CAIRE Liberator G4 Series Technical & Service Manual Download Page 20

Page: 20 / 44

Lib
er

ors

Troubleshooting

Table of Contents

Introduction ------------------------------------------------------------------------- 19

Troubleshooting Charts -------------------------------------------------------- 20–23

Repair Procedures

RP1 General ---------------------------------------------------------------- 24

RP2

Shroud Assembly RR ------------------------------------------------- 24

RP3

Condensation Bottle Bracket RR ------------------------------------- 24

RP4

Liquid Level Meter RR ------------------------------------------------ 24

RP5

Liquid Level Meter Battery RR --------------------------------------- 24

RP6

Liquid Level Meter Calibration -------------------------------------- 25

RP7

G4 Meter Troubleshooting ------------------------------------------- 26

RP8

Manifold Capacitance Test ------------------------------------------- 27

RP9

Manifold Assembly RR ----------------------------------------------- 27

RP10

Resolder Feed-thru Wire --------------------------------------------- 28

RP11

Manifold Harness Assembly RR ------------------------------------- 28

RP12

Clean/Dry Probe & Dewar -------------------------------------------- 28

RP13

Relief Valve Test ------------------------------------------------------ 29

RP14

Relief Valve RR ------------------------------------------------------- 29

RP15

Pressure Retention Test ---------------------------------------------- 30

RP16

Plumbing Leak Test -------------------------------------------------- 30

RP17

Warming and Breathing Coil Assembly RR ------------------------ 31

RP18

Vent Valve RR -------------------------------------------------------- 31

RP19

Twist Lock QDV Lip Seal RR ---------------------------------------- 31

RP20

Twist Lock QDV RR -------------------------------------------------- 32

RP21

Push-on QDV RR ----------------------------------------------------- 32

RP22

Push-on Portable Pop-Off Assembly--------------------------------- 32

RP23

Empty Unit ------------------------------------------------------------ 33

RP24

Warm Unit ------------------------------------------------------------ 33

RP25

Flow Rate Test--------------------------------------------------------- 34

RP26

Operating Pressure Test ---------------------------------------------- 34

RP27

Flow Meter Verification ---------------------------------------------- 34

RP28

Economizer Regulator RR ------------------------------------------- 35

RP29

Economizer Regulator Test ------------------------------------------ 35

RP30

Flow Control Valve (FCV) RR -------------------------------------- 36

RP31

Dewar RR ------------------------------------------------------------- 36

RP32

Normal Evaporation Rate (NER) Test ------------------------------ 36

RP33

Calculating Liquid and Gaseous Oxygen Capacity ----------------- 38

Service Tools / Fixtures / Equipment / Supplies ---------------------------------- 37

Introduction

1. These procedures are designed to be performed only by qualified personnel with proper equipment.

2. Any failure during routine maintenance checks will refer you to this section. See troubleshooting chart for appropriate

procedure.

Liberators Technical Service Manual • PN 13350704 Rev

Summary of Contents for Liberator G4 Series

Page 1: ...Liberators G4 Technical Service Manual...

Page 2: ...ic Rim Phone 770 721 7759 Fax 770 721 7758 Europe Phone 44 0 1189 367060 Fax 44 118 9799245 For Customer or Technical Service needs product assistance ordering part numbers specifications unexpected e...

Page 3: ...ption of a condition that can result in equipment or component damage NOTE A statement containing information important enough to emphasize or repeat ITEM Item numbers used throughout this manual are...

Page 4: ...ry of Operation 11 VII Unpacking and Setup 14 VIII Operation 15 IX Maintenance 17 X Troubleshooting 19 XI Troubleshooting Charts 20 23 XII Repair Procedures 24 XIII Service Tools Equipment Supplies 38...

Page 5: ...tempera ture and regulates the flow of oxygen gas to the patient Any water that condenses on the cold coils is routed into the con densate bottle An economizer regulator is utilized to con serve LOX...

Page 6: ...bar 23 2 psi 1 6 bar 23 2 psi Primary Relief Valve Reseat Pressure 1 4 bar 20 5 psi 1 4 bar 20 5 psi 1 4 bar 20 5 psi 1 4 bar 20 5 psi 1 4 bar 20 5 psi Secondary Relief Valve Opening Pressure 2 1 bar...

Page 7: ...as Association as an oxygen concentration above 23 In an oxygen enriched atmosphere flammable items may burn vigorously and may ex plode Certain items considered non combustible in air may burn rapidl...

Page 8: ...s are very low and are not likely to cause any interference in nearby electronic equipment RF emissions CISPR 11 Class B Harmonic emissions The Liberator is suitable for use in all establishments incl...

Page 9: ...input output lines No data input output lines 1 kV line s Surge to line s Not Applicable Not Applicable IEC 61000 4 5 2 kV line s DC powered device to earth Voltage dips 5 UT 95 dip short interruptio...

Page 10: ...nce level in each frequency rangeb Interference may occur in the vicinity of equipment marked with the following symbol NOTE 1 At 80 MHz and 800 MHz the higher frequency range applies NOTE 2 These gui...

Page 11: ...2 3 P 0 01 0 12 m 0 12 m 0 23 m 0 1 0 38 m 0 38 m 0 73 m 1 1 2 m 1 2 m 2 3 m 10 3 8 m 3 8 m 7 3 m 100 12 m 12 m 23 m For transmitters rated at a maximum output power not listed above the recommended...

Page 12: ...e is substantially higher than the Liberator operating pressure oversaturated 2 Saturation pressure of the liquid oxygen in the fill source is substantially lower than the Liberator operating pressure...

Page 13: ...the bypass tee to the breathing coil the flow control valve and then the patient As the pressure in the container increases over 1 4 bar 20 psig the economizer valve opens and the cycle repeats mainta...

Page 14: ...e meter is powered by an internal battery offering battery life of 5 years or more at 30 cycles per day The meter has a low battery LOW BATT indicator which signals the need for bat tery replacement T...

Page 15: ...vel meter by depressing the operate button LEDs will light displaying the level of liquid oxygen If the unit is empty only the leftmost LED should light If it does not or if other erroneous indication...

Page 16: ...transfer line adapter to transfer line d Fully open liquid valve on fill source e Purge transfer line for a minimum of 5 seconds ensuring gas is safely piped away from operator i Connect transfer hose...

Page 17: ...tongs or tweezers 2 Wipe off the exterior of the unit with the cleaning solution us ing a lint free cloth The cloth should be damp but not drip ping Be as thorough as possible 3 Discard the cleaning c...

Page 18: ...nual NOTE See the Troubleshooting and Repair section of the cor responding technical manual on the detailed procedures for the tests mentioned below 1 Visual Inspection a Remove any LOX prior to maint...

Page 19: ...cator functionality d Presence of all required labels e Cryogenic reservoir damage dents dings f If LOX is still present in the unit inspect for heavy frost or condensation on the exterior of the unit...

Page 20: ...mbly RR 31 RP18 Vent Valve RR 31 RP19 Twist Lock QDV Lip Seal RR 31 RP20 Twist Lock QDV RR 32 RP21 Push on QDV RR 32 RP22 Push on Portable Pop Off Assembly 32 RP23 Empty Unit 33 RP24 Warm Unit 33 RP25...

Page 21: ...e QDVs are wiped clean and dry before filling b Dirty or damaged QDV poppet Replace the QDV cartridge RP20 or the entire QDV assembly RP21 5 Excessive venting from relief valves hissing sound a Satura...

Page 22: ...ionsfor Excessive venting from relief valves hissing sound f Partial or complete loss of vacuum ConducttheNERtest RP32 andreturntheunittoCAIRE Inc ifnecessary 10 Unit will not maintain acceptable syst...

Page 23: ...22 Liberators XI Troubleshooting Charts 8 Liberators Technical Service Manual PN 13350704 Rev K...

Page 24: ...e Troubleshooting Chart Start at the upper left corner The top line shows the steps of routine maintenance Unless otherwise noted by the arrows the flow through the chart is down or to the right Liber...

Page 25: ...attery WARNING Make sure the unit is empty and vent valve is open before replacing any component except shroud assembly compo nents or Lip Seals NOTE When assembling new compression fittings tighten 1...

Page 26: ...n more accurate but re quires the dewar be vent full with LOX To start either procedure calibration mode must first be entered There is no need to per form both procedures for any given calibration Pr...

Page 27: ...el 20 30 37 45 60 LED Min Max Min Max Min Max Min Max Min Max 1 17 6 20 6 22 0 24 7 22 7 27 9 24 9 31 3 34 2 38 1 2 20 6 23 5 24 7 28 9 27 9 33 1 31 3 37 6 38 1 46 3 3 23 5 26 5 28 9 33 2 33 1 38 3 37...

Page 28: ...7 Range The new full cap value is less than empty cap value When calibrating full Empty unit and recalibrate TABLE 6 Calibration Errors TABLE 7 Operation Errors LEDs Name Reason Notes Solution 2 4 6 H...

Page 29: ...e three bolts Item 31 that run through the FCV bracket Item 39 and through the manifold plate into the top of the dewar g Remove two remaining manifold mounting bolts Item 31 not visible in Figure 12...

Page 30: ...l holding signal wire against the ca pacitance probe c Unsolder feed thru wire Item A from probe Item B d Loosen feed thru nut Item C and remove harness e To replace manifold harness reverse above pro...

Page 31: ...Item 28 should open audible venting and or bubbling of leak test solution i Decrease pressure to 1 3 bar 19 psig Test relief valve with leak test solution A minimal amount of leakage bubbling is acce...

Page 32: ...o humidifier adapter Item 26 on FCV outlet Open FCV Item 24 to 6 LPM setting d Assemble oxygen regulator pneumatic hose Item C with DISS fittings and male pneumatic test adapter Item D Connect as semb...

Page 33: ...em 88 on tool f Install retaining ring Item 87 in QDV body Item15 by turning tool counter clockwise while pushing in on tool Torque retaining ring Item 87 to 225 280 N cm 20 25 in lbs RP17 Warming and...

Page 34: ...e static seal Item 67 if needed FIGURE 21 Top Fill Push on QDV Assembly WARNING Liberator must be empty and vented before starting procedure WARNING Liberator must be empty and vented before starting...

Page 35: ...g 4 Set Liberator FCV Item 24 to 6 LPM setting 5 Continue until Liberator is empty RP24 Warm Unit Figure 23 a Liberator may be allowed to sit FCV off vent closed a mini mum of 48 hours after emptying...

Page 36: ...alues within tolerances listed in Table 9 or unit fails flow rate test NOTE Flow rates will only be accurate if the reservoir is filled properly Reference the filling section of this manual for the co...

Page 37: ...ected to normal temperature and pressure 70 F 14 7 psig or 21 C and 1 01 Bar The above acceptable flow rates are intended for field testing only of flow control valves to account for variation in elev...

Page 38: ...ator Item 35 c Follow RP29 to ensure proper settings on the replacement regulator d Reverse remainder of procedure to install new properly ad justed regulator RP29 Economizer Regulator Test a Follow s...

Page 39: ...en in a full Liberator 45 reservoir 1 Empty weight of LIB 45 Reservoir 24 95 kg 55 00 lbs 2 Filled unit with properly saturated liquid oxygen 3 Full weight of LIB 45 Reservoir 74 99 kg 165 32 lbs 4 74...

Page 40: ...uper Flex Liquid Oxygen Transfer Line 6 97406630 Dual Fill Head Tee 13350704 Service Manual 10661515 Conversion Kit TF to SF 10660361 Conversion Kit SF to Dual 10660344 Conversion Kit TF to Dual 10661...

Page 41: ...40 Liberators Parts Price List XIV Contact Customer Service or visit www cairemedical com to obtain your parts list Liberators Technical Service Manual PN 13350704 Rev K...

Page 42: ...Fax 44 0 1344 429224 4 Mail or fax the completed purchase order for confirmation to CAIRE Inc 2200 Airport Industrial Dr Ste 500 Ball Ground GA 30115 USA CAIRE Medical Ltd Unit 6 Ashville Way Wokingha...

Page 43: ...ntenance performed Restocking Policy If it becomes necessary to cancel an order with CAIRE Inc af ter the shipment has been received use the following Restock Policy procedure 1 Notify the Customer Se...

Page 44: ...Wokingham Berkshire RG41 2PL United Kingdom Ph 44 0 1189 367060 Fax 44 0 0118 979 9245 Copyright CAIRE Inc 2019 CAIRE Inc reserves the right to discontinue its products or change the prices materials...

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