MIR MiniSpir Light User manual

MiniSpir
Page 1 of 27
Rev.1.4
Service Guide
Service manual Rev. 1.0
Date issued 20.08.2014
Date of approval 20.08.2014

MiniSpir
Page 2 of 27
Rev.1.4
Service Guide
INDEX
1. INTRODUCTION..................................................................................................................................................................................................................3
1.1. INTRODUCTORY REMARKS .............................................................................................................................................................................................3
1.1.1. General Aspects..................................................................................................................................................................................................................3
1.1.2. Safety Aspects.....................................................................................................................................................................................................................3
1.1.3. Legal Aspects .....................................................................................................................................................................................................................3
1.1.4. Environmental Aspects...................................................................................................................................................................................................... 3
1.2. DATA REGISTRATION........................................................................................................................................................................................................3
1.2.1. Equipment and customer registration / Service file ........................................................................................................................................................4
1.2.2. Configuration register........................................................................................................................................................................................................4
1.2.3. Product documentation .....................................................................................................................................................................................................4
1.2.4. Technical modifications ....................................................................................................................................................................................................4
1.2.5. Product evaluation .............................................................................................................................................................................................................4
1.2.6. Additional Information ......................................................................................................................................................................................................4
1.3. GENERAL...............................................................................................................................................................................................................................5
1.3.1. Technical Data...................................................................................................................................................................................................................5
1.3.1.1. MiniSpir unit ......................................................................................................................................................................................................................5
1.4. STANDARDS APPLIED ........................................................................................................................................................................................................5
2. HARDWARE DESCRIPTION ..............................................................................................................................................................................................6
2.1. MAIN BOARD MODULE .....................................................................................................................................................................................................6
2.1.1. Room temperature sensor..................................................................................................................................................................................................6
2.1.2. USB communication port..................................................................................................................................................................................................7
2.1.3. Oximetry port .....................................................................................................................................................................................................................7
2.2. TURBINE FLOWMETER.....................................................................................................................................................................................................7
3. MAINTENANCE ...................................................................................................................................................................................................................8
3.1. GENERAL...............................................................................................................................................................................................................................8
3.2. TEST EQUIPMENT ..............................................................................................................................................................................................................8
3.3. CHECKLIST............................................................................................................................................................................................................................8
3.3.1. Functional test....................................................................................................................................................................................................................9
3.3.1.1. Software version .................................................................................................................................................................................................................9
4. REPLACEMENT PROCEDURES .......................................................................................................................................................................................9
4.1. General .....................................................................................................................................................................................................................................9
4.2. Cover....................................................................................................................................................................................................................................... 10
4.2.1. Opening the device .......................................................................................................................................................................................................... 10
4.3. PCBs and components .......................................................................................................................................................................................................... 10
4.3.1. Replacing the USB cable in case of MiniSpir Light....................................................................................................................................................... 10
4.3.2. Turbine..............................................................................................................................................................................................................................11
4.3.2.1. Cleaning the reusable turbine...........................................................................................................................................................................................11
4.3.2.2. Calibration of the reusable turbine.................................................................................................................................................................................. 12
4.3.3. Internal software upgrade procedure .............................................................................................................................................................................. 12
4.4. Oximeter module ................................................................................................................................................................................................................... 13
4.4.1. Replacing of the oximetry module .................................................................................................................................................................................. 14
4.5. Testing procedures ................................................................................................................................................................................................................ 14
4.5.1. Testing procedures .......................................................................................................................................................................................................... 14
5. SPARE PARTS....................................................................................................................................................................................................................... 17
5.1. ORDERING .......................................................................................................................................................................................................................... 17
5.2. DELIVERY............................................................................................................................................................................................................................ 17
5.2.1. Ordering PCB's................................................................................................................................................................................................................ 17
5.2.2. Warranty claims................................................................................................................................................................................................................ 17
5.3. RETURN SHIPMENTS ...................................................................................................................................................................................................... 18
6. TROUBLESHOOTING....................................................................................................................................................................................................... 18
6.1. The device does not switch on .............................................................................................................................................................................................. 18
6.2. The device does not measure spirometry at all .................................................................................................................................................................... 18
6.3. The device does not measure spirometry correctly.............................................................................................................................................................. 18
6.4. The device does not measure oximetry at all ....................................................................................................................................................................... 19
6.5. The device does not measure oximetry correctly ................................................................................................................................................................. 19
6.6. The data communication via USB does not function .......................................................................................................................................................... 19
6.7. Index of components ............................................................................................................................................................................................................. 19
APPENDIX A: SPARE PARTS LIST .............................................................................................................................................................................................. 20
APPENDIX B: SERVICE INFO'S (Product Change Notes) ........................................................................................................................................................ 24
APPENDIX C.................................................................................................................................................................................................................................... 25
ANNEX.............................................................................................................................................................................................................................................. 27

MiniSpir
Page 3 of 27
Rev.1.4
Service Guide
1. INTRODUCTION
1.1. INTRODUCTORY REMARKS
1.1.1. General Aspects
The spirometers from the product group MIR052-MIR053 are marketed under the label MiniSpir.
This manual has been written for technicians involved in the service of the MiniSpir. Service can be carried out by the
service organization of the manufacturer or by any other technician authorized by MIR srl.
The manufacturer will not be held responsible for the results of maintenance or repairs by unauthorized persons.
1.1.2. Safety Aspects
Safe execution of the procedures in this manual requires technical experience and general knowledge of safety precautions.
Before you start any operation on the unit, you must have first read both the User and this Service
Manual.
Warnings, Cautions and Notes are used throughout this manual to bring special matters to the immediate attention of the
reader.
Warning The Warning concerns danger to the safety of the technician or user.
Caution The Caution draws attention to an action which may damage the equipment.
Note The Note points out a statement deserving more emphasis than the general text, but which does not
deserve a Warning or Caution.
Warning
In order to prevent unforeseen incidents, keep away from sensitive electronical devices. Inside the MiniSpir there
are low voltages and very low currents, so these represent no danger for persons with experience and with a
general knowledge of safety precautions.
The sequence of steps in a procedure may also be important from the point of view of personal safety and prevention of
damage, therefore never change the sequence of steps or alter any procedure.
1.1.3. Legal Aspects
This manual and the information herein are property of MIR srl (Rome, Italy).
Copying this manual in whole or in part is strictly forbidden.
MIR srl disclaims any responsibility for personal injury and/or damage to equipment caused by:
negligence or disregard of a Warning or Caution
deviation from any of the prescribed procedures
execution of activities which are not prescribed
ignorance of the general safety precautions for handling tools and the use of electricity
incorrect or unreasonable use
1.1.4. Environmental Aspects
Please dispose properly of any items replaced, following all the local regulations.
All components (housing, PCBs, electronic and disposable parts, etc.) must be disposed of according to the relevant local
regulations.
1.2. DATA REGISTRATION

MiniSpir
Page 4 of 27
Rev.1.4
Service Guide
1.2.1. Equipment and customer registration / Service file
From the point of view of safety and product liability the following data must be registered for each unit:
Equipment data
Model, REF code and serial number
Customer data
date of purchase
name and full address of the customer
Service data
log of all service activities
Configuration data
the actual configuration of the equipment (hardware and software versions)
The distributor (through their dealer and/or service organization, if any) is responsible for maintaining these records and
they must be able to provide these data when requested.
1.2.2. Configuration register
A configuration file gives the serial numbers and/or batch numbers of main sub-assemblies and/or important parts of
each unit. The parts listed in a configuration file are defined as registered parts. For example parts as mainboards, display
and internal software.
Note
MIR srl has the original configuration file of each unit sold. Any possible changes in the original configuration of
the supplied units must be filed and the distributor must be able to provide this data.
1.2.3. Product documentation
The documentation set for the MiniSpir includes a User Manual. The User Manual is a recommended item for all service
engineers. The user manual is available in the following languages:
English
Spanish
German
French
Italian
Portuguese
1.2.4. Technical modifications
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be published as Service Info in appendix B of this Service Manual.
Note
Some functions described in this manual may not be activated in the present software or hardware version. For
detailed information, please refer to the User Manual.
1.2.5. Product evaluation
In order continuously to improve the quality of our products, MIR srl requests that the service organizations should report
any device issue which may be discovered. When the same issue regularly occurs or when a safety issue occurs, MIR srl
would like you to send us a product complaint report. The report must contain the name, the type of product, a detailed
description of the problem, the frequency of the same problems, the quantity of sold equipment and your solution to the
problem (if any).
1.2.6. Additional Information
Please do not hesitate to contact MIR if you require additional information.

MiniSpir
Page 5 of 27
Rev.1.4
Service Guide
Manufacturer’s address:
MIR srl
Medical International Research
Via del Maggiolino, 125
00155 Rome
Italy
Tel.: [phone]
Fax.: [phone]
Email: [email protected]
1.3. GENERAL
MiniSpir is an “open circuit system” for the measurement of inspiratory and expiratory lung function parameters and
oximetry values, such as pulse rate and SpO2. It is suitable for basic lung function analysis of the mechanical respiratory
tract parameters. Three different respiratory tests can be performed:
the forced vital capacity test (FVC),
the slow Vital Capacity test (VC/IVC)
the Maximum Voluntary Ventilation test (MVV)
MiniSpir has been designed and manufactured to ensure the highest level of safety and the unit fully complies with the
stringent international EN 60601-1 and EN 60601-1-2 standards.
1.3.1. Technical Data
1.3.1.1. MiniSpir unit
Max. current inside the unit
50 mA
Approval
CE 0476 EC mark for Medical Devices
FDA
Dimensions
142x49.7x26mm
Weight
65g
Volume range
10 L
Flow range
± 16 L/s
Volume accuracy
± 3% or 50 mL
Flow accuracy
± 5% or 200 mL/s
Dynamic resistance at 12 L/s
< 0,5 cmH2O/L/s
Type of electrical protection
Class II device
Level of protection against direct or indirect contact
Category BF apparatus
Level of water ingress protection
IPX1 device, protected against water drops
Level of assurance of use in the presence of an anaesthetic
mix flammable with air or oxygen or protoxide of nitrogen
Apparatus not suitable
Conditions of use
Apparatus for repeated use
Storage conditions
Temperature: MIN -40 °C, MAX + 70 °C
Humidity: MIN 10% RH; MAX 95%RH
Operating conditions
Temperature: MIN +10 °C, MAX +40 °C
Humidity: MIN 10% RH; MAX 95%RH
1.4. STANDARDS APPLIED
According to rule 10 of the European directive 93/42/CEE the device is classified as Class IIa
EN 60601-1 Electronic medical apparatus. Part 1: General safety standards
EN 60601-1-1 Electronic Medical apparatus. Part 1: General safety standards 1. Collateral standard: Safety requirements
for medical electronic systems

MiniSpir
Page 6 of 27
Rev.1.4
Service Guide
EN 60601-1-2 Electronic medical apparatus. Part 1: General safety standards 2. Collateral standard: Electromagnetic
compatibility –Requirements and tests
EN 60601-1-4 Electronic medical apparatus. Part 1: General safety standards 4. Collateral standards: Programmable
medical electronic systems
UNI CEI EN ISO 14971 Medical devices: application of risk management to medical devices
ATS/ERS TASK FORCE: Standardisation of lung function testing (volume 26/numbers 1-5/2005)
Health Canada Medical Device Regulation: SOR-98-282
SANS 451:2008 Spirometry —Generation of acceptable and repeatable spirograms FDA Regulations
Japanese MHLW Ministerial Ordinance 169: 2004
2. HARDWARE DESCRIPTION
Because of the modular design of the MiniSpir, the description is on a block diagram level.
BLOCK DIAGRAM
2.1. MAIN BOARD MODULE
The main board module translates the input signal from the turbine flowmeter into spirometry values and compares them
with the predicted values calculated with the parameters age, sex, height, weight and ethnic group. Test results are
displayed on PC display using winspiroPRO software installed in the PC, and can be printed on paper with an external
printer. Spirometry test data are stored into the PC memory and are available for later use.
The main board module also makes a calculation using the oximetry input signal; from this signal collected at a 16
msec/frequency the percentage value of oxygen saturation in the blood and the heart beat values are obtained, which are
oximetry parameters.
The main board module includes:
-Main Microcontroller
-Measuring controller for flow, volume and ambient temperature
-Ambient temperature sensor (to enable conversion from ATP to BTPS conditions).
-USB port
-Oximetry port
2.1.1. Room temperature sensor
(IC15) DALLAS DS 18B20 to measure the ambient (room) temperature to enable the calculation of the BTPS conversion
factor.

MiniSpir
Page 7 of 27
Rev.1.4
Service Guide
2.1.2. USB communication port
Version 2.0.
2.1.3. Oximetry port
The connector beside the USB ports is used to connect the oximetry sensor, where this function is enabled on the device.
Many sensors can be used on MiniSpir based on the type of test to be performed and on the patient characteristics.
The manufacturer provides the most frequently used sensor with the device, which has the following features:
mechanical part
finger
electrical part
two light emitting diodes (LEDs), one emits in the visible spectre and one infrared
Both lights then pass through the finger and are “read” by the receiver. As these lights pass through the finger, a
proportion of the light is absorbed by the blood and by the soft tissue, in function of the concentration of haemoglobin.
The quantity of light absorbed, at each frequency, depends on the degree of oxygenation of the haemoglobin inside the
soft tissue.
2.2. TURBINE FLOWMETER
The sensor for measuring flow and volume is similar to the model already used in other spirometers produced by MIR
(Series MIR 040 Mod. Spirodoc, MIR024_REV2 Mod. Spirobank G USB).
The turbine flowmeter consists of one mechanical and two electrical parts:
Mechanical parts:
-turbine
Electrical parts:
-Two pairs of infrared transmitters/receivers positioned as shown below.
-A signal conditioning circuit to rectify the output signal from the two infrared light receivers.
The rotation of the rotor causes the interruption of the infrared beam, thus creating a pulse signal which has a frequency
directly proportional to the flow.
The measurement of the air flow which passes through the tube is therefore proportional to the number of interruptions
of the infrared beam.

MiniSpir
Page 8 of 27
Rev.1.4
Service Guide
The phase difference  (positive or negative)
between the signals from each of the two infrared
receivers (RX1 and RX2) depends upon the direction
of rotation of the moving rotor and therefore supply
the information of the direction of the air flow
(expiration or inspiration).
In detail,  > 0 for expiratory flow,  < 0 for
inspiratory flow.
The two pulse trains are squared by a Schmitt trigger
(LMV932MM on MiniFlowmeter) and then sent to
two input ports of the microprocessor (IC17
CP3BT26, pins 38 and 36).
The main microprocessor has the possibility to switch
all the peripheral ports on or off, including the
turbine.
3. MAINTENANCE
3.1. GENERAL
We recommend checking the MiniSpir on an annual basis.
For cleaning of the MiniSpir and the accessories please see the User Manual.
3.2. TEST EQUIPMENT
For the repair and maintenance procedures of the MiniSpir the following test equipment and accessories are required:
-Complete set of precision engineering tools (including 2.5 mm allen key and cross-screwdriver)
-Calibration syringe (3L is recommended)
-Digital multimeter, at least 3½ digits, accuracy better than 1%.
-Oscilloscope
-Digital Thermometer
-PC
-winspiroPRO Software Installation CD
-USB port connection cable
-Oximeter sensor (MIR code 919023)
-Hot Glue Gun
-3 mm double-sided adhesive tape
-Welder
If a problem cannot be solved with the present equipment and suitable instruments are not available, please send the
MiniSpir to the manufacturer to carry out the service.
3.3. CHECKLIST
The following procedures must be carried out during an inspection and/or after every repair:
Modifications, if any, must be noted on the “Service Info” sheets. See Appendix B of this manual for further
information.
Visual inspection. Check the electrical connection for safety and check that all components are properly fastened.
Check that all accessories do not present any visible damage.
Functional test (see Paragraph 3.3.1)
File a copy of all service activities.

MiniSpir
Page 9 of 27
Rev.1.4
Service Guide
3.3.1. Functional test
3.3.1.1. Software version
To check the software version installed on the device, connect
the MiniSpir to the PC and with winspirPRO perform the USB
test using the window alongside.
4. REPLACEMENT PROCEDURES
4.1. General
When handling sensitive static devices such as the main board of the MiniSpir the following precautions should be
observed:
-Persons should be earthed by means of a wrist strap.
-Ground all electrical equipment, workbench etc.
Also make sure that you have not left any tools inside and all screws including their washers are again fixed in the original
place.
Note
Where not otherwise indicated, the reinstallation of a part is in reverse order of the removal procedure.
After every repair a functional test must be performed.
Caution
If any soldering (especially on SMD-parts) is to be made, make sure that your tools are suitable for such
precision work.

MiniSpir
Page 10 of 27
Rev.1.4
Service Guide
4.2. Cover
The MiniSpir case consists of several parts as illustrated in the
image alongside.
The display is housed inside its casing which is made up of two parts
held together with three screws.
4.2.1. Opening the device
To open MiniSpir :
1. Switch off the device Place the device on a flat surface with
bottom part face-up
MiniSpir
MiniSpir Light
2. Completely remove the three screws using a screwdriver
3. Remove the lower case from the middle case.
Now the PCB is only connected with the upper case
4. the PCB and the upper case can be completely separated and the device is opened
4.3. PCBs and components
4.3.1. Replacing the USB cable in case of MiniSpir Light
For MiniSpir Light the USB cable is directly soldered to the main PCB.
To replace the cable proceed as follow.
Open the device following the steps described in point 4.2.1.
Now it can be possible to see the single wires soldered on the PCB, see the image
alongside.
Unsolder the wires using the welder, then remove the cable from the gateway.
Apply a new cable in the same way to the gateway, then solder the wires. Pay attention
to the correct colour position ad described on the PCB.
Apply the gateway to the middle case and then close the device applying the missing
case with the three screws.