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Servo Ventilator 300/300A

Service procedures

E382 E380E 061 01 03 01

Siemens-Elema AB

103

4. Service procedures

Selecting the language and
barometric pressure unit

....................... 104

Selecting the address code

................... 105

Selecting the voltage setting

................. 105

Replacing the fuses

............................... 106

Replacing the internal battery

................ 107

Replacing the battery on
PC 1587 Computer Interface

................. 108

Resetting the trend data memory
and real time clock

................................ 108

Summary of Contents for Servo Ventilator 300

Page 1: ...ServoVentilator 300 300A Service Manual E382 E380E 061 01 03 01 Adult Pediatric Neonate 15 5 11 2 19 19 1 13 0 35 261 5 0 259 266 5 1 21 SIEMENS ...

Page 2: ... kPa 1 kPa 0 01 bar 1 bar 100 kPa 1 kPa i 10 cm H2 O 1 cm H2 O i 0 1 kPa 1 kPa i 0 01 at 1 at 100 kPa 1 kPa i 0 01 kgf cm2 1 kgf cm2 i 100 kPa 1 kPa i 0 01 kp cm2 1 kp cm2 i 100 kPa 1 kPa i 0 145 psi 1 psi i 6 9 kPa Calibration and functional check After any service intervention in Servo Ventilator 300 300A perform a Calibration and Functional check according to instructions in the Operating Manua...

Page 3: ...if they are used as power supply back up at mains failure The battery on PC 1587 COMPUTER INTERFACE shall be replaced every 5 years according to instructions in this Service Manual Important To the responsible service personnel The contents of this document are not binding If any significant difference is found between the product and this document please contact Siemens for further information We...

Page 4: ...4 Siemens Elema AB E382 E380E 061 01 03 01 Servo Ventilator 300 300A Notes Notes ...

Page 5: ...1 01 03 01 Siemens Elema AB 5 Contents 1 Introduction 7 2 Descriptionoffunctions 21 3 Disassemblingandassembling 81 4 Serviceprocedures 103 5 Troubleshooting 109 6 Productchangehistory 113 7 Index 115 8 Diagrams 121 1 2 3 4 5 6 7 8 Contents ...

Page 6: ...6 Siemens Elema AB E382 E380E 061 01 03 01 Servo Ventilator 300 300A Notes Notes ...

Page 7: ...Servo Ventilator 300 300A Introduction E382 E380E 061 01 03 01 Siemens Elema AB 7 1 1 Introduction Main units 8 Basic principles 12 ...

Page 8: ...vided into two main units Control unit 1 The control unit consists of the panel section 2 and the control section 3 Patient unit 4 The patient unit consists of the pneumatic section 5 and the power section 6 The patient unit and the control unit are connected to each other with the inter connection cable 7 3 7 2 1 300 A00X 4 5 6 ...

Page 9: ...ards The panel section attached to the control section is the other part of the control unit With the panel section removed from the control section the following parts are accessible Front panel controls PC 1614 PANEL INTERFACE 1 with PC 1588 MICROPROCESSOR MODULE and PAN PROM PC 1745 AUTOMODE PANEL INTERFACE 2 Only for SV 300A PC 1617 CONTROL INTERCONNECTION 3 1 300 A01X 2 3 300 A02X ...

Page 10: ...th PC 1588 MICROPROCESSOR MODULE and MON PROM Patient unit The upper part of the patient unit is the pneumatic section Under the lid of the pneumatic section you will find the Inspiratory channel 1 including O2 cell Expiratory channel 2 including flow transducer The inspiratory valves gas modules are located in three different slots in the pneumatic section Inspiratory valve unit AIR 3 Inspiratory...

Page 11: ...valve 3 PC 1622 VALVE CONTROL 4 PC 1611 EXPIRATORY PRESSURE AMPLIFIER 5 Safety valve 6 with PC 1613 SAFETY VALVE DRIVER PC 1611 INSPIRATORY PRESSURE AMPLIFIER 7 PC 1607 PNEUMATIC INTERCONNECTION 8 The lower part of the patient unit is the power section With the pneumatic section separated from the power section the following parts are accessible Mains power inlet 1 External battery inlet 2 Operati...

Page 12: ...12 Siemens Elema AB E382 E380E 061 01 03 01 Introduction Servo Ventilator 300 300A 1 Basic principles 12 1 4 5 3 6 7 10 8 9 11 300 F71X 2 ...

Page 13: ...e will open in case of a power failure and or if the inspi ratory pressure exceeds 120 cm H2 O It will also open if the set upper pressure limit is exceeded by 5 cm H2 O 7 The oxygen concentration inside the inspiratory pipe is measured by the O2 cell The O2 cell is protected by a bacteria filter Expiratory flow 8 The patient system s expiratory gas tube is connected at the expiratory inlet The ex...

Page 14: ... positioning compensation for small long time deviation D action gives a speed up positioning reaction at fast changes The signals from these parts from the parts used in the actual combination are added The sum is the total ERROR SIGNAL which may be converted before use as an ACTUATING SIGNAL Each CONTROLLING ELEMENT in the ventilator inspiratory valves and expiratory valve is positioned by the A...

Page 15: ...PI CONTROL results in the DESIRED POSITION VALUE reference variable for the POSITION PD CONTROL The POSITION SENSOR at the INSPIRATORY VALVE generates a valve position signal which is used as the ACTUAL POSITION VALUE in the POSITION PD CONTROL The actuating signal from the POSITION PD CONTROL results in the DESIRED CURRENT VALUE reference variable for the CURRENT CONTROL CURRENT POWER The ACTUAL ...

Page 16: ...ATOR directly generates a rough approximate POSITION VALUE which helps to obtain the desired position within minimum time The input information of ACTUAL SUPPLY PRESSURE VALUE is used inverted and adequatly scaled to create one small part of the DESIRED CURRENT VALUE This small part of the DESIRED CURRENT VALUE will in combination with the opening force of the INSPIRATORY VALVE implied by the pres...

Page 17: ...sed the shadowed main forward path includes the PRESSURE PID CONTROL block in the REFERENCE TIMING main block DESIRED VALUE is the PRESSURE REFERENCE signal from the microprocessor module MODE CPU within the main block REFERENCE TIMING Pressure regulation DESIRED PRESS VALUE ACTUAL PRESS VALUE POSITION SENSOR INSPIRATORY VALVE CONTROLLED SYSTEM VALVE SOLENOID PRESSURE TRANSDUCERS FLOW ACTUAL CURRE...

Page 18: ...20 Siemens Elema AB E382 E380E 061 01 03 01 Introduction Servo Ventilator 300 300A 1 Notes ...

Page 19: ...ting signal from the POSITION PD CONTROL block is the EXP VALVE CURRENT REF signal used as DESIRED VALUE for the CURRENT CONTROL CURRENT POWER block The ACTUAL CURRENT VALUE is an internal feedback signal used in the CURRENT CONTROL block The actuating signal from the output stage of the CURRENT CONTROL CURRENT POWER is a pulse train with pulse width modulation used to actuate the EXPIRATORY VALVE...

Page 20: ...E O2 CONC PATIENT UNIT O2 FLOW REF CONTROL UNIT PRESSURE PID CONTROL Pressure INSPIRATORY CONTROL MODE CPU Flow SELECTION OF PRESSURE OR FLOW REGULATION PRESSURE REF FLOW REF FLOW REF INSP PRESSURE COMPUTER INTERFACE INPUT SIGNALS INPUT SIGNALS INPUT FROM SV 300 INTERNAL MICROPROCESSORS EXTERNAL CONTROL SIGNALS EXTERNAL OUTPUT SIGNALS CONTROL SIGNALS MONITORING REFERENCE TIMING MIXER O2 FLOW REF A...

Page 21: ...ORY VALVE UNIT O2 The control system is described in section Inspiratory feedback control system in this chapter Expiratory regulation 8 PEEP level setting is used as DESIRED EXPIRATORY PRESSURE VALUE See section Expiratory feedback control system in this chapter 9 EXPIRATORY VALVE interacts with the VALVE CONTROL board as described in section Expiratory feedback control system in this chapter Mon...

Page 22: ...20 Siemens Elema AB E382 E380E 061 01 03 01 Introduction Servo Ventilator 300 300A 1 Notes ...

Page 23: ...rface dummy 33 4 Monitoring 34 5 Optional PC board slot 48 6 Reference Timing 49 7 Inspiratory control 61 Patient unit Pneumatic section 62 8 Inspiratory valve unit Air 62 9 Inspiratory valve unit O2 67 10 Inspiratory valve unit Optional 67 11 Inspiratory channel 68 12 Inspiratory pressure 70 13 Expiratory pressure 71 14 Expiratory channel 71 15 Valve control 73 16 Expiratory valve 74 17 Optional ...

Page 24: ...l unit Panel section 1 Front panel 1 1 Patient range selection 1 2 Airway pressure etc 2 Panel interface 2 1 Panel CPU including PAN PROM functions 2 2 Parameter buffers etc Functional descriptions of the Main blocks and Functional blocks can be found in this chapter This functional description is based on and refers to the Functional block diagram that can be found as a fold out on the rear cover...

Page 25: ...nversion Digital analog conversion Digital I O PC 1588 includes a green red WATCHDOG LED D1 3 The LED indications are as follows Green LED Microprocessor program is running Red LED Program error indication LED not lit Microprocessor program not running PC 1588 also includes an exchangable program memory PROM 2 The function of PC 1588 depends on this PROM which is different on the five different en...

Page 26: ...s delivered with the new PROM onto the old label on the control section Changing PROM versions in the ventilator is used to add or change functions in the ventilator For that reason it may also be necessary to replace the Operating Manual in connection with PROM replacements The Operating Manual valid for the combination of PROMs used in the ventilator is identified with a version number stated bo...

Page 27: ...l u d A c i r t a i d e P e t a n o e N t i n U e m i t y a l e d m r a l a a e n p A 0 2 5 1 0 1 s g n i r u d w o l f t n a t s n o C w o l f s a i B e m i t n o i t a r i p x e 2 3 2 6 1 1 8 5 0 s l m n i m l w o l f y r o t a r i p s n i x a M 0 0 0 3 0 8 1 0 0 5 0 3 0 0 2 2 1 s l m n i m l r o y r o t a r i p s n i d e r u s a e m r o t e s e r p x a M e m u l o v l a d i t y r o t a r i p x ...

Page 28: ...meters 2 four character green LED displays Showing information generated via 2 1 PANEL CPU 3 four character red LED displays Showing information generated via 4 1 MONITOR ALARM CPU 2 fields of double column LED bargraph 3 potentiometer knobs Volume Upper alarm limit Lower alarm limit 3 yellow indicator LEDs 1 2 Airway pressure For control and monitoring of AIRWAY PRESSURE parameters 4 four charact...

Page 29: ...lds each comprising 1 red indicator LED 1 yellow indicator LED 1 touch sensor 1 non locking two way selector for Reset and for 2 min off This information is handled by the main block 4 MONITORING 1 7 Pause hold For the control via main block 6 REFERENCE TIMING of pause hold functions 1 non locking two way selector for Insp pause hold and for Exp pause hold 1 8 Mode selection For the selection of V...

Page 30: ... Panel interface This main block consists of the board PC 1614 PANEL INTERFACE including its PC1588 MICROPROCESSOR MODULE The board is connected via N18 N19 and N40 to the mother board PC 1617 CONTROL INTERCONNEC TION and it has connectors P81 P99 for the connection of FRONT PANEL controls The FRONT PANEL touch sensors as well as displays and indicator LEDs are integrated parts of this board Refer...

Page 31: ...lock 2 1 PANEL CPU 2 9 Monitor display This block contains all the red alpha numerical four character light emitting diode displays as well as eight yellow and eight red alarm indicating light emitting diodes below the Alarms and messages display on the front panel This block is driven directly from the main block 4 MONITORING 2A Automode panel interface The board PC 1745 AUTOMODE PANEL INTERFACE ...

Page 32: ...e board PC 1587 COMPUTER INTERFACE was replaced during the mandatory upgrades SV 300 Upgrade 1995 09 US market SV 300 Upgrade 1995 10 Rest of World As the board PC 1587D was included in these mandatory upgrades all SV 300 300A must be equipped with PC 1587D or higher The main block COMPUTER INTERFACE consists of the board PC 1587 COMPUTER INTERFACE which includes one microprocessor and a COM PROM ...

Page 33: ...is switched off Normal service interval for exchange of the battery is approx 5 years Replacement of the battery is described in chapter 4 Service procedures The voltage level in the battery circuit is monitored resulting in an error indication on LED D3 see 3 9 LED indicators if the voltage level is below 3 6 V or above 4 5 V An information message is also displayed on Servo Screen 390 if such un...

Page 34: ...guration and signal names can be found in chapter 8 Diagrams 3 8 Analog input Digital code port 44 pole D sub connector N84 Optional input interface Pin configuration and signal names can be found in chapter 8 Diagrams 300 L24X D1 D9 3 9 LED indicators There are 9 green red LED INDICATORS mounted on PC 1587 The LEDs are visible if the control section cover is removed LED functions D1 WATCHDOG Duri...

Page 35: ...rting with D2 until all four LEDs are green In the hardware test sequence D3 can be of special interest for troubleshooting In the first phase of the hardware test D3 is lit red for a few seconds indicating COM PROM error In the second phase of the hardware test D3 is lit red for a few seconds indicating BATTERY error The hardware test sequence ends showing all LEDs green if no error was detected ...

Page 36: ...M V6 00 PC 1608E and the FAILURE ALARM BOX is not used on SV 300 equipped with MON PROM V6 00 PC 1608E or higher For more information about PROM PC board and Operating Manual versions see chapter 6 Product change history 4 1 Monitor Alarm CPU including MON PROM functions This block includes the board PC 1588 with a MON PROM Some details of the PC 1588 are mentioned in section Microprocessor module...

Page 37: ...u l o v g n i t t e s l e n a p t n o r f n a h t l a n g i s L S S E R P _ M I L 3 y l n o S V r o C V R P g n i r u d d e s u e h t f i m r a l A e d o m n o i t i d n o c m r a l a d e n o i t n e m e e r h t g n i r u d e u r t s i s h t a e r b e v i t u c e s n o c 1 Refer to 6 1 2 Respiratory timing condition 3 2 Identical condition is also monitored separately within the main block 2 Panel...

Page 38: ...than 2 percentage units the alarm is automatically muted for maximum 55 s This also applies at activation of Oxygen breath For O2 concentration alarm also see 4 5 Backup alarm system t x e t s e g a s s e m d n a s m r a l A n o i t i d n o c e r P n o i t i d n o c m r a l A h g i h o o t c n o c 2 O O t e S 1 2 2 0 0 1 O t e S A M P 2 6 w o l o o t c n o c 2 O O t e S 1 2 2 4 2 O t e S 4 2 2 6 9...

Page 39: ... and that is used for the following function At true condition the Airway pressure bargraph indication for Lower alarm limit is flashing For Exp minute volume alarm also see 4 5 BACKUP ALARM SYSTEM t x e t s e g a s s e m d n a s m r a l A n o i t i d n o c m r a l A h g i h o o t e m u l o v e t u n i m p x E M A M P x a m 1 w o l o o t e m u l o v e t u n i m p x E M A M P n i m 2 4 1 5 Apnea PM...

Page 40: ... failure of both gases the safety valve and the expiratory valve will open The alarm in this case t x e t s e g a s s e m d n a s m r a l A n o i t i d n o c m r a l A w o l o o t e r u s s e r p y l p p u s 2 O w o l o o t e r u s s e r p y l p p u s r i A r a b X X 2 O r a b X X r i A P R I A r a b 0 2 d n a P 2 O r a b 0 2 t x e t s e g a s s e m d n a s m r a l A n o i t i d n o c m r a l A r ...

Page 41: ... o i t i d n o c e r P Y R E T T A B g n i h s a l f n w o h s s i e g a s s e m s i h T e t o N E D O M Y R E T T A B L A N R E T N I s 5 3 g n i r u d e v i t c a t x e t s e g a s s e m d n a s m r a l A n o i t i d n o C V X X l a n r e t n I h g i h o o t e g a t l o v y r e t t a b l a n r e t n I U t a b V 5 3 3 V X X l a n r e t n I t f e l y t i c a p a c y r e t t a b d e t i m i L U V 1...

Page 42: ...m table in 4 5 BACKUP ALARM SYSTEM The status of the backup capacitor for this hardware is also checked the capacitor is also checked regularly during operation Internal RAM test concerns the RAM within the block 4 1 MONITOR ALARM CPU Internal ROM test concerns the MON PROM within the block 4 1 MONITOR ALARM CPU Internal CPU test concerns the CPU within the block 4 1 MONITOR ALARM CPU Alarm Table ...

Page 43: ...e t n i r e t u p m o C e d o c r o r r e l a c i n h c e T µ L A U N A M G N I T A R E P O E E S T R P T R A T S E R g n i m i T e c n e r e f e R e d o c r o r r e l a c i n h c e T µ L A U N A M G N I T A R E P O E E S x i M P T R A T S E R l o r t n o c y r o t a r i p s n I e d o c r o r r e l a c i n h c e T µ L A U N A M G N I T A R E P O E E S p x E P T R A T S E R n i l w o l f p x E PMA ...

Page 44: ... p t n o r F o w t e h t n e e w t m o r f r i a p n i g n i m o c s t u p n i L A U N A M G N I T A R E P O E E S R w S e d o c r o r r e l a c i n h c e T h c t i w s e g n a r t n e i t a P L A U N A M G N I T A R E P O E E S M w S e d o c r o r r e l a c i n h c e T r o t c e l e s e d o M L A U N A M G N I T A R E P O E E S C o P e d o c r o r r e l a c i n h c e T g n i t t e s y c n e u q e...

Page 45: ...al from main block 13 EXPIRATORY PRESSURE are used to generate P1 the mean value of PI during inspiration time P2 the mean value of PE during inspiration time P3 the mean value of PI during the first 80 ms of expiration time P4 the mean value of PE during the first 80 ms of expiration time P5 the mean value of PE during the last 32 ms of expiration time P6 the mean value of PE during the time peri...

Page 46: ... n o c e u r t 4 t x e t s e g a s s e m d n a s m r a l A n o i t i d n o c m r a l A 7 A M P d e t c e l e s e g n a r t n e i t a P c i r t a i d e P k r a m e R T L U D A t c e l e S E G N A R R E V O 1 7 m o r f e v i t c a l a n g i s e g n a r r e v O R E X I M U P C e u l a v f e R h g i h g n i t a c i d n i F w o l F r o f s l 5 5 0 F 1 V T I l m 5 9 3 2 1 V T E l m 5 9 3 3 1 V T T E S l...

Page 47: ...egulation algorithms by the block 6 1 MODE CPU and some of them displayed on the front panel The signals INSP FLOW PATIENT and EXP FLOW PATIENT are available at the 3 6 ANALOG I O TERMINAL 4 5 Backup alarm system The internal power supply voltages are monitored in this block If any of the voltage limits are exceeded the supply voltage alarm is activated by the signal POWER_FAILURE H The parameters...

Page 48: ...will be given on the front panel Restart the ventilator 4 5 2 Airway pressure PMA PI Insp pressure signal from main block 12 INSPIRATORY PRESSURE PE Exp pressure signal from main block 13 EXPIRATORY PRESSURE Reference value Pmax Preset Upper pressure limit on Front panel Alarm table n o i t i d n o c m r a l A k r a m e R PI P x a m H m c 6 2 O r o PE P x a m H m c 6 2 O f o y n a y b d e s u a c ...

Page 49: ...see 1 1 PATIENT RANGE SELECTION Alarm table 4 5 3 O2 concentration PMA O2 concentration signal generated within the block 4 5 using O2_CONC signal from the block 11 3 O2 CELL which is analogically compensated for barometric pressure according to BAROMETER PRESSURE signal from 4 6 BAROMETER PRESSURE TRANSDUCER Reference value Set O2 Preset O2 concentration on Front panel Alarm table n o i t i d n o...

Page 50: ...M SYSTEM 4 9 Failure alarm box FAB A FAILURE ALARM BOX FAB must be installed on SV 300 equipped with MON PROM V5 01 The alarm functions of the FAB are integrated on MON PROM V6 00 PC 1608E and the FAB is not used on SV 300 equipped with MON PROM V6 00 PC 1608E or higher See section 4 MONITORING for further information regarding PROM and PC board versions The FAB is mounted on the SV 300 connector ...

Page 51: ...led in one of two different ways depending on if flow regulation or pressure regulation is used The same signal isthereforereferredtowithtwodifferent signal names in the block diagram The signal namesare FLOW REGULATION FLOW REF forflowregulation PRESSURE REGULATION PRESSURE REF forpressure regulation Flow regulation ForflowregulationthesignalFLOW REGULATION FLOW REF is directly used by the block ...

Page 52: ...e If on demand flow isactivatedthePRESSURE REGULATION PRESSURE REF signalwilladoptthe value PREF PEEP using PEEP value according to Front panel setting Pressure Reg Volume Control PRVC mode and Volume Support VS mode ThevalueofPRESSURE REGULATION PRESSURE REF PREF is handled as the sum of two parts accordingtothefollowingaddition PREF PEEP PIN USE PEEP is the Positive End Expiratory Pressure level...

Page 53: ... fCMV Only applicable for the VS mode The value fCMV is the CMV frequency accordingtofrontpanelsetting TheparameterfCALC iscalculatedeverybreath in VS mode In breath number n the value is fCALC n 1 T n T n is the measured time from end of inspiration number n 1 to end of inspiration numbern The result of the above choise of formula 1 or 2 or 3 is that the target Tidal Volume TV dependsonthecalcula...

Page 54: ...During Normal procedure the value of the parameter F is limited to 3 cm H2 O F n 3 cm H2 O max amount End of function 6 The change of pressure reference level from one breath to the next breath during Normal procedure is a calculated low pass filtered difference value Limitation 1 The change increase or decrease of PREF from one breath to the next breath is limited to max 3 cm H2 O Limitation 2 If...

Page 55: ...e started and if then a single breath ends with TVM 50 x TVP This condition will normally occur at reconnection of a patient after disconnection SIMV Vol Contr Pressure Support mode For the mandatory breaths see Volume Control mode above For the spontanous breaths see Pressure Support mode below SIMV Press Contr Pressure Support mode For the mandatory breaths see Pressure Control mode above For th...

Page 56: ...e front panel setting CMV frequency During SIMV modes the Front panel setting SIMV frequency is in use The SIMV frequency defines the duration of the SIMV cycle The first part of each SIMV cycle is a waiting period referred to as the SIMV period The duration of the SIMV period is defined by the front panel setting CMV frequency The INSP TIME signal is also used in the main block 18 EXPIRATORY FLOW...

Page 57: ... n o i t i d d A P S N I E R U S S E R P H m c 5 P E E P t e s e r P 2 0 1 O s h t a e r b r u o f r e t f a d e h s i n i f s i e r u d e c o r p p u t r a t S e h T t r o p p u S e m u l o V p u t r a t S P T r o S 1 6 r o 5 r o 3 r o 2 r o d e r u s a e m e h t s a g n o l s a n o i t i d n o c g n i t i m i l l a n o i t i d d A P S N I E R U S S E R P H m c 5 P E E P t e s e r P 2 1 1 O s h t...

Page 58: ...nd VS mode Preset Insp tidal vol V Ventilator start of a breath V occurs each time the internal respiratory CLOCK signal has emitted 100 clock pulses since last start of inspiration time Preset CMV frequency Stop conditions 0 Ventilator stop insp Time duration since last start insp Preset insp time x 1 100 x Breath cycle Preset Insp time and preset CMV frequency 1 INSP FLOW 5 x Peak INSP FLOW duri...

Page 59: ...iration time The B reaction is inhibited by the block 6 1 MODE CPU during inspiration time and during the first 40 ms after end of inspiration time In SIMV Modes the started breath will be a mandatory breath independant of SIMV cycle phase D During inspiration time when Flow regulation is in use Change to On demand flow which means Pressure regulation with PRESSURE REG PRESSURE REF level Preset PE...

Page 60: ...PIRATION INDICATOR 7 13 6 1 MODE CPU Additional timing conditions applicable for SV 300A As long as the front panel setting for Automode is in position Off and also immediately after switching the front panel setting for Automode into position Off the function of the ventilator with the Mode selector in one of the positions 1 Pressure Control Support 2 Volume Control Support 3 Press Reg Vol Contro...

Page 61: ...value depending on the front panel setting for Patient range Adult 12 s Pediatric 8 s Neonate 5 s Conditions at which the trigger signal PATIENT TRIG is activated When the front panel setting Trigger sensitivity below PEEP is set within its scale between 0 and 17 mbar a trigger signal is generated if the mentioned flow difference reaches a level equal to INSP FLOW and at the same time the EXP PRES...

Page 62: ... the EXP PRESSURE signal from the pressure transducer in the main block 13 EXPIRATORY PRESSURE is used to adjust this reference level for the pressure This adjustment a compensation for pressure drop in the inspiratory airway is to achieve a resulting pressure level in the patient system generated via the main blocks 8 and 9 Inspiratory valve units equal to PRESSURE REGULATION PRESSURE REF PREF as...

Page 63: ...the following table 7 2 Inputs This block is a multiplexor for input signals to the main block 7 INSPIRATORY CONTROL Example of input Front panel setting for O2 concentration O2 CONC SETTING 7 3 Mixer Input signals used in this block are O2 CONC SETTING From main block 1 FRONT PANEL One of the two flow reference signals from main block 6 REFERENCE TIMING Controlled by the block 7 1 MIXER CPU the f...

Page 64: ...th position sensor 8 1 Air inlet The air inlet nipple is a quick coupling where compressed air is connected to the ventilator The design of the air inlet nipple and the colour marking ring varies according to the standard chosen A non return valve for the air inlet is located in the inlet filter cover see 8 2 BACTERIA FILTER 8 2 Bacteria filter The BACTERIA FILTER protects the ventilator from bact...

Page 65: ...in the wrong slot The valve key consists of a plastic guide mounted underneath the inspiratory valve unit and a corresponding guide mounted on the pneumatic section base 8 3 Inspiratory valve temperature sensor The temperature of the supplied gas is measured by the INSPIRATORY VALVE TEMPERATURE SENSOR This sensor is a part of PC 1637 and it is situated in the gas flow The output signal from this s...

Page 66: ...ONITORINGto show the corresponding relative gas supply pressure on the front panel 8 13 DELTA PRESSURE AMPLIFIER 8 13 Delta pressure amplifier The input signal from 8 5 DELTA PRESSURE TRANSDUCER is amplified in the DELTA PRESSURE AMPLIFIER The output signal is influenced by the relative gas supply pressure value from 8 12 SUPPLY PRESSURE AMPLIFIER as well as from 8 3 INSPIRATORY VALVE TEMPERATURE ...

Page 67: ...pensated in the block 8 17 COMPENSATION 5 generate an activating signal which is used as a basic reference for POSITION of the inspiratory valve 8 19 Flow PI control Controller block comparing actual AIR FLOW from the block 8 15 FLOW CALCULATOR with desired AIR FLOW REF signal compensated in the block 8 17 COMPENSATION 5 The actuating output signal is added as a final adjustment to the basic posit...

Page 68: ...ons Servo Ventilator 300 300A 2 8 22 Current power Consists of the board PC 1586 CURRENT POWER Driving stage for the energy going to the block 8 7 INSPIRATORY SOLENOID WITH POSITION SENSOR The result of the output signal is a certain opening of the INSPIRATORY VALVE ...

Page 69: ...o Ultra Nebulizer 345 These products are described in separate documents 9 Inspiratory valve unit O2 The INSPIRATORY VALVE UNIT O2 works in the same way as the 8 INSPIRATORY VALVE UNIT AIR The Description of functions is valid for both types of inspiratory valve units There are however some differences in the design of the different valve units The electrical code that states the valve unit type s...

Page 70: ...and protected by a bacteria filter Service interval 3000 h of operation for exchange of the O2 BACTERIA FILTER The O2 cell gives an output voltage proportional to the partial pressure of oxygen inside the INSPIRATORY PIPE At constant pressure this output is proportional to the O2 concentration in percent In each O2 cell the output signal will stay at a fairly constant level usually within 10 17 mV...

Page 71: ...sion such that the SAFETY VALVE will let out gas if the pressure inside the INSPIRATORY PIPE should exceed 120 cm H2 O even if the solenoid is activated This is an extra safety function and the situation will normally not occur During start up the solenoid is electrically activated so that the solenoid axis is pulled down with a clicking sound This is the normal operational position of the solenoi...

Page 72: ...change of the inspiratory pressure BACTERIA FILTER 12 2 Pressure transducer This differential PRESSURE TRANSDUCER is an integrated part of the board 12 3 PRESSURE AMPLIFIER mounted together with a silicon rubber connection piece It refers the pressure to ambient pressure and gives a linear measurement in the range 20 cm H2 O to 120 cm H2 O Pressure exceeding 200 cm H2 O must be avoided 12 3 Pressu...

Page 73: ...esh net the resistance of which causes a certain proportion of the gas to flow through the measuring channel The flow through and the differential pressure across the measuring channel acts on a small metal disc flag which via a metal pin presses on a small semiconductor strain gauge This consists of diffused resistors on both sides of an elastic silicone rod The resistors are connected as a part ...

Page 74: ...ow connection cable Two potentiometers and a green indicator LED are used when calibrating the flow signal according to chapter Calibration in the Operating Manual The change in resistance in the 14 3 EXPIRA TORY FLOW TRANSDUCER is converted to a corresponding signal voltage This signal a non linear function of the flow is handled in the main block 18 EXP FLOW LINEARIZATION A temperature sensor mo...

Page 75: ...abling disabling is handled through Timing control enabling of the main blocks 8 INSPIRATORY VALVE UNIT AIR and 9 INSPIRATORY VALVE UNIT O2 Timing control disabling of the main block 16 EXPIRATORY VALVE 15 Valve control This main block consists of the board PC 1622 VALVE CONTROL 15 1 PEEP PID control Controller block comparing actual EXP PRESSURE signal from the main block 13 EXPIRATORY PRESSURE w...

Page 76: ...XPIRATORY SOLENOID WITH POSITION SENSOR The result of the output signal is a certain opening of the EXPIRATORY VALVE 16 3 Expiratory solenoid with position sensor The EXPIRATORY SOLENOID controls the opening through the 14 EXPIRATORY CHANNEL by squeezing the 14 5 EXPIRATORY VALVE TUBE to desired position The solenoid receives power from the block 16 2 CURRENT POWER The power supply to the solenoid...

Page 77: ...tric pressure see section Conversion of flow and volume to get reference to ambient pressure in the Operating Manual 18Expiratory flow linearization This main block consists of the board PC 1615 EXP FLOW LINEARIZATION The purpose of this main block is to linearize the output signal for expiratory flow 18 1 Linearizing CPU including LIN PROM functions The LINEARIZING CPU will calculate a compensati...

Page 78: ... operation for cleaning of the dust filter as described in the Operating Manual Patient unit Power section The Power section consists of the main blocks 20 22 which are described below 20 Mains power 20 1 Mains power inlet The MAINS POWER INLET is a male connector at the power section panel Two fuses F11 and F12 and a voltage selector are included in the MAINS POWER INLET The following table state...

Page 79: ...viations in older versions of PC 1618 are also described Even when the mode selector is set to Ventilator Off there is still live current on PC 1618 5 V and 24 V if the power source is Mains or an External battery 24 V LOW POWER REG if the power source is the Internal battery Always disconnect mains power supply as well as external and internal batteries before performing any service intervention ...

Page 80: ...s can vary depending on the different PC board versions 21 3 Voltage control Timing This block administrates the different power supply sources If power suppy is lower than the limits stated below the external battery will automatically be used as power source If no external battery is connected the inter nal battery will be used as power source Mains is used as power supply source as long as main...

Page 81: ... V The battery is charged with up to 500 mA Level 3 is a trickle charge level that will charge the battery with up to 50 mA to keep the voltage level at approx 27 V The time to recharge a discharged battery can be up to 8 hours 22 Operating power 22 1 Internal battery There are two 12 V sealed lead acid batteries connected in series inside the power section used as an internal 24 V battery for bac...

Page 82: ... e when the mode selector is set to any other mode than Ventilator Off 22 4 Grounding terminal The grounding terminal is a potential equalization pin at the power section panel All internal grounds as well as protection ground in the mains power inlet are connected to this grounding terminal 23 Interconnection cable The INTERCONNECTION CABLE is the 2 95 m long 89 leads cable that connects the Cont...

Page 83: ...panel section 86 Assembling the panel section 88 Disassembling the control section 90 Assembling the control section 92 Assembling the panel section to the control section 92 Separating the pneumatic section from the power section 93 Disassembling the power section 94 Assembling the power section 96 Assembling the pneumatic section to the power section 97 Disassembling the pneumatic section 98 Ass...

Page 84: ...o instructions in the Operating Manual General The different main units and sub units of the Servo Ventilator 300 are described in chapter Introduction This information can be useful also when disassembling and assembling the Servo Ventilator 300 Disassembling and assembling of the inspiratory and expiratory channels and of the inspiratory valve units is described in the Operating Manual chapter C...

Page 85: ...recautions to avoid damaging the components ESD protection When working with ESD sensitive compo nents always use a grounded wrist band and grounded work surface Adequate service tools must also be used PC boards spare or exchange parts must always be kept in protective packaging for sensitive electronic device PC boards must not be inserted or removed while the mains power or battery power is app...

Page 86: ...ng methods On older units strips of glue on the connector sides or adhesive tape 2 On newer units screw 3 Removing PC 1588 Remove the securing device see above Remove any remaining glue strips on the connector sides Carefully lift off PC 1588 from the PC board where it is mounted Do not damage the connector pins on PC 1588 Assembling PC 1588 Check that no connector pin on PC 1588 is damaged Carefu...

Page 87: ...Note Before exchanging COM PROMs always disconnect the power supply from the battery on PC 1587 COMPUTER INTERFACE See information regarding power supply disconnection in chapter 4 Service procedures section Resetting the trend data memory and real time clock 300 E06X 1 xxx xxx xxx xxx When removing a PROM chip from the PROM socket always use a PROM extraction tool 1 Order No 62 04 353 E380E Do no...

Page 88: ... has a push button release function Loosen the nut 3 holding the knob and lift off the knob from the control shaft Use the knob holder tool Order No 62 04 197 E380E when removing the control knob Disconnect the connector 4 Remove the two screws 5 and lift off the control 3 4 5 2 1 300 A27X Separating the panel section from the control section Remove the four screws 1 Carefully lift off the panel s...

Page 89: ...se plate 2 Lift off the front panel film 3 from the frame Panel interface board PC 1614 Separate the panel section from the control section as previously described Disconnect all front panel control connectors 1 from PC 1614 Remove all nuts 2 holding PC 1614 On newer units Remove all panel holders 3 Carefully lift off PC 1614 4 from the front panel base plate When the panel interface board PC 1614...

Page 90: ...the knob so that the knob pointer 4 aligns with the indication mark 5 The indication mark is a small dot or a thin guide line Tighten the nut 6 slightly Check that the knob pointer still aligns with the indication mark 2 1 300 A30X Assembling the panel section The procedure for assembling the panel section is the reverse of the disassembly procedure previously performed The following points must b...

Page 91: ...inter wings in horizontal position as shown in the illustration 300 A32X Tighten the nut 6 Tighten to approx 150 Ncm on the mode selector knob 90 Ncm on all other knobs Use the knob holder tool Order No 62 04 197 E380E when mounting the control knob Check that the knob is easy to turn If the knob is hard to turn it can be necessary to put a 0 2 mm thickness gauge 7 between the front panel film and...

Page 92: ... boards PC 1605 3 PC 1608 4 or PC 1616 5 grasp the PC board and pull it out To remove PC 1587 6 first remove PC 1608 as mentioned above When PC 1608 is removed grasp PC 1587 and pull it out Note Before exchanging COM PROMs on PC 1587 always disconnect the power supply from the battery on PC 1587 See information regarding power supply disconnection in chapter 4 Service procedures section Resetting ...

Page 93: ...l section from the control section as previously described Remove PC boards PC 1587 PC 1605 PC 1608 and PC 1616 as previously described Disconnect the two interconnection cable connectors 1 from the control unit See section Removing the inter connection cable Disconnect the loudspeaker connector 2 Remove the screws 3 and lift off PC 1617 4 3 4 2 1 300 A34X ...

Page 94: ...ling PC boards The PC boards are mounted in different types of guides Make sure that the PC boards are correctly supported by these guides The PC board connectors on the control interconnection board PC 1617 are not symmetrically mounted The connectors can be damaged if a PC board is mounted in wrong position Assembling the panel section to the control section The procedure for assembling the pane...

Page 95: ...neumatic section from the power section Place the pneumatic section on a support beside the power section Disconnect the battery connector 2 To reduce the risk of damages caused by short circuits in the power section always have the batteries disconnected when the power section is open Instead of cutting the cable ties remove the screw 3 holding the battery bracket 4 Disconnect the connectors 5 6 ...

Page 96: ...over with a cable tie Cut the cable tie if the cover must be completely removed from the power section Disconnect the cables from the mains power inlet Remove the mains power inlet 4 from the power section Transformer Separate the pneumatic section from the power section as previously described Remove the cover 1 from the mains power inlet as previously described Disconnect the transformer cables ...

Page 97: ... 2 Disconnect the Cables at screw terminal 3 Ground cable 4 This ground cable is used only in older versions It has been removed in newer versions External battery inlet connector 5 Operating time meter connector 6 Remove the nuts holding the diodes 7 and release the diodes from the screws Remove the nuts and screws holding the two auxiliary equipment outputs 8 Remove the screw 9 Remove the capaci...

Page 98: ...er section is the reverse of the disassembly procedure previously described The following points must be noted during assembling Mains power inlet Connect the cables to the mains power inlet according to figure 1 2 3 4 RD WH BK GN 300 A40X Power supply board PC 1618 Connect cables to screw terminal according to figure RD BU BK BK VT BN YE WH 300 A39X A C E B D F G H ...

Page 99: ...ery pole covers Make sure that the battery pole covers are mounted on the battery poles according to figure Assembling the pneumatic section to the power section The procedure for assembling the pneumatic section to the power section is the reverse of the separating procedure previously performed 300 C32X ...

Page 100: ...lves are factory calibrated They must not be disassem bled further than described in the Operating Manual chapter 3000 hours overhaul with complete cleaning Pneumatic section casing Remove the inspiratory and expiratory channels as described in the Operating Manual chapter 3000 hours overhaul with complete cleaning Remove the plastic cover 1 This cover is not included in newer units Pull out and t...

Page 101: ... pneumatic section casing as previously described Disconnect the flow transducer cable 1 Disconnect the O2 cell cable 2 Remove the three screws 3 Carefully lift off the cover plate 4 Expiratory valve Remove the cover plate as previously described Disconnect the two expiratory valve connectors 1 and 2 Remove the three screws 3 Lift off the expiratory valve 4 2 1 4 3 300 A44X 300 A43X 4 3 1 2 ...

Page 102: ... 1622 4 PC 1611 Exp 5 PC 1611 Insp 6 If the pressure in a pressure transducer is raised abnormally the transducer can be damaged When handling the two pressure amplifier boards PC 1611 never raise the pressure in the transdu cers by covering the hole or squeezing the silicon rubber connection piece Disconnect Interconnection cable connectors 7 8 Power supply cable connectors 9 10 Safety valve conn...

Page 103: ...oints must be noted during assembling Cover plate The silicon rubber connection pieces for the two pressure transducers must fit into the bacteria filter holders 1 and 2 on the cover plate The cover plate is equipped with a guide for PC 1622 Make sure that the PC board is supported by this guide 4 Make sure that all 8 ground springs 3 are in correct position between the pneumatic section and the p...

Page 104: ...emove the two screws 2 Slide out the cable clamp 3 from the patient unit Mounting the inter connection cable The procedure for assembling the inter connection cable to the ventilator is the reverse of the removing procedure previously performed Control unit connection Remove the two screws 1 and lift off the cover 2 Disconnect the two interconnection cable connectors 3 Remove the two screws 4 Slid...

Page 105: ... procedures Selecting the language and barometric pressure unit 104 Selecting the address code 105 Selecting the voltage setting 105 Replacing the fuses 106 Replacing the internal battery 107 Replacing the battery on PC 1587 Computer Interface 108 Resetting the trend data memory and real time clock 108 ...

Page 106: ... in chapter 3 Disassembling and assembling section Preparation Remove PC 1608 from the control unit Selecting the Alarms and messages language This illustration shows how the switches 1 2 and 3 should be set to select the different available languages Switch settings not showed in this illustration will normally give english language Selecting the barometric pressure unit This illustration shows h...

Page 107: ...ains power cable from the ventilator Open the cover 1 Remove the drum 2 turn the drum to the selected voltage and put it back in this new position Mains power voltage Selector setting 100 V 10 100 V 120 V 10 120 V 220 V 10 220 V 230 V 10 220 V see note below 240 V 10 240 V Check that the fuses F11 and F12 corres ponds with the selected mains power voltage see section Replacing the fuses in this ch...

Page 108: ...listed in the table below Fuses Purpose F1 F 6 3 A Limits the total 24 V supply current F2 F 1 6 A Controls the 24 V FUSED voltage F3 F 6 3 A Internal battery connector fuse F4 F 6 3 A External battery connector fuse Assemble the power section Fuses F11 and F12 Disconnect the mains power cable from the ventilator Open the cover 1 Pull out the fuse holders 2 Replace blown fuses with new fuses as li...

Page 109: ...atteries See also chapter 3 Disassembling and assembling for detailed disassembling and assembling instructions Disconnect and prepare the ventilator as described in chapter 3 Disassembling and assembling section Preparation Lift off the pneumatic section from the power section Remove the battery bracket Replace the batteries Both batteries must be replaced at the same time Mount the battery brack...

Page 110: ...ds and make sure that no Technical error information is shown in the Alarm and messages display Set time and date using e g a Servo Screen 390 connected to the port N82 on SV 300 Replacing the battery on PC 1587 Computer Interface Normal service interval for exchange of the battery is approx 5 years The battery backs up the trend data memory and the real time clock when the SV 300 is switched off ...

Page 111: ...5 Servo Ventilator 300 300A Troubleshooting E382 E380E 061 01 03 01 Siemens Elema AB 109 5 Troubleshooting Troubleshooting table 110 ...

Page 112: ... t c A T F P e d o c r o r r e l a c i n h c e T T R A T S E R s i m r a l A M O R P N O M e c a l p e r k c e h C s i r e h g i h r o 0 6 V M O R P N O M f i d e t a v i t c a r e w o l r o D 8 0 6 1 C P n o d e t n u o m 8 0 6 1 C P e c a l p e R 8 1 6 1 C P e c a l p e R 1 M A R e d o c r o r r e l a c i n h c e T T R A T S E R 8 0 6 1 C P n o 8 8 5 1 C P e c a l p e R 8 0 6 1 C P e c a l p e R...

Page 113: ...e d o c r o r r e l a c i n h c e T L A U N A M G N I T A R E P O E E S r o t c e l e s e g n a r t n e i t a P e c a l p e R M w S e d o c r o r r e l a c i n h c e T L A U N A M G N I T A R E P O E E S r o t c e l e s e d o M e c a l p e R C o P e d o c r o r r e l a c i n h c e T L A U N A M G N I T A R E P O E E S r e t e m o i t n e t o p V M C e c a l p e R O o P e d o c r o r r e l a c i n ...

Page 114: ...5 112 Siemens Elema AB E382 E380E 061 01 03 01 Troubleshooting Servo Ventilator 300 300A Notes ...

Page 115: ...6 Servo Ventilator 300 300A Product change history E382 E380E 061 01 03 01 Siemens Elema AB 113 6 Productchangehistory PROM PC board and Operating Manual versions 114 ...

Page 116: ...rade Optional M O R P d r a o b C P l a u n a M g n i t a r e p O d e c u d o r t n I 1 0 2 V M O R P M O C D 7 8 5 1 C P X 9 X 8 X 7 n o i s r e V 0 1 5 9 9 1 9 0 5 9 9 1 e d a r g p U 5 9 9 1 3 0 1 V M O R P N I L E A 5 1 6 1 C P F 5 1 6 1 C P X 8 X 7 n o i s r e V X 9 X 8 X 7 n o i s r e V 0 1 5 9 9 1 9 0 5 9 9 1 e d a r g p U 5 9 9 1 e d o m o t u A 6 9 9 1 2 0 4 V M O R P X I M 4 0 4 V M O R ...

Page 117: ...300A Index E382 E380E 061 01 03 01 Siemens Elema AB 115 Introduction Description of functions Disassembling and assembling Service procedures Product change history Functions Included in PC board 7 Index Alphabetic index 116 ...

Page 118: ... 95 B Backup alarm system Monitoring PC 1608 45 Bacteria filter Exp Expiratory pressure 71 Bacteria filter Insp Inspiratory pressure 70 Bacteria filter Insp valve Inspiratory valve unit Air 62 Barometer pressure transducer Monitoring PC 1608 48 Barometric pressure unit 104 Basic principles 12 Battery Computer interface PC 1587 31 108 Beeper Monitoring PC 1608 48 C Capacitor Mains power 11 76 95 Ch...

Page 119: ...xpiratory inlet with moisture trap Expiratory channel 71 Expiratory outlet with non return valve Expiratory channel 72 Expiratory pressure Pneumatic section 71 Expiratory solenoid with position sensor Expiratory valve 71 99 Expiratory valve tube Expiratory channel 72 Expiratory valve 11 74 99 External battery inlet Operating power 11 79 95 F Failure alarm box Monitoring 48 114 Flow calculator Insp...

Page 120: ...tory valve unit O2 10 67 98 Inspiratory valve unit Optional 10 67 98 Interconnection cable 8 80 102 Internal battery Operating power 11 79 93 107 L LED array Panel interface PC 1614 28 LED indicators Computer interface PC 1587 32 LED matrix Panel interface PC 1614 28 Linearizing CPU including LIN PROM functions Expiratory flow linearization PC 1615 75 85 114 Loudspeaker Monitoring PC 1608 48 91 M ...

Page 121: ...48 Opto switch Panel interface PC 1614 29 P Panel interface PC 1614 9 28 87 114 Panel section Control unit 9 25 86 Panel CPU including PAN PROM functions Panel interface PC 1614 28 85 114 Panel display Panel interface PC 1614 28 Parameter buffers Panel interface PC 1614 28 Patient range selection Front panel 25 Patient trigger Reference Timing PC 1605 59 Patient unit 10 62 93 Pause hold Front pane...

Page 122: ...spiratory channel 11 69 Serial communication ports Computer interface PC 1587 32 Sound Alarm control Monitoring PC 1608 45 Supply pressure amplifier Inspiratory valve unit Air PC 1602 64 Supply pressure transducer Inspiratory valve unit Air 63 T Transducer temperature control Expiratory flow linearization PC 1615 75 Transformer Mains power 11 76 95 V Valve code transponder Inspiratory valve unit A...

Page 123: ...input Digital code port N84 125 Interconnection cable 126 Functional block diagram 127 Only accessories supplies or auxiliary equipment listed in Siemens Elema catalogs Products and accessories Order No 90 34 562 E323E and Spare and exchange parts Order No 90 34 570 E323E must be connected to or used in conjunction with the ventilator Warning Use of accessories and auxiliary equipment other than t...

Page 124: ...ing Adult Pediatric Neonate 300 A22X 5 9 1 6 N77 1 CGND 2 24 V PO Power Out 3 Pow sup out 1 not used do not short circuit 4 Pow sup out 2 not used do not short circuit 5 CGND 6 EXP TIME H BUFF2 0 V 5 V 7 EXP PRESS BUFF2 7 5 V 100 cm H2 O 8 AIRWAY FLOW BUFF2 3 3 18 V l s 9 ADULT RANGE L BUFF2 0 V 5 V External battery inlet P67 3 pole Cannon AXR connector P67 Can be used to connect an external batte...

Page 125: ... Output reference 12 Pat trig buff H 0 V 5 V Output 13 Master pat trig H 0 V 5 V Input 14 Mon dis insp valves master buff L 0 V 5 V Output 15 Mon dis insp valves slave L 0 V 5 V Input Auxiliary output N78 15 pole D sub connector N78 Mainly used for power supply to auxiliary equipment Only Siemens connection cable must be used The illustration of the connector show outside view If a signal has thre...

Page 126: ... Input 28 Ext insp rise time set in 0 V 5 V Input 29 Ext preset min vol set in 0 V 5 V Input 30 Ext pause time set in 0 V 5 V Input 31 Ext CPAP flow set in 0 V 5 V Input To enable the control functions jumpers must be mounted in the sockets The figure below showing sockets J2 and J3 indicates which connectors that need to be short circuited with a jumper to enable a control signal Signal No as sta...

Page 127: ...5 16 17 18 19 20 21 22 23 24 25 26 Analog input Digital code port N84 44 pole D sub connector N84 Optional input interface Only Siemens connection cable must be used The illustration of the connector show outside view 300 A19X 15 44 30 1 31 16 N84 1 2 AUX GND AUX signal ground Input reference 3 AUX GND AUX signal ground Input reference 4 AUX GND AUX signal ground Input reference 5 AUX 8 10 00 V 9 ...

Page 128: ...ad 29 30 Pow sup out 1 30 31 Pow sup out 2 31 32 Pow sup out 3 32 33 Battery charging LED 33 34 34 35 Internal battery mode H 35 36 Valve code clock H 36 37 24 V low power reg 37 38 Load valve code L 38 39 Ventilator on H 39 40 Serial valve code 1 H 40 41 Power on LED 41 42 Range sel D0 42 43 Adult range L 43 44 Range sel D1 44 Connected at Connected at patient unit control unit N15 N49 Pin No Sig...

Page 129: ... PC 1608 1588 and with FAB PC 1690 N Inspiratory valve unit Optional PC 1634 or other optional PC board O Inspiratory valve unit O2 PC 1585 1586 1593 1600 1601 1602 1603 1637 P Panel interface PC 1614 1588 1632 Q R S Safety valve driver PC 1613 T Reference Timing PC 1605 1588 U Automode panel interface PC 1745 V Valve control PC 1622 W Power supply PC 1618 X Expiratory valve PC 1585 1586 4 P27 N27...

Page 130: ......

Page 131: ...ectronic mechanical photocopying recording or otherwise without the prior permission of the copyright owner in writing Subject to alterations without prior notice Issued by Siemens Elema AB Electromedical Systems Division SE 171 95 Solna Sweden Servo Ventilator 300 300A Service Manual Order No 60 26 905 E380E E382 E380E 061 01 03 02 Printed in Sweden TK 198 0501 0 05 3rd English edition August 199...

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