acm619 service manual (s)

8/2/2019 Acm619 Service Manual (s)

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ACM619 Service Manual

I ACM619 Anesthetic Workstation

AIR

AIRN2O

N2OO2

O2

CYLINDER

AIRN2O AIR

CYLINDER

N2O

CYLINDER

O2

PIPE LINEPIPE LINE

kPax100kPax100kPax100kPax100kPax100kPax100

PIPE LINE

O2

PCV

IPPV

O2+

O2 PpeakkPa

f/min

PEEPkPa

MVL

0

%

1

VOL5

4

3

0

VOL%

4

5

2

13

2

300

600

900

1200

1500

Fig.6102535 Front1


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II Gas Part

1 Operation Principle


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1. O2 CylinderOptional 2.O2 Pipeline 3.N2O CylinderOptional 4.N2O Pipeline 5.AIR

CylinderOptional6.AIR Pipeline 7 Pressure gauge0-1000kPa 8 Pressure gauge0-25000kPa

9. pressure regulatoroutput 400kPa10. pressure regulatoroutput 400kPa 11. pressure regulatoroutput

400kPa 12 filter 13. unidirectional valve 14. relief valve840kPa 15. alarm shift valve

120kPa-200kPa 16. alarm 17. gas storage cylinder

18. pressure reducing I valveoutput 270kPa 19. N2O driven regulate valve 20. ventilator pressure reducing I

valve

Output 25010kPa21. proportion valve 22. electromagnetic valve 23. ventilator pressure reducing II valve

output 505kPa 24. expiration unidirectional valve 25. atmosphere 26. relief valve6kPa 27. linage

flowmeter (0.1-2L/min;2.5-10L/min) 28. support circuit 29. evaporator0.2%-5% 30. relief valve38kPa

31. O2 flush valve (25L/min-75L/min) 32. Venturi valve33. Inspiration unidirectional valve 34. Expiration

unidirectional valve 35.O2 concentration sensor 36.flow sensor 37. pressure sample interface 38.

patient 39. absorber1000mL2 40. manual/ mechanical ventilator control 41. APL valve

0-6.5kpa 42.30mm exhaust outlet 43. Manual bag 44. Bellows 45. relief valve (0.2kPa-0.3kPa)

46.30mm exhaust outlet

Operation Principle compendium

ACM619 Anesthesia Machine has O2, N2O and Air three gases and according to CE

standards, it has two air supply ways, Serial number is 135 is the Cylinder inlet(back-up),

and the serial number246 is the Pipeline inlet (common usage), the pressure ofPipeline gas

should set as 280kPa~ 600kPa.After the gas into the machine, it will be through the filter (12)

to be filtrated the impurities and grains, and the Pressure gauge (78)will display the gas pressure,

cylinder gas1,3,5is reduced to 400 kpa bypressure regulator(9,10,11), connecting with the relief

valve(14), then paralleling with the pipeline gas by unidirectional valve (13)

The gas supply failure alarm system is made of alarm shift valve for oxygen15,alarm

unit (16) , gas storage cylinder(17) and unidirectional valve(13), When the gas pressure is higher than

200 kPa, the gas will be through the unidirectional valve (13) into the gas storage cylinder(17), until

the gas storage cylinders pressure is the same with the gas pressure. If the pressure controlled shift valve

(broken line) is on the position 1(left), the gas is closed. When the gas pressure is less than 200kpa, the

pressure controlled (broken line) shift valve is on the position 2(right), the gas of the gas storage cylinder

flows through the shift valve and blows the alarm unit. The alarm time is not less than 7 seconds.

one part of the O2 gas enters into the ventilator, then through the primary pressure reducing

valve I (20), reducing the pressure to 25010kPa, the main gas enters into the

bellows(44)through proportion valve(21) to supply dynamic for breathing. The auxiliary gas

passes through electromagnetic valve (22) and secondary pressure reducing valve (23) , enters into

expiration valve (24), meanwhile, the expiration valve connects with atmosphere (25) and relief valve

(26). When inspiration, ventilator controls the proportion valve (21), and turns on in accordance with the

set tidal volume, at the same time the electromagnetic valve (22) is connecting, and the gas pressure is

reduced to 505kPa through the secondary pressure reducing valve. The controlling

expiration valve 24 is closed, the main gas is separated with the atmosphere and the driven

gas is produced to press bellows to inspiriting. When expiration, proportion valve is closed,


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meanwhile, electromagnetic valve (22) is closed, too. The gas from auxiliary gas channel is released by

electromagnetic valve, then expiration unidirectional valve opens, the driven gas is released to

atmosphere by expiration unidirectional valve. If accident happens during inspiration, say, too much gas

supply, pressure increasing, in order to protect the patient, relief valve 26 can automatically open to

reduce the pressure when pressure grows to 5.5~6kPa.

O2 is reduced to 270kPa by primary pressure reducer 18 and enters into the linkage

flowmeter (27). At the same time, the pressure reduced O2 controls the N2Os in an out by N2O driven

adjusting valve. When the O2 pressure is lower than 200kPa~120kPa, N2O is cut off; when the O2

pressure is higher than 200kPa~120kPa, the N2O enters into the linkage flowmeter (27). And the air

source also enters into the linkage flowmeter(27) by primary pressure reducing valve (18)

The pressure reduced O2, N2O, Air is mixed in the linkage flowmeter 27, then passes

through by-pass valve (28) and enters into the vaporizer; after mixing with the anesthestic agent in

accordance with the set proportion, the mixed gas enters into the circle absorber through Venturi valve(32)

(it is consisted of the elements from 33 to 43). At the same time, the pressure reduced O2

also enters into the Venturi valve by O2 flush valve (31), and then into the circle absorber.

The working procedures of the circle absorber (it is consisted of the elements from 33

to 43).

Setting the switch of Manual/ mechanical to mechanical, and the ventilator works to

pressure the bellows to let the gas entering into the circle absorber, and then this gas passes

to the patient 38 through unidirectional valve (33). when expiration, pressure of bellows releases,

pressure of patient lung release CO2 by expiration unidirectional valve (34) and make a chemical reaction

with sodalime which is in the absorber (39). if the too much gas compensation quantity or other reasons

cause the end expiratory pressure higher than the set pressure of spill valve 0.2 kPa ~0.3 kPa, the

spill valve opens to release the gas Setting the switch of Manual/ mechanical to manual,

anaesthetist uses the manual bag to supply gas to patient, and make the gas exchange.At the

same time, in order to protect the patient, you should set the safety pressure of APL valve.

When the pressure is higher than the set value, exhaust gas will be exhausted from exhaust

outlet (42)

2 Common Malfunction1Circle absorber leakage

First to test the vaporizers connecting to see whether it leaks.


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Checking the leakage of circle absorber

Under the manual condition, using a silicone tube to connect the inspiratory outlet andexpiratory outlet.

Opening the flow meter slowly to increase of the pressure of the absorbers gauge to 3KPa,

then close the flow meter


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Observing the pressure gauge for 2~3 minutes. If the indicator of the pressure gauge doesnt

drop, it expresses that the circle absorber doesnt leak. Testing the folding bag and spill

valve of the bellows assembly, ff the circle absorber leaks, please check whether the

absorber is tightened.

2Spill valves adjustmentDissembling the bellows assembly


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Unscrew the three screws and take down the cover, adjust the place of the pressure nut to change the

pressure value.

Rotatethe nut anticlockwise to increase the spill valves pressure value; rotate nut clockwise to reduce

the pressure value. After adjustment, assemble the bellows again. After the machine works well, observe

the airwaypressure gauge on the circle absorber, and the end-expiratory pressure should be 0.2~0.3KPa.

Screw

Pressure adjustment

nut


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Electric Part

1.Operation Principle

Anesthesia machine wiring diagram


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ib. diagram, the left side power supply220V or 110V via X1entrance ventilator, through magnetism ring L1, L1

for shield interfere comes from of power supply. Live wire (L), Null Line (N), in series 8amp. fuses, connect with

switch S1, earth wire(E) connect with the machine shell. From of S1 lead two line, L and N. One joint 2A slow fuse

via capacitance C1, C2 which fixed on the machine shell connect with the switch U1, the another one joint 2A quick

fuse connect X2, X3, X4 together with E which one on the shell.

Power switch U1 output two wires, Earth wire GND and 24V, connect with electrical outlet X2 on the control board

A1.

Control board A1

Electrical outlet X7 output 5 lines, D shape outlet which designed for signal interference shielding, two for oxygen

concentration, two for manual switch, five for coupler test board.

Oxygen concentration Manual switch Coupler test board

1 2 1 2 1 2 3 4 5

GND Signal GND +5V Signal Signal Signal GND

Electrical outlet X8, three lines connect to buzzer board.

1 2 3

+5V GND Control board

Electrical outlet 5, connect to Proportional Valve Controller:

1 2 3 4

Control board GND +12V +24V

Gray Black Red Purple

Proportional valve controller output:

Black Red

On-off +12V

Electrical outlet 4, connect to electromagnetic valve

1 2

Control board +12V

Electrical outlet X11, 26 core cable connect to the LED display board A2.

1 2 3 4 5 6

+5V +5V GND GND PVC setting VCV setting

7 8 9 10

Inspiration pressure setting I:E setting Respiratory rate setting TV setting

11 12 13 14

Confirm button Optical encoder OC1 Optical encoder OC2 Display board D2 Chip

select signal

15 16 17 18

VCV Lights Display Board D1 Chip

select signal

PCV Light SCLOCK Bus signal


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19

SDA Bus signal

Line 20~26 Empty.

Electrical outlet X6

1 2 3GND D1 Serial ports TXD end D1 Serial ports TXD end


1 2 3 4 5 6 7

-12V Empty Empty DGND 5VD EGND 12V


1 2 3 4

GND Pressure analog output Flow analogy signal output Flow analogy signal

output

LCD Display

LED Display board A2

12V Input

Inverter

High-voltage output

Cable connected to upper board.

26 core cable X2 connect with A1X1

6 core cable X3 connect with shuttle button.

10 core X2 connect with upper board X4

Connect with the membrane board


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Electrical outlet X36 core

1 2 3 4 5 6

GND Confirm button GND shuttle button OC1 shuttle button OC2 +5V

Electrical outlet X2 connect with electronic board electrical outlet X4 (10 core)

1 2 3 4 5STBY Indicator light STBY MENU Mute RESET

setting setting setting setting

6 7 8 9 10

LCD display setting Confirm Shuttle button OC1setting Shuttle button OC2 setting GND

Electrical outlet X4 (19 core)

1 2 3 4 5

STBY Indicator light STBY setting MENU setting Mute setting RESET setting

6 7 8 9 10

LCD display setting TV Setting Respiratory rate Setting I:E Setting Inspiration pressure setting

11 12 13 14 15

PCV function IPPV function PCV indicator light IPPV indicator light Empty

16 17 18 19

Empty Empty GND GND

Electronic board

Electrical outlet X6, serial interface, used for machine debugging.

The others tie-in please refers to the circuit board instructions.


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2Parts testingProportional valve

Yellow/Yellow Yellow-green/Yellow together put in the right side jack.

Down

Up

ENTER

1Connected proportional valve and the controller as the indication above;2Turn on ventilator, long press ENTER for 5 seconds to enter setup menu;3Into the INP (input) menu, by pressing the down button to INP = 0 ~ 5V, the display interface to the END option,

press ENTER exit.

4Into the OUT (output) menu, then enter the UALU (body type) menu, by pressing the down button to set to 2833,the display interface to the END option, press ENTER exit;

5Into the OUT (output) menu, then enter the ADJ (adjust coil) menu, by pressing the down button to LO (low) =250mA, so that HI (high) = 400mA, the display interface to the END option, press ENTER exit;

6Into the CUT (screen) menu, by pressing the down button to make CUT value = 0, the display section to the CUToption, press ENTER exit;

7Into the CUT (screen) menu, by pressing the down button to make CUT value = 0, the display section to the CUToption, press ENTER exit;

8Other menu options do not do changeThe display interface to the END option, press ENTER to return control window.

Pressure settings:

Preheated for 5 minutes after boot, anesthesia machine work for the state, anesthesia ventilator control panel DIP

switch S1, 4,3,2 segment is set to on, 1 is set to off, then anesthesia ventilator tidal volume window adjusted value for

the pressure, the digital pressure gauge to the pressure sampling port, debug as follows:

1) To the pressure sampling port on the air, anesthesia ventilator display 2.00 ~ 2.02, or adjust control panel

potentiometer R4;


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2) Measurement of the container through the sampling port pressure to 7kPa, anesthesia ventilator showed a value of

8.98 ~ 9.02, or adjust control panel board potentiometer R3;

Repeatedly adjust R3, R4, to meet the requirements of airway pressure display.

Adjustment is completed, the control panel DIP switch S1 of a segment set to on.

3Fault:Tidal volume are not accurate (gas line problem need to exclusion before electrical test) as a pressure sensor,

two pressure sampling tubes often stagnant water, pressure will affect the transmission of tidal volume are

not accurate, so first check whether the sampling tube does have water, and clear it. Analysis carried out

after confirmation.

Three problems lead the Tidal volume not accurate: 1) pressure sensor failure; 2) the proportional valve

controllers problem; 3) The proportional valve is not working properly;

Pressure sensor test:

N12

After the boot to be working properly, measuring 3 feet N12 voltage, consistent with Table 1, differential pressure

sensor to determine the normal sampling:


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No. TVml Voltagemax

1 250 2.53

2 350 2.71

3 500 2.87

4 650 2.95

5 800 3.046 1000 3.14

Table 1

Proportional Valve Controller Detection:

Output current value

Measure input voltage

Start working properly, set the different tidal volume, simultaneous detection of the input voltage proportional valve

controller, the controller shows the current value of observation, compared with, if found in the following table (Table

2), the control panel (A1) and proportional valve is working properly.

No. TV Input Voltage Current mA

1 250 1.58 298

2 350 1.84 305

3 500 2.21 316

4 650 2.56 327

5 800 2.95 338

6 1000 3.55 355

Table 2

Black screen, black screen of Death;2.Check the back of LCD panels before and after the 220V inverter and +12 V, power supply socket X1 PC board

situation.

3. membrane board key failure:First test the use of all buttons, the screen is normal operation; further determined that under fault phenomenon

mask the problem, the PC and control board failures.

PC board controls: buttons, "home screen", "menu", "confirm", "", "", "STBY", "Mute 2min", "reset." All

screen display.

Control Panel Control: Key "PVC", "VCV", "suction pressure", "smoking calls more than", "respiratory rate",

"tidal volume", "confirm."

By checking the LED display X2, X4, X1 socket, to confirm cause of the malfunction.

acm619 service manual (s)

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