Home

Air-Oxygen Blender Service Manual

1. 227 051 A18W3SSV 5 WovuHdvIa 906 6v0S 532 14 MAYS 1 14 ozzvos AT8W3SSV LIINI XIV 41 o 8r0s A18W3SSV LIINI N39AXO 41 7 St OS 34O ASV3 41 780908 ATAWASSY a181anv 995608 le svos Pd AT8W3SSV 147410 SD AT8W3SSV 52018 MOSINVW 15099061 AT8W3SSV 5 WovuHdvIa AITON 7ee90s Al8W3SSV AQOS SSVdA amp 8 774908 ONM1d HLVdAAO14 ATAWASSY 20719 H1VdMO14 9061 532 14 MAYS 1v13 02 051 5 349425 133205 9zsvos 1 99IA49S MOT O 989505 dv2 131100 vt v0S YAAOD WOLLOS 61 05 omid MOTH I i c xawassv pee JOIAW3S SSVdA8 41 89 909 H1VdAO14 v7908 9890S ON 295 061 A18W3SSV SONY 1 8eevos SNINOILYOdOUd 41 13sv99v0s 2 4 AT8W3SSV ONTY A JONVISISay 600506 p E 4 AYAH Nyd 19505 e NI LYT 8905 AT8W3SSV 131100 41 9pSr0S I I l AT8A3SSV AAIVA I I ONTY 5NINIV133 9 Sr0S 3402 dOL 81406 31 OT 8 Z AJY 246404 ud2VdS 9vZVOS HVS T any SONTY O 9890S H2V3 3rIgWassv 121100 AlHW3SSV 131NI LIA 321 35 GIOSINVW 772905 4
2. Slide knob guide assembly from proportioning valve assembly shaft Slide resistance ring 17 from proportioning valve assembly 13 Remove phillips head screw 18 and washer 19 from side of proportioning valve assembly ce 14 Replace knob guide assembly and tighten the nut 15 Pull knob guide assembly to remove proportioning valve assembly from manifold block Again loosen the nut ONLY two turns holding the knob guide to the proportioning valve assembly remove knob guide from proportioning valve assembly shaft PRECISION MEDICAL Air Oxygen Blender 8 LOW FLOW Figure F 16 Remove each diaphragm housing assembly 20 from the manifold by removing the two hex socket head screws 21 on the top of each diaphragm housing with 5 32 hex key NOTE If you have received engineered composite blocks keep the four 4 Hex Socket head screws 21 and discard the aluminum blocks you have removed Figure G 17 Using 5 32 in long hex wrench unscrew and remove plug 22 from the bottom of the manifold 22 x9 22 block elc m 18 Remove rear plug 22 from the back of the in 2 0 2 manifold block Insert a long 5 32 hex key through rear plug Opening unscrew and remove the CN alarm bypass body 23 ball 24 and spring 25 1 22 SZ QUANTITY 2 NOTE For Engineered Composite Diaphragm Blocks disregard Figure H and proceed to Figure I in the Blend
3. from bottom cover 6 Remove bottom cover PRECISIONG 7 i Md i 2 i i o QUANTITY 4 MEDICAL Air Oxygen Blender HIGH FLOW Figure C 1 8 Remove dial 1 by pulling dial away from manifold block 8 9 Remove the auxiliary 10 outlets auxiliary contains Blue Muffler 38 by using a 2 in open end wrench to unscrew 10 Use Retaining Ring Pliers to unscrew and remove audio alarm assembly 11 from the bottom of the manifold block Figure D 11 Use small retaining ring pliers to remove retaining rings 12 from each side of the alarm assembly 13 Push the alarm assembly through to remove the assembly from manifold block Figure E 12 Using a 11 32 in nut driver or socket loosen the nut 14 ONLY two turns holding the knob guide 15 on the proportioning valve assembly 16 Slide knob guide assembly from proportioning valve assembly shaft Slide resistance ring 17 from proportioning valve assembly 13 Remove phillips head screw 18 and washer 19 from side of proportioning valve assembly 14 Replace knob guide assembly and tighten the nut 15 Pull knob guide assembly to remove proportioning valve assembly from manifold block Again loosen the nut ONLY two turns holding the knob guide to the proportioning valve assembly remove knob guide from proportioning valve assembly shaft PRECISION MEDICAL Air Oxygen Blender 18 HIGH FLOW Fig
4. 21 secure each diaphragm housing assembly to the manifold block Torque to 60 in Ibs 6 8 Nm k Repeat steps a i for remaining diaphragm housing assembly Installing diaphragm housing to manifold a Using two long hex socket head screws 21 secure each diaphragm housing assembly to the manifold block Torque to 30 in Ibs 3 4 Nm Figure K 6 Using retaining ring pliers install retaining ring 12 Insert alarm assembly 13 into bore of manifold block Install remaining retaining ring For Models without manifold block assembly Thread auxiliary outlet assembly 10 to manifold block Lubricate alarm bypass assembly bore on manifold block with Krytox GPL 106 in one side of alarm assembly bore Replace O ring 32 on plug 22 then install plug 22 into bottom hole of manifold block torque to 10 ft lbs 13 6 Nm 12 PRECISIONG MEDICAL Air Oxygen Blender 11 LOW FLOW Figure L 12 Thread new primary outlet assembly 87 to Manifold Block torgue to 10 ft lbs 13 6 Nm Figure M 13 Start threads of new alarm assembly 11 by hand tighten with Retaining Ring Pliers ensure not to bend reed 14 Attach bottom cover 6 using four flat head screws 2 15 Install new oxygen inlet assembly 5 torque to 10 ft lbs 13 6 Nm Oxygen inlet assembly has left handed threads 16 Install new air inlet assembly 4 torque to 10 ft lbs 13 6 Nm Figure N 17 Lubrica
5. 30 0 reduce reduce closed ON 2 0 psi to 30 to 2 07 Slowly Increase Alarm 45 0 psi until alarm closed OFF MAX shuts off Slowly Slowly Reduce Reduce 50 3 45 Slowly Increase until alarm shuts off closed 50 3 45 closed flow rate 50 3 45 closed flow rate closed flow rate flow rate Reference Letter D Reverse Gas Flow Procedure PRECISION MEDICAL Air Oxygen Blender 16 Il HIGH FLOW PM5200 Model Step 1 DISASSEMBLY Tools Required 2 Phillips Screwdriver 3 Phillips Screwdriver 1 2 in Open End Wrench 11 32 in Nut Driver 5 32 in Long Hex Key Small Retaining Ring pliers NOTE Photos shown of Diaphragm Blocks are Engineered Composite Blocks Figure A 1 2 3 Rotate dial 1 to the 60 graduation Remove the two flat head screws 2 on each side of the top cover 3 Remove top cover by pulling upwards The cover will not come off unless the dial is at the 60 graduation NG 2 QUANTITY 4 Figure B 4 6 7 Use in open end wrench to unscrew and remove the air 4 and oxygen 5 inlet assemblies and primary 9 outlet assemblies from bottom of the Blender Oxygen inlet has left hand threads I manifold outlet assembly is present unscrew the stem using a 5 32 hex key and holding the manifold outlet assembly to the bottom of the Blender Remove the four flat head screws 2
6. A The H is stamped on the back for HIGH Flow models E 1 7 EQ S 2 3 by AUN PRECISIONG MEDICAL Air Oxygen Blender 22 Step 4 TEST Equipment Required Tools Required Medical Air Supply Phillips Screwdriver Medical Oxygen Supply Torque Driver capable of 10 in lbs Calibrated Oxygen Analyzer Monitor Adjustable Wrench Calibrated Air or Oxygen flow monitor 0 to 120 lpm or greater Retaining Ring Pliers Flowmeter 0 to 120 or greater Nut Driver Calibrated Pressure Gauges 0 to 100 psi Regulators Tubing Hoses Typical Test Configuration Diagram Compressed Pressure Gauge Air Supply 0 100 psi 0 100 psi Supply Adjustable 0 6 89 bar 0 6 89 bar Adjustable 0 100 psi 0 100 psi 0 6 89 bar 0 6 89 bar Pressure Gauge Oxygen Oxygen Flowmeter 0 70 Ipm Condensation Trap Recommended Oxygen Analyzer T Fitting Calibrated Flow Monitor INSTRUCTIONS FOR TESTING A Air and Oxygen Supply Setup Both gas supplies must be clean and dry per the specifications outlined in this manual and have the ability to generate up to 100 psi 6 89 bar for both the air and oxygen inlet pressures Verify air and oxygen supply concentrations with a analyzer monitor PRECISIONE MEDICAL Air Oxygen Blender 23 B Blender Setup 1 2 3 O OQ 8 Mount the Blender into a secured mating wall or pole bracket in an upright position Secure the air and oxygen hoses to the c
7. retaining ring pliers install retaining ring 12 in one side of alarm assembly bore 8 Insert alarm assembly 13 into bore of manifold block 9 Install remaining retaining ring 10 Thread auxiliary outlet assembly 10 to manifold block torque to 10 ft Ibs 13 6 Nm PRECISION f MEDICAL Air Oxygen Blender 21 HIGH FLOW Figure L 11 Replace O ring 32 on plug 22 Install plug and tighten Figure M 12 Start threads of new alarm assembly 11 by hand tighten with Retaining Ring Pliers ensure not to bend reed 13 Attach bottom cover 6 using four flat head screws 2 14 Install new air inlet assembly 4 torque to 10 ft lbs 13 6 Nm 15 Install new oxygen inlet assembly 5 torque to 10 ft lbs 13 6 Nm Oxygen inlet assembly has left 4 ae handed threads x 2 lt 16 Thread new primary outlet assembly 37 to manifold block torque to 10 ft lbs 13 6 Nm 5 G 2 QUANTITY 4 Figure N 17 Lubricate proportioning valve bore with Krytox GPL 106 18 Align the 3 holes on the proportioning valve assembly 16 equal distance between the 2 plugs and push in Reference drawing below 19 Replace washer 19 and phillips head screw 18 20 Place new resistance ring 17 in its place on the 19 RSS proportioning valve assembly 18 LZ A Proportional valve assembly inserted with the MO S Dy H stamped on back for High Flow Model OA MZ
8. specific Fro blend The dial settings range from 21 oxygen to 100 oxygen The Path of the Gases The supply enters through the air and oxygen inlet connectors located on the bottom of the Blender Each inlet connector contains a particulate filter and duckbill check valves which prevent possible reverse gas flow Diaphragm Housing Module The two gases then enter the two stage pressure Diaphragm Housing Module In this module the pressures of both gas sources are equalized prior to entering the Proportioning Module The pressure is equalized at the lower pressure The diaphragm within the module responds to the difference in pressure and directs the movement of each check valve assembly contained within the air and oxygen chambers The movement of each ball adjusts the amount of gas flowing through the Diaphragm Housing Module equalizing the air and oxygen pressures to the lower pressure Proportioning Module From the Diaphragm Housing Module the gases flow into the Proportioning Module and are mixed according to the oxygen percentage selected on the Oxygen Concentration Dial The Proportioning Module consists of a double ended valve positioned between two valve seats One seat controls the passage of air and the other valve seat controls the passage of oxygen into the outlet At this point the two gases have been blended according to the oxygen percentage selected on the Oxygen Concentration Dial With the Oxygen Concentration Dial at the
9. 0 4 14 8 closed flowrate lpm lpm MIN MIN 30 0 85 0 closed flowrate Ipm Ipm MIN MIN 30 0 85 0 flow rate lpm lpm MIN MIN 30 0 120 0 flow rate lpm lpm MIN MIN Reference Letter D Reverse Gas Flow Procedure PRECISIONG MEDICAL Air Oxygen Blender BOT SECTION 4 TROUBLESHOOTING Test s 1 2and3 4 thru 8 9 thru 11 12 and 14 13 and 15 16 thru 19 Problem Pressure drop greater than 2 psi in two minutes Back flow leak Measured FIO values do not meet target values Measured FIO values do not meet target values Alarm not audible and gas is not exiting the alarm vent Probable Cause Leakage from manifold caused by cut or missing o ring or due to particulates Remedy Check ALL manifold connections inlets outlets plugs proportioning valve alarm poppet etc with oxygen leak detector to find source of leakage if leak is found remove appropriate parts and clean seal area and o rings and or replace appropriate o ring Aluminum Blocks ONLY Leakage from diaphragm housing caused by damaged diaphragm or particulates Check diaphragm housings with oxygen leak detector If leak is found replace with new Engineered Composite Diaphragm Blocks Aluminum Blocks ONLY Leakage from check valve diaphragm housing seal caused by cut or missing o ring or due to particulates Check check valve diaphrag
10. 1 SAFETY INFORMATION WARNINGS AND CAUTIONS AWARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury ACAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury AWARNING Disconnect the Air Oxygen Blender from all connections prior to disassembly Use Medical Air and Medical Oxygen when servicing to avoid contamination The Air Oxygen Blender should be serviced by a qualified service technician An Oxygen Analyzer Monitor must be used to verify oxygen concentrations When reassembling the Blender do not pressurize the system until the retaining screw of the Proportioning Module has been fully tightened The Proportioning Module can be forcefully ejected by gas pressure if not sufficiently tightened Always follow ANSI and CGA standards for Medical Gas Products Flowmeters and Oxygen Handling When servicing requirements of Directive 93 42 EEC concerning medical devices and all International Standards apply On CE marked devices ONLY DO NOT obstruct the alarm Oxygen Concentration Dial does not rotate 360 degrees Rotating the dial less than 21 or over 100 oxygen will damage the Blender A Service Warning This Service Manual is provided for your safety and to prevent damage to the Air Oxygen Blender It is essential to read and understand this entire manual before attempting to service th
11. Air Oxygen Blender Service Manual Model No PM5200 Series PM5300 Series shown PRECISIQ Mz BLENDER Low Flow TOW 0 3 Air Oxyg n LPM SAVE THESE INSTRUCTIONS PRECISION MEDICAL 300 Held Drive Tel 001 610 262 6090 Northampton PA 18067 USA Fax 001 610 262 6080 www precisionmedical com CONTENTS SECTION 1 SECTION 3 SECTION 5 SAFETY INFORMATION WARNINGS AND CAUTIONS EXPLANATION ABBREVIATION LOW Flow Blender Diagrams PM5300 Model HIGH Flow Blender Diagrams PM5200 Model COMPONENT DESCRIPTIONS in Blender Diagrams MANIFOLD ASSEMBLY SERIVCE AIR OXYGEN FLOW PATH INDICATION DIAGRAM MAINTENANCE PROCEDURES REPAIR AND CALIBRATION LOW FLOW PM5300 Model Step 1 DISASSEMBLY Step 2 CLEANING crann Serre Step 3 LOW FLOW ASSEMBLY Step 4 TEST Typical Test Configuration Diagram LOW Flow Operation Verification Procedure Il HIGH FLOW PM5200 Model Step 1 DISASSEMBLY Step 2 CLEANING Step 3 HIGH FLOW ASSEMBLY Step 4 TEST Typical Test Configuration Diagram HIGH Flow Operation Verification INTERNATIONAL LOW HIGH Flow Operation Verification Procedure BLENDER PARTS LIST Label information LOW FLOW Service Kit Diagram 504933 HIGH FLOW Service Kit Diagram 505952 PRECISIONG MEDICAL Air Oxygen Blender e DE 27 SECTION
12. H 520505 S3OVAd p 5 av3H 1v14 ozzv0s A1HW3SSV LIINI N39AXQ A1HW3SSV 131100 dH 90606 I AuviATHd 4H 05 AuviATHd 9 5 051 SNIU O 989v0S INOLLOS 6 061 SON TOUuLNOO Z9S70S 32 45 9 051 AITAWASSV Q IOJINVIA 131100 TVNOILdO A18W3SSV 131100 440 ASV3 dH 664041 AIHW3SSV SON 3arno 4H 00808 A18W3SSV wuviv 31aranv 998708 AT8WJ3SSV 3ATVA SNINOLLUuOdO3d 3H Laszssvos ONTY SNINIVA338 965 051 A18Wassv Wuv1v NIVW 13S0 Sr0s XISWASSV SNI J NYLSISJY 600505 u3HSVM Lid 89 0 NS NIY O 989705 M ia NN ni A18W3SSV Sn1d H1vdMO14 p 908 ASSY 5 W YYHdYIQ 5 i qaq10N 9051 gt JIA ADIAUAS 55 4 8 4H 54905 HLVdMO T3 A18NW3SSV 312018 q104INvH 509 061 532 14 v SNIW O ec Tv0s A18W3SSV SSvdA8 774908 S35Vd t SNTH O N SNIU O 9890S SNINIVI339 9 Sr0S HLVdMO 14 AISWASSV Sn1qd H1VdMO13 E2905 ASSY ONISNOH W9YYHdYIq 17269061 S3OV ld MAYS 1 14 OCZv0S 3A00 dOL 81708 5 4 25 QV3H 133205 925 061 3913S HDIH 1 N 1 UD AL PRECISION MEDICAL Precision Medical Inc 300 Held Drive Northampton PA 18067 USA Toll Free Tel 800 272 7285 Toll Free F
13. P COVER 504719 BOTTOM COVER 504830 AIR INLET ASSEMBLY 504537 S OXYGEN INLET ASSEMBLY 504605 MANIFOLD BLOCK ASSEMBLY 304940 PRIMARY OUTLET ASSEMBLY 504741 506084 EASYOFF AUXILIARY ASSEMBLY 504566 AUDIO ALARM ASSEMBLY 504536 RING RETAINING 504530 set MAIN ALARM ASSEMBLY 504938 GUIDE KNOB ASSEMBLY 504664 set 504557 set lt lt NIS NIS lt lt SISISIS lt lt 54 lt lt PROPORTIONING VALVE ASSEMBLY 505009 RESISTANCE RING 504561 PAN HEAD SCREW 504684 FLAT WASHER 506327 MOLDED DIAPHRAGM HOUSING ASSEMBLY 504526 HEX SOCKET HEAD SCREW 506745 506748 BYPASS ALARM SERVICE KIT 504122 O RING 008 SILICONE 70 DUROMETER 504686 O RING 013 SILICONE 70 DUROMETER 1013 O RING 006 BUNA N 70 DUROMETER 504997 O RING 10MM X 1 5MM VITON 75 DUROMETER 504744 OUTLET CAP 506743 FLOW PATH PLUG ASSEMBLY 506744 BYPASS ALARM BODY ASSEMBLY Incuded 506748 and 506745 Bypass Alarm Service Kit 505407 504932 SERVICE KIT 7 506742 MANIFOLD SERVICE KIT Sold Separately Y Y v 505498 505496 NIST AIR INLET ASSEMBLY 7 505497 v 505495 NIST OXYGEN INLET ASSEMBLY PRECISION MEDICAL Air Oxygen Blender SISISISIS lt lt lt lt lt 44 lt 5415444 lt 44 5 5 ENNIS NSN v LABEL INFORMATION T Low Flow High Flow Loc
14. ary outlets Optional The Manifold Repair Kit Part 506742 is not contained in the Blender Service Kit MANIFOLD ASSEMBLY SERVICE Disassembly 1 Remove Manifold Outlet Assembly from the bottom of the Blender using a 5 32 Hex Key 2 Unscrew 3 Primary Outlets from Manifold Block and discard 3 Remove the Manifold Body Outlet from the bottom of the Manifold Block a Remove and discard the 3 O rings b Remove and discard the plastic washer from the top of the Manifold Block Assembly 1 Install 3 new Primary Outlets on the Manifold Block Use small amount of Blue Loctite on threads Place 3 O rings on the Manifold Body Outlet Lubricate the hole on the Manifold Block with Krytox GPL106 Insert Manifold Body Outlet through the opening of the Manifold Block Place plastic washer on top of the Manifold Body Outlet Reinstall Manifold Assembly when installing air and oxygen inlets on the Blender using a 5 32 Hex Key O1 WP PRECISIONG MEDICAL Air Oxygen Blender P SECTION 2 TECHNICAL DESCRIPTION The Air Oxygen Blender is a medical device used to mix Medical Air and USP Oxygen into a gas source ranging from 21 100 oxygen The inlet gas connections are standard DISS or NIST for each gas The inlets are clearly marked and labeled on the bottom of the Blender The outlets are standard DISS male oxygen connections The front panel of the Blender is designed has a dial that is used to set the
15. ation 504679 C Primary Outlet Left Side on top cover 504680 REN 505302 C ie Primary Outlet CE Left Side on top cover 505494 p 504844 E Scale Bottom Front on top cover 504675 Ly 505301 a 1 505204 Scale CE i 1 Bottom Front on top cover 504672 Top Front on top cover 504673 d 504681 puro we es Auxiliary Outlet Right Side on top cover 504682 pv 505300 E qp see Auxiliary Outlet CE Right Side on top cover 505303 pom 504676 E d Bottom Bottom Cover 504677 WE NE ae 505268 pw 505269 Bottom CE 1 Bottom Cover 505426 Outlet Auxiliary Front of manifold by outlet s 505427 Outlet Primary Front of manifold by outlet s 504674 EMEN 504748 Model Caution Top Back on top cover 505143 A Bottom Back on rear slide 505144 Lo mount Bottom Back on top cover under v For customized Blenders with special labels contact Precision Medical Inc Air Oxygen Blender 01 8 S E 670S 32 45 9 HOW SONTY O 989r0S H2V3 5311811355 1311n0 975505 HOYI SNIVINOD SOIAWAS CIOSINVW 27 905 MIOSINVW 131100 ATAWASSV 131100 9 lt 08 989 08 SNISNOH G OJINVMW 131100 ua5vds 99 05 MIEGWASSV GIOSINVW TWNOILdO ONINIVLAY ATAWASSV Wauv1v NIVW 14 0 6 051 532 14
16. ax 800 353 1240 Tel 001 610 262 6090 Fax 001 610 262 6080 504827 Rev8 090811 Printed in USA
17. e A 1 Rotate dial 1 to the 60 graduation 2 Remove the two flat head screws 2 on each side of the top cover 3 3 Remove top cover by pulling upwards The cover will not come off unless the dial is at the 60 graduation how 2 QUANTITY 4 Figure B 4 Use a open end wrench to unscrew and remove the air 4 and oxygen 5 inlet assemblies from bottom of the Blender Oxygen inlet has left hand threads 5 f manifold outlet assembly is present unscrew the stem using a 5 32 hex key and holding the manifold outlet assembly to the bottom of the Blender 6 Remove the four flat head screws 2 from bottom cover 6 7 Remove bottom cover PRECISIONG MEDICAL Air Oxygen Blender 7 LOW FLOW Figure C 8 Remove dial 1 by pulling dial away from manifold block 8 9 Remove the primary 9 and auxiliary 10 outlets auxiliary contains Blue Muffler 38 by using a 1 2 in open end wrench to unscrew 10 Use Retaining Ring Pliers to unscrew and remove audio alarm assembly 11 from the bottom of the manifold block Figure D 11 Use small retaining ring pliers to remove retaining rings 12 from each side of the alarm assembly 13 Push the alarm assembly through to remove the assembly from manifold block Figure E 12 Using a 11 32 in nut driver or socket loosen the nut 14 ONLY two turns holding the knob guide 15 on the proportioning valve assembly 16
18. e Air Oxygen Blender If you have any questions regarding the installation setup operation and or maintenance of the Air Oxygen Blender contact Precision Medical Inc ACAUTION Use recommended lubricants sparingly as lubricant may migrate to other areas and cause the Blender to malfunction When pressurizing the Blender inlets avoid pressure surges greater than 100 psi 6 9 bar Be sure all connections are tight and leak free before returning to service Store Blender in a clean dry area when not in use DO NOT steam autoclave DO NOT gas sterilize with ETO Ethylene Oxide DO NOT immerse Air Oxygen Blender into any liquid DO NOT use if dirt or contaminants are present on or around the Blender or connecting devices DO NOT clean with aromatic hydrocarbons PRECISIONG MEDICAL Air Oxygen Blender 2 EXPLANATION OF ABBREVIATION F102 Fractional Concentration of Inspired Oxygen DISS Diameter Indexed Safety System NIST Non Interchangeable Screw Thread lpm Liters Per Minute psi Pounds Per Square Inch Nm Newton meter LOW Flow Blender Diagrams PM5300 Model ul PRECISIONG MEDICAL Air Oxygen Blender 3 ITEM COMPONENT DESCRIPTIONS in Blender Diagrams A Primary Outlet Port A male DISS oxygen fitting with check valve that delivers flow when engaged to any controlling device such as a flowmeter B Oxygen Inlet Fitting A female DISS o
19. er maintenance process Diaphragm blocks shall be installed in pairs and aluminum blocks shall not be mixed with engineered composite blocks Figure H 19 Remove and discard the two O rings 26 from the bottom of each of the diaphragm housings 27 20 Remove the four hex socket head screws 28 Aluminum Blocks holding diaphragm housings together 28 21 Remove and discard the diaphragm 29 22 Using Retaining Ring Pliers remove and discard check valves 30 Ensure inner O ring O o S 36 is removed from diaphragm housing 7 awarg NOTE If check valve 30 comes apart when A removing it from diaphragm housing a 1 4 QUANTITY 2 QUANTITY 2 36 in hex wrench or 3 Phillips Screwdriver s 26 f will be needed to complete removal of the aie 30 check valve from the diaphragm housing QUANTITY 2 23 Repeat steps 19 22 for the remaining diaphragm housing assembly 24 Make sure all O rings have been removed from diaphragm housings and check valves 25 Disassembly is complete 26 Manifold block and diaphragm housing may be ultrasonically cleaned PRECISIONG MEDICAL Air Oxygen Blender 9 Step 2 CLEANING Precision Medical Inc recommends using an ultrasonic cleaner for cleaning all non elastometric and non metallic components However cleaning with an all purpose liquid cleaner and rinsing with clean warm water may be substituted Both methods require thoroughly b
20. erved troubleshoot by using a commercial leak detector to find source of leak and refer to Section 4 TROUBLESHOOTING for further instructions Use a lint free dry cloth to wipe Blender clean of commercial leak detector Ensure both inlet pressures are at 50 psi Replace the top cover NOTE DO NOT install the 4 mounting screws until the end of the Final Test or after satisfactory completion of the Performance Check Refer to the OPERATING INSTRUCTIONS in Users Manual Set flowmeter to 3 3 5 lpm Set the Blender to 60 Fio with Oxygen Analyzer Monitor this value should remain within 3 0 of original reading throughout the following test a Set flowmeter to 30 30 5 lpm check concentration reading b Set flowmeter back to 3 3 5 lpm c Set air inlet pressure to 50 psi 3 45 bar and the oxygen inlet pressure to 43 psi 2 96 bar adjust flow to 3 3 5 lpm check concentration reading d Set air inlet pressure to 43 psi 2 96 bar and the oxygen inlet pressure to 50 psi 3 45 bar adjust flow to 3 3 5 lpm check concentration reading e If the Oxygen Analyzer Monitor setting does not remain within 3 096 of the original reading then replace one or both of the diaphragm block assemblies NOTE Diaphragm blocks shall be installed in pairs and Aluminum Blocks shall not be mixed with Engineered Composite Blocks PRECISIONG MEDICAL Air Oxygen Blender 14 D Reverse Gas Flow Procedure Reference Operational Veri
21. es of the diaphragm housings are on the same side Fasten the two diaphragm housings together using four hex Socket head screws 28 Torque screws to 60 in Ibs Place four new O rings 26 on the inlet holes of the diaphragm housings Remove diaphragm alignment tool Place new O rings 36 onto each check valve 30 By hand carefully insert new check valve 30 into diaphragm housing Check valves are double threaded Thread into diaphragm housing using Retaining Ring Pliers Check valve must be flush with surface of diaphragm housing DO NOT USE power tool to tighten Repeat this step for the second check valve Using two long hex socket head screws 21 secure each diaphragm housing assembly to the manifold block Torque to 60 in Ibs 6 8 Nm Repeat steps a i for remaining diaphragm housing assembly Figure J 2 Engineered Composite Diaphragm Blocks 5 Installing diaphragm housing to manifold a Using two long hex socket head screws 21 secure each diaphragm housing assembly to the manifold block Torque to 30 in Ibs 3 4 Nm Aluminum Blocks shall not be mixed with Engineered Composite Blocks m 9 QUANTITY 4 26 Da Key gt 90o Diaphragm Alignment Tool l 28 QUANTITY 4 Aluminum Blocks e 21 QUANTITY 2 30 QUANTITY 2 36 QUANTITY 2 Figure K 6 Lubricate alarm bypass assembly bore on manifold block with Krytox GPL 106 7 Using
22. fication Procedure s 2 amp 3 in Table page 16 or 27 1 Disconnect the oxygen hose from the gas source Remove all outlet connections from the Blender to ensure that there is no outlet flow 2 Place the free end of the oxygen supply hose under water Gradually increase the air supply pressure from 30 75 psi 2 07 5 17 bar check for leakage past the oxygen inlet check valve 3 Replace the Duckbill Check Valve in the oxygen inlet if bubbles indicate leakage 4 Repeat steps 1 3 to check for leakage past the air inlet check valve 5 Reconnect the air inlet hose and adjust both supply pressures back to standard inlet pressure E Setup of PROPORTIONING VALVE ASSEMBLY CALIBRATION T 2 3 4 8 9 Set air and oxygen inlet pressures to 50 psi Set flow to 9 lpm Turn Adjustment Shaft counterclockwise until the Oxygen Analyzer Monitor displays a concentration equal to that of the source air 0 3 reference Part A in Setup Attach knob guide assembly onto adjustment shaft of proportioning valve assembly so that the knob stop rests on top of the screw Ensure knob stop aligns with the slot in the resistance ring While applying downward pressure to the 2 screws on the knob guide assembly attach nut to adjustment shaft using nut driver Turn knob guide fully clockwise Oxygen Analyzer Monitor display should be equal to concentration of the source oxygen 0 3 Turn knob guide back to 2196 posi
23. full counterclockwise position 21 the double ended valve will completely close off the flow of oxygen allowing only the air to flow By adjusting the Oxygen Concentration Dial to the full clockwise position 100 the flow of air is blocked permitting only the flow of oxygen through the Blender outlet Alarm and Alarm Bypass An audible alarm located on the bottom of the Blender that signals when the difference in pressure between the two inlet gasses exceeds 20 psi When the two source gases are near equal in pressure the alarm bypass poppetis positioned over the bypass channel blocking the flow of both gases The poppet will remain seated for unequal pressures up to 20 psi 1 41 kg cm Once a 20 psi 1 41 kg cm difference is sensed by the poppet the higher gas pressure will overcome the spring force and pressure will overcome the spring force and pressure at its opposite end thus creating a path for gas air or oxygen to flow into the alarm channel The gas with the higher pressure will also flow directly to the Blender outlet port by passing the Balance and Proportioning Modules The gas is also directed to the bottom of the unit to the reed alarm thus creating and 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 21 until the bypass mechanism resets when the source gas pressure is restored to a differential of approxima
24. ing Ring Pliers 2 NOTE For use with Aluminum Diaphragm Blocks ONLY Figure l 1 Position manifold block so that the mounting bracket opem O is facing up The large holes opposite the mounting i es locations of the diaphragm housing assemblies are facing you Cover the alarm assembly thread location with thumb Drop spring 25 then ball 24 into alarm bypass orifice Place alarm bypass body 23 onto long shaft of 5 32 E hex key Guide the alarm bypass threads first into the 55 0 alarm bypass orifice screw into cavity Tighten until O alarm bypass is flush with bottom of center hole Tighten enough to clear center threads ONLY 4 Replace O ring 32 on plug 22 Insert plug and Q tighten ln N PRECISIONG MEDICAL Blender 20 HIGH FLOW NOTE See Figure J 1 for Aluminum Diaphragm Blocks and Figure J 2 for Engineered Composite Diaphragm Blocks Diaphragm blocks shall be installed in pairs and Figure J 1 Aluminum Diaphragm Blocks shown 5 Assembling diaphragm housing assemblies a b C k Ensure all O rings have been removed from diaphragm housing Place diaphragm alignment tool through center hole of one diaphragm housing Place new diaphragm 29 on top of diaphragm housing ensure center pin of diaphragm is in the center of tool Place other diaphragm housing on top of the one with the diaphragm Ensure the inlet hol
25. l Check Valve in the oxygen inlet if bubbles indicate leakage 4 Repeat steps 1 3 to check for leakage past the air inlet check valve 5 Reconnect the air inlet hose and adjust both supply pressures back to standard inlet pressure E Setup of PROPORTIONING VALVE ASSEMBLY T 2 3 4 8 9 Set air and oxygen inlet pressures to 50 psi 3 45 bar Set flow to 15 Ipm Turn Adjustment Shaft counterclockwise until the Oxygen Analyzer Monitor displays a concentration equal to that of the source air 0 3 reference Part A in Setup Attach knob guide assembly onto adjustment shaft of proportioning valve assembly so that the knob stop rests on top of the screw Ensure knob stop aligns with the slot in the resistance ring While applying downward pressure to the 2 screws on the knob guide assembly attach nut to adjustment shaft using nut driver Turn knob guide fully clockwise Oxygen Analyzer Monitor display should be equal to concentration of the source oxygen 0 3 Turn knob guide back to 2196 position to ensure no drift from original reading 20 3 Re attach knob guide torque nut to adjustment shaft and tighten to 10 in Ibs using a torque driver Snap in knob back into knob guide pay close attention to the key location of the knob 10 Set knob to 60 graduation 11 Replace the top cover NOTE DO NOT install the four 4 mounting screws until the end of the Final Test F Final Test Comple
26. larm OFF 45 0 psi MAX closed flow rate flow rate 120 0 Ipm MIN 85 0 Ipm MIN closed flow rate 85 0 Ipm MIN Reference Letter D Reverse Gas Flow Procedure flow rate 120 0 Ipm MIN PRECISIONG MEDICAL Air Oxygen Blender 26 II INTERNATIONAL LOW HIGH Flow Operation Verification Procedure 60 psi 4 14 bar MODELS Serial No OXYGEN FLOWMETER PRESS SET TO BLEED VALUE DIAL SET 1 0 Ipm 50 2 F HGPI N y ACTUAL Oxygen VALUE AUXILIARY TARGET psi bar Flow Flow FLow FLOW closed closed leak lt 2 psi 2 MIN closed back flow 100 ml min closed back flow 100 ml min 0 3 Source Value open end point open closed set point 37 0 43 0 open closed set point 57 0 63 0 open closed set point 77 0 83 0 0 3 Source Value 60 4 14 set point 57 0 63 0 70 4 83 open set point 57 0 63 0 53 3 65 i open set point 57 0 63 0 Slowly Slowly Alarm 42 0 31 0 Lower Lower closed ON 2 0 6 0 to 40 to 2 76 psi psi open closed end point Slowly Slowly i 60 4 14 Increase Increase GEE aK 060 04 14 Slowly Slowly Alarm 42 0 31 0 Lower Lower 60 4 14 ON 2 0 6 0 to 40 to 2 76 psi psi Slowly Slowly f Alarm 55 0 psi Increase Increase closed OFF MAX to60 104 14 30 0 120 0 6
27. low drying all passages before reassembly Follow the ultrasonic cleaner manufacturer instruction Step 3 LOW FLOW ASSEMBLY Tools Required Tools Supplied with Kit Lint Free Swab optional Diaphragm Alignment Tool Pointed instrument for removing O rings P N 504838 Krytox GPL 106 or equivalent Oxygen safe lubricant N 2 Phillips Screwdriver S pen Open Ed Torgus NOTE For use with Aluminum Torque wrench s capable of 60 in Ibs and 10 ft lbs po 11 32 in Nut Driver Diaphragm Blocks ONLY 5 32 in Long Hex Key Small Retaining Ring Pliers Figure I 1 Position manifold block so that the mounting bracket is facing up The large holes opposite the mounting locations of the diaphragm housing assemblies are facing you 2 Cover the alarm assembly thread location with thumb Drop spring 25 then ball 24 into alarm bypass orifice 3 Place alarm bypass body 23 onto long shaft of 5 32 hex key Guide the alarm bypass body threads first into the alarm bypass orifice screw into cavity Tighten until alarm bypass body is flush with bottom of center hole Tighten enough to clear center threads ONLY 4 Replace O ring 32 on plug 22 Insert plug and tighten PRECISIONG MEDICAL Air Oxygen Blender 10 LOW FLOW NOTE See Figure J 1 for Aluminum Diaphragm Blocks and Figure J 2 for Engineered Composite Diaphragm Blocks Diaphragm blocks shall be installed in pairs and Aluminum Blocks shall
28. m housing seal with oxygen leak detector If leak is found replace with new Engineered Composite Diaphragm Blocks Ball not sealing in the alarm bypass Replace spring and ball in alarm bypass ensure seal surface is clean Auxiliary bleed is open Close auxiliary bleed by turning and pulling knurled collar away from cover until bleed is closed Leakage from one of the outlets Faulty inlet Outlet flow is less than 3 Ipm Replace outlet Replace duckbill valve or entire inlet assembly Adjust flowmeter to 3 Ipm Note flow must be adjusted after each change in FIO setting Proportioning valve endpoints are not set correctly Set proportioning valve endpoints See setup procedure in Section E Diaphragm blocks not balancing properly Replace with new Engineered Composite Diaphragm Blocks Internal leakage in proportion valve Bleed not open Remove proportioning valve clean seal areas and or replace the two rear o rings If necessary replace proportioning valve assembly Open bleed by turning and pushing the knurled collar until it contacts the cover Blockage in bleed holes Internal leak in proportioning valve Replace auxiliary outlet Remove proportioning valve clean seal areas and or replace the two rear o rings If necessary replace proportioning valve assembly Flow not set to 1 Ipm Adjust flow to 1 Ipm Diaphragm blocks not balancing properly P
29. mance Check Refer to the OPERATING INSTRUCTIONS in Users Manual Set flowmeter to 3 3 5 lpm Set the Blender to 60 Fio with Oxygen Analyzer Monitor this value should remain within 3 0 of original reading throughout the following test a Set flowmeter to 30 30 5 lpm check concentration reading b Set flowmeter back to 3 3 5 lpm c Set air inlet pressure to 50 psi 3 45 bar and the oxygen inlet pressure to 43 psi 2 96 bar adjust flow to 3 3 5 lom check concentration reading d Set air inlet pressure to 43 psi 2 96 bar and the oxygen inlet pressure to 50 psi 3 45 bar adjust flow to 3 3 5 lpm check concentration reading e If the Oxygen Analyzer Monitor setting does not remain within 3 0 of the original reading then replace one or both of the diaphragm block assemblies NOTE Diaphragm blocks shall be installed in pairs and Aluminum Blocks shall not be mixed with Engineered Composite Blocks PRECISIONG MEDICAL Air Oxygen Blender 24 D Reverse Gas Flow Procedure Reference Operational Verification Procedure s 2 amp 3 in Table page 26 or 27 1 Disconnect the oxygen hose from the gas source Remove all outlet connections from the Blender to ensure that there is no outlet flow 2 Place the free end of the oxygen supply hose under water Gradually increase the air supply pressure from 30 75 psi 2 07 5 17 bar check for leakage past the oxygen inlet check valve 3 Replace the Duckbil
30. move and discard check valves 30 Ensure inner O ring 36 is removed from diaphragm housing NOTE If check valve 30 comes apart when removing it from diaphragm housing a 1 4 in hex wrench or 3 Phillips Screwdriver will be needed to complete removal of the check valve from the diaphragm housing Repeat steps 19 22 for the remaining diaphragm housing assembly Make sure all O rings have been removed from diaphragm housings and check valves Disassembly is complete Manifold block may be ultrasonically cleaned Aluminum Blocks QUANTITY 4 28 QUANTITY 2 QUANTITY 2 36 QUANTITY 4 30 QUANTITY 2 PRECISIONG MEDICAL Air Oxygen Blender ce Step 2 CLEANING Precision Medical Inc Recommends using an ultrasonic cleaner for cleaning all non elastometric components However cleaning with an all purpose liquid cleaner and rinsing with clean warm water may be substituted Both methods require thoroughly blow drying all passages before reassembly Follow the manufacturer s instruction for ultrasonic cleaning Step 3 HIGH FLOW ASSEMBLY Tools Required Tools Supplied Lint Free Swab optional Diaphragm Alignment Tool Pointed instrument for removing O rings P N 504838 Krytox GPL 106 or equivalent Oxygen safe lubricant N 2 Phillips Screwdriver S 1 2 in Open End Torque Wrench Torque wrench s capable of 60 in Ibs and 10 ft Ibs 11 32 in Nut Driver 5 32 in Long Hex Key Small Retain
31. not be mixed with Engineered Composite Blocks Figure J 1 Aluminum Diaphragm Blocks shown 5 Figure J 2 Engineered Composite Diaphragm Blocks 5 Assembling diaphragm housing assemblies l a Ensure all O rings have been removed from diaphragm housing ij b Place diaphragm alignment tool through center hole of one lt diaphragm housing RY o c Place new diaphragm 29 on top of diaphragm housing ensure Oe center pin of diaphragm is in the center of diaphragm alignment tool P N 504838 d Place other diaphragm housing on top of the one with the diaphragm Ensure the inlet holes of the diaphragm housings SUT are on the same side 26 e Fasten the two diaphragm housings together using four hex socket eect Diaphragm head screws 28 Torque screws to 60 165 3 Alignment f Place four new O rings 26 on the inlet holes of the diaphragm housings l 28 g Remove diaphragm alignment tool QUANTITY 4 h Place new O rings 36 onto each check valve 30 Aluminum Blocks i By hand carefully insert new check valve 30 into diaphragm I housing Check valves are double threaded Thread check valves T ANTI into diaphragm housing using Retaining Ring Pliers Check valve must be flush with surface of diaphragm housing DO NOT USE 30 QUANTITY 2 d QUANTITY 2 power tool to tighten Repeat this step for the second check valve j Using two long hex socket head screws
32. nual and have the ability to generate up to 100 psi 6 89 bar for both the air and oxygen inlet pressures Verify air and oxygen supply concentrations with a analyzer monitor PRECISIONG MEDICAL Air Oxygen Blender 19 B Blender Setup 1 2 3 O O 8 Mount the Blender into a secured mating wall or pole bracket in an upright position Secure the air and oxygen hoses to the corresponding Blender inlets It is recommended that a condensation trap be installed in the air supply line just before the Blender air inlet Attach a flowmeter capable of 0 70 Ipm to the auxiliary outlet on the Blender Attach a t fitting to the outlet of the flowmeter Attach an Oxygen Analyzer Monitor to the one outlet on the t fitting Attach a calibrated Air or Oxygen Flow Monitor capable of 0 70 lpm or greater to the other outlet on the t fitting The system is now ready for an initial performance test C Initial Performance Test NOTE Before pressurizing make sure proportioning valve assembly is secure and m D screw is tightened Perform calibration on Oxygen Analyzer Monitor per the manufacture s instructions prior to testing the Blender Set Air amp Oxygen pressures to 50 psi 3 45 bar each NOTE Turn OFF and check for leak by watching for pressure drops on pressure gauges An initial pressure drop may occur no further drop in pressure should occur If continued pressure drop is obs
33. orresponding Blender inlets It is recommended that a condensation trap be installed in the air supply line just before the Blender air inlet Attach a flowmeter capable of 0 120 lpm to the auxiliary outlet on the Blender Attach a t fitting to the outlet of the flowmeter Attach an Oxygen Analyzer Monitor to the one outlet on the t fitting Attach a calibrated Air or Oxygen Flow Monitor capable of 0 120 Ipm or greater to the other outlet on the t fitting The system is now ready for an initial performance test C Initial Performance Test NOTE Before pressurizing make sure proportioning valve assembly is secure and D oo screw is tightened Perform calibration on Oxygen Analyzer Monitor per the manufacture s instructions prior to testing the Blender Set Air amp Oxygen pressures to 50 psi 3 45 bar each NOTE Turn OFF and check for leak by watching for pressure drops on pressure gauges An initial pressure drop may occur no further drop in pressure should occur If continued pressure drop is observed troubleshoot by using a commercial leak detector to find source of leak and refer to Section 4 TROUBLESHOOTING for further instructions Use a lint free dry cloth to wipe Blender clean of commercial leak detector Ensure both inlet pressures are at 50 psi Replace the top cover NOTE DO NOT install the 4 mounting screws until the end of the Final Test or after satisfactory completion of the Perfor
34. r NIST oxygen fitting with one way valve that is used to connect an oxygen supply hose C Air Inlet Fitting A male DISS or NIST air fitting with one way valve that is used to connect an air supply hose D Oxygen Concentration Dial A dial used for selecting oxygen concentrations between 2196 10096 The Froe scale is used for reference only This Dial does not rotate 360 The dial starts at 2196 and ends at 100 E Rear Slide Mount with dove tail F Auxiliary Bleed Collar The collar is used to engage and disengage the bleed The bleed is necessary to maintain accurate Fro Concentration below 15 lpm for the High Flow and Ipm for the Low Flow To activate the bleed slide and rotate if applicable the knurled collar back until it contacts the cover To deactivate the bleed pull and rotate if applicable collar away from cover until it reaches a positive stop G Auxiliary Outlet Port A male DISS oxygen fitting with check valve that delivers flow when engaged to any controlling device such as a flowmeter This outlet is equipped with a bleed valve that allows the user to control if the bleed is ON or OFF With the bleed in the ON position this outlet delivers accurate oxygen concentrations in the following flows Model Flow Range High Flow 2 100 Ipm Low Flow 0 30 Ipm H Alarm An audible alarm that sounds due to an excessive pressure drop or deletion of either gas supply Manifold Outlet with 3 prim
35. ressure differential not sufficient to trigger alarm Replace diaphragm block Ensure supply pressures are set properly to achieve differential Low Flow 18to 22 High Flow 13 to 25 Alarm not audible and gas is exiting the alarm vent Faulty alarm Replace alarm See Figure C amp M Alarm does not turn off after balancing supply pressures Measured flow values do not meet minimum target values Faulty alarm assembly Replace alarm assembly See Figure D amp K Ball not sealing in the alarm bypass Gas inlets are restricted Replace spring and ball in alarm bypass ensure seal surface is clean Check appropriate gas inlet s for restriction in gas pathway replace duckbill or entire inlet as necessary High flow model only low flow inlets installed in place of high flow inlets Confirm that high flow inlets are installed replace as necessary Alarm bypass is threaded too far into manifold block only applicable to tests 17 and 16 Replace ball and spring see Figure for proper assembly method High flow models only wrong ball in alarm bypass block only applicable to tests 17 and 18 PRECISION Confirm that correct ball is installed in alarm bypass replace as necessary MEDICAL Air Oxygen Blender SECTION 5 BLENDER PARTS LIST LOW FLOW HIGH FLOW PART DESCRIPTION 5300 5200 504562 CONTROL KNOB Dial 504720 FLAT HEAD SCREW 504718 TO
36. te Operation Verification Procedure as per the test table page 26 or 27 Record test results in the test table When Final Test is complete replace top cover and install the four 4 mounting screws into cover NOTE Operation Verification Procedure should be performed at least once a year PRECISIONG MEDICAL Air Oxygen Blender 25 DIAL SET Oxygen OXYGEN PRESS 1 0 USA and CANADA ONLY HIGH Flow Operation Verification Procedure 50 psi 3 45 bar MODELS 50 FLOWMETER SET TO Ipm 0 2 AUXILIARY BLEED closed Serial No FUNCTION leak ACTUAL VALUE TARGET VALUE lt 2 psi 2 MIN 0 0 closed back flow lt 100 ml min 75 5 17 closed back flow lt 100 ml min 50 3 45 closed end point 0 3 Source Value 50 3 45 closed set point 37 0 43 0 50 3 45 closed set point 57 0 63 0 50 3 45 closed set point 77 0 83 0 50 3 45 closed end point 0 3 Source Value 50 3 45 open set point 57 0 63 0 67 4 62 open set point 57 0 63 0 50 3 45 open set point 57 0 63 0 Slowly reduce to 31 Slowly reduce to 2 14 closed Alarm ON 31 0 6 0 psi 3 45 Slowly Increase until alarm shuts off Alarm OFF 45 0 psi MAX Slowly Reduce to 2 14 Slowly Reduce to 31 Slowly Increase until alarm shuts off 50 3 45 closed closed A
37. te proportioning valve bore with Krytox GPL 106 18 Align the 3 holes on the proportioning valve assembly 16 equal distance between the 2 plugs and push in Reference drawing below 19 Replace washer 19 and phillips head screw 18 20 Place new resistance ring 17 in its place on the proportioning valve assembly Proportional valve assembly inserted with 17 the L stamped on back for Low Flow Model E BN 1 L is stamped on the back for LOW Flow models PRECISION MEDICAL Air Oxygen Blender 12 Step 4 TEST Equipment Required Tools Required Medical Air Supply Phillips Screwdriver Medical Oxygen Supply Torque Driver capable of 10 in lbs Calibrated Oxygen Analyzer Monitor Adjustable Wrench Calibrated Air or Oxygen flow monitor 0 to 70 or greater Retaining Ring Pliers Flowmeter 0 to 70 lpm or greater Nut Driver Calibrated Pressure Gauges 0 to 100 psi Regulators Tubing Hoses Typical Test Configuration Diagram Compressed Pressure Gauge Air Supply 0 100 psi Adjustable 0 6 89 bar 0 6 89 bar Adjustable 0 100 psi 0 100 psi 0 6 89 bar 0 6 89 bar Pressure Gauge Oxygen 0 100 psi Supply Oxygen Flowmeter 0 70 Ipm Condensation Trap Recommended Oxygen Analyzer T Fitting Calibrated Flow Monitor INSTRUCTIONS FOR TESTING A Air and Oxygen Supply Setup Both gas supplies must be clean and dry per the specifications outlined in this ma
38. tely 6 psi 0 42 kg cm If the Blender is set at 2196 and the OXYGEN source pressure is reduced sufficiently to produce a 20 psi 1 41 kg 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 Blender is set to deliver 10096 oxygen 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 alarm will not function when there is no flow to the Blender PRECISION MEDICAL Air Oxygen Blender 5 Gas Outlets The Primary and Auxiliary Outlets are DISS male adapters with check valves AIR OXYGEN FLOW PATH INDICATION DIAGRAM DIAPHRAGM DIAPHRAGM CHECK VALVE ALARM BYPASS VALVE PROPORTIONING BYPASS CHECK VALVE VALVE ORIFICE DUCK BILL CHECK VALVE FILTER O 2 DISS shown AUDIBLE ALARM AIR DISS shown PRECISIONG MEDICAL Air Oxygen Blender 6 SECTION 3 MAINTENANCE PROCEDURES REPAIR AND CALIBRATION LOW FLOW PM5300 Model Step 1 DISASSEMBLY Tools Required 2 Phillips Screwdriver 11 32 in Nut Driver 3 Phillips Screwdriver 5 32 in Long Hex Key 1 2 in Open End Wrench Small Retaining Ring Pliers NOTE Photos shown of Diaphragm Blocks are Engineered Composite Blocks a S Figur
39. tion to ensure no drift from original reading 20 3 Re attach knob guide torque nut to adjustment shaft and tighten to 10 in Ibs using a torque driver Snap in knob back into knob guide pay close attention to the key location of the knob 10 Set knob to 60 graduation 11 Replace the top cover NOTE DO NOT install the four 4 mounting screws until the end of the Final Test F Final Test Complete Operation Verification Procedure as per the test table page 16 or 27 Record test results in the test table When Final Test is complete replace top cover and install the four 4 mounting screws into cover NOTE Operation Verification Procedure should be performed at least once a year PRECISIONG MEDICAL Air Oxygen Blender 15 USA and CANADA ONLY LOW Flow Operation Verification Procedure 50 psi 3 45 bar MODELS Serial No OXYGEN PRESS SET 1 0 FLOWMETER AUXILIARY TARGET ACTUAL SETTO BLEED VALUE VALUE Oxygen Ipm 0 2 leak lt 2psi 2 MIN back flow 100 ml min back flow 100 ml min 0 3 50 3 45 open end point source Value 50 3 45 3 open set point 37 0 43 0 50 3 45 3 open set point 57 0 63 0 50 3 45 3 open set point 77 0 83 0 0 3 Source Value 50 3 45 open point 50 3 45 open set point 57 096 63 096 67 4 62 open set point 57 096 63 096 50 3 45 open set point 57 096 63 096 Slowly Slowly Alarm
40. ure F 16 Remove each diaphragm housing assembly 20 from the manifold by removing the two hex socket head screws 21 on the top of each diaphragm housing with 5 32 hex key NOTE If you have received engineered composite blocks keep the four 4 Hex Socket head screws 21 and discard the aluminum blocks you have removed 21 E 4 Figure G 17 18 Using 5 32 in long hex wrench unscrew and remove plug 22 from the side of the manifold block For High Flow models with a manifold outlet assembly remove plug from left side of manifold block instead of from the bottom of the manifold block Remove rear plug 22 from the back of the manifold block Insert a long 5 32 hex key through rear plug opening unscrew and remove the alarm bypass body 23 ball 24 and spring 25 23 NL KW y 24 22 amp 3 122 QUANTITY 2 NOTE For Engineered Composite Diaphragm Blocks disregard Figure H and proceed to Figure I in the Blender maintenance process Diaphragm blocks shall be installed in pairs and aluminum blocks shall not be mixed with engineered composite blocks Figure H 19 20 21 22 23 24 25 26 Remove and discard the two O rings 26 from the bottom of each of the diaphragm housings 27 Remove the four hex socket head screws 28 holding diaphragm housings together Remove and discard the diaphragm 29 Using Retaining Ring Pliers re

Air-Oxygen Blender Service Manual

Contents

Download Pdf Manuals

Related Search

Related Contents