SLE SLE2000 HFO Service Manual Download Page 82

Page: 82 / 84

SLE2000 HFO Service Manual
Doc No. SM/0001: Issue 7.0

Page 82 of 84

High Alarm:

Low Inspiratory pressure

1) Low Air/O2 supply
pressures.

2) High alarm threshold set
too low.

3) Fault in patient circuit

4) Exhalation block not
properly located

5) Blocked inspiratory
nozzle

6) Faulty Inspiratory
regulator

Ensure Air/O2 supply = 4
BAR

Adjust High alarm
threshold.

Replace patient circuit

Relocate exhalation block

Refer to qualified service
engineer

Low CPAP
Desired CPAP pressure
cannot be achieved.

Excessive residual PEEP

1) Faulty CPAP regulator

2) Blocked CPAP nozzle

3) Exhalation block not
properly located.

Faulty patient circuit

Refer to qualified service
engineer.

Re locate block.

Replace patient circuit.

Summary of Contents for SLE2000 HFO

Page 1: ...7 0 Specialised Laboratory Equipment Ltd Twin Bridges Business Park 232 Selsdon Road South Croydon Surrey UK CR2 6PL Copyright 1997 All rights reserved No part of this manual may be reproduced without the written permission of SLE Ltd Printed in U K ...

Page 2: ...me as a holder of the SLE2000 HFO Service Manual Doc No SM0001 Issue 6 0 Name _______________________________________________ Department _______________________________________________ Hospital _______________________________________________ Address _______________________________________________ _______________________________________________ _______________________________________________ ______...

Page 3: ...TAILS 26 5 1 A0700 02 26 5 2 A0701 02 29 5 3 A0702 02 32 5 4 A0736 01 36 5 5 A0737 01 40 5 6 A0738 01 43 5 7 A0738 02 46 5 8 A0739 01 49 5 9 SERIAL INTERFACE OPTION 52 5 10 WIRELOOM 54 5 11 FRONT PANEL 55 5 12 POWER SUPPLY WIRING DIAGRAM 56 5 13 ELECTRONIC PNEUMATIC MODULE INTERCONNECTION 57 5 14 ELECTRONIC CHASSIS 58 5 15 PNEUMATIC CHASSIS PARTS LIST 62 6 SET UP AND CALIBRATION 64 6 1 RECOMMENDED...

Page 4: ...AK ALARMS 74 7 12 PRESSURE CONTROLS 75 8 MAINTENANCE SCHEDULE 76 8 1 MONTHLY OPERATIONAL CHECKS 76 8 2 SERVICE PROGRAMME 77 9 CLEANING AND STERILISATION 78 9 1 BACTERIAL FILTERS 79 9 2 EXHALATION BLOCK 79 10 SLE2000 HFO ELECTRICAL TROUBLESHOOTING CHART 80 11 SLE2000 HFO PNEUMATIC TROUBLESHOOTING CHART 81 12 INDEX 83 ...

Page 5: ...y action in the patient circuit with an active expiratory flow of gas The oscillatory flow of gas is supplied from a separate rotating jet therefore it is possible to add the oscillations to the inspiration or expiration pressures It is also possible to add oscillations to the inspiratory plateau when operating the ventilator in any of the Patient triggered modes of operation As in the SLE2000 eve...

Page 6: ...ential Pressure Range 0 90cmH2O peak to peak Mean Airway Range 0 35cmH2O 2 2 DISPLAYS 240 128 pixel backlit LCD display Selectable pressure range 5 to 60 cmH2O or 60 to 60 cmH2O Selectable timebase frame 6 4 3 2 1 0 5 seconds showing pressure waveform LOW CYCLE FAIL HIGH alarm settings and HFO rate Freeze facility 40 Segment bargraph display showing pressure waveform LOW CYCLE FAIL HIGH alarm sett...

Page 7: ...ivity Control Range 2ml 0 5 sec max To 10ml 0 5sec min when using SLE N2188 patient circuit HIGH CYCLE FAIL LOW pressure alarm setting controls Resolution 1cmH2O on LCD 2cmH2O on bargraph Display Timebase selector switch 6 4 3 2 1 0 5 seconds frame Inspiratory Pressure and CPAP pressure controls HFO Mode Switch OFF EXP INSP and CONT RATE Control 3 to 20Hz HFO Pressure Control 0cmH2O to 45cmH2O CPA...

Page 8: ...nform to IEC 601 1 and 601 2 BS 5724 Parts 1 and 2 Patient Circuit Required Model N2188 Single use Model N2200 Re usable 3 MODULE DESCRIPTIONS 3 1 ELECTRONIC MODULE Position of the boards within the electronic module 1 HFO Main Board Assembly A0736 01 2 Ventilator CPU Board Assembly A0702 02 3 Motor Drive Board Assembly A0739 01 4 Alarm Board Assembly A0738 Not visible from photo mounted on back p...

Page 9: ... parameters Mode Reset Mute and Pressure display Mode are scanned by U12 Confirmation of correct solenoid valve energisation voltages is fed to U14 14 by potential divider R34 R32 and clamp D3 Supply voltage supervisor U7 will attempt to reset the processor U14 9 should the logic supply voltage 5 12V dc fall below 4 8V dc It also holds the processor reset for a 2 second test period on power up Tri...

Page 10: ...ls sets a bistable and the other resets it U25A and B The output from the bistable is monitored by an LM2917 tachometer IC U26 Should the pulse train stop then T4 is switched off and the HFO solenoid SV4 is de energised thus cutting off the gas supply to the rotating jet assembly In addition during normal HFO operating conditions T4 is periodically switched off by T3 in response to an HFO modulati...

Page 11: ...argraph module low fail to cycle and high alarm pressure thresholds as well as the instantaneous pressure signal derived from the A0702 02 buffered transducer output These four input voltages are first buffered and conditioned before being time multiplexed via the 4066 analogue switch U31 Oscillator U19 drives a counter U18 which is used to sequentially enable U31A B C and D The multiplexed signal...

Page 12: ...1 6 2 O2 Signal Processing The pneumatic module contains a Galvanic fuel cell which monitors the oxygen concentration delivered by the blender The voltage output from this cell is input to U4 LT1006 and associated components which condition the cell output voltage to the range 0 4 5V This voltage is then presented to the ADC U18 4 on the A0702 02 PCB and is used to display the FIO2 The alarm board...

Page 13: ...t It is driven by a 12V d c supply 3 1 7 3 Miscellaneous Also located on this PCB are the fresh gas solenoid MOS driver MOS1 and associated components and a back E M F diode for solenoid SV3 3 1 8 POWER SUPPLY UNIT The power supply unit is a universal AC input switcher type It has an overall power rating of 80W and is capable of operating down to zero load It has overvoltage protection on the 5V l...

Page 14: ...e type with CCFL Cold Cathode Flourescent backlighting provided by a tube mounted on the lower edge of the module The cold cathode tube is powered by an inverter mounted on the A0739 01 board The inverter provides an ac voltage of 900V rms The digital interface to the LCD module consists of a 20 way ribbon cable comprising both data and control lines Also the negative voltage for the LCD drive is ...

Page 15: ... No SM 0001 Issue 7 0 Page 15 of 84 3 2 PNEUMATIC MODULE For access to the pneumatic unit see section 4 2 on page 19 Schematic representation of the SLE 2000 HFO pneumatics For the physical layout of the pneumatic module see page 21 ...

Page 16: ...ays constant and unaffected by changes in CPAP REG3 is an internal regulator which regulates the blended gas to a working pressure of 10 psi NV2 sets a 7LPM bleed to atmosphere This is to ensure that the oxygen blender has a constant flow through it at all times to maintain its accuracy This bleed is fed to the oxygen monitoring cell whose output is connected to the digital FIO2 display circuitry ...

Page 17: ...enoid valve SV4 is de energised in the event of a motor drive failure thus cutting off the HFO driving gas pressure SV4 also serves to modulate the HFO driving gas pressure in various ways during conventional ventilation that is during the inspiratory phase or during the expiratory phase thus allowing combined modes of HFO and conventional ventilation ...

Page 18: ...lectronic and Pneumatic 4 1 ELECTRONIC MODULE 1 Remove 2 screws at rear and 2 screws at either side of the unit 2 Slide top cover to the rear and remove 3 To remove the PCB assemblies remove retaining thumbscrews one for each board next to the edge connector 4 Disconnect all pneumatic and electrical connections to the board and pull board out ...

Page 19: ...rical and pneumatic connections must be disconnected before attempting to gain access to either the Electronic or Pneumatic modules 1 Open side flap 2 Remove 2 screws at rear and 2 screws at base of unit 3 Lift complete unit from base The unit can then be placed on the work surface upside down See page 20 ...

Page 20: ...o gain access to the base of the pneumatic unit see page 19 b Remove the four screws 1 c Remove proximal airway pressure tube connection 2 d Remove fresh gas monitoring tube connection 3 e Loosen both locking screws 4 and disconnect 25 way plug It is now possible to separate the pneumatic module from the electronic chassis ...

Page 21: ... Page 21 of 84 4 4 BACK PANEL 1 Auxiliary Output 2 FIO2 Calibration adjustment 3 Time elapsed meter electronic module 4 Time elapsed meter pneumatic module 5 Fuse holders 6 Product information plate 7 FIO2 Adjustment Tool 8 Fan and Filter 9 Filter only ...

Page 22: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 22 of 84 4 5 PNEUMATIC LAYOUT The physical positioning of the pneumatic components is shown in the following schematic ...

Page 23: ... Remove the two screws retaining the manifold and lift it clear see above diagram Disconnect the cell connector Replace cell Part No N2191 and reconnect ensuring that the foam rubber pad is fitted between the cell and the mounting base and that the gas seal O ring is fitted to the manifold After fitting recalibrate the cell as described in section 6 2 6 1 on page 69 ...

Page 24: ...s to the pneumatic module see section 4 2 on page 19 1 Release 2 screws on the 9 pin D connector and unplug connector 2 Fully unscrew the retaining nuts on the two pneumatic connectors and remove the two tubes Note that one of the connectors is marked for identification on re assembly 3 Remove 2 screws nuts and washers ...

Page 25: ... plate and lift clear 5 Remove the 2 screws securing the orifice block 6 Remove the 3 screws retaining the motor assembly 7 Remove the sub assembly by tilting the top towards you 8 Replace sub assembly in reverse order The sub assembly shown below is available as a service exchange part Part No N2524 ...

Page 26: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 26 of 84 5 CIRCUIT DETAILS 5 1 A0700 02 ...

Page 27: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 27 of 84 ...

Page 28: ...480EH 1 00 LED 6 L0008 Display extender board 1 00 ITEM 2 D0406 1N4148 2 00 D1 D2 D0546 LED Red Rectangular LSB480EH 1 00 LED 7 M0307 Terminal Pin Pcb single sided 4 00 ITEM 5 D0590 Display 7 Segment MAN4640A 16 00 DISP 1 7 DISP 9 17 R0424 330R Resistor 1 0 25W SMA0207 1 00 R408 R0416 150R Resistor 1 0 25W SMA0207 1 00 R407 S0212 IC Socket 16 way DIL 2 00 SK1 SK2 S0445 Socket 14 way DIL 15 00 ITEM...

Page 29: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 29 of 84 5 2 A0701 02 ...

Page 30: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 30 of 84 ...

Page 31: ...omponent Description 1 Used Component Reference s J0701 LED pcb blank 1 00 ITEM 1 PCB D0308 LED Green Rectangular LGB480EH 3 00 LED2 3 4 D0508 74HC00 1 00 U400 M0307 Terminal Pin Pcb single sided 13 00 ITEM 5 Wire pin 1 10 X O N R0463 10K Resistor 1 0 25W SMA0207 2 00 R403 404 R0416 151R Resistor 1 0 25W SMA0207 3 00 R401 R402 R405 S0242 IC Socket 14 way DIL 1 00 ITEM 6 U400 M0718 Label PCB Identi...

Page 32: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 32 of 84 5 3 A0702 02 ...

Page 33: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 33 of 84 ...

Page 34: ...00 U12 D0581 LMC660AIN 2 00 U13 U202 D0638 ZTX450 1 00 Q3 D0284 BZX79C4V7 was BZY88C 4v7 1 00 D3 D0636 IRLU110 1 00 Q4 D0305 ADC0809CCN 1 00 U18 D0336 BC337 4 00 Q1 Q2 Q500 Q502 D0402 1N4007 Plastic Diode 1 00 D5 D0406 1N4148 4 00 D1 D2 D4 D201 D0525 4066 Quad Bilaterial Switch 1 00 U201 D0573 74HCT74N 1 00 U15 D0574 74HCT573N 1 00 U16 D0575 74HCT02N 1 00 U17 D0582 80C31P Phillips 1 00 U14 D0584 C...

Page 35: ...or 1 0 25W SMA0207 4 00 R1 3 4 R45 R0555 470K x 8 Resistor Network 1 00 RU3 R0556 10K x 8 Resistor Network 1 00 RU4 R0571 10K Resistor 1 0 125W small 2 00 R213 R214 S0241 IC Socket 8 way DIL 4 00 ITEM 8 U7 8 11 U500 S0242 IC Socket 14 way DIL 9 00 ITEM 9 U3 4 9 13 15 17 200 201 U202 S0212 IC Socket 16 way DIL 5 00 ITEM 10 U5 RU1 RU2 SK1 SK2 S0237 IC Socket 20 way DIL 3 00 ITEM 11 U16 12 U10 S0209 ...

Page 36: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 36 of 84 5 4 A0736 01 ...

Page 37: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 37 of 84 ...

Page 38: ... Cap 63V 20 polyester 1 00 C11 D0407 BAT85 16 00 D1 D5 D19 D0585 BC327 1 00 T1 D0638 ZTX450 3 00 T2 T4 D0576 27C128A 20 1 00 U1 D0452 HM6264LP 150 or UM6264B10L or 1 00 U2 D0483 74LS174 1 00 U3 D0578 74AC540 2 00 U4 U21 D0305 ADC0809CCN 1 00 U5 D0595 74LS148N 1 00 U6 D0594 ZN1034 1 00 U7 D0617 NMA0515D 1 00 U8 D0299 74LS02PC 1 00 U9 D0450 68BO9EP 1 00 U10 D0523 74HCT245 1 00 U11 D0618 MAX691 1 00 ...

Page 39: ...5W SMA0207 1 00 R50 R0463 10K Resistor 1 0 25W SMA0207 29 00 R5 13 29 31 35 41 42 52 53 57 58 61 62 64 67 68 70 72 73 75 76 81 86 88 89 91 92 96 99 100 102 R0500 820K Resistor 1 0 25W SMA0207 1 00 R55 R0467 15K Resistor 1 0 25W SMA0207 1 00 R56 R0464 12 1K Resistor 1 0 25W SMA020 4 00 R69 71 74 R101 R0471 27K Resistor 1 0 25W SMA0207 2 00 R82 85 R0506 3 3M Resistor 1 0 25W SMA0207 2 00 R97 R98 R04...

Page 40: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 40 of 84 5 5 A0737 01 ...

Page 41: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 41 of 84 ...

Page 42: ...CB C0450 0 1uF Capacitor 63V 10 MKS2 3 00 C1 C2 C4 R0429 499R Resistor 1 0 25W SMA0207 1 00 R1 R0436 1 0K Resistor 1 0 25W SMA0207 1 00 R2 R0439 1 5K Resistor 1 0 25W SMA0207 1 00 R3 R0442 2 0K Resistor 1 0 25W SMA0207 1 00 R4 R0212 20K Resistor 1 0 25W SMA0207 3 00 R5 R7 D0629 LM3914N 4 00 U1 U4 D0630 LED Array 10 bar DIL 4 00 U5 U8 S0237 IC Socket 20 way DIL 4 00 ITEM 5 U5 U8 S0239 IC Socket 18 ...

Page 43: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 43 of 84 5 6 A0738 01 ...

Page 44: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 44 of 84 ...

Page 45: ...esistor 1 0 25W SMA0207 1 00 R12 R0425 332R Resistor 1 0 25W SMA0207 1 00 R13 R0405 10R Resistor 1 0 25W SMA0207 1 00 R14 R0478 45K3 Resistor 1 0 25W SMA0207 1 00 R16 R0436 1 0K Resistor 1 0 25W SMA0207 2 00 R17 R22 R0448 3K16 Resistor 1 0 25W SMA0207 1 00 R19 R0337 3K3 Resistor 1 0 25W SMA0207 1 00 R21 R0457 6K8 Resistor 1 0 25W SMA0207 1 00 R20 D0525 4066 Quad Bilaterial Switch 1 00 U1 D0628 74H...

Page 46: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 46 of 84 5 7 A0738 02 ...

Page 47: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 47 of 84 ...

Page 48: ...SMA0207 1 00 R16 R0436 1 0K Resistor 1 0 25W SMA0207 4 00 R17 R22 R27 R31 R0448 3K16 Resistor 1 0 25W SMA0207 1 00 R19 R0316 820R Resistor 1 0 25W SMA0207 1 00 R23 R0337 3K3 Resistor 1 0 25W SMA0207 1 00 R21 R0277 220R Resistor 1 0 25W SMA0207 1 00 R24 R0457 6K8 Resistor 1 0 25W SMA0207 1 00 R20 R0564 3K9 Resistor 1 0 25W SMA0207 1 00 R25 R0418 182R Resistor 1 0 25W SMA0207 1 00 R26 R0577 130R Res...

Page 49: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 49 of 84 5 8 A0739 01 ...

Page 50: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 50 of 84 ...

Page 51: ...2 0R Resistor 1 0 25W SMA0207 8 00 R4 5 8 R9 R12 R0436 1 0K Resistor 1 0 25W SMA0207 2 00 R6 R7 R0443 2 2K Resistor 1 0 25W SMA0207 1 00 R15 R0460 7 5K Resistor 1 0 25W SMA0207 1 00 R16 R0417 180R Resistor 1 0 25W SMA0207 1 00 R18 R0486 100K Resistor 1 0 25W SMA0207 1 00 R19 P0467 Pcb Header 2 way 1 00 JP1 P0230 64 way Plug right angle 1 00 PLC M0680 01 Heatsink modified 1 00 ITEM 2 M0228 Heat Sin...

Page 52: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 52 of 84 5 9 SERIAL INTERFACE OPTION ...

Page 53: ...MA0512D 1 00 U23 D0432 7805 Regulator 1 00 U24 D0250 BZX79C6V8 2 00 D300 301 R0443 2 2K Resistor 1 0 25W SMA0207 2 00 R300 301 R0432 680R Resistor 1 0 25W 2 00 R302 303 R0425 332R Resistor 1 0 25W SMA0207 2 00 R304 305 R0436 1 0K Resistor 1 0 25W SMA0207 2 00 R306 307 R0343 300K 1 50PPM 0 25W 1 00 R308 R0557 1K0 Resistor 5 1W 250PPM PR01 2 00 R309 310 C0433 1uF Capacitor 35V 20 Tantalum 1 00 C300 ...

Page 54: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 54 of 84 5 10 WIRELOOM ...

Page 55: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 55 of 84 5 11 FRONT PANEL ...

Page 56: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 56 of 84 5 12 POWER SUPPLY WIRING DIAGRAM ...

Page 57: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 57 of 84 5 13 ELECTRONIC PNEUMATIC MODULE INTERCONNECTION ...

Page 58: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 58 of 84 5 14 ELECTRONIC CHASSIS ...

Page 59: ...SLE2000 HFO Service Manual Doc No SM 0001 Issue 7 0 Page 59 of 84 ...

Page 60: ...0 1 5v AA size Cells 1 00 ITEM 25 M0701 04 80mm Fan Filter Insert Pad 2 00 ITEM 27 M0701 05 80mm Fan Filter Grille 2 00 ITEM 28 N2126 Yellow lens 19 952 4 3 00 ITEM 30 N2127 Red Lens 19 952 2 1 00 ITEM 31 T0671 Cover HFO 1 00 ITEM 35 T2019 Washer special sponge rubber 3 00 ITEM 36 O0413 Mode Rotary Switch RA3041 1 00 SW1 N2125 Sq Illum Push Button Switch 4 00 SW2 SW3 SW8 SW10 O0409 Locking Switch ...

Page 61: ...1 00 ET1 M0677 Power supply NFS110 7902P 1 00 PSU M0677 01 Cover for psu M0677 1 00 P0025 03 3 amp Mains Fuse 1 00 M0712 PCB Guide 101 6mm long 6 00 Pk 10 M0712 01 PCB Guide 152 4 mm long 6 00 Pk 10 T0686 Window HFO 1 00 T0704 Tubing holder 1 00 T0705 Cover dampener assy 1 00 T0706 Spacer dampener assy 2 00 T0707 Retaining disc dampener assy 2 00 N2520 Y Piece hose connector YS4 1 00 N2519 Tubing ...

Page 62: ...k connector R A 1 00 T0619 Plate Motor 1 00 T0620 Bracket Solenoid 4 Valve 1 00 T0621 Partition Inner 1 00 T0622 Partition Outer 1 00 T0624 Washer special seal nylon 1 00 T0624 01 Washer special seal 1 2 20unf 1 00 T0625 Spacer M3 x 22mm lg round bar 2 00 T0626 Banjo Tee Blender output 1 00 T0627 Mount gauge 1 00 T0628 Banjo bolt 1 00 T0629 Manifold 1 00 T0644 Orifice Block HFO 1 00 T0647 Chopper ...

Page 63: ...tective cap Dia 19mm 2 0 N2377 Spring Clip 1 00 N2376 Rubber Tube Red 13mm dia 0 20 Metre N2362 1511 5 3 M5 Male Stud 27 00 N2362 01 Coupling modified 2 00 N2363 1511 6 4 M5 Male Stud 2 00 N2361 1510 5 3 1 8 Male Stud 1 00 N2360 1500 5 3 1 8 Male Stud Elbow 7 00 N2364 1610 5 3 M5 Banjo Ring Piece 15 00 N2365 1631 01 M5 Single Banjo 15 00 N2369 2601 4 5 M5 Hosetail Male 6 00 N2367 2500 1 8 Male Bar...

Page 64: ... stated All pressure measurements are to a tolerance of 1mmH2O unless otherwise stated 6 2 ELECTRONIC MODULE 6 2 1 POWER SUPPLY UNIT Voltage verification and setting Check the following pin voltages with mains applied to the unit Measure between pins Voltage 5 GND and 3 5 12V 0 1V see below for adjustment 5 GND and 9 12V 0 36V 5 GND and 13 between 22 8 and 26 4V Monitoring the voltage between pins...

Page 65: ...23b is 0 42V 0 01V 6 2 3 3 Fresh Gas Block and Leak Alarm Connect DVM between pins 2 and 4 of PTR2 With PTR2 ports open to atmosphere adjust RV500 to give 0 00V 1mV Connect the fresh gas pressure tube to ve port of PTR2 Switch ventilator on to CPAP mode and confirm that fresh gas flow is 5L min 0 25L min With a suitable flow control valve create a pressure at the fresh gas outlet of 17 5cmH2O 0 5c...

Page 66: ... fully clockwise Switch ventilator into PTV mode and slowly draw 2ml of air from the tracheal port at an approximate rate of 2ml per 1 2 second repeatedly Starting with RV202 in the fully clockwise position adjust gradually anticlockwise until ventilator triggers reliably at this degree of inspiratory effort 6 2 3 5 3 PTV sensitivity control verification Replace 2ml syringe with 50ml syringe Turn ...

Page 67: ...e of 60 cmH2O 0 5cmH2O Adjust P14 to give 4 63V 0 01V Set up a pressure of 60 cmH2O 0 5cmH2O Confirm TP2 is 0 28V 0 01V Remove pressure source from PTR1 port Set low alarm to 0 cmH2O Confirm that the displayed low alarm level coincides with the displayed pressure level Reconnect pressure source to PTR1 port Set high FTC and low alarm controls fully clockwise Switch ventilator to CMV mode Adjust P1...

Page 68: ... speed to 3Hz Adjust P2 so that the HFO fail alarm is activated Then slowly adjust P2 back again so that HFO fail alarm is just de activated Short out JP1 and check that the HFO fail alarm is activated and that the jet feed solenoid is de energised in each instance 6 2 5 5 Fan Fail Alarm Verification Short out JP3 emulating Fan2 fail and JP4 emulating Fan1 fail in turn and verify that the fan fail...

Page 69: ...supply only to ventilator Adjust 100 Oxygen preset on back panel of ventilator so that displayed FIO2 is 100 b Set blender to 21 Connect air supply only to ventilator If necessary adjust RV2 so that displayed FIO2 is 21 Repeat steps a and b until both displayed values are correct 6 2 6 2 Alarm sounder volume Set up an alarm condition on the ventilator Adjust RV1 to an acceptable alarm volume beari...

Page 70: ... and by adjusting the blender control in 10 steps verify that the oxygen output is accurate to within 3 of each step With the blender set to 60 O2 increase the air supply pressure to the ventilator and note that the blender alarm is activated when air pressure is approximately 30psi greater than O2 pressure Gradually reduce air pressure until the alarm is de activated Note that O2 concentration is...

Page 71: ... Select CPAP mode HFO OFF 8 Check operation of MANUAL BREATH push button and by adjustment of INSP TIME control confirm that a range of inspiratory times from 0 1 sec to 3 0 sec shall be obtained and that this adjustment can be monitored on the INSP TIME display 9 Check that no mandatory breaths are present other than those produced by the MANUAL BREATH push button 10 Switch HFO successively to EX...

Page 72: ...IL alarm level to 10 cmH2O HIGH alarm level to 30 cmH2O and CPAP alarm level to 5 cmH2O Press reset button observe that the displayed pressure wave crosses the CYCLE FAIL alarm setting on the LCD display and bargraph and that no alarms are present Disconnect the proximal airway pressure monitoring tube from the pressure port and check that a CYCLE FAIL audible and visual alarm is activated Replace...

Page 73: ...SPLAY TIMEBASE VERIFYING Check that the display timebase rate control setting corresponds with the digitally displayed rate for settings of 6 4 3 2 1 and 0 5 seconds 7 4 DISPLAY PRESSURE RANGE VERIFYING Check that the display pressure range control setting corresponds with the digitally displayed range for settings of 60 to 60 cmH2O and 5 to 60 cmH2O 7 5 FREEZE PUSH BUTTON VERIFYING FREEZE PUSH BU...

Page 74: ...a 2ml syringe drawn out over a period of second ensure reliable triggering at the maximum sensitivity setting Repeat the test using a 10ml syringe with the sensitivity control at its minimum setting 2 Check that the trigger back up system works properly and that the back up audible beep and LED are activated when a back up breath is initialised 7 10 SIMV MODE Check operation of the SIMV trigger sy...

Page 75: ...ot 45 cmH2O airway pressure in its fully clockwise position 2 Check that the INSP pressure regulator can be set to produce up to 64 cmH2O inspiratory airway pressure in its fully clockwise position 3 Check that the OSCILLATOR pressure regulator can be set to produce up to 90 cmH2O Peak to peak pressure with the ET tube occluded and HFO rate set to 3Hz 4 With the above settings check that the mean ...

Page 76: ... Reconnect O2 supply and remove air supply Set blender to 100 and observe that displayed FIO2 is 100 for adjustment see section 6 2 6 1 on page 69 If the required value cannot be set within 4 or the reading is unstable then replace the cell For the removal of the oxygen cell see section 4 6 on page 23 8 1 4 INSPIRATORY NOZZLE Set ventilator to CMV 60BPM 0 5 sec inspiration time Set a driving gas p...

Page 77: ...n of all tubing electrical wiring connectors crimps screws nuts hardware and check the general condition of all other internal components and assemblies Inspection of the mains failure battery holder for corrosion and replacement of the battery Pneumatic and electronic testing and where necessary calibration of ventilator 8 2 2 OVERHAUL Overhaul should be carried out at a maximum of 10 000 hours o...

Page 78: ...s supply CAUTION Do not allow water or other liquids to enter the control module or its electrical sockets Electronic malfunction may result DO NOT steam autoclave the Oxygen blender or otherwise subject it to temperatures above 63 C 145 F DO NOT immerse any part of the SLE2000 HFO in any liquid decontaminant or fluids with the exception of the exhalation block see section 9 2 on page 79 DO NOT us...

Page 79: ...tween patients 3 Filter N2187 fitted to the rear of the exhalation block This serves two purposes a To reduce the noise of the inspiratory gas flow b To act as a bacteria filter for the expiratory gas should the filter 2 be omitted 9 2 EXHALATION BLOCK This can be removed and steam autoclaved The orifice block and the rotating jet shaft can be wiped with a mild detergent Care should be taken when ...

Page 80: ... not connected check LCD ribbon cable HELP message Open circuit analogue inputs to processor Check potentiometers and wiring harness Refer to wire harness circuit diagram SOL message a Faulty or open circuit solenoid b Faulty BPM range switch c Faulty power supply d Harness fault Check solenoid and replace if necessary Replace Check for short circuits otherwise replace PSU and recalibrate Check in...

Page 81: ... does not agree with blender setting 1 Check that both air and O2 are connected to the correct supplies 2 Oxygen cell has drifted 3 Oxygen cell is faulty Reconnect if necessary Recalibrate oxygen cell see page 69 Replace oxygen cell Leak alarm Leak alarm when patient circuit is connected 1 No Air O2 supply 2 Excessive PIP 3 Leak in patient circuit 4 Fault in fresh gas supply Connect supply gas as ...

Page 82: ...y regulator Ensure Air O2 supply 4 BAR Adjust High alarm threshold Replace patient circuit Relocate exhalation block Refer to qualified service engineer Refer to qualified service engineer Low CPAP Desired CPAP pressure cannot be achieved Excessive residual PEEP 1 Faulty CPAP regulator 2 Blocked CPAP nozzle 3 Exhalation block not properly located Faulty patient circuit Refer to qualified service e...

Page 83: ...dule 14 H HFO Alarm 69 HFO Operation 16 HFO Pressure Activity Monitor 10 HFO pressure check 76 HFO Rate 10 HFO Rate Display 68 L LCD Backlight Inverter 13 LCD display 6 7 10 13 67 70 80 Leak Alarm 65 LED Bargraph 11 M Maximum Inspiration Time 65 Monthly Operational Checks 76 Motor Drive Board 66 Motor Drive Circuit 13 Motor Stall Alarm 10 68 O O2 Signal Processing 12 Operating Modes 6 Conventional...

Page 84: ...ion 5 Solenoid valve SV1 inspiratory 10 16 77 SV3 waveshape 13 16 77 SV4 HFO driving gas 10 17 T Technical Specification 6 V Ventilator Cpu PCB set up 65 Verifying Block and Leak alarms 74 Display Pressure Range 73 Display Timebase 73 FAN FAIL 74 Freeze Push Button 73 HFO FAIL 73 HFO Modulation 72 Pressure Controls 75 PTV Mode 74 SIMV Mode 74 Slow Rise Waveform 74 W Watchdog 64 waveform 6 16 ...

Search results

Summary of Contents for SLE2000 HFO

Reviews:

SLE SLE2000 HFO, Service Manual, Page: 82 / 84

Search results

Summary of Contents for SLE2000 HFO

Reviews: