Anaesthesia Machine Pneumatic System 1 Pneumatic Description 2

Anaesthesia Machine Pneumatic System 1

Pneumatic Description 2

Pneumatic Description 1 Gas Supplies 3

Pneumatic Description 1 Pipeline inlets O 2 Air N 2 O 4

Pneumatic Description 1 Cylinder supplies 5

Pneumatic Description 1 Inlet Manifold 1 Same manifold for left and right machines O 2 Power outlet. Cylinder or Pipeline pressure 1 Flush regulator (13) - 131 k. Pa/19 psi 1 Pressure relief valves (6) - 883 k. Pa/128 psi 1 Ventilator Drive Gas connections (7) - Air or O 2 6

Pneumatic Description 1 Primary Gas Regulators 1 Primary regulators for cylinders 1 Check settings rear of machine for correct output 1 Pin Indexed or DIN fittings 140 micron inlet filter 1 Cylinder Contents Gauge 1 Annealed copper tubing 7

Pneumatic Description 1 On / Off switch (8) 1 Operates for O 2 and Air 1 Secondary Oxygen/Air regulators (10) (18) 1 207 k. Pa / 30 psi (approximate) 1 Pilot regulators for non life supporting gases (15) (21) 1 207 k. Pa 1 / 30 psi (approximate) Low O 2 supply pressure alarm switch (9) - (used with the ventilator) 8

Pneumatic Description 1 Flowmeter Assembly O 2 Air N 2 O CO 2 or Heliox 1 Up to four gases 1 Oxygen 1 Nitrous Oxide 1 Air 1 CO 2 or Heliox 1 Cascade Flow Tubes 150 ml and 500 ml increments 1 Chain Link 25 - (connects O 2 and N 2 O flow controls) 9

Pneumatic Description 1 Vaporizer Manifold 1 Selectatec Style - Tec 4, 5, 6 Vaporisers (25) 1 Removable port valves (24) Mixed gas 1 Pressure Relief Valve (26) 1 38 k. Pa / 5 psi 1 Non return valve 10

Pneumatic Description 1 Mixed gases from vaporizer 1 through non return valve 1 out to breathing circuit 1 Flush Control (14 a) 135 - 50 lpm 1 Flush switch (14 b) 15 psi back pressure through restrictor Flush regulator 1 Auxiliary flowmeter outlet (27) Mixed gas 11

Aestiva Anaesthesia Machine Component Removal and Identification Practical Workshop 12

Location of components 1 Locate the Primary regulators 1 Note the cylinder fitting 1 Pin Index or DIN 1 Note different styles (Piston or Diaphragm) 1 Locate the test port Piston Style 1 Gas specific Diaphragm Style 13

Location of components 1 Locate the following: 1 Inlet Manifold pressure relief valves 1 Flush Regulator 1 Ventilator Drive Gas hose Relief Valve Changing Ventilator drive gas Flush Regulator 14

Location of components 1 Locate the following 1 Pipeline and cylinder inlet filters 1 Remove refit one Cylinder filter and Cylinder 1 Remove refit one Pipeline filter and Pipeline 15

Location of components 1 Locate and remove a pipeline non- return check valve and refit 1 Service manual Section 4 Removal Refit 16

Location of components 1 Locate the following, note the routing of any tubing 1 Cylinder Contents and Pipeline pressure Gauges 1 Remove one gauge and refit 1 Service Manual (Anaesthesia Machine) Section 4 17

Location of components 1 Auxiliary flowmeter outlet and Integrated Suction 1 Remove assembly if option fitted 1 Service Manual (Anaesthesia Machine) Section 4 18

Location of components 1 Locate secondary regulators 1 Observe tubing arrangement 1 Locate O 2 supply pressure switch Secondary Regulators 19

Location of components 1 Refer to Service Manual (Anaesthesia Machine) 1 Remove the flowmeter assembly 1 Section 4 1 Remove the Air or fourth gas flowmeter block 1 Section 4 1 Remove Flowtubes 1 Section 4 1 Note gas specific Indexing 1 Remove filters and floats 20

Location of components 1 Locate Selectatec Vaporizer Manifold 1 Remove one port valve 1 Examine seals, O rings and order of assembly 1 Refit port valve 1 Section 4 21

Location of components 1 Remove examine and refit check valve assembly 1 Section 4 22

Location of components 1 Common Gas Outlet Manifold 1 Locate, remove, examine and refit the CGO manifold 1 Observe the location of the O 2 flush sensing switch 1 Section 4 23

Absorber Assembly Description, Disassembly and Re-assembly Reference : Operation Manual - Setup, Cleaning, Maintenance 24

Absorber Assembly 1 Adjustable position 1 Ventilator components 1 Bellows, Breathing Circuit, Vent Engine and Exhalation Valve 1 Cover Panel 1 Airway Pressure gauge, APL Valve, Bag/Vent control and Bag Arm 25

Absorber Assembly 1 Patient Circuit 1 Uni-directional valves 1 Flow sensors 1 O 2 monitoring 1 Auxiliary Common Gas Outlet 1 Absorber canisters 11. 35 kg each canister 1 Scavenge system 26

Absorber Assembly 1 Disassembly 1 Section 2 1 Lower front panel 1 Flow sensors 1 O 2 Sensor 1 Patient circuit 1 Remove Bag Arm 1 Lift Cover panel 1 Bellows assembly 1 Main manifold 1 Exhalation Valve 27

Absorber Assembly 1 Disassembly 1 Section 2 1 Lower canisters 1 Canisters 1 Top dish 1 Bottom dish 1 Scavenge tube 1 Rear cover 1 Scavenge reservoir 28

Absorber Assembly 1 Further Disassembly 1 Section 4 1 Bellows 11 -Bellows housing 12 -Bellows 13 -Rim 14 -Pop Off valve 15 -Latch 16 -U cup seal 17 -base 29

Absorber Assembly 1 Further Disassembly 1 Section 4 1 Flow Sensors 1 Flow sensor cover 1 Flow sensor holder 1 Flow sensors 30

Absorber Assembly 1 Further Disassembly 1 Section 4 1 Breathing Circuit 1 Circle, Bain, Open 1 Uni-directional valve 1 Silicon rubber seals 31

Absorber Assembly 1 Further Disassembly 1 Section 4 1 Main manifold 1 APL Valve 1 Top, Middle and Lower sections 1 Silicon rubber seals 32

Absorber Assembly 1 Further Disassembly 1 Section 4 1 Exhalation Valve 1 Pop Off valve tube 1 Valve cover 1 Locking ring 1 Valve seat 1 Diaphragm 1 Base 33

Absorber Assembly 1 Further Disassembly 1 Section 2 1 Upper dish 1 Canisters 1 Lower dish 1 Corrugated tube 1 Release mechanism 1(Scavenge transfer tube) 34

Absorber Assembly Gas Path Service Manual (Anaesthesia Machine) Section 2 35

Gas Path Bag mode - Inspiration 1 Bag, bag arm 1 Main manifold 1 Circuit module 1 Main manifold 1 Absorbent 1 Main manifold 1 Circuit module 1 Out to patient 36

Gas Path Bag mode - Expiration 1 Circuit module 1 Main manifold 1 Bag arm - Bag 37

Gas Path Bag mode - APL Valve 1 Over pressure causes disc to lift and gas to scavenge 1 Main manifold 1 APL valve disc 1 Scavenge 38

Gas Path Vent Mode - Inspiration 1 Ventilator bellows 1 Main manifold 1 Circuit module 1 Main manifold 1 Absorbent 1 Main manifold 1 Circuit module 1 Out to patient 39

Gas Path Vent mode - Expiration 1 Circuit module 1 Main manifold 1 Ventilator bellows 40

Gas Path Vent mode - Pop Off valve 1 Inside bellows 1 Lifts at 2. 5 cm. H 2 O 1 Gases to scavenge 41