Technical Reference Manual - Frank's Hospital Workshop

1 Aestiva Anesthesia Machine Technical Reference Manual Aestiva 09/06 1006-0452-000 Datex-Ohmeda products have unit serial numbers with coded logic which indicates a product group code, the year of manufacture, and a sequential unit number for identification. The serial number can be in one of two formats. Aestiva , SmartVent , and Link-25 are registered trademarks of Datex-Ohmeda brand names or product names used in this Manual are trademarks or registered trademarks of their respective holders. AAA X 11111A A A XX 111111 A AThe X represents an alpha character indicating the year the product was manufactured; H = 2004, J = 2005, etc. IIII and O are not XX represents a number indicating the year the product was manufactured; 04 = 2004, 05 = 2005, etc. Technical Reference Manual 1006-0452-000 09/06 i This document is not to be reproduced in any manner, nor are the contents to be disclosed to anyone, without the express authorization of the product service department, Datex-Ohmeda, Ohmeda Drive, PO Box 7550, Madison, Wisconsin, 53707.

2 2006 Datex-Ohmeda Anesthesia Machine Aestiva ii 09/06 1006-0452-000 Important The information contained in this Technical Reference Manual pertains only to those models of products which are marketed by Datex-Ohmeda as of the effective date of this Manual or the latest revision thereof. This Technical Reference Manual was prepared for exclusive use by Datex-Ohmeda service personnel in light of their training and experience as well as the availability to them of parts, proper tools and test equipment. Consequently, Datex-Ohmeda provides this Technical Reference Manual to its customers purely as a business convenience and for the customer's general information only without warranty of the results with respect to any application of such information. Furthermore, because of the wide variety of circumstances under which maintenance and repair activities may be performed and the unique nature of each individual's own experience, capacity, and qualifications, the fact that customer has received such information from Datex-Ohmeda does not imply in anyway that Datex-Ohmeda deems said individual to be qualified to perform any such maintenance or repair service.

3 Moreover, it should not be assumed that every acceptable test and safety procedure or method, precaution, tool, equipment or device is referred to within, or that abnormal or unusual circumstances, may not warrant or suggest different or additional procedures or Manual is subject to periodic review, update and revision. Customers are cautioned to obtain and consult the latest revision before undertaking any service of the equipment. Comments and suggestions on this Manual are invited from our customers. Send your comments and suggestions to the Manager of Technical Communications, Datex-Ohmeda, Ohmeda Drive, PO Box 7550, Madison, Wisconsin CAUTION Servicing of this product in accordance with this Technical Reference Manual should never be undertaken in the absence of proper tools, test equipment and the most recent revision to this service Manual which is clearly and thoroughly understood.

4 Technical Competence The procedures described in this Technical Reference Manual should be performed by trained and authorized personnel only. Maintenance should only be undertaken by competent individuals who have a general knowledge of and experience with devices of this nature. No repairs should ever be undertaken or attempted by anyone not having such strongly recommends using only genuine replacement parts, manufactured or sold by Datex-Ohmeda for all repair parts completely through each step in every procedure before starting the procedure; any exceptions may result in a failure to properly and safely complete the attempted procedure. 1006-0452-000 09/06 iii Table of Contents Important .. ii Technical Competence .. ii 1 Introduction What this Manual includes .. Standard service procedures.

5 Operation manuals .. Service manuals .. What is an Aestiva .. Configuration options .. Symbols used in the Manual or on the equipment ..1-8 Aestiva Anesthesia Machine iv 09/06 1006-0452-000 2 Theory of Operation Theory overview .. Gas flow through the anesthesia machine .. Overview .. Physical connections .. Induction machine .. Wall-rail mount machine .. System switch .. Flow control .. Flow through the breathing system .. Overview of flow paths .. Manual ventilation Circle Module.. Mechanical ventilation Circle Module .. Fresh gas flow .. Different breathing circuit modules .. CO 2 Bypass .. Auxiliary Common Gas Outlet (ACGO) .. Electrical and pneumatic signals .. Summary of signals .. Subfloor tubing and wiring connections.

6 Breathing circuit module ID .. Control panel switches .. Canister switch .. Ventilator monitoring and control .. Summary of ventilator function .. Volume Mode .. Pressure Mode .. PEEP .. O2 Monitoring .. Volume Monitoring .. Volume Compensation .. Pressure Waveform .. 2-36 Table of Contents 1006-0452-000 09/06 v 3 Checkout Procedure Inspect the system .. Electrical safety tests .. Power failure test .. Minimize alarms (optional) .. Pipeline and cylinder tests .. Flow control and pressure relief tests .. Vaporizer back pressure test .. Flow sensor check .. Low-pressure leak test .. Alarm tests .. Breathing system tests .. Auxiliary O 2 flowmeter tests .. Integrated Suction Regulator tests .. 3-21 4 Repair Procedures Servicing the ventilator.

7 How to bleed gas pressure from the machine .. How to remove the rear panel .. How to remove the side panels .. Service the pipeline inlet (pneumatic) manifold .. Remove pneumatic manifold .. Replace pipeline inlet fitting .. Replace pipeline inlet filter .. Replace pipeline inlet check valve .. Replace pneumatic O 2 power outlet .. Rebuild flush regulator .. Replace high-pressure relief valve .. Change drive gas .. Service the cylinder supply modules .. Tightening procedure for high-pressure tube fittings .. Replace primary regulator module (complete replacement) .. Replace cylinder inlet filter .. Replace cylinder check valve .. Replace 4th- and 5th-gas cylinder supply module .. Service pipeline and cylinder pressure gauges .. Remove gauge panel.

8 Replace pipeline or cylinder pressure gauges .. Replace system switch assembly .. 4-21 Aestiva Anesthesia Machine vi 09/06 1006-0452-000 Service the flowmeter module .. Remove front flowmeter panel shield .. Remove flowtubes for cleaning or replacement .. Remove complete flowmeter head .. Replace flowmeter modules .. Replace flowmeter frame .. Replace O 2 supply switch .. Checkout procedure for O 2 supply switch .. Replace secondary regulator manifold or balance regulator manifold .. Replace O 2 or N 2 O needle valves .. Replace 3rd or 4th gas needle valves .. Service vaporizer manifold parts .. Repair manifold port valve .. Checkout procedure for manifold port valve .. Replace vaporizer manifold check valve .. Replace vaporizer pressure relief valve.

9 Replace vaporizer manifold (complete replacement) .. Service common gas manifold .. Replace common gas manifold .. Replace common gas manifold check valve .. Replace O 2 flush switch .. Service the breathing system .. Replace control panel cover .. Replace control panel microswitch .. Replace Bag-to-Vent toggle or microswitch .. Replace adjustable pressure limiting (APL) knob assembly .. Replace APL disc or cage .. Replace airway pressure gauge .. Remove or replace canister and dishes .. Replace breathing system canister release handle and release mechanism . Replace canister microswitch .. Remove the front and rear subfloors and the bulkhead cover .. Replace circuit module identification printed circuit board (ID PCB) .. Replace common gas outlet (CGO) assembly.

10 Remove the bulkhead .. Replace ACGO or ACGO microswitch .. Disassemble ACGO to replace seals .. Replace sensor interface board (SIB) .. CO2 Bypass repair procedures .. Disassembly .. Replacement Procedure .. Assembly .. 4-70 Table of Contents 1006-0452-000 09/06 vii Service the breathing system with an articulating arm .. Removing the rear panel .. Latch adjustment .. Check/adjust tension of absorber arm .. Remove or replace drawer slides .. Replace drawer lock assembly .. Remove or replace lower shelves .. Replace side panel for drawer enclosure .. Replace O 2 Flush components .. Replace O 2 flush button .. Replace O 2 flush valve block .. Replace auxiliary flowmeter or suction regulator .. Repair or replace display arm.