Technical Service Manual
118 Pages
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Graseby 3500 A n æ s t h e s i a Syr inge Pump
Te c h n i c a l S e r v i c e Manual 0473
Part Number 00SM-0138-4 August 2004 © 2004 Smiths Medical International Ltd
Address
Smiths Medical International Ltd.
Published by Smiths Medical InternationalLimited. All possible care has been taken in the preparation of this publication, but Smiths Medical InternationalLimited accepts no liability for any inaccuracies that may be found. Smiths Medical reserves the right to make changes without notice both to this publication and to the product which it describes. Copyright © Smiths Medical International Limited 2004 No part of this publication may be reproduced, transmitted, transcribed, or stored in a retrieval system or translated into any human or computer language in any form by any means without the prior permission of Smiths Medical International Limited.
SMITHS MEDICAL INTERNATIONAL LIMITED, Colonial Way, Watford, Hertfordshire, United Kingdom, WD24 4LG Telephone: Fax:
(+44) (0)1923 246434 (+44) (0)1923 231595 http://www.smiths-medical.com
Registered in England Company number 362847.
Trademarks and acknowledgements 'Graseby'; 'Smiths' and 'Flo-Safer' are all trademarks of Smiths Group plc 'DiprifusorTM' (Target Controlled Infusion...TCI, Software/ Subsystem/System) and the stylized D with arrow logo are trademarks, the property of Zeneca Limited. The Zeneca PFS is used for the infusion of the drug ‘Diprivan’(D).
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Issue record
Smiths Medical International Ltd.
ISSUE RECORD Reason for change
Pages affected
Date
1
Initial issues
All
Jan. 97
1.1
To incorporate changes
Various
Sept. 97
Reissue
All
Dec. 99
3
Reissue
All
July 00
3.1
Amendment to three pages
ii, xii and 5-10
August 00
3.2
Amendment to two pages
ii, 7-16
Feb. 01
4
Reissue, including Computer Interface Protocol
All
June 04
Issue No.
2
Page ii
.
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Contents
Smiths Medical International Ltd. CONTENTS
Page General ... xi Different versions of pump ... xi Warnings and Cautions ... xii Abbreviations ... xv Zeneca Trademark ... xv CHAPTER 1 INTRODUCTION, FEATURES, CLASSIFICATION and SPECIFICATION Introduction ... 1-1 MCI only pump ... 1-1 MCI plus TCI pump ... 1-1 MCI operation ... 1-1 General information ... 1-2 Features ... 1-4 Classification ... 1-4 Specification ... 1-5 Brief history of Graseby bedside syringe pumps ... 1-6 CHAPTER 2 CONFIGURATION MODE, DIAGNOSTICS MODE, and THRUST ADJUSTMENTS Configuration mode Enter the Configuration mode ... 2-1 Select an option ... 2-1 Move to the next parameter ... 2-2 Configuration parameters and options that are available ... 2-2 Language ... 2-2 Key beep ... 2-2 LCD contrast ... 2-2 RS232 baud rate ... 2-2 Mode ... 2-2 Syringe brands ... 2-2 Bolus beep ... 2-2 Preset bolus ... 2-2 Mass units ... 2-2 Max infusion rate ... 2-3 Diagnostic mode ... 2-4 Calling up the Diagnostic mode ... 2-4 Moving to the next parameter ... 2-5 Diagnostic displays ... 2-5 Exiting from the diagnostic mode ... 2-5 Disassembly and reassembly of casing ... 2-6 Separating the casing ... 2-6 Reassembly ... 2-6
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Contents
Smiths Medical International Ltd.
LIST OF CONTENTS (contd) CHAPTER 2 (contd) Page Occlusion measurements ... 2-7 Thrust measurements ... 2-7 Syringe stiction ... 2-7 Thrust checks ... 2-7 Thrust adjustments ... 2-8 CHAPTER 3 FUNCTIONAL DESCRIPTIONS Introduction ... 3-1 Drive system ... 3-1 DC motor and leadscrew ... 3-1 Processor ... 3-1 Toggle mechanism ... 3-1 Plunger clamp ... 3-1 Occlusion sensing system ... 3-2 Clutch assembly and opto-sensor ... 3-2 Occlusion detection ... 3-2 Electro/ mechanical control system ... 3-2 Motor speed ... 3-2 Motor rotation ... 3-2 Mechanical characteristics ... 3-2 Sensing (alarm) systems ... 3-3 Introduction ... 3-3 Syringe nearly empty ... 3-3 End of infusion/ occlusion ... 3-3 AC power failure ... 3-3 Battery voltage low ... 3-3 Self tests, pump malfunction ... 3-3 Drive disengaged, or syringe not fitted ... 3-3 Syringe sizing system ... 3-3 Software ... 3-4 Design methods ... 3-4 Self tests ... 3-4
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Contents
Smiths Medical International Ltd.
LIST OF CONTENTS (contd) CHAPTER 4 CIRCUIT DESCRIPTIONS Introduction ... 4-1 Main board circuit ... 4-2 Sub-circuits ... 4-2 Processor core circuit ... 4-2 Description ... 4-2 Motor interface circuit ... 4-3 Introduction ... 4-3 Motor current control ... 4-3 Transients; suppression... 4-3 Motor speed control ... 4-3 Power control circuit... 4-4 Logic circuit supply; Vcc ... 4-4 RAM and clock supply ... 4-4 Sensors interface circuit ... 4-4 Introduction ... 4-4 Circuit description ... 4-4 RS232 Interface circuit ... 4-5 Circuit description ... 4-5 TCI module interface ... 4-6 Introduction ... 4-6 Circuit description ...4-6 Input/ Output interface ... 4-7 Front panel interface ... 4-7 LED illumination ...4-7 Real time clock ... 4-7 Liquid crystal display ... 4-7 Sounder ...4-8 Regulator board ... 4-8 Introduction ... 4-8 Live circuit and T1 primary description ... 4-8 T1 secondary ... 4-9 Batteries circuit ... 4-9 Overvoltage protection ... 4-9 Plug PL11 outputs ... 4-9 Setting RV1 ...4-9
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Contents
Smiths Medical International Ltd.
LIST OF CONTENTS (contd) CHAPTER 4 (contd)
Page
Size sensors and board ... 4-10 Opto sensors and board ... 4-10 Distribution board connections ... 4-11 Umbilical cable connector ... 4-11 CHAPTER 5 FAULT CODES, CLEANING and REPAIRS Fault codes ... 5-1 Cleaning the pump ... 5-3 Repair procedures ... 5-3 Introduction ... 5-3 Fuse renewal ... 5-3 Regulator board renewal ... 5-4 Main board renewal ... 5-4 Displacement of the Distribution board tray ... 5-4 Distribution board renewal ... 5-5 Opto sensors board renewal ... 5-5 Plunger clamp and half nut assembly renewal ... 5-5 Pole clamp renewal ... 5-6 Leadscrew assembly renewal ... 5-6 Removal ... 5-6 Renewal ... 5-7 Releasing the spring pressure ... 5-7 Case assembly and checks ... 5-7 Motor and gearbox assembly renewal ... 5-7 Occlusion clutch and disc assembly renewal ... 5-7 Membrane switch panel renewal ... 5-8 Super nut renewal ... 5-8 Syringe size sensor board renewal ... 5-9 Plunger clamp repair ... 5-10 Batteries. Checks and replacement ... 5-10 Front and/ or rear case repair ... 5-11
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Contents
Smiths Medical International Ltd. LIST OF CONTENTS (contd) CHAPTER 6
Page
FUNCTIONAL TESTS ... 6-1 Introduction ... 6-1 Plunger clamp alarm checks ... 6-5 Ramp check procedures ... 6-5 Linear accuracy ... 6-6 Test procedures ... 6-6 Plunger clamp alignment ... 6-6 Test procedures ... 6-6 CHAPTER 7 COMPUTER INTERFACE PROTOCOL Syringe conversion procedures ... 7-1 Hardware ... 7-1 Protocol ... 7-1 Message packeting ... 7-1 Message text format ... 7-2 Acknowledgement codes ... 7-2 Status codes ... 7-2 Message codes . ... 7-3 Get total message ... 7-5 CHAPTER 8 ILLUSTRATED PARTS LISTS Figure 8.1 General assembly ... 8-1 Figure 8.2 Plunger clamp and super nut assemblies ... 8-8 Figure 8.3a Pole clamp assembly: non-rotating ... 8-9 Figure 8.3b Pole clamp assembly: rotating ... 8-10 Figure 8.4 Leadscrew assembly ... 8-11 Figure 8.5 Main board assembly ... 8-12 Figure 8.6 Regulator board assembly ... 8-14
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Contents
Smiths Medical International Ltd.
LIST OF CONTENTS (contd) Page CHAPTER 9 BRAUN PERFUSOR CONVERSION Syringe conversion procedures (non-TCI pump only) ... 9-1 Introduction ... 9-1 Nearly empty flag conversion ... 9-1 Spacer tube fitment ... 9-1 Plunger clamp plate fitment ... 9-1 Braun Perfusor selection ... 9-1 'P' label fitment ... 9-1 Reselecting ‘various’ syringe brands Mechanical procedures ... 9-2 Programming procedures ... 9-2 APPENDIX FITTING a NEW MODIFIED SIZE SENSOR FLAG ... A-1 Introduction ... A-1 Warnings ... A-2 Cautions ... A-2 Opening the case ... A-2 Removal of old SSF ... A-2 Reassembly ... A-3 Final testing ... A-3 Setting the size sensor flag ... A-4
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Figures
Smiths Medical International Ltd.
LIST OF FIGURES Figure Caption
Page
1.1
Front view of the ‘MCI only’ 3500 pump ... 1-3
1.2
Front view of the ‘MCI plus TCI’ 3500 pump ... 1-3
2.1 2.2
Case fixing screw tightening order ... 2-6 Thrust measuring set up ... 2-8
4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18
Overall block diagram of the 3500 system ... 4-12 Main board block diagram ... 4-13 Processor core circuit diagram ... 4-14 Motor interface circuit diagram ... 4-15 Power control circuit diagram ... 4-16 Sensors interface circuit diagram ... 4-17 Communications (RS232) circuit diagram ... 4-18 TCI module interface circuit diagram ... 4-19 Main board input/output circuit diagram ... 4-20 Umbilical cable connections diagram ... 4-21 Distribution board connections diagram ... 4-22 Regulator circuit diagram (overview) ... 4-23 Regulator live (primary) circuit diagram ... 4-24 Regulator isolated (secondary) circuit diagram ... 4-25 Syringe size sensors circuit diagram ... 4-26 Opto sensors circuit diagram ... 4-26 Membrane switch panel circuit ... 4-27 Internal ribbon cable and ‘D’ connector connections ... 4-28
5.1 5.2
Half nut (obsolete)/ Super nut ... 5-8 Strengthened front and rear case mouldings ... 5-11
6.1 6.2 6.3 6.4
Outline of dual ramp gauge ... 6-5 Ramp check - Square/Ramp style flags ... 6-5 Linear accuracy gauge ... 6-6 Taper gauge ... 6-6
8.1 8.2 8.3a 8.3b 8.4 8.5 8.6
General assembly ... 8-3 Plunger clamp and super nut assemblies ... 8-8 Pole clamp assembly: Non-rotating ... 8-9 Pole clamp assembly: Rotating ... 8-10 Leadscrew assembly ... 8-10 Main board assembly ... 8-13 Regulator board assembly ... 8-14
9.1
Braun Perfusor conversion: parts required ... 9-2
A.1 A.2 A.3
New modified Syringe Size Sensor Flag ... A-1 Tightening order of the case screws ... A-3 Size Sensor Flag: general details ... A-5
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LIST OF TABLES Table Title Page 2.1 Syringe size and max. auto. continuous infusion rate ... 2-3
Page x
4.1 4.2 4.3
RS232 ‘D’ connector connections ... 4-5 PL11 connections ... 4-9 Temperature/ voltage range for setting RV1 ... 4-10
5.1 5.2 5.3 5.4 5.5
Fault codes ... 5-1 Fault causes ... 5-2 Front case spares kit ... 5-11 Size Sensor Flag spares kit ... 5-12 Rear case spares kit ... 5-12
6.1
Functional tests ... 6-1
8.1 8.2 8.3a 8.3b 8.4 8.5 8.6
General assembly ... 8-1 Plunger clamp and super nut assemblies ... 8-8 Pole clamp assembly: non-rotating ... 8-9 Pole clamp assembly: Rotating ... 8-10 Leadscrew assembly ... 8-10 Main board assembly ... 8-12 Regulator board assembly ... 8-14
A.1
3500 Syringe Size Sensor Gauges (White) ... A-5
Issue 4 (August 2004)
3500 Service Manual
Smiths Medical International Ltd. General
This Technical Service Manual (TSM) together with the Instruction Manual contains the information required to: • operate, •
maintain, and
•
repair
the 3500 pump. This manual is primarily intended to be read and used by suitably qualified technical personnel.
Different versions of pump
The 3500 infusion pump is manufactured in two different versions: 1.
MCI only - administers a Manually Controlled Infusion only using a range of syringe brands.
2.
TCI- administers a MCI plus a Target Controlled Infusion using the Zeneca DiprifusorTM PFS and other syringe brands.
Identifying a pump: The ‘MCI plus TCI’ pump has a front panel showing the Diprifusor brand name and the ‘Diprifusor’ logo as below:
The ‘MCI only’ pump does not have this front panel logo. Converting a pump: The ‘MCI only’ pump can easily be converted to a ‘MCI plus TCI’ pump at the Smiths Medical Customer Service Centre. During the conversion, the Diprifusor front panel logo is added to the pump.
This manual provides for both versions of the pump. Relevant instructions for each version is presented, including how each version functions.
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Warnings and cautions
Smiths Medical International Ltd.
Warnings and cautions Warnings tell you about dangerous conditions that could lead to death or serious injury to the user or patient that can occur if you do not obey all of the instructions in this manual. WARNINGS 1. WARNING: To avoid over- or under- infusion, always verify that the brand and size of the loaded syringe are the same as the brand and size displayed on the screen before starting an infusion. Failure to do so may result in an inaccurate delivery of medication, resulting in patient injury or death. 2. WARNING: To avoid incorrect or inappropriate configuration of the pump, the Configuration menu must only be selected by qualified persons or authorised personnel. Incorrect pump configuration could lead to inappropriate infusion resulting in patient injury or death. 3. WARNING: This equipment is not suitable for use in the presence of flammable anaesthetics, oxygen-enriched or explosive atmospheres. The use of the device in such atmospheres may lead to explosion or fire. 4. WARNING: To avoid possible malfunction of the pump, do not expose the pump to X- rays, gamma rays or ionizing radiation, or to the RF interference or strong electric/magnetic fields emitted (for example) by diathermy equipment or mobile telephones. If the pump is used in the presence of, or in combination with Magnetic Resonance Imaging (MRI) machines it must be protected from the magnetic field emitted by such equipment. Malfunction of the pump can cause incorrect infusion or loss of infusion resulting in patient injury or death. 5. WARNING: Operation of the pump outside the temperature limits defined in the specification may result in erroneous operation. Ensure that the temperature is within the specified limits. Failure to do so may result in patient injury or user injury. 6. WARNING: In order to ensure that the intended infusion is performed, data must be entered correctly. Likewise before confirming any displayed data the user should ensure that it is correct. Failure to do so may result in compromised function of the product, patient injury or user injury. 7. WARNING: Failure to respond promptly to an alarm may result in patient injury or death. 8. WARNING: Failure to follow the Service Manual’s maintenance schedule recommendations may result in compromised function of the product and lead to patient injury or death. 9. WARNING: It is essential that clinical staff remain within visual and audible range of the pump so that critical alarms can be seen or heard and responded to. 10. WARNING: The user should ensure that the performance offered by the pump is fit for the intended purpose. Failure to do so may result in compromised function of the product, patient injury or user injury. 11. WARNING: When the pump is carrying out an infusion, to ensure that electrical safety is maintained, only items of equipment that conform to EN60950 are to be connected to the RS232 connector situated at the base of the pump, otherwise patient safety may be compromised. 12. WARNING: Correct management of battery charging is essential to ensure that the pump can operate on batteries for the time specified. Failure to do so may lead to impaired functioning of the pump, resulting in patient injury or death. 13. WARNING: Do not use a faulty pump. If the pump develops a fault then an alarm will sound; the display will indicate a FAULT condition and the pump will fail to infuse. Incorrect performance of the pump can cause complications resulting in patient injury or death. If the pump develops a fault then it must be referred to a suitably qualified engineer or returned to Smiths Medical in order to have the fault rectified. 14. WARNING: Failure to use the mains lead clamp means that the pump may be accidentally or erroneously disconnected from the mains. Although there is battery backup in case this happens, the battery may not be sufficiently charged. Consequently there is a risk of the pump not functioning, which could lead to patient injury or death. 15. WARNING: If an occlusion alarm occurs, immediately clamp the line to eliminate the possibility of a bolus being delivered to the patient. Then inspect the fluid pathway for kinks, clogged catheter, etc. in order to remove the occlusion prior to restarting the infusion. An unintentional bolus of medication can result in patient injury or 16. WARNING: Use only the syringes and administration sets listed in the Specification in Chapter 1. Failure to do so may result in an inaccurate delivery. Smiths Medical does not guarantee performance of the pump if syringes other than those listed are used. Incorrect function or performance of the pump can cause complications resulting in patient injury or death. 17. WARNING: The volume of fluid contained in the connecting tubing is a residual amount and will not be infused. Hence this extra volume of fluid must be allowed for when initially filling the syringe and purging the system. Under-delivery of medication can cause complications resulting in patient injury or death. 18. WARNING: To avoid patient embolism, ensure that the patient tubing is purged of all air bubbles before administering any medication. The pump provides a purge facility to assist with this process. The presence of air within the medication can result in complications leading to patient injury or death.
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Warnings
19. WARNING: To avoid syphoning of the syringe contents (free flow), ensure that the syringe is correctly loaded into the pump, that the syringe plunger is properly engaged by the pump’s actuator and that the pump is placed not more than 80cm above the infusion site. Syphoning can result in over-infusion leading to patient injury or death. 20. WARNING: To avoid over-infusion, do not purge the infusion line when the administration set is connected to the patient. Over-infusion of medication can result in patient injury or death. 21. WARNING: To avoid the pump becoming detached from an IV pole always make sure that the pump is securely fixed to the pole. Always check the security and stability of the assembly with the pump mounted. 22. WARNING: Following a significant liquid spill onto the pump, it should be wiped dry and inspected by service personnel before being returned to service. Failure to do so may result in compromised functioning of the pump, leading to patient or user injury or death. 23. WARNING: When using a syringe smaller than 50/60 ml, the occlusion pressure will increase as the diameter of the syringe decreases, i.e. the smaller the syringe the higher the pressure. 24. WARNING: The patient history is lost when the clock is reset. 25. WARNING: Only adequately qualified personnel should maintain and repair the pump. 26. WARNING: The pump must be disconnected from the AC power supply before the case is opened. 27. WARNING: The Configuration and Diagnostic mode must only be used by personnel who are adequately qualified and have previous training in the use of the pump. 28. WARNING: The safety and reliability of the pump may be compromised by the use of parts other than those specified in this Manual. 29. WARNING: When a new Syringe Size Sensor Flag has been fitted (see Appendix), the pump must be tested using the new syringe size sensor gauges available from Smiths Medical (part number 0131-0202). Page A-3 of the Appendix gives details of the Final Testing procedures. 30. WARNING: The pump must be set to display the brand and the size of syringe that is going to be used. Using a different brand or size of syringe to that being displayed could lead to the incorrect amount of drug being administered, which could result in injury or death. 31. WARNING: The internal pump batteries must be disposed of in accordance with the manufacturers instructions. Lead acid batteries must NOT be placed in the normal waste stream.
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Smiths Medical International Ltd.
CAUTIONS
CAUTIONS Cautions tell you about dangerous conditions that can occur and cause damage to the pump if you do not obey all of the instructions in this manual. 1. CAUTION: Refer all service, repair and calibrations only to qualified technical personnel. Unauthorised modifications to the pump must not be carried out. 2. CAUTION: When the pump is turned, on if screens similar to those illustrated are not displayed, do not use the pump. Send the pump to a suitably qualified engineer or return it to Smiths Medical in order to have the fault rectified. 3. CAUTION: Do not use cleaning and disinfecting agents other than the approved ones specified here. 4. CAUTION: The pump must not be immersed in any liquids or exposed to strong organic solvents. Wipe off spills immediately; do not allow fluid or residues to remain on the pump. Additionally, the pump is not designed to be autoclaved, steam-sterilised, ETO-sterilised or subjected to temperatures in excess of 45° C (113° F). Failure to observe this caution may cause serious damage to the pump. 5. CAUTION: During the removal and replacement of a pump's components, strict observance to Electro Static Discharge (ESD) rules must be observed at all times, i.e. an earthing strap must be worn. Failure to apply ESD protection may result in serious damage to the product and possible malfunction. Ensure that any replacement printed circuit board or other ESD sensitive items are stored in an anti-static container.
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Abbreviations used
The following list shows abbreviations that have been used throughout this Manual:
Zeneca Trademark
Abbreviation
Meaning
A A to D AC C °C cNm CPU cm csk CRC DC Fig. g Hg Hz IC kg KVO LED MCI mA mg ml mm PCA PCB PL PWM PFS R R.F. RAM ROM V
Ampere Analogue to Digital Alternating Current Capacitor Degrees Celsius CentiNewton metre Central Processing Unit Centimetre Countersunk Cyclic Redundancy Check Direct Current Figure Gram Mercury Hertz Integrated Circuit Kilogram Keep Vein Open Light Emitting Diode Manually Controlled Infusion Milliampere Milligram Millilitre Millimetre Patient Controlled Analgesia Printed Circuit Board Plug Pulse Width Modulation Prefilled syringe Resistor Radio Frequency Random Access Memory Read Only Memory Volts
DiprifusorTM (Target Controlled Infusion...TCI, Software/ Subsystem/System) and the stylized D with arrow logo are trademarks, the property of Zeneca Limited. The Zeneca PFS is used for the infusion of the drug ‘Diprivan’(D).
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CHAPTER 1 INTRODUCTION, FEATURES, CLASSIFICATION and SPECIFICATION
Graseby 3500 Anæsthesia Syringe Pump
Introduction
Smiths Medical International Ltd.
CHAPTER 1 INTRODUCTION, FEATURES, CLASSIFICATION and SPECIFICATION Introduction
The 3500 anæsthesia syringe pumps (Figure 1.1 and 1.2) are based on a micro-controller design. They have been purpose-developed for the administration of anæsthetics, mainly in a hospital operating theatre. There are two versions of the 3500 pump, both very similar. Each version is easily recognised by looking at the front panel markings. The pumps basically function as briefly detailed below.
MCI only pump
This version of the 3500 allows a Manually Controlled Infusion (MCI) and/or a bolus using the normally accepted brands of syringe. The infusion entails presetting both the required infusion rate and the dose of the drug to be used into the pump. A conversion kit (see Chapter 8) enables the MCI only pump to accept the Braun Perfusor syringe. In their Service Department, Smiths Medical are able to convert an MCI only pump to an ‘MCI plus TCI’ pump.
MCI plus TCI pump
This version of the 3500 is able to use several brands of syringe when the pump is Configured for MODE = NORMAL (MCI only) or, a Zeneca PFS for TCI when the pump is Configured for MODE = TCI. During a TCI, the infusion rate is controlled by the Diprifusor module (a printed circuit) to achieve and maintain a desired Target Plasma Concentration (TPC). A tag on the Zeneca PFS ear identifies the PFS syringe that contains the drug Diprivan. Note: This version of the pump cannot be converted to operate with the Braun Perfusor syringe.
MCI operation
The MCI only pump and the MCI section of the MCI plus TCI pump can be configured by a suitably qualified person to work with any of several brands of syringe: the brand selected is displayed. Knowing the brand of syringe, and in conjunction with the syringe size sensor (which detects the diameter of the syringe) the pump's software is able to compute the volume of the installed syringe. The pump can compute syringe volumes of 5; 10; 20; 30 and 50/60 millilitres.
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General information General information
Smiths Medical International Ltd.
The 3500 can be configured for the following: • to deliver a volume or a mass unit manual controlled infusion, or • to deliver a volume or a mass unit bolus infusion. Totaliser
A running total of the volume of liquid infused is stored in the pump’s totaliser. It remains available for display, even though the infusion may have been stopped and then restarted. The totaliser can be reset to zero when required.
AC power supply
The AC power can vary between 100 V and 250 V and 50 to 60 Hz, allowing the pump to be used universally without adjustment.
Internal power supply The pump can be operated from AC power or from internal rechargeable batteries. When functioning on fully charged batteries, the pump gives more than ten hours of continual use. A battery charging circuit within the pump keeps the batteries charged. The batteries are fully charged when the AC power has been connected to the pump for 14 hours, even though the pump itself may be switched off. Self-test
The pump completes a self-testing routine each time it is switched on.
Safety Numerous safety features have been built into both the pump's software and hardware. This warns the user of such incidents as a power failure or an occlusion by giving visual and audible alarms. Security cover
1-2
An optional security cover kit is available (part number 0131-0277). The kit includes all the items required to modify the pump, including comprehensive fitting instructions. When fitted, the kit protects the syringe from tampering only; it provides no other security. It does not lockout the keypad or give audible or visual alarms when opened.
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Front views
Smiths Medical International Ltd.
Syringe type and size
ALARM silence button Alarm LED
AC mains LED GM0279-A
Display
BOLUS button
Barrel clamp
Menu selection button
Syringe size sensor
Syringe plunger
Syringe ear Syringe ear groove
12 button numeric pad
START button and LED
Pump plunger clamp
Power ON
STOP button and LED
Power OFF
Figure 1.1 Front view of the ‘MCI only’ 3500 pump
Figure 1.2 Front view of the ‘MCI plus TCI’ 3500 pump
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