs that allow the user to select their prescribed flow rate for delivery The H300 has demand flow at a setting of 1 0 and above and continuous flow at all settings below 1 0 LPM The H850 has continuous flow C from 1 6LPM and demand D flow settings f
61. nob to a continuous flow setting 0 75 on the H300 C6 on the H850 5 Attach the DISS nut and tailpiece of a HELIOS oxygen sup ply line B 701656 SV to a 0 6 89 bar 0 100ps1 gaseous oxygen source as shown in Figure 20 NOTE If an adjustable 0 6 89 bar 0 100 psi gaseous oxygen source is not available the H300 or H850 may be pressurized from a HELIOS reservoir that is at operating pressure 6 Insert the opposite end of the HELIOS oxygen supply line into the quick connect on the front cover of the H300 or H850 as shown in Figure 20 HELIOS Portables Technical Service Manual PN 20562190 Rev C UN i Troubleshooting amp Repair Procedures SAMA AA Figure 20 Pressurizing the HEL1OS Portable 7 Increase the gaseous oxygen source pressure until the test pressure gauge reads 1 52 to 1 59 bar 22 23 psi CAUTION Do not apply leak detector to the vent port near the bottom of the demand flow control valve Valve malfunction will occur 8 Use a liquid leak detector to test all fittings connections and joints 9 Repair or replace any fittings connections or components found to be leaky NOTE Continually monitor the test pressure gauge while leak checking the unit to verify that the pressure in the system re mains above 1 52 bar 22 psi 10 Wet a finger with leak detector and lightly place it against the open end of the vent tube near the bottom of the unit as shown in Figure 21 If bubbling occurs ve
62. normal evaporation rate NER When the flow control knob is in the off position this gas will build up pressure When the pressure reaches the PRV setting this gas is released through the primary relief valve into the atmosphere Figure 6 gives and in ternal view of PRV when there is no oxygen flow demand Oxygen Withdrawal Secondary Relief Valve t To Flow Control To Flow Control Valve No Flow Headspace Gas Economizer Valve Figure 6 Standby At Relief Valve Pressure When the flow selection knob is at any setting other than off and the pressure in the inner vessel is between the economizer valve pressure and the PRV pressure the economizer valve is open When the economizer valve is open gaseous oxygen is forced from the head space in the inner vessel through the economizer valve and to the conserver This process economizes and conserves liquid oxygen by withdrawing the head gas first rather than allowing it to escape through the relief valve Figure 7 is a diagram of the economizer valve when it is open and head gas is being delivered to the patient Whenever head gas is removed from the space above the liquid oxygen the inner vessel internal pressure begins to slightly de crease When the pressure drops to the economizer valve setting the economizer valve closes This causes liquid oxygen to flow up the withdrawal tube a
63. o a continuous flow setting 0 75 on the H300 C6 on the H850 3 Attach the DISS nut and tailpiece of a HELIOS oxygen sup ply line B 701656 SV to a 0 6 90 bar 0 100 psi source of gaseous oxygen 4 Insert the opposite end of the HELIOS oxygen supply line in the quick connect 5 Increase the gaseous oxygen source pressure until the test pressure gauge reads 1 52 bar 22 psi for the H300 or 1 65 bar 24 psi for the H850 NOTE If you do not get a reading on the pressure gauge reset the demand valve as follows Connect one tube of a dual lumen cannula to the bottom cannula barb and breathe in once or twice 6 Disconnect the HELIOS oxygen supply line from the quick connect 7 Allow the unit to sit undisturbed for 10 minutes 8 Verify that the portable maintains a minimum pressure of 1 03 bar 15 psi for the H300 or 1 24 bar 18 psi for the H850 at the end of the evaluation period 9 If the pressure drops below this level locate the leak by per forming the liquid leak detector test RP2 10 Disconnect the test pressure gauge RP13A Liquid Withdrawal Warming Coil R R H300 1 Remove the covers RP4 2 Use an adjustable wrench to hold the R E valve outlet arm with barbed fitting stationary Use a 7 16 inch open end wrench to remove the liquid withdrawal warming coil com pression nut from the R E valve fitting s jqe Od OE 3 Use a 5 16 inch open end wrench to hold the fitting on the s
64. o not store liquid oxygen equipment in a car trunk closet or other confined area Do not place bags blan kets draperies or other fabrics over the equipment when it contains liquid oxygen HELIOS Portables Technical Service Manual PN 20562190 Rev C Da NOTE Liquid oxygen at atmospheric pressure expands at a ratio of approximately 860 1 at 0 bar Opsig when vaporizing into a gas This can occur very rapidly when exposed to the heat in the atmosphere See Figure 1 for comparison Figure 1 LOX to Gas ratio WARNING When using concentrated oxygen the risk of fire is increased WARNING When transporting the H300 or H850 position it horizontally flat side down to ensure that it does not tip over Tipping over and falling off a transport surface could damage the portable or cause personal injury WARNING Do not carry the H300 or H850 under clothing These units normally vent oxygen Placing a portable unit un der clothing may saturate fabrics with oxygen and cause them to burn rapidly if exposed to sparks or flame It may take sev eral hours for oxygen levels in the fabric to return to normal WARNING Do not open the vent valve during non fill use Do not put it in any position other than closed upright and vertical WARNING Always keep oxygen tubing or cannulas away from the path of walking to avoid potential injury CAUTION Consistent with the recommendations of the medi cal community on the
65. oil from their fittings 8 Remove the warming coil 9 Remove the two plastic insulator wraps from the warming coil 1f present and save them for use on the replacement coil Insulator Wraps Figure 34 Insulator Wrap Locations 10 Replace the liquid withdrawal coil by reversing steps 1 9 NOTE Make sure to route the 1 8 in flexible urethane vent tube through the inside of the warming coil positioned directly below HELIOS Portables Technical Service Manual PN 20562190 Rev C i Troubleshooting amp Repair Procedures RP14A Gas Withdrawal Warming Coil R R H300 1 Remove the covers RP4 2 Use an adjustable wrench to hold the R E valve inlet arm with the SRV stationary Use a 7 16 inch open end wrench to remove the gas withdrawal warming coil com pression nut from the R E valve fitting CAUTION Be careful not to dent the top of the container when performing the following step 3 Use an adjustable wrench to hold the vent valve mounting block on the top of the container stationary Use a 7 16 inch open end wrench to remove the remaining gas withdrawal coil compression nut from the mounting block fitting 4 Pull the ends of the gas withdrawal coil from their fittings and remove the coil 5 Replace the gas withdrawal coil by reversing steps 1 4 RP14B Gas Withdrawal Warming Coil R R H850 1 Remove the covers RP4 2 Remove the flexible urethane tube from the barbed fitting on the R E valve
66. opposite end of the HELIOS oxygen supply line into the quick connect on the front cover 8 Disconnect the flexible vent tube from the barbed fitting at the vent valve outlet 9 Connect the test pressure gauge tube to the vent valve barbed fitting as shown in Figure 28 and secure it with a tie wrap 10 Use a 3 16 in 0 48 cm tubing nut B 775067 00 or 2 in 5 08 cm spacer to prop the vent valve lever in the open po sition 11 Obtain a 6 in 15 24 cm micro clamp bar and size 00 rubber stopper Trim the rubber stopper so that it is about 0 5 in amp Repair Procedures 1 27 cm long Place the smaller end of the rubber stopper over the R E valve vent port Position the bar clamp station ary arm on the larger end of the stopper and the moveable arm on the R E valve body Tighten the clamp to seal the vent port dd o OE Figure 31 Bar Clamp Sealing the R E Port 12 Slowly pressurize the H300 or H850 by adjusting the gase ous oxygen source regulator 13 Verify that the secondary relief valve opens audible hiss at 5 24 5 79 bar 76 84 psi NOTE If the SRV opens at a pressure slightly higher than the SRV setting reduce the oxygen source pressure to 3 45 bar 50 psi Release the tubing clamp or hemostat until the pressure in the H300 or H850 drops to 3 45 bar 50 psi Re clamp the inlet tube and repeat the test a second time If the SRV fails the test again replace the SRV RP11 14 Slowly redu
67. pean part numbers please call 44 0 1189 367080 For Asia part numbers please call 61 297 494333 2 Fill out a purchase order containing the following informa tion a Purchase order number b Name and address of billing location c Name and address of shipping location d Quantity part number description and unit cost for each item ordered 3 Telephone or fax CAIRE Inc at one of the numbers listed below to begin immediate processing of the order USA Toll Free Phone 800 48 CAIRE 800 482 2473 Toll Free Fax 888 WE CAIRE To place an order 888 932 2473 Phone 770 257 1299 Fax 770 257 1300 Asia Australia Pacific Rim Phone 61 297 494333 Fax 888 932 2473 Europe Phone 44 0 1344 403100 Fax 44 118 9799245 4 E Mail or fax the completed purchase order for confirma tion to North and South America Asia Pac Rim email to customerservice usaOchartindustries com Africa Europe Middle East email to customerservice europe chartindustries com North and South America fax to 888 932 2473 Asia Pac Rim fax to 770 721 7758 Africa Europe Middle East fax to 44 118 9799245 All new equipment will be shipped either prepaid F O B from the factory or collect via your specified carrier All replacement parts will be sent by UPS prepaid and the shipping charges for equipment and parts will be added to the final invoice Payment for replacement parts are located on CAIRE Inc s
68. pection t Good gt Reads f Yes p Valves Pass gt Fill p Leaks No Leaks No gt Valve No _ gt O A p A Empty A RP7 amp A During Fill After Fill A Leaks A EA RP8 Bad Bad No Fail Yes Yes Yes Replace Faulty Replace Replace Replace Relief Empty amp Empty amp Empty amp Defective QDV Scale Valve Warm the Warm the Warm the Part RP 17 RP 5B RP10 8 Tank Tank Tank RP11 Replace Lip Seal Refill Refill RP 18 QDV Vent Leaks No Valve No After Fill Leaks Yes Yes Replace Replace QDV Vent A Valve RP 17 RP 15 To Use Troubleshooting Chart 1 Start at the upper left corner 2 The top line shows the steps of routine maintenance 3 Unless otherwise noted by the arrows the flow is to the right or down HELIOS Portables Technical Service Manual PN 20562190 Rev C Si Troubleshooting amp Repair Procedures m O Mm mng PP Scale NER Test Demand Empty amp Clean Return QJ Reads Yes gt Pass pp FCV Test p Pass gt Warm gt p Unit To O F RP 22 A Case ull RP 19 Tank Service m
69. quid Oxygen 1 Push one of the tubes from the dual lumen cannula onto the top cannula barb on the H300 or H850 Place the other tube onto the lower cannula barb 2 Properly position the nasal cannula on the patient WARNING Do not use a single lumen cannula or a cannula longer than 7 ft 213 4 cm 3 Turn the flow control knob on the top of the unit to the pre scribed flow setting Oxygen flow will begin when a breath is detected NOTE On the H850 Continuous flow settings are designated by the letter C and demand flow settings are designated by the let ter D On the H300 all settings of 1 0 and above are demand flow only 4 To stop oxygen flow turn the flow control knob to a setting of 0 ki HELIOS Portables Technical Service Manual PN 20562190 Rev C 1 23 Operation Operation Using the Oxygen Supply Line l bi Verify that there is adequate liquid oxygen in the reservoir Insert the flexible oxygen supply tube connector P N B 701656 SV into the quick connect on the front of the H300 or H850 and snap it into place Locate the DISS nut and tailpiece assembly attached to the opposite end of the flexible oxygen supply tube Thread the nut and tailpiece assembly onto the HELIOS res ervoir oxygen outlet connector until secure Push one of the tubes from the dual lumen cannula onto the top cannula barb on the H300 or H850 Place the other tube onto the lower cannula barb
70. rify that the vent valve closes completely If bubbling continues replace the vent valve RP15 Figure 21 Vent Outlet Leak Testing 11 Disconnect the HELIOS oxygen supply line from the quick connect on the front cover NOTE Steps 11 13 are not required for newer units manufactured without the CPC Fitting 12 Insert an open ended HELIOS oxygen supply line coupling B 701686 00 into the quick connect on the front cover 13 Wet a finger with leak detector and lightly place it against the open end of the coupling as shown in Figure 22 If bub bling occurs replace the inline check valve RP24 S9 8110d SO 13H Figure 22 Inline Check Valve Leak Test NOTE A large leak in the check valve may bleed down the pressure before you can insert the coupling for the bubble test You will typically hear gas escape from the quick connect when there is a large check valve leak Verify that 22psi still reads on the pressure gauge 14 Disconnect the test pressure gauge and the HELIOS oxygen supply line 15 Reinstall the case RP4 HELIOS Portables Technical Service Manual PN 20562190 Rev C ia NA Troubleshootinc RP3A Emptying the Unit H300 6 1 Set the flow control valve to a setting of 4 2 Remove the DISS barb adaptor from the Jet Venturi Je Assembly B 778210 00 3 Attach that end of the Jet Venturi to the top cannula barb of 8 the H300 4 Attach the opposite end of the Jet V
71. rom 1 4 The pneumatic demand valve contains a series of chambers valves and diaphragms that are shown below in Figure 9 Dual Lumen so UULLDL Orifice 22 PSIG Plate naq 02 In L lt Precharge Chambers pr 4 Demand O2 Out Flow Port Nai A Slave Vent GAN spag i sensor Diaphragm Figure 9 Demand FCV Internal Diagram A dual lumen cannula provides the patient interface to the de mand valve The lower cannula port on the H300 or H850 is re sponsible for detecting an inhalation and the upper cannula port is responsible for delivering the dose of oxygen CAUTION A dual lumen cannula MUST be used on both con tinuous and demand flow settings NOTE Oxygen will only flow from the top cannula port This is normal behavior Demand Flow When a patient inhales on a demand D flow setting a negative pressure travels through the dual lumen cannula and the bottom cannula barb on the H300 or H850 This pressure acts on the bottom of the sensor diaphragm and combines with atmospheric pressure acting on the top of the diaphragm to push it downward The lowering of the sensor diaphragm allows the pressure to bleed from under the slave diaphragm out of the vent causing the slave diaphragm to push downward This releases a stored volume of oxygen in the precharg
72. s Year Sequential Day of Number of Specific Year Jan 1 001 Unit Produced Dec 31 365 that day Figure 12 Serial Number Structure Before 2010 2 As of October 2010 H300 amp H850 units are identified by differently structured serial numbers as shown in Figure 13 The number begins with the letters CB signifying the manu facturing location followed by the reservoir product code B30 followed by digits signifying the year of manufacture followed by a two digit number to signify the week of the year that the unit was manufactured and ends with digits signifying the unit s production number for that week This serial number is found on a white rectangular sticker placed on the outside of the cryogenic container It can be seen thorough the vents on the side of the outer case CB B31 10 29 0964 taped heel tne tad a Los Designates Product Designates Designates Designates manufacturing code year week of number of location the year units manufactured in that week Figure 13 Current Serial Number Structure HELIOS Portables Technical Service Manual PN 20562190 Rev C Ci Wi Specifications Table 4 Equipment Specifications HELiOS Plus H300 HELiOS Marathon H850 Volume of LOX typical 0381 Weight of LOX at 24 psig 166 kPa Saturation typical 0 9 Ib 0 41 kg 2 0 Ib 0 90 kg Gaseous Oxygen Paii vatent latm 308 L 685 L and 70 F Primary Relief na Opening Pres lt 1 90 bar lt 27 5 psi 1 79 2 07 bar 26
73. s back or any position in between Filling The H300 amp H850 potable units are designed to be filled from any top fill TF reservoir with a standard Puritan Bennett male fill connector QDV Below is a list of CAIRE reservoirs that will fill the H300 amp H850 e Companion C21 C31 C41 e Liberator TF DF 10 20 30 37 45 60 e Low Loss TF DF 31 42 e HELiOS Universal U36 U46 e HELiOS Standard H36 H46 The H300 amp H850 is filled by coupling its female quick discon nect valve QDV with the male QDV on the reservoir and open ing the vent valve Once the QDV s have been connected the vent valve on the port able unit must be opened to initiate flow of liquid into the unit When the vent valve is opened it vents the contents of the inner container to the atmosphere dd o OE Venting the gas inside of the container creates a pressure drop inside of the H300 or H850 This pressure differential causes liq uid oxygen to flow up the reservoir fill tube through the coupled QDV s and into the inner container of the H300 or H850 At the beginning of a fill the liquid oxygen that leaves the res ervoir will vaporize into a gas because the inside of the H300 or H850 container is relatively warm This gas is discharged through the vent valve After a short time the container cools and liquid oxygen is contained When the unit is full liquid oxygen is expelled through the vent valve The venting sound also chan
74. st be clean and dry before filling the H300 H850 Moisture on the fill connectors can lead to leakage of liquid oxygen Moisture can also cause the units to freeze together and can lead to malfunctions of the portable and reservoir WARNING Keep the H300 or H850 upright while drying its fill connector Do not turn upside down 3 Check the reservoir contents indicator to make sure there is enough liquid oxygen for the filling process 4 Make sure the H300 or H850 FCV is in the off 0 position 5 Hold the H300 or H850 upright with one hand and position its female QDV over the male QDV on the reservoir WARNING Do not depress or disturb the plastic poppet in the center of the reservoir s fill connector This will cause an un controlled release of liquid oxygen from the reservoir 6 Place one or both hands on top of the H300 or H850 and press straight downward This will lower the unit and properly en gage the QDV s 7 While holding the unit firmly in this position pull the vent valve lever downward into its open position A hissing sound will be heard 8 Maintain a downward pressure on the H300 or H850 with one hand during the entire filling process 9 Approximately 20 30 seconds into a fill close and reopen the vent valve one or more times to prevent the vent valve from freezing open WARNING Do not leave the HELiOS portable unattended dur ing the filling operation Excessive liquid oxygen discharge can
75. tainless steel container tube stationary Use a 7 16 inch open end wrench to remove the remaining liquid withdrawal coil compression nut from the fitting Figure 33 Compression Nut Removal 4 Pull the ends of the warming coil from their fittings and re move the coil NOTE Make sure to route the flexible urethane vent tube through the inside of the warming coil positioned directly below the vent valve 5 To reinstall the warming coil reverse steps 1 4 HELIOS Portables Technical Service Manual PN 20562190 Rev C ao i Troubleshooting amp Repair Procedures RP13B Liquid Withdrawal Warming Coil R R H850 1 Remove the covers RP4 2 Remove the flexible urethane tube from the barbed fitting on the R E outlet arm 3 Remove the flexible urethane tube from the barbed fitting on the side of the vent valve dl o OE 4 Cut and remove the two zip ties 1f present that secure the liquid withdrawal coil to the gas withdrawal coil at the top of the cryogenic container 5 Use a 3 8 inch open end wrench to hold the R E valve outlet arm with barbed fitting stationary Use a 1 2 inch open end wrench to remove the liquid withdrawal coil compression nut from the R E valve fitting 6 Use a 3 8 inch open end wrench to hold the fitting on the stainless steel container tube stationary Use a 1 2 inch open end wrench to remove the liquid withdrawal compression nut from the fitting 7 Pull the ends of the warming c
76. tting CAUTION High pressure hazard Over tightening the SRV can cause it to operate improperly Do not over tighten the valve 6 Pull the liquid withdrawal warming coil tube out of the fit Always perform the SRV test RP8 after installation ting 8 Replace the outer case RP4 7 Use an adjustable wrench to hold the R E valve inlet arm stationary Use a 1 2 inch open end wrench to remove the secondary relief valve 8 Apply Teflon tape sealant to the threads of the SRV if needed 9 Install the SRV in the inlet arm port of the new R E valve and tighten it until snug 10 Insert the gas withdrawal warming coil smaller diameter coil tube in the R E valve inlet arm fitting and finger tighten the compression nut 11 Insert the liquid withdrawal warming coil larger diameter coil in the R E valve outlet arm port and finger tighten the compression nut 12 Tighten both compression nuts using a 7 16 inch open end wrench on the nuts and an adjustable wrench on the R E valve arms HELIOS Portables Technical Service Manual PN 20562190 Rev C Es i Troubleshooting amp Repair Procedures RP12 Pressure Hold Test 1 Attach a test pressure gauge B 701732 00 to the top can nula barb on the front cover of the H300 or H850 NOTE For newer units manufactured without the CPC Connector the CPC Connector Kit will need to be installed first refer to RP27 then reinstall the front case 2 Set the flow control knob t
77. ube so that the ferrules on each end are seated in their fittings on the fill connector and the container Alternately hand tighten the fill tube nuts to seat the ferrules evenly Use two wrenches to tighten the nuts securely Figure 41 H300 Fill Tube Removal 4 Remove the fill tube 5 Use an adjustable wrench to hold the fill connector mount ing bracket stationary Use a 7 8 inch open end wrench to remove the jam nut from the fill connector assembly 6 Remove the QDV from the mounting bracket HELIOS Portables Technical Service Manual PN 20562190 Rev C i Troubleshooting amp Repair Procedures RP17B QDV Assembly R R H850 1 Remove the covers RP4 2 Use an adjustable wrench to hold the fill connector adaptor stationary Use a second adjustable wrench on the ma chined flats of the fill connector body to loosen and remove the fill connector Figure 43 H850 QDV Removal 3 To replace the QDV assembly reverse steps 1 2 RP18 QDV Lip Seal R R 1 Remove the QDV RP17 2 Hold the QDV body with an adjustable wrench placed on the machined flats Use a second adjustable wrench to re move the lip seal retainer sleeve s jqe od SO T1IH 3 Pull the lip seal out of the fill connector body Figure 44 Lip Seal Removal 4 Insert the stepped spring end of the new lip seal into the corresponding recess in the large end of the QDV body Make sure that it is squarely seated lt Figure 4
78. uration Curve It is important to maintain liquid oxygen saturation boiling at the specified operating pressure of the HELIOS portable As an oxy gen flow demand is put on the system a slight decrease in pressure occurs due to oxygen withdrawal The saturated liquid oxygen in the system vaporizes enough gaseous oxygen to maintain system operating pressure This ensures proper oxygen flow to the patient If the liquid oxygen saturation temperature is too low the corresponding lower saturation pressure causes low oxygen flows to the patient HELIOS Portables Technical Service Manual PN 20562190 Rev C MI Saturation Principles If the saturation pressure of the liquid in the portable is greater than 1 93 bar 28 psi the following symptoms may occur e Increased product loss and evaporation rate e Decreased durations e High flow rates e Continuous flow on demand settings e Venting from relief valves e Relief valves frozen open s jqe od BY BEL If the saturation pressure of the liquid in the portable is lower than 1 2 bar 18 psi the following symptoms may occur e Decreased evaporation rates e Low flow rates e No oxygen flow e Portable will not fill The saturation pressure of the HELIOS portable will be equal to the saturation pressure of the reservoir it was filled from These prob lems can be prevented by always ensuring that the reservoir is filled according to its respective service manual HELIOS Portables Technical Servi
79. use of conserving devices which in cludes the nasal cannula it is recommended that the H300 amp H850 be qualified on patients in the situations it will be used rest exercise Sleep Differences in nasal cannula design may vary the ability to trigger a conserving device L rr O Y D e mng ef o zz N NOTE Figure 2 below is referred to as the fire combustion tri angle This triangle describes the three factors required for fire combustion to occur IGNITION SOURCE Open flame the sun Hot surfaces Sparks and arcs Friction chemical action OXYGEN SOURCE Approximately 16 required for combustion Normal air contains 21 oxygen Some fuel materials contain sufficient oxygen within their make up to support burning Electrical energy Compression of gases GASES LIQUIDS SOLIDS Propane Butane Gasoline Kerosene Coal Plastic Hydrogen Acetylene Turpentine Alcohol Wood Sugar Carbon Monoxide Others Paint Cod Liver Oil Paper Grain Natural Gas Varnish Lacquer Cloth Hay Lotions Olive Oil Wax Cork Creams Others Grease Others Figure 2 Fire Combustion Triangle NOTE To reduce the risk of combustion fire when dealing with LOX please refer to the following suggestions Obtain all replacement parts for medical oxygen equip ment from the manufacturer Use only recommended oxygen compatible cleaning and leak detection products Keep the reservoir upright at all times Secure liquid oxy gen
80. y In these settings the flow orifice plate blocks the gas supply to the area under the slave diaphragm The negative pressure from the patient s first breath vents any residual pres sure that may be present under the slave diaphragm and pushes it off of the demand flow port This causes a continuous flow of oxygen It is important that the FCV still sense a breath periodically in continuous flow to keep the slave diaphragm pushed down Ifa length of time passes without any negative pressure applied by a patient s breath the diaphragm may close and continuous flow may stop Liquid Level Measurement H300 amp H850 units are equipped with mechanical spring scales for liquid measurement The spring indicator is built into the rear cover When the unit is suspended by its contents indica tor strap and held perpendicular to the ground a green bar is displayed in a window on the back of the unit The height of the green bar is proportional to the weight of liquid oxygen inside the H300 or H850 Indicator Springs Figure 11 Contents Indicator unique 8 digit serial numbers shown in Figure 12 The serial number contains the year and calendar day of manufacture as well as the unit s production number that day The H300 amp H850 serial number is etched on the cryogenic container and is visible through the contents indicator window on the back of the unit 08 a E dl o OE 266 116 N Designates Designates Designate
81. y but cautiously raise the container to its normal operating position If substantial con tainer damage has occurred remove the liquid oxygen from the vessel in a safe manner RP3 Purge the unit with an inert gas nitrogen and promptly return it to CAIRE for inspection The container should be prominently marked CONTAINER DROPPED INSPECT FOR DAMAGE Failure to comply with these procedures may result in personal injury and can se riously damage the container WARNING Personnel must remove liquid oxygen and depres surize the unit before removing parts or loosening fittings from a unit Failure to do so may result in personal injury from the extreme cold of liquid oxygen and or the pressure in the vessel WARNING During transfer of liquid oxygen components will become extremely cold Care should be used to avoid any con tact with these components as serious frostbite may result WARNING Extreme high pressure can rupture container or plumbing components Be sure specified pressure relief devices are present in the proper location and functioning properly WARNING The possibility of fire exists when the combina tion of a fuel source of ignition and oxygen is present High concentrations of oxygen air is approximately 21 oxygen greatly enhance the possibility of combustion WARNING Liquid oxygen vessels periodically release small amounts of oxygen gas that must be ventilated to prevent pres sure buildup D
82. y and smoothly If necessary replace the QDV assembly RP17 Faulty vent valve Replace the vent valve RP15 D y paa gt 2 Liquid leaks from the coupled QDVs during Worn or damaged lip seal Replace the QDV lip seal RP18 the fill Unable to disconnect the portable from the reservoir Ensure that the pop off assembly on the reservoir is a Pop off assembly not being utilized being used Do not use force to separate the QDVs Leave the units coupled with the vent valve closed b QDVs are frozen together and let them sit until they warm up enough to discon nect Always ensure that male and female QDV s are cleaned and dried prior to each fill HELIOS Portables Technical Service Manual PN 20562190 Rev C EN Si Troubleshooting amp Repair Procedures Table 6 cont Symptom Probable Cause Corrective Action Liquid leaks from the QDV poppet after filling Engage and disengage the portable onto the reservoir several times to dislodge the ice crystal Always be sure that the male and female QDVs are wiped clean and dry before filling Dirty or damaged QDV poppet Replace the QDV assembly RP17 5 Liquid leaks from the vent valve tube outlet a Vent valve is not fully closed Ensure that the vent valve lever is fully in the closed position The portable has been trans b ported or laid in an improper operating position Ice crystal preventing the QDV from closing

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HELiOS&reg; Portables - Chart Industries

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HELiOS® Portables - Chart Industries