Low Flow MicroBlender Service Manual
Contents
1. 2 5 Raise oxygen pressure slowly Alarm bypass should reset to normal function when pressure reaches 44 PSIG 3 10 kg cm or below 3 0 Outlet Flow Test 3 1 With 0 35 LPM flowmeter connected to auxiliary outlet fitting set O selection knob at 60 and oxygen air supply sources at 50 PSIG 3 52 kg cm static 3 2 Turn flowmeter control knob completely open Flowmeter should read a minimum of 30 LPM 3 3 Reduce air pressure to 0 PSIG 0 kg cm Flowmeter should read a minimum of 30 LPM Audible alarm should sound 3 4 Increase air pressure to 50 PSIG 3 52 kg cm and rotate O selection knob against 2196 stop Flowmeter should read a minimum of 30 LPM 3 5 Rotate O selection knob against 100 stop Flowmeter should read a minimum of 30 LPM 3 6 Set O selection knob at 60 Reduce O pressure to 0 PSIG 0 kg cm Flowmeter should read a minimum of 30 LPM Audible alarm should sound 3 7 Remove flowmeter form auxiliary outlet and connect to primary outlet fitting Repeat steps 3 2 through 3 6 3 8 Remove flowmeter from primary outlet fitting L1130 Rev C Service Repair and Calibration 4 0 Inlet Check Valve Leak Test 4 1 Disconnect oxygen hose assembly from gas source Remove all connections from blender outlets to ensure that there is no outlet flow from blender 4 2 Place free end of oxygen supply hose under water to check for leakage past oxygen inlet check valve Gradually increase air supply2. 00138 each to two balance block assemblies P N 03892 21 2 Using a 5 32 Allen wrench and a torque wrench secure the two balance block assemblies to the valve block with four screws P N 3826 Tighten screws to 60 in Ib Note Align balance block assemblies squarely with valve block prior to tightening in place 22 22 0 Air Inlet Assembly Bottom Left Rear of Valve Block 22 1 Install duckbill check valve P N 03895 in air inlet port with bill facing inside cavity 22 2 Place washer P N 03897 on top of duckbill check valve Raised step fits into duckbill Note Lightly lubricate both sides of washer to prevent binding or twisting between duckbill check valve and nylon cone inlet filter 22 3 Place large diameter end of nylon cone inlet filter P N 06804 into air inlet port on valve block Note Install air inlet fitting P N 03833 with lubricated O ring P N 03808 into air inlet port on valve block and hand tighten in place 22 4 Using a 3 4 wrench secure air inlet into valve block Torque to 10 ft Ib Figure 26 23 0 Oxygen Inlet Assembly Bottom Rear Right of Valve Block 23 1 Hand tighten oxygen inlet assembly into valve block port L1130 Rev C Service Repair and Calibration 23 2 With a 3 4 wrench secure assembly to valve block Torque to 10 ft lb 24 0 Alarm Cap Assembly 24 1 From below valve block carefully install alarm cap assembly into valve block Hand tighten o
3. 10096 concentration and air source pressure is reduced or lost the unit will not alarm because it will continue to deliver the selected 10096 concentration The Low Flow MicroBlender is left connected to source gases but is not being used i e no output flow or bleed flow the unit will not alarm if a 20 PSI 1 41kg cm or greater pressure differential develops It is felt that if the blender is not in use an alarm under these conditions may be an unnecessary distraction or nuisance Gas Outlets Figure 6 The primary gas outlet is used for unmetered high flow applications in the range of 3 30 LPM The flow of gas is automatically initiated by an attachment of a pneumatic device to the outlet port A check valve is unseated upon connection L1130 Rev C allowing the mixed gases to flow through the primary outlet Figure 6 The auxiliary outlet is located on the right side of the Low Flow MicroBlender and is designed to deliver metered gas through a flowmeter Mixed gas may be delivered within specified accuracy tolerance from this outlet at 0 5 LPM and above When a connection is made to the auxiliary outlet a 2 5 3 5 LPM bleed of mixed gas to the atmosphere is activated This bleed is essential to ensure accuracy of concentration for applications utilizing low flows down to 3 LPM EE p careFfusion BIRD Low Flow Air O Blender Primary gum outlet port Auxiliary E Ji outlet port Figure 7
4. 70 kg cm Output flow rate will be diminished if either supply pressure is below 50 PSIG 3 52 kg cm and will be increased if both supply pressures are above 50 PSIG 3 52 kg cm Knob Adjustment Range 21 to 10096 Primary Outlet scirem tenens Left Side Port Facing unit Primary Outlet Flow Range 3 to 30 LPM no bleed Maximum Flow 60 knob setting 50 PSIG 3 52 kg cm inlet pressure 2 30 LPM Flow 21 or 100 knob setting 50 PSIG 3 52 kg cm inlet pressure 2 30 LPM Bypass flow loss of air or O 50 PSIG 3 52 kg cm inlet pressure of remaining else oecewesrand cn chernccns edunt tpud 2 30 LPM Auxiliary Outlet ebay menea co dear perma aka Right Side facing unit Auxiliary Outlet Flow Range 0 to 30 LPM Bleed 2 5 3 5 LPM Accuracy with inlet gases within 10 PSIG 0 70 kg cm and each gas pressure greater than 30 PSIG 2 11 kg cm but less than 75 PSIG 5 27 KOOMA A astanira 3 of full scale over the stated flow ranges i e 3 percentage points at any reading 34 L1130 Rev C Product Specifications Alarm Bypass Activation Alarm Sound Generator Alarm Bypass Reset oorr Pressure Drop e mta pre Si Kod ioa ip einiud 20 2 PSIG 1 41 0 14 kg cm When inlet gas pressures differ by a nominal 20 PSIG 1 41 kg cm or more provided maximum pressure
5. N 03808 with lubricant P N 00631 and assemble to O connector P N 03834 2 6 Insert duckbill check valve P N 03895 washer P N 03897 and cone filter P N 06804 into O connector 03895 03897 06804 03835L Figure 11 L1130 Rev C Note Step on washer fits into duckbill check valve 2 7 Lightly lubricate O rings P N 03808 31030 with lubricant P N 00631 and assemble to O filter retainer P N 03835L 2 8 Using two 2 3 4 open end wrenches tighten the O connector to the filter retainer Torque to 10 ft Ib 2 9 Take unlubricated O ring P N 00143 and assemble to O tail piece P N 03837 2 10 Insert O tail piece into nut P N 00822 and using a 1 8 Allen wrench tighten to O connector Torque to 10 ft Ib 2 11 Set O inlet aside for final assembly to vale block 3 0 Air Inlet Disassembly Reassembly Bottom Rear of MicroBlender 3 1 With a 3 4 open end wrench remove the air inlet assembly with O ring Remove and discard O ring 3 2 Remove the inlet cone filter located in valve block and discard Note The filter may have to be grasped with pliers to remove 3 3 Next remove the washer and duckbill check valve from the valve block assembly Discard check valve and washer Clean all parts with ultrasonic cleaner Ensure all passages are blown completely dry before beginning reassembly Service Repair and Calibration Air Inlet Reassembly nee nl Vis Ko Figu
6. Recalibrate or service further properly as necessary see Section 4 Inlet gas contamination alarm Disassemble clean module malfunction reassemble calibrate install inlet filter water trap on air line and correct cause of gas contamination Low Flow MicroBlender in Alarm Reed Assembly Remove and replace bypass No Alarm P N 05436 improperly installed or damaged BEER Alarm gas orifice obstructed Remove obstruction from orifice Low Flow MicroBlender Balance module not Disassemble balance module accurate only when inlet gas functioning properly clean replace diaphragms s pressures are equal reassemble and test 6 L1130 Rev C ir and Calibration Repa Section 4 Service 9 99 S uue y ssed g Jepue goJoI N xipueddy ees i i z2800 osole 782860 9caso SOB O LeBeo osso Y 26820 S68 0 7WweBeo cete 098 0 Figure 8 Low Flow MicroBlender Air Oxygen Blender Components Illustration 7 L1130 Rev C Service Repair and Calibration WARNING The Low Flow MicroBlender should be serviced and or calibrated by a CareFusion trained hospital dealer service technician or CareFusion Caution Before attempting to service repair the Low Flow MicroBlender the service person should first be familiar with its design and operation as explained in Section 1 of this manual A numbering system is utilized so that one can easily identify the steps involved with each op
7. kg cm oxygen 4 Audible alarm souce from blender 5 Reconnect 50 PSIG 3 52 kg cm oxygen 5 Audible alarm stops Verify oxygen source from blender concentration 57 to 63 with an oxygen analyzer 6 Set oxygen flowmeter at 1 LPM 6 Oxygen analyzer should read 57 to 63 when measured from the flowmeter outlet 28 L1130 Rev C Section 6 Cleaning and Sterilization Blenders manufactured by Carefusion are compatible with ethylene oxide gas sterilization Caution Do not steam autoclave or otherwise subject Low Flow Micro Blender to temperatures over 145 F 62 C L1130 Rev C 29 Caution Do not immerse assembled MicroBlender into liquid decontamination agents Caution Do not use any strong solvent or abrasive cleaners on labels Use an all purpose liquid cleaner on exterior Section 7 Maintenance and Service Policy Caution The Low Flow Micro Blender should be serviced or calibrated by a CareFusion trained hospital dealer service technician The Low Flow MicroBlender should be subject to a regular maintenance and service program including periodic accuracy checks between normal overhauls Although the frequency of these tests will vary depending on degree and severity of service it is recommended that they be performed at least once every six 6 months under the best conditions 30 Elastomer components such as diaphragms and O rings are designed to function satisfactori
8. lubricate Replacement parts p ent parts O rings P N 00348 00193 and install on Part No Qty Description front seat P N 03926 00193 1 O ring 6 14 Inspect proportional valve P N 03929 00306 1 O ring for scratches nicks wear and cleanliness 00348 1 O ring 6 15 Using lubricant P N 00631 lightly 05279 1 O ring lubricate O ring P N 07849 and install in 07849 1 O ring groove of rear valve seat P N 03927 5163B 1 Spring 6 16 Set valve stem front seat assembly rear seat proportional valve spring aside for 6 8 Inspect valve seat faces carefully They final assembly should have a sharp edge void of chamfer nicks or wear Replace if necessary 7 0 Bypass Disassembly Reassembly Both sides rear of MicroBlender Caution Any damage to seats may 7 1 Using a slender pointed probe remove prevent proper calibration sealant plug from both side caps 7 2 Using an 1 8 Allen wrench unscrew 6 9 Install absolutely clean 1 8 ball P N adjuster from left and right hand side bypass 03931 into valve stem P N 03928 seats 7 3 Remove and discard O ring from each Note Do not use lubricants or any other adjuster substance as a means of securing ball into stem The ball joint interface consisting of ball P N 03931 stem P N 03928 and poppet valve P N 03929 MUST be kept clean and free of contaminants to insure accurate calibration 14 L1130 Rev C Service Repair and Calibration Note A small spring i
9. of either supply gas does not exceed 75 PSIG 5 27 kg cm or a minimum pressure of 40 PSIG 2 81 kg cm In other words one supply gas must remain at 40 PSIG 2 81 kg cm or above to provide enough gas pressure to operate the alarm in the event the other supply pressure falls to 20 PSIG 1 41 kg cm or below There will be no alarm or bypass if the control knob is set to 21 and source oxygen pressure is reduced or turned off Similarly if control is set to 100 there will be no alarm if air pressure is reduced or turned off In either case the unit will continue to deliver the selected concentration of 21 or 100 There will be no alarm under condition of 20 PSIG 1 41 kg cm or greater source pressure differential if unit is not in use i e no output flow or bleed flow Vibrating Reed When inlet pressure differential is 6 PSI 0 42 kg cm or less Less than 6 PSIG 0 42 kg cm at 50 PSIG 3 52 kg cm inlet pressures and 10 LPM flow NOTE Product specifications are subject to change without notice L1130 Rev C 35 Section 10 Warranty The products of CareFusion Corporation CareFusion herein are warranted to be free from defects in materials and workmanship and to meet the published specifications The liability of CareFusion under this warranty is limited to replacing repairing or issuing credit at the discretion of CareFusion for the parts that become defective or fail to meet published specifications duri
10. on the MicroBlender control knob Figure 4 With the control knob at the full counter clockwise position 2196 the double ended valve will completely close off the flow of oxygen allowing only the air to flow By adjusting the control knob in the full clock wise 100 position the flow of air is blocked permitting only the flow of oxygen through the blender outlet Alarm Bypass Figure 5 The alarm feature provides for an audible alarm if source pressures differ by 20 PSI 1 41 kg cm or more The primary purpose of the alarm is to audibly warn the operator of an excessive pressure drop or depletion of either source gas The alarm will also activate in the event of elevation of either source gas when a difference of 20 PSI 1 41 kg cm or more is detected Should both gas pressures oxygen or medical air increase or decrease simultaneously and a 20 PSI 1 41 kg cm differential is not seen there will not be an audible alarm If either source gas pressure drops the output pressure of the blender will drop similarly since the source gases are always balanced to that of the lower pressure The bypass function operates in unison with the alarm The alarm bypass poppet communicates directly with the air supply on one end and the oxygen supply on the other Figure 5 When the two source gases are near equal in pressure the alarm bypass poppet is positioned over the bypass channel blocking the flow of both
11. pressure from 0 to 80 PSIG 0 to 5 62 kg cm L1130 Rev C 27 4 3 Reverse above procedure to check for leakage past air inlet check valve 4 4 Replace duckbill check valves P N 03895 in inlets if bubbles indicate any leakage 4 5 Disconnect both high pressure lines from blender remove blender from test assembly Calibration is now complete Section 5 Performance Check Prior to placing the Low Flow MicroBlender After satisfactory completion of the into clinical use perform the following test Performance Check refer to Section 7 Maintenance and Servie Policy WARNING If the Low Flow MicroBlender does not function as described below contact CareFusion technical support Do not use the blender until correct performance is verified Use Setup Procedure as described in Section 5 Blender Adjustment Blender Response 1 Connect 50 5 PSIG 3 52 035 kg 1 Alarm Bypass should not activate cm air oxygen source gases Adjust control knob to 6096 Connect flowmeter to auxiliary outlet set flow to 5 LPM minimum 2 Connect an oxygen flowmeter to auxiliary 2 Audible alarm outlet to activate auxiliary bleed and disconnect 50 PSIG 3 52 kg cm air souce from blender Note The blender must be flowing gas for the alarm to activate 3 Reconnect 50 PSIG 3 52 kg cm air 3 Audible alarm stops Verify oxygen source to blender concentration 57 to 63 with an oxygen analyzer 4 Disconnect 50 PSIG 3 52
12. 10 1 Using blender alarm wrench P N 10138 unscrew alarm cap 10 2 Remove diffuser foam and discard 10 3 Remove spring Figure 17 Alarm Cap Reassembly Replacement parts Part No Qty Description 03903 1 Diffuser 05436 1 Alarm Cap 10 4 Install spring P N 31000 with its wide base on top of reed inside alarm cap P N 05326 10 5 Place diffuser P N 03903 into alarm cap above spring 10 6 Check alarm assembly for proper audible function 10 7 Set alarm assembly aside for final assembly 11 0 Alarm Check Valve Disassembly Reassembly Rear of MicroBlender 11 1 With spanner wrench P N 03849 remove cap from rear of valve block 11 2 Remove and discard O ring from cap 11 3 Using a 5 32 Allen wrench remove checkball retainer rubber checkball and spring 11 4 Remove and discard O ring and rubber checkball Clean all parts with an ultrasonic cleaner Ensure all passages are blown completely dry before beginning reassembly L1130 Rev C Service Repair and Calibration 12 0 Valve Block 12 1 Clean valve block with an ultrasonic cleaner Ensure all passages are blown completely dry before assembly Inspect for any sign of excessive wear damage or any condition that may affect proper function Sequence Index of Final Assembly 13 Alarm Check Valve Assembly 14 Front Rear Seat Assembly Figure 15 15 Auxiliary Bypass Assembly 16 Muffler Alarm Check Valve Reassembly 17 Outlet Cap Re
13. 8 Reassemble block CD using same procedure as AB beginning with Step 1 4 1 19 Lightly lubricate O rings P N 00138 with lubricant P N 00631 1 20 Place block assemblies and O rings P N 00138 aside for final assembly Valve Block 2 0 Oxygen Inlet Disassembly Reassembly Bottom Rear of MicroBlender Note This assembly threads into the block with a left handed thread A single groove on nut indicates left hand thread 2 1 With a 3 4 open end wrench remove the oxygen inlet assembly from the valve block 2 2 Using a second 3 4 open end wrench separate the O connector from the filter retainer 2 3 Use a 3 4 open end wrench to stabilize the filter retainer then remove the O tail piece using a 1 8 Allen wrench 2 4 Remove the filter duckbill check valve O rings and washer and discard Note The filter may have to be grasped with pliers to remove 10 L1130 Rev C Service Repair and Calibration Clean all parts with an ultrasonic cleaner Ensure all passages are blown completely dry before beginning reassembly Oxygen Inlet Reassembly Replacement parts Part No Qty Description 00143 1 O ring 31030 1 O ring 03808 2 O ring 03895 1 Duckbill Check Valve 03897 1 Washer 06804 1 Inlet Cone Filter Note Prior to installation place a small amount of Vibra Tite P N 03884 on threads of O Tailpiece P N 03837 and let Vibra Tite dry for at least 10 minutes 2 5 Lightly lubricate O ring P
14. 9 CareFusion Low Flow MicroBlender Service Manual L1130 Rev C This document is protected by United States and International Copyright laws This document may not be copied reproduced translated stored in a retrieval system transmitted in any form or reduced to any electronic medium or machine readable form in whole or in part without the written permission of CareFusion Information in this document is subject to change without notice This document is for informational purposes only and should not be considered as replacing or supplementing the terms and conditions of the License Agreement 1991 2013 CareFusion Corporation or one of its subsidiaries All rights reserved CareFusion and the CareFusion logo are trademarks of CareFusion Corporation or one of its subsidiaries All other trademarks are the property of their respective owners CareFusion CareFusion Germany 234 GmbH ud 22745 Savi Ranch Parkway EC REP Leibnizstrasse 7 Yorba Linda CA 92887 97204 Hoechberg U S A Germany 800 231 2466 toll free 49 931 4972 0 tel 714 283 2228 tel 49 931 4972 423 fax 714 283 8493 fax 0086 Document part number L1130 Revision C ii L1130 Rev C How to get help If you need assistance while servicing or operating the ventilator or you require additional information contact CareFusion Technical support Hours 6 00 a m to 5 00 p m PST Monday through Friday 714 283 2228 follow the prompts to tec
15. N 03814 with two holes in valve block front surface Gently push front plate against blender front surface 14 8 Loosely hand fasten nut P N 03819 with wider shoulder against front plate DO NOT install O ring P N 05279 in groove at this time 14 9 Install control knob with black pointer against 21 O stop at left side of valve block 14 10 Using a 9 32 nut driver lightly tighten collet nut on control knob assembly to valve stem arith NX Mama SAN aul hed 57 TE yim Ls ie bi zu Cea m TY is ISTA Om NN WON Figure 20 L1130 Rev C Service Repair and Calibration 15 0 Alarm Bypass Assembly 15 6 Install spring P N 03817A through Left Right Side Rear of Valve Block bypass seat P N 04896 into the recess in 15 1 Position blender resting on its bypass poppet valve P N 21984 top side After verifying all O rings are 15 7 Using an 1 8 Allen wrench screw lubricated insert assembled bypass sleeve bypass adjuster screw P N 20895 with P N 04897 into valve block Using spanner lubricated O ring P N 00114 into bypass wrench P N 03849 secure sleeve into seat until adjuster is slightly recessed into valve block Torque to 30 in lb valve seat Caution Be extremely careful not to damage O rings P N 30514 04639B during bypass sleeve P N 04896 I oa H SSeS CRISS iz installation See Appendix MicroBlender Bypass Alarm Sleeve CRGA UOTA BILE eed SST 20895 SAAT Da 2 PL
16. Note Ensure that bypass poppet valve P N ACEI 21984 with two 2 lubricated O rings P N 30514 04639B 03817A aaro 2PL 2PL 2PL 05307 is inside sleeve See Appendix MicroBlender Bypass Alarm Sleeve 15 2 Install one spring P N 03817A through bypass sleeve into bypass poppet Figure 21 valve port 16 0 Muffler Assembly Note Ensure spring P N 03817A is Bonomi Center or Valve Block positioned into the recess of the bypass 16 1 Install one 1 muffler P N 03319 into poppet P N 21984 valve block bleed port 16 2 With a small screwdriver secure the 15 3 Using an 1 8 Allen wrench screw star retainer P N 003314 over the muffler bypass adjuster P N 20895 with lightly lubricated O ring P N 00144 into bypass sleeve until adjuster is slightly recessed into sleeve 15 4 Position blender to rest on bypass sleeve side and install bypass seat P N 04896 with lubricated O ring P N 01943 using spanner wrench P N 03849 secure seat to valve block Torque to 30 in Ib 15 5 Carefully insert 1 8 Allen wrench through bypass seat P N 04896 into bypass poppet valve Push bypass poppet against spring P N 03817A and check for smooth movement and recoil action Figure 22 L1130 Rev C 19 Service Repair and Calibration 19 0 Primary Outlet Assembly Left Side 17 0 Outlet Cap Bottom Front of Valve Front of Valve Block Block 19 1 Position blender assembly on its side 17 1 Using spa
17. Section 2 Warnings Cautions and Notes The Low Flow MicroBlender should be operated by trained qualified medical personnel under the direct supervision of a licensed physician Before clinical application the WARNINGS CAUTIONS and NOTES should be read and understood WARNING Conditions may exist that could adversely affect the operator or patient WARNINGS Respirable medical air should meet the requirements of an ANSI Z86 1 1973 commodity specification for air Type 1 Grade D or better It should also have a dew point of 5 F 2 75 C or more below the lowest temperatures to which the air distribution piping system is exposed Particulate condensed water in the air supply is harmful to many medical devices utilizing or controlling compressed air Filters frequently become restricted by deposits of dissolved salts and other airborne matter While compressed air is typically the major source of deposits other medical gases and distribution systems are capable of delivering filter restricting matter This restriction of filters causes insidious reduction in flow capability of the blender possibly starving a downstream device such as a ventilator causing malfunction Therefore it is very important to perform preventative maintenance minimally at recommended intervals on devices with filters especially if the gas supply is not known to be clean and or free of condensed water CAUTION Conditions may exis
18. aphragm alignment tool P N 03850 into Block B making sure the poppet pin on diaphragm seats into alignment tool Figure 9 Service Repair and Calibration 1 8 Fasten block A and B together loosely with two 2 screws P N 03825 1 9 Holding the two 2 diaphragm alignment tools in place lay the entire assembly with one of it s surfaces on a flat surface This will align blocks properly for mating with valve block 1 10 Using a 5 32 Allen wrench tighten the previously installed two 2 screws holding blocks A and B together Torque to 60 in Ib 1 11 Install and tighten using a 5 32 Allen wrench remaining two 2 screws P N 03825 to opposite side of A and B block assembly Torque to 60 in Ib 1 12 Remove both diaphragm alignment tools and place A and B block assembly on its side 1 13 Place ball P N 00770 into seat 1 14 Lightly lubricate O ring P N 05186 with lubricant P N 00631 and install on Balance Block Cap P N 20877 1 15 Place a very small amount of lubricant grease P N 03851 on one end of spring P N 31230 then install lubricated end into Figure 10 block cap Note Lubricant on spring end ensures adherence of spring to cap during placement into block assembly 1 16 Install cap and spring into block assembly and tighten in place using spanner wrench Torque to 30 in lb 1 17 Place block assembly AB on opposite side and repeat steps 1 13 to 1 16 1 1
19. ation required for one Low Flow MicroBlender 32 L1130 Rev C Low Flow MicroBlender Overhaul Kit P N 10003 Part Number 00114 00138 00143 00193 00306 00348 01943 03314 03319 03808 03858A 03895 03897 03903 04639 04899 05163B 05186 05279 05307 06804 07849 33621 30514 31030 04639B L1130 Rev C Description O ring 117 x 040 O ring 176 x 070 O ring 239 x 070 O ring 364 x 070 O ring 114 x 070 O ring 301 x 070 O ring 437 x 070 Starwasher Muffler O ring 468 1D x 078 Diaphragm Assembly Duckbill Check Valve Washer Step Foam Diffuser O ring 426 x 040 Ball Rubber Check Valve Spring 093 x 053 x 300 O ring 414 x 072 O ring 614 x 070 O ring 239 x 070 Nylon Filter O ring 313 x 051 Ball Rubber 3 16 dia O ring 410 x 0050 nitrile O ring 364 x 070 O ring 429 x 040 33 Quantity o N Y NE NEW a lt 5 a O NDN A M a NN BA aw Section 9 Product Specifications Low Flow MicroBlender pl E c 3 1 2 9 cm H x 2 1 4 5 6 cm W not including inlet and outlet fittings x 4 1 2 11 5 cm D Mei Me ae e elemi 2 3 4 Ibs 1 25 kg Gas Supply Pressure Air and O 30 75 PSIG 2 11 kg cm 5 27 kg cm air and oxygen must be within 20 PSI differential The Low Flow MicroBlender will maintain stated accuracy at supply pressures provided the differential between supply pressures does not exceed 10 PSIG 0
20. croBlender 1 1 With a 5 32 Allen wrench remove the top four screws securing the two balance block assemblies to the valve block Note The balance block assemblies are identical and interchangeable For ease of assembly the blocks may be labeled A B C and D 1 2 Using spanner wrench remove the caps 2 each per balance block assembly Remove O rings and discard Note Poppet spring and ball will be loose following removal of balance block cap Remove components and set aside 1 3 With a 5 32 Allen wrench remove each of four 4 screws securing each pair of blocks Remove the diaphragms and O rings and discard Clean all parts with an ultrasonic cleaner Ensure all passages are blown completely dry before beginning assembly Be sure that the poppet seat areas are perfectly clean Balance block assembly replacement parts Part No Qty Description 00138 8 O ring 03858A 2 Diaphragm 05186 4 O ring L1130 Rev C Balance Block Reassembly 1 4 Holding diaphragm alignment tool P N 03850 in hand place the A Block onto the alignment tool with the diaphragm cavity facing up 1 5 Place diaphragm P N 038584 into cavity Note Make sure poppet pin on diaphragm seats into diaphragm alignment tool P N 03850 1 6 Place B block on top of assembly with diaphragm cavity facing down Note Align block assemblies for proper gas flow Three holes on each block bottom must be aligned 1 7 Insert second di
21. d O ring from front seat locknut Using an 11 16 open end wrench remove front seat lock nut Remove front plate by gently separating from block assembly 6 4 Using spanner wrench P N 03849 remove the front seat incorporating valve stem Remove O rings and discard Note Small 1 8 ball may be loose and drop from assembly 6 5 Rotate valve stem counterclockwise to remove from front seat Remove O rings from valve assembly and discard 6 6 Carefully remove poppet valve and spring from rear seat 6 7 Using a 1 8 Allen wrench remove the rear seat and O ring from valve body Discard O ring Clean all parts with an ultrasonic cleaner Ensure all passages are blown completely dry before beginning reassembly Service Repair and Calibration Control Knob Front and Rear Seat 6 10 Using lubricant P N 00631 lubricate Reassembly O ring P N 00306 and place into groove in valve stem P N 03928 6 11 Install valve stem assembly P N 03928 into front seat P N 03926 and rotate valve stem clockwise until O ring P N 00306 bottoms out Rotate valve A ASRS PN aw IN i sarda dard RU DAN counterclockwise two turns ETD Ti Repeat above procedure 10 times and ensure that valve stem movement is smooth uniformly tight and without any detectable end play 6 12 Back out stem turn counterclockwise until valve stem O ring P N 00306 is just Figure 15 inside the front seat P N 03926 6 13 Using lubricant P N 00631
22. ection knob 20 7 Carefully remove O selection knob clockwise until black pointer rests against make certain not to upset or change valve right side stop 100 O stem position 20 8 Adjust air pressure regulator between 10 15 PSIG 0 70 1 05 kg cm 20 9 Using spanner wrench P N 03849 carefully and slowly turn front seat P N 03926 clockwise until bubbling at water L1130 Rev C 21 Service Repair and Calibration surface just stops STOP adjusting seat the very moment bubbling ends Be aware that bubbling may continue after seat and valve have made contact A maximum leak of 4 bubbles per minute is acceptable Note If bubbling continues at a rate greater than 4 bubbles per minute either the rear seat or valve stem are damaged and should be replaced 20 10 Using an 11 16 wrench secure nut P N 03819 checking that seat position has not changed during tightening of nut by insuring that bubbling has just stopped and does not reappear Torque nut to 40 in Ib Note Verify front plate P N 03814 is aligned with valve block 20 11 Install O ring P N 05279 on nut Carefully reinstall O selection with pointer at right side 10076 O stop Torque collet nut to 4 in Ib 20 12 Rotate knob counter clockwise to verify left hand 21 O stop is bubbling at a rate of less than 4 bubbles per minute Install cap on knob 21 0 Balance Block Assembly Top of Valve Block 21 1 Assemble four lubricated O rings P N
23. ep 20 1 20 12 in Final Assembly Procedure 1 3 Adjust control knob at 6096 oxygen and set air oxygen pressures each at 50 PSIG 3 52 kg cm 1 4 Remove flowmeter adapter and flowmeter from primary outlet of blender 1 5 Connect the flowmeter with adapter to the auxiliary outlet on the right side 1 6 Adjust flowmeter to 0 5 LPM and check oxygen analyzer Reading should be between 57 0 63 0 1 7 Insert bleed test tube P N 10108 assembly into bleed port at bottom of valve block The bleed flow should read 2 5 to 3 5 LPM Note Should blender not meet this specification 1 6 or 1 7 inspect bleed orifice in auxiliary outlet or bleed orifice in valve block for occlusion 1 8 Increase air pressure from 50 PSIG 3 52 kg cm to 60 PSIG 4 22 kg cm Oxygen percent on oxygen analyzer should read 57 63 1 9 Lower air pressure from 60 PSIG 4 22 kg cm to 40 PSIG 2 81 kg cm Oxygen percent on oxygen analyzer should read 57 63 Repeat steps 1 8 and 1 9 by increasing or decreasing oxygen supply pressure 1 10 Remove bleed test tube assembly from bleed port Service Repair and Calibration 2 0 Alarm Calibration The alarm system is designed to sound an audible tone if the inlet pressures are different by 20 PSI 1 41 kg cm or more such as if either source gas failed When the Low Flow MicroBlender is in the alarm phase the remaining or higher pressure gas is routed to the blender outlet Some
24. eration A Service Calibration Tools Assembling and disassembling the Low Flow MicroBlender requires special tools shown in Figure 8 which are available from CareFusion individually or as a kit P N 03852 Part No Description 00631 Lubricant 03850 Alignment Assembly Tool 2 03849 Spanner Wrench 03851 Lubricant Grease 03884 Vibra Tite Thread locking Compound 10101 Tube Assembly Leak Test 10102 Tube Assembly Pressure Test 10108 Fitting Bleed Test 10138 Blender Alarm Tool Additional tools and supplies recommended for service repair 5 32 Allen wrench 1 8 Allen wrench 9 32 Hex nut driver 3 4 Open end or adjustable wrenches 2 11 16 Open end or adjustable wrench 7 32 Allen wrench Small needle nose pliers Isopropyl Alcohol A Low Flow MicroBlender Maintenance Kit may be ordered by specifying P N 10003 This kit includes all parts necessary for periodic preventive maintenance CareFusion recommends using an ultrasonic cleaner for cleaning all components However cleaning with an all purpose liquid cleaner and rinsing with clear warm water may be substituted Both methods require thoroughly blow drying all passages before final assembly When using an ultrasonic cleaner follow the manufacturers instructions L1130 Rev C Service Repair and Calibration B Disassembly Reassembly Procedure Figure 9 and 10 Balance Regulators 1 0 Balance Block Disassembly Reassembly Top of Mi
25. eter outlet L1130 Rev C Service Repair and Calibration Attach one end of sampling hose P N 07572 to flowmeter and other end to bifurcation P N 01003 Ensure one way valve P N 05537 is secured into remaining large opening of bifurcation Attach remaining outlet of bifurcation to oxygen analyzer probe The system is now ready for calibration D Calibration Procedure Low Flow MicroBlender 1 0 Proportioning Valve Note Proportioning Valve endpoints are set by following final assembly procedure 20 0 Front and Rear Seat Leak Test page XX 1 1 Turn air and oxygen sources ON Adjust both regulators to a static 50 PSIG and adjust flowmeter to 3 LPM 1 2 Rotate control knob counterclockwise to 2196 stop allow analyzer to stabilize Perform the following checks Knob Pressure Oxygen Setting Oxygen Air Concentration 21 50 PSIG 50 PSIG 21 096 22 0 30 50 PSIG 50 PSIG 27 096 33 0 60 50 PSIG 50 PSIG 57 0 63 0 90 50 PSIG 50 PSIG 87 0 93 0 100 50 PSIG 50 PSIG 99 0 100 3 52kg cm 3 52 kg cm 30 50 PSIG 40 PSIG 27 0 33 0 60 50 PSIG 40 PSIG 57 0 63 0 90 50 PSIG 40 PSIG 87 0 93 0 3 52kg cm 2 81 kg cm 30 50 PSIG 60 PSIG 27 0 33 0 60 50 PSIG 60 PSIG 57 0 63 0 90 50 PSIG 60 PSIG 87 0 93 0 3 52kg cm 4 22 kg cm L1130 Rev C If concentrations meet specifications continue on If concentrations do not meet specifications repeat St
26. gas will also flow through the alarm reed valve creating an audible tone This gas then exits out the bottom of the blender module 2 1 Ensure air and oxygen regulators are adjusted to a static 50 PSIG 3 52 kg cm align control knob indicator with 60 ensure flowmeter is connected to primary outlet and is set to 3 LPM 2 2 Reduce air pressure until the audible alarm sounds The air pressure should read 30 2 PSIG 2 11 0 14 kg cm e f alarm sounds above this pressure rotate adjuster clockwise left side of blender with a 1 8 Allen wrench until alarm sounds at 30 2 PSIG 2 1 0 14 kg cm e f alarm sounds below this pressure rotate adjuster counterclockwise left side of blender with an 1 8 Allen wrench until alarm sounds at 30 2 PSIG 2 11 0 14 kg cm 2 3 Raise air pressure slowly Alarm bypass should reset to normal function when pressure reaches 44 PSIG 3 10 kg cm or below 2 4 Restore air pressure to 50 PSIG 3 52 kg cm and reduce oxygen pressure until the audible alarm sounds The oxygen pressure must be 30 2 PSIG 2 11 0 14 kg cm 26 e f alarm sounds above this pressure rotate adjuster clockwise right side of blender with a 1 8 Allen wrench until alarm sounds at 30 2 PSIG 2 11 0 14 kg cm e f alarm sounds below this pressure rotate adjuster counterclockwise right side of blender with a 1 8 Allen wrench until alarm sounds at 30 2 PSIG 2 11 0 14 kg cm
27. gases The poppet will remain seated for unequal pressures up to 20 PSI 1 41kg cm Once a 20 PSI 1 41kg cm difference is sensed by the poppet the higher gas pressure will overcome the spring force and pressure as its opposite end thus creating a path for gas air or oxygen to flow into the alarm channel L1130 Rev C Overview of the 3920 Low Flow MicroBlender Operation The gas with the higher pressure will also flow directly to the blender outlet port bypassing the Balance and Proportioning Modules The gas is also directed to the bottom of the unit to the reed alarm thus creating an audible warning The oxygen concentration will be that of the gas at the higher pressure The blender in the alarm bypass mode will deliver the oxygen 100 or air 2196 until the bypass mechanism resets when Source gas pressure is restored to a differential of approximately 6 PSI 0 42 kg cm Some characteristics of the alarm bypass system on the Low Flow MicroBlender differ somewhat from those of model 3300 and other older model blenders If the Low Flow MicroBlender is set at 2196 and the oxygen source pressure is reduced sufficiently to produce a 20 PSI 1 41kg cm or greater differential the unit will not alarm because it will continue to deliver 2196 concentration according to the setting If the control is moved slightly from the 2196 setting the alarm will sound Similarly if the Low Flow MicroBlender is set to deliver
28. hnical support 714 283 8471 fax support vent us carefusion com CareFusion helpline Hours 24 hours 7 days per week 800 231 2466 or 800 328 4139 L1130 Rev C iii Table of Contents Section 1 Overview of the 3920 Low Flow MicroBlender Operation 1 Section 2 Warnings Cautions and Notes 4 Section 3 Troubleshooting s 6204 was ac de x iR ee ee Ro RR ee c 6 Section 4 Service Repair and Calibration 7 section 5 PerformanceCheck aaa 28 Section 6 CleaningandsSterilization 29 Section 7 Maintenance and Service Policy 30 Section 8 ReplacementParts 31 Section 9 ProductSpecificatlons 34 Section 10 Waranty 4 i echt ipie gr RR rt EE eee ete ey 96 Appendix MicroBlender Bypass Alarm Sleeve of Note This manual is intended as a guide for the service repair calibration of the Low Flow MicroBlender by a qualified technician iv L1130 Rev C Section 1 Overview of the 3920 Low Flow Microblender Operation The Low Flow MicroBlender mixes medical Balance Module Figure 3 grade compressed air and oxygen to provide a pressurized gas source ranging from 21 to 10096 oxygen The two gases then enter the two stage Balance Module The purpose of this module is to equalize the operating pressure of the air and oxygen gas sources before entering the Proporti
29. lubricate two 2 O rings P N 30514 04639B and install on sleeve P N 04897 7 10 Using lubricant P N 00631 lightly lubricate two 2 O rings P N 00114 and install one 1 on each bypass adjuster P N 20895 7 11 Thoroughly lubricate two 2 O rings P N 05307 with lubricant grease P N 03851 and install one 1 in each groove at end of bypass poppet P N 21984 shoulder 7 12 Set bypass seat assembly sleeve assembly bypass poppet assembly adjuster springs P N 03817A and adjuster assemblies aside for final assembly Service Repair and Calibration 8 0 Outlet Cap Disassembly Reassembly Bottom Front of MicroBlender 8 1 Using spanner wrench P N 03849 remove outlet cap and O ring from valve block Remove and discard O ring Outlet Cap Reassembly Replacement Parts Part No Qty 05186 1 Description O ring 8 2 Lightly lubricate and install O ring P N 05186 on cap P N 20877 Set aside for final assembly 9 0 Muffler Disassembly Bottom Middle of MicroBlender 9 1 With a small screwdriver carefully lift star retainer from bottom of valve block Discard star retainer 9 2 Remove muffler carefully with a pointed probe and discard Muffler Assembly Replacement Parts Part No Qty Description 03314 1 Star Retainer 03319 1 Muffler 9 3 Set muffler P N 03319 and retainer P N 03314 aside for final assembly 10 0 Alarm Disassembly Reassembly Bottom Middle of MicroBlender
30. ly for a minimum of two 2 years The need for cleaning and replacement will depend on gas line conditions and will be indicated by the blender not meeting its specification performance CareFusion recommends that complete maintenance be performed at least every two 2 years Elastomer components will not function indefinitely and the probability of their causing malfunctions increases progressively after two 2 years of service L1130 Rev C Section 8 Replacement Parts Part Number 00114D 00138D 00143D 00193D 00306D 00348D 00770D 00822 01943 03310 03312 03314D 03319 20807 03806 03914A 03808D 03809 03810 20895 21984 03817A 03819D 03825D 03826D 20877 03833 03834L 03835L 03837 03838 03854 03858A L1130 Rev C Description O ring 117 x 040 176 x 070 239 x 070 364 x 070 O ring 114 x 070 O ring 301 x 070 Ball 3 16 dia Nut 9 16 18 Hex O ring 437 x 070 Spring 21 x 16 x 25LG Poppet Check Valve Primary Ring Rtng Int 39 Muffler Bleed Blender Balance Block O ring O ring O ring Poppet Check Valve Auxiliary Block Viv MicroBlender W Plugs O ring 4681D x 078 Conn Aux Outlet 02 1 4 BPT Spring 210 x 156 x 437 Bypass Adjuster Poppet Bypass 700 Spring 148 OD x 500 Nut Front Seat Screw 10 32 x 75 Hex Soc Hd Screw 10 32 x 2 25 Hex Soc Hd Cap Balance Block Air Inlet Connec
31. ment or parts This warranty shall be void and shall not apply if the equipment is used with accessories or parts not manufactured by CareFusion or authorized for use in writing by CareFusion or if the equipment is not maintained in accordance with a prescribed schedule of maintenance The warranty stated above shall extend for a period of one year from date of delivery with the following exceptions 1 Electrical components for remote monitoring of physical variables such as temperature pressure oxygen saturation or flow are warranted for ninety 90 days from date of receipt 2 Elastomeric components and other parts or components subject to deterioration over which CareFusion has no control are warranted for sixty 60 days from date of receipt The foregoing is in lieu of any other warranty expressed or implied including without limitation any warranty of merchantability except as to title and can be amended only in writing by a duly authorized representative of CareFusion 36 L1130 Rev C Appendix MicroBlender Bypass Alarm Sleeve If the Bypass Alarm Sleeve has the Identification groove shown below part number 30514 O rings are to be installed in the indicated O ring grooves If the Bypass Alarm Sleeve does not have the Identification groove part number 04639B O rings are to be installed in the O ring grooves Identification Groove O Ring Grooves L1130 Rev C 37
32. nd Calibration 5 0 Auxiliary Outlet Disassembly Reassembly Right side Front of MicroBlender 5 1 Using an 11 16 open end wrench remove the auxiliary outlet from the valve block assembly Note Small spring is loose and may fall out of cavity 5 2 Remove poppet from auxiliary outlet then remove and discard O ring P N 00138 5 3 Remove O rings P N 03808 and 00193 from the outlet body P N 03930 and discard Clean all parts with an ultrasonic cleaner Ensure all passages are blown completely dry and poppet seats are perfectly clean before beginning reassembly Ensure orifice on Auxiliary outlet P N 03930 is not occluded Auxiliary Outlet Reassembly Figure 14 Replacement parts Part No Qty Description 00138 1 O ring 00193 1 O ring 03808 1 O ring L1130 Rev C 5 4 Lightly lubricate O rings with lubricant P N 00631 Install lubricated O rings P N s 03808 and 00193 on auxiliary outlet housing P N 03930 and O ring P N 00138 on poppet P N 03806 5 5 Insert poppet into auxiliary housing 5 6 Set assembly with spring P N 03810 aside for final assembly Proportioning Module 6 0 Control Knob Front and Rear Seat Valve Disassembly Reassembly Front of MicroBlender 6 1 With thin blade screwdriver or knife remove gray cover plate from knob assembly 6 2 Using a 9 32 nut driver loosen nut just enough to remove knob assembly from front seat valve stem 6 3 Remove and discar
33. ng the warranty period CareFusion will not be liable under this warranty unless A CareFusion is promptly notified in writing by Buyer upon discover of defects or failure to meet specifications B the defective unit or part is returned to CareFusion transportation charges prepaid by Buyer C the defective unit or part is received by CareFusion for adjustment no later than four weeks following the last day of the warranty period and D CareFusion s examination of such unit or part shall disclose to its satisfaction that such defects or failures have not been caused by misuse neglect improper installation unauthorized repair alteration or accident Any authorization of CareFusion for repair or alteration by the Buyer must be in writing to prevent voiding warranty CareFusion warranties as hereinabove set forth shall not be enlarged diminished or affected by and no obligation or liability shall arise or grow out of the rendering of technical advice or service by CareFusion or its agents in connection with Buyer s order of the products furnished hereunder Limitations of Liabilities In no event shall CareFusion be liable to Buyer for loss of profits loss of use consequential damage or damages of any kind based upon a claim for breach of warranty other than the purchase price of any defective product covered hereunder This warranty does not cover normal maintenance such as cleaning adjustment or lubrication and updating of equip
34. nly 77 As PAED S QS d 77 k A ON asun ar IZ A C Set Up Procedure for Testing Figure 27 The Low Flow MicroBlender should be tested ina system which closely duplicates the Note This assembly threads into the block conditions of use for which the blender was with a left hand thread Turn counterclockwise designed Illustrated below is a schematic to tighten Single groove on nut indicates lett diagram of the system that should be used to hand thread test the Low Flow MicroBlender COMPRESSED Oz SUPPLY AIR SUPPLY C gt ADJUSTABLE ADJUSTABLE REGULATOR 0 80 PSIG REGULATOR 0 80 PSIG 1 Of FLOWMETER Oz ANALYZER SAMPLING DEVICE Figure 28 L1130 Rev C 23 Service Repair and Calibration 1 Calibration Tools Equipment Thin Bladed Screwdriver or Knife 1 8 Allen Wrench 9 32 Nut Driver Spanner Wrench P N 03849 11 16 Open End Wrench Oxygen Regulator 2 Stage Adjustable 0 80 PSIG 0 5 60 kg cm Air Regulator 2 Stage Adjustable 0 80 PSIG 0 5 60 kg cm Oxygen Flowmeter 0 35 LPM 90 Elbow Adapter P N 2688 331 1 Crooked Neck Pole or equivalent Oxygen Analyzer analyzer should read in tenths to ensure accuracy of calibration Female Post Bracket P N 04322 Oxygen Sampling Hose P N 07572 Tapered Nipple P N 32042 1 1 8 Open End Wrench 7 8 Open End Wrench 2 Air Oxygen Setup The gas supplies must be clean and dry and have the ability to genera
35. nner wrench P N 03849 with primary outlet port facing upwards secure outlet cap P N 20877 with lightly Install primary spring P N 03310 in center lubricated O ring P N 05186 into valve of primary outlet cavity bottom block Torque to 30 in Ib Note Primary outlet spring is shorter than 18 0 Auxiliary Outlet Right side Front of auxiliary outlet spring Valve Block 18 1 Position blender assembly on its side 19 2 After verifying O rings are lubricated auxiliary outlet port facing up then install install primary outlet housing and poppet spring P N 03810 into bottom of recess in into primary outlet port on valve block and auxiliary outlet valve block port hand tighten in place Note Auxiliary outlet spring is longer than primary outlet spring 18 2 Install auxiliary outlet housing P N 03930 and poppet into auxiliary outlet port on valve block and hand tighten in place 18 3 Using an 11 16 open end wrench tighten assembly to valve block Torque to 10 ft Ib Figure 24 19 3 Using 11 16 wrench tighten assembly to valve block Torque to 10 ft Ib 20 0 Front and Rear Seat Leak Test 20 1 Connect gas supply source s 0 80 PSIG 0 5 62 kg cm pressure regulator s pressure test tube s P N 10102 leak test tube P N 10101 and sampling beaker half way filled with water to valve block as shown in Figure 25 20 2 Adjust O pressure regulator between 10 15 PSIG 0 70 1 05 kg cm Air regulator remain
36. not immerse assembled blender in liquid decontamination agents When pressurizing the blender inlets avoid excessive pressure surges as could be caused by Quick Dump valves Always use needle valves and pressurize inlets slowly Use recommended lubricants sparingly as lubricant may migrate to other areas and cause the Low Flow MicroBlender to malfunction Notes Users are advised to use pressure regulators that display regulated pressure Allow equilibration time for FIO changes before analyzing gas L1130 Rev C 5 Section 3 Clinical Troubleshooting Potential Cause Corrective Action Oxygen concentration Flow requirements are Correct flow Auxiliary outlet discrepancy between blender outside the specified LPM right outlet port flow range setting and analyzer greater range is 0 30 LPM The Primary left than 3 outlet port is 3 30 LPM Analyzer out of calibration Calibrate analyzer Blender out of calibration Recalibrate or service further as necessary see Section 4 Low flow bleed muffler Remove obstruction and obstructed causing restriction verify bleed flow is within of fixed bleed tolerance a Gas supply contaminated Check source gases with calibrated O analyzer to confirm O is 100 and AIR is 2196 Air entrained into circuit Correct by ventilator or accessory device Alarm sounding Inlet pressure differences of Correct pressure difference Alarm module not calibrated
37. oning Module The diaphragm responds to the difference in pressure and directs the movement stroke of each ball valve assembly contained within the air and oxygen chambers The movement of each ball valve adjusts the amount of gas flowing through the Balance Module equalizing the air and oxygen pressures MODULES Figure 1 BALANCE The two 50 5 PSIG 3 52 0 35 kg cm gas MODULE sources enter through the diameter indexed DISS air and oxygen inlet connectors located on the bottom rear of the blender Figure 2 Each inlet connector incorporates NC X a 30 micron particulate filter From the filter MODULE the gases travel through a duckbill check valve which prevents possible reverse gas flow from either the air or oxygen supply systems ALARM BYPASS GAS SUPPLY PROPORTIONING BLEED SECTION SECTION Figure 3 Air Oxygen Blender Diagram Proportioning Module Figure 4 From the Balance Module the gases flow into the Proportioning Module and are mixed according to the oxygen percentage selected on the external control knob This Module consists of a double ended valve positioned Figure 2 between two valve seats L1130 Rev C 1 Overview of the 3920 Low Flow MicroBlender Operation One valve seat controls the passage of air and the other valve seat controls the passage of oxygen into the Low Flow MicroBlender outlet At this point the two gases have been blended according to the oxygen percentage selected
38. placement parts 18 Right Side Outlet Assembly Part No Qty Description 19 Left Side Outlet Assembly 04899 1 Rubber Checkball 20 Front Rear Seat Leak Test 05186 1 O ring 21 Balance Block 05307 1 O ring 22 Air Inlet 23 Oxygen Inlet Assembly 11 5 Using lubricant P N 00631 lubricate O ring P N 05186 and install on cap P N 24 Alarm Cap Assembly 20877 Low Flow MicroBlender Final 11 6 Using lubricant P N 00631 lubricate Assembly O ring P N 05307 and install in groove on checkball retainer P N 04898 Caution Using lubricant P N 11 7 Inspect new rubber checkball P N 00631 lightly lubricate all threaded 04899 to ensure that it is spotless clean and components with the exception of Rear not damaged by scratches nicks or flat spots Seat P N 03927 Lubricate lightly with lubricant P N 00631 11 8 Set rubber checkball checkball retainer assembly spring P N 31227 and cap assembly aside for final assembly 13 1 Position blender resting on front surface with rear of valve block facing upwards 13 2 Install spring P N 31227 place lubricated rubber checkball P N 04899 on spring 13 0 Alarm Check Valve Assembly L1130 Rev C 17 Service Repair and Calibration nig 225 ES E CSS w d Figure 19 13 3 Using a 3 16 Allen wrench install check valve retainer P N 04898 Verify that O ring P N 05307 is lightly lubricated prior to installing retainer Torque to 30 in Ib 13 4 U
39. re 12 Replacement parts Part No Qty Description 03808 1 O ring 03895 1 Duckbill Check Valve 03897 1 Washer 06804 1 Inlet Cone Filter 3 4 Install lightly lubricated O ring P N 03808 with lubricant P N 00631 on air inlet connection P N 03895 3 5 Place inlet cone filter P N 06804 inside air inlet 3 6 Set air inlet aside with duckbill check valve P N 03895 and washer P N 03897 for final assembly to valve block 4 0 Primary Outlet Disassembly Reassembly Left Side Front of MicroBlender 4 1 With an 11 18 open end wrench remove the primary outlet from the valve block Note Small spring is loose and may fall out of cavity 4 2 Remove poppet from the outlet then remove O ring from poppet and discard 4 3 Remove O ring from the outlet body and discard Clean all parts with in an ultrasonic cleaner and rinse with clean warm water Ensure all passages are blown completely dry and that poppet seat areas are perfectly clean before beginning reassembly Primary Outlet Reassembly Figure 13 Replacement parts Part No Qty Description 00138 1 O ring 05186 1 O ring 4 4 Lightly lubricate O ring P N 05186 with lubricant P N 00631 and install on primary outlet housing P N 03838 and lubricated O ring P N 00138 on poppet P N 03312 4 5 Insert poppet into the outlet housing 4 6 Set assembly with spring P N 03310 aside for final assembly L1130 Rev C Service Repair a
40. s OFF CLOSED Note Compressed air may be utilized for seat leak test Figure 23 20 L1130 Rev C Service Repair and Calibration Compressed Compressed Air Supol Air Suppl For 21 Closed Position Adjust Adjustable egulator 0 80 PSIG ei 0 80 PSIG O For 100 O Closed Position Adjust Valve Stem Sampling Device Figure 25 20 3 Slowly turn blender valve stem P N 03928 clockwise until bubbles appear on um Caution Extreme care must be taken during this procedure Any resistane 20 4 Then turn valve stem counterclockwise to rotation is likely to be valve contact until bubbles just stop A maximum leak of 4 bubbles per minute is acceptable with rear seat Further turning of knob will force the valve into the rear seat making subsequent calibration difficult Note If bubbling continues at a rate greater than 4 bubbles per minute either the front seat or valve stem are damaged and should be replaced Note If unable to fully rotate knob to right side stop 100 O return the knob to the left side stop 2196 and remove the knob With spanner wrench P N 03849 rotate the front seat P N 03926 counterclockwise approximately one half 1 2 turn and return 20 5 Carefully install O selection knob with black pointer against left side stop 21 O and secure knob collet nut with 9 32 nut driver Turn oxygen supply source OFF t 2 closed Keke 20 6 Carefully rotate O sel
41. s contained in each assembly and might remain in poppet bypass valve housing after adjuster has been removed 7 4 Using a spanner wrench P N 03849 unscrew bypass sleeve from left rear side of valve block Remove and discard O rings 7 5 From right rear side of block unscrew bypass seat Remove and discard O ring Note If spring s are still in cavity carefully remove them 7 6 Carefully push bypass poppet valve through bypass sleeve Note Use a blunt slender probe to push poppet valve out of enclosure Use care to avoid scratching surface of cylinder in which poppet valve operates 7 7 Remove and discard O rings from poppet valve Caution Carefully inspect internal surfae of sleeve for any signs of wear and damage to the special coating Clean all parts with an ultrasonic cleaner Ensure all passages are blown completely dry before beginning reassembly See Appendix MicroBlender Bypass Alarm Sleeve L1130 Rev C Alarm Bypass Reassembly MG NN SN 3 SESS Lou Mm SN ws M PES 30514 04639B 03817A 2PL 2PL See Appendix MicroBlender Bypass Alarm Sleeve Figure 16 Replacement parts Part No Qty Description 00114 2 O ring 01943 2 O ring 30514 04639B 2 O ring 05307 2 O ring 7 8 Using lubricant P N 00631 lubricate 2 O rings P N 01943 Install one 1 O ring on bypass seat cap P N 04896 and one 1 O ring on sleeve P N 04897 7 9 Using lubricant P N 00631
42. sing spanner wrench P N 03849 install cap P N 20877 verify O ring P N 05186 is lightly lubricated Torque to 30 in Ib 14 0 Front and Rear Valve Seat Assembly Front of Valve Block 14 1 Position blender with front surface facing upwards 14 2 Install rear seat valve P N 03927 with lubricated O ring P N 07849 and inserted spring P N 05163B through front port 14 3 Using a 3 16 Allen driver and torque wrench secure rear seat in place with a torque tension of 25 in Ib 14 4 Carefully insert large shoulder of clean bypass poppet valve P N 03929 into rear seat Shorter dimpled end interfaces with ball P N 03931 Note Do not use lubricant or any other substance as a means of securing ball into valve stem The ball joint interface consisting of ball P N 03931 stem P N 03928 and poppet valve P N 03929 MUST be kept clean and free of contaminants to INSURE accurate calibration 14 5 By hand install front seat assembly P N 03926 into valve block opening Using a spanner wrench P N 03849 rotate front seat until last O ring P N 00193 is just inside valve block WARNING Do not pressurize system unless O ring P N 00193 on front valve seat threads is just inside surface of valve block If not seat can be forcefully ejected 14 6 Ensure that valve stem O ring P N 00306 is situated just inside front seat assembly P N 03926 14 7 Align the dowel pins in front plate assembly P
43. t that could damage the Low Flow MicroBlender or other pieces of equipment NOTE A specific point is made to assist the operator in its understanding e The Low Flow MicroBlender should be serviced and or calibrated by a CareFusion trained hospital dealer service technician or CareFusion The Low Flow MicroBlender is designed to operate from a 50 PSIG 3 52 kg cm2 air source and a 50 PSIG 3 52 kg cm2 oxygen source Do not occlude or obstruct the bleed port or muffler on the bottom of the MicroBlender Adjustment of oxygen concentrations should be verified by an oxygen analyzer When the Low Flow MicroBlender is not in use and the auxiliary outlet is connected close off gas supply sources as the continuous gas bleed may drain compressed gas tanks empty When reassembling the blender do not pressurize the system unless the valve seat has 3 full turns of thread engaged The seat can be forcefully ejected by gas pressure if not sufficiently engaged Do not exceed 3 full turns or the rear seat may be damaged L1130 Rev C Warnings Cautions and Notes CAUTIONS An air inlet filter water trap P N 07426 is recommended for use with the MicroBlender to minimize the possibility of contaminants such as particulate debris or condensed water entering the blender or patient gas delivery system Do not steam autoclave or otherwise subject the Low Flow MicroBlender to temperatures above 145 F 62 C Do
44. te 80 PSIG 0 5 60 kg cm for both air and oxygen inlet pressures When high pressure tanks are utilized blow potential debris from the valve quickly open and close each valve to prevent debris from entering the test equipment Connect recommended adjustable air and oxygen regulators to each gas supply securing with a 1 1 8 open end wrench Turn the oxygen and air regulator control knobs to full counterclockwise closed position Secure the air and oxygen high pressure hoses to each regulator using applicable wrenches 3 Oxygen Analyzer Setup Calibration e The accuracy of the calibration of the Low Flow MicroBlender will depend heavily upon the accuracy of the oxygen analyzer The oxygen analyzer should have a response time of 10 seconds or less The analyzer should read in tenths and ideally be of the digital type Calibrate the oxygen analyzer according to the manufacturer s procedure 4 Test Equipment Setup Secure a female post bracket P N 04322 to a 1 inch diameter pole Install the built in male post bracket on the Low Flow MicroBlender into the female post bracket on the pole Using 7 8 and 11 16 open end wrenches secure the air and oxygen high pressure hoses to the Low Flow MicroBlender inlets Attach and secure flowmeter in upright position to left side outlet Note Insure flowmeter is turned OFF Secure tapered nipple P N 32042 and hex nut P N 00822 to flowm
45. tor Conn 9 16 18 LH x 9 16 18 LH 02 Conn 7 17 27 x 9 16 18 LH 02 Nipple 02 Conn Hsng Check Valve Primary Knob Assembly Diaphragm Assembly 31 Quantity Required NN 2 a saa COEN AN a BB aa a N a BB a Na 5 N Replacement Parts Part Number 03859D 03864L 03869A 03870 03895D 03897D 03903 03926 03927 03928 03929 03931 80514 04639B 31227 04896 04897 04898 04899 051638 05186D 05279D gt 05307D 05436 06804D 07849D 31000 The D suffix is used when ordering certain Description Spring 118 OD x 450 LG Inlet 02 DISS Auxiliary Outlet Assembly Primary Outlet Assembly Duckbill Check Valve Washer Step 500 D x 171 D Alarm Foam Front Seat Low Flow Rear Valve Seat Stem Valve Low Flow Valve Low Flow Ball 1 8 Stainless Steel O ring 426 1D x 040 Spring 210 x 020 x 55 Cap Bypass Seat Bypass Sleeve Retainer Checkball Ball Check Rubber Spring 093 x 053 x 300 O ring 414 x 070 O ring 614 x 070 O ring 239 x 070 Alarm Retainer Cap Assembly Nylon Cone Filter O ring 313 x 051 Spring parts These parts come in packages of 10 Kit P N 10003 However the Quantity Required column indicates the number of parts actually Quantity Required 1 Na NO 0 aa lo 2 n NA o o NN Indicates parts are contained in Maintenance Refer to page 7 for component illustr
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