RISK OF DANGER ! Indicates a procedure to be strictly respected in order to
avoid any risks for the operator (user) or damages on the instrument or on the
quality of results.
Indicates that wearing gloves is mandatory before performing the described
operation due to risk of contact with materials that may be infectious.
NOTA : Indicates important additional information.
BEFORE TO INSTALL OR TO
MAINTAIN A MYTHIC 18 YOU
HAVE TO READ AND TO REFER
TO THE USER’S MANUAL.
OPERATORS MUST HAVE
RECEIVED ADEQUATE TRAINING.
BE CAREFUL WITH THE EDGE OF THE METAL SHEETS
AFTER HAVING DISMANTLED THE COVERS.
This equipment needs special precautions regarding EMC and needs to be installed and put
into service according to the EMC information listed below
Guidance and manufacturer’s declaration – Electromagnetic immunity
The MYTHIC 18 is intended for use in the electromagnetic environment specified below. The customer or
the user of the MYTHIC 18 should assure that it is used in such environment.
Immunity test IEC 60601 test level Compliance
level
Recommended separation distance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
Where P is the maximum output power rating of the
Field strenghts from fixed RF transmitters, as
Interference may occur in the vicinity of equipment
3 Vrms
150Khz to 80Mhz
3 Vrms
80Mhz to 2,5Ghz
3 Vrms
3 Vrms
Electromagnetic environment - guidance
Portable and mobile RF communications equipment should
be used no closer to any part of the MYTHIC 18,
including cables, than the recommended separation
distance calculated from the equation applicable to the
frequency of the transmitter.
d
= 1,2√P
d
= 1,2√P 80MHz to 800MHz
d
= 2,3√P 800MHz to 2,5GHz
transmitter in watts (W) according to the transmitter
manufacturer and d is the recommended separation
distance in meters (m).
a
determined by an electromagnetic site survey,
less than the compliance level in each frequency range.
marked with the following symbol:
should be
b
NOTE 1 At 80Mhz and 800MHz, the higher frequency range apllies.
NOTE 2 Theses guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
a
Field strenghts from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios,
amateur radio, AM an FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the
electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should considered. If the measured field
strenght in the location in which the MYTHIC 18 is used exceeds the applicable RF compliance level above, the MYTHIC 18 should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting
or relocating the MYTHIC 18.
b
Over the frequency range 150KHz to 80MHz, field strenghts should be less than 3V/m.
2.4FLUIDICS PARTS DESCRIPTION.......................................................................................................................................................... 12
2.5.1 General Diagram .....................................................................................................................................................................13
3.2ELECTRICS PARTS VIEW ..................................................................................................................................................................... 16
3.2.1 Main board ...............................................................................................................................................................................16
3.2.4 Power supply block................................................................................................................................................................. 17
3.4.1 General view............................................................................................................................................................................. 19
3.4.9 Fluidic door switch................................................................................................................................................................27
3.4.10 Temperature sensor............................................................................................................................................................28
5.2C2 FORMAT .........................................................................................................................................................................................30
5.2.1 General principle.....................................................................................................................................................................30
6.1.2 Two years spare parts kit....................................................................................................................................................37
6.1.2 All spare parts ........................................................................................................................................................................39
6.2BLOW UP VIEW.................................................................................................................................................................................... 41
6.2.5 Front cover Module...............................................................................................................................................................47
9.4.2 O-ring or piston replacement.............................................................................................................................................57
9.5.2 Main board replacement ...................................................................................................................................................... 61
9.5.3 Main board...............................................................................................................................................................................63
MYTHIC 18 is a fully automated analyzer performing hematological analysis on whole blood.
The human blood venous sample must be collected in an EDTA K3 (Ethylene Diamine Tetracetic Acid, tri
potassic) tube in sufficient quantity. The LMG results are available for six hours after the blood draw. The
use of EDTA K2 leads to a poor quality level of the LMG results.
It must be correctly homogenized before analysis. It is recommended to use a rotary agitator turning
between 20 to 30 turns/mn during 10 minutes.
A volume of insufficient blood for the quantity of anticoagulant or a bad mixing may involve
an erroneous result.
Two dilution rate are performed :
~1/237 to 1/257 for WBC/HB (depend of the lysis quantity, see section 7.2.2.2)
~1/15000 for RBC/PLT
2.2 FLUIDICS SEQUENCES DESCRIPTION :
SAMPLING SEQUENCE :
1- Syringes down : (no valve)
~Less than 9,8 µl of blood sample are draw inside the sampling needle
Diluent prime
Vacuum prime
2- Needle up and syringe up (valve 3+4)
Needle outside cleaning with diluent and waste vacuum
3-Rocker move above the WBC bath
and the syringes up to drain the waste (valve 7)
4- Needle down to the rinsing position
5- Syringe down
WBC bath drain (valve 1)
6- Syringe up
Second outside needle cleaning (valve 4)
Waste syringe drain (valve 7)
7- Syringe down
WBC bath drain (valve 1)
8- Syringe up
Waste syringe drain (valve 7)
WBC DILUTION :
9- Needle down to the dilution position
and the syringes down to prime the diluent (valve 8)
10- Syringe up for the WBC dilution (~2 ml)
Diluent outside of the needle (valve 4)
Diluent inside the needle (valve 4+5)
Bubble to mix the dilution (valve 1)
RBC DILUTION AND LYSING :
11- Syringe down (no valve)
Drawing sample of the first dilution (~20µl)
Diluent prime
Vacuum prime
12- Needle up and syringe up
Rocker move above the RBC bath
Needle outside cleaning with diluent and waste vacuum (valve 3+4)
13- Needle down to the rinsing position
14 Syringe up
Second outside needle cleaning (valve 4+8)
Lysis in the WBC bath (0,3 to 0,5ml) (valve 9)
Bubble to mix the dilution (valve 1)
15 Syringe down
RBC bath drain (valve 2)
16- Needle down to the dilution position
17- Syringe up for the RBC dilution (~1,5ml)
Waste syringe drain (valve 7)
Diluent outside of the needle (valve 4+8)
Diluent inside the needle (valve 5)
Bubble to mix the dilution and diluent to rinse the counting head (valve 6+10+2)
MEASUREMENTS :
18- Syringe down to process the vacuum counting (valve 10)
19- First measurement sequences (valve 10)
20- Syringe up
Diluent back pressure (valve 4+6)
21- Syringe down to perform the vacuum counting (valve 10)
22- Second measurement sequences (valve 10)
DRAIN AND RINSE BATH :
22- Syringe down
Cleaning the apertures (valve 11)
WBC bath drain (valve 1)
RBC bath drain (valve 2)
23- Syringe up
RBC bath rinse diluent (valve 4)
Waste syringe drain (valve 7)
24- Needle up and syringes up for back flush (valve 4+6)
25- Rocker move above the WBC bath
26- Syringe up
WBC bath rinse diluent (valve 4)
Waste syringe drain (valve 7)
NEEDLE BACK AND WASTE DRAIN :
27- Syringe down
Dry the outside of the needle (valve 3)
28- Rocker move in the sampling position
26- Syringe up
Waste syringe drain (valve 7)
30- Needle down in sampling position
The hydraulic part of the MYTHIC 18 is very simple and made of only three modules :
- Sampling module.
- Counting bath module.
- Syringes module.
The modules are connected together by semi rigid tubing.
2.4.1 Sampling module
This module (patent pending) enables to draw the sample and to perform the WBC and RBC/PLT dilutions.
It is assembled with a rotating rocker moving around a support which maintains the system to move up and
down the sampling needle.
A very reliable system of rack-gear moves the rocker.
The cleaning system of the sampling needle can be removed without tool (see section 9.3.2 in the user
manual).
The o-ring of the needle included in the cleaning system can also be removed without tool (see section 9.3.2
in the user manual).
The maintenance of these parts is very easy to perform.
2.4.2 Counting bath module
This module allows to count the WBC and RBC/PLA and to measure the HGB.
It is made with a manifold maintaining the reagent commutation valves and the counting bath block with their
measurement block including the apertures.
The counting bath block assembly and these apertures can be removed without tool (see section 9.3.3/4/5
in the user manual).
2.4.3 Syringes module
This module (patent pending) enables :
to draw the sample
to distribute the reagents
to drain the baths
to do the vacuum necessary for counting
and to push the waste to the waste container.
It is made with a manifold maintaining the fluid commutation valves and with the syringes bloc including five
syringes :
The sampling syringe
The lysis syringe
The two waste and vacuum/pressure syringes
And the diluent syringe.
Only one motor drives the five syringes.
The diluent input and the waste output are also included in this manifold.
- In the case of replacement of the main board or preamplifier board, be aware of the
sensibility of this board to the electrical static discharge (ESD).
- Before operating check the earth connection and use the antistatic bag supply with the
board. Please contact your Orphée for more information.
- Be careful with the edge of the metal sheets after having dismantled the covers.
3.2 ELECTRICS PARTS VIEW
3.2.1 Main board
REF : M18-SM-001 Rev 02
The mono electronic board is located between the hydraulic part and the reagent tray.
The board, driven by a 32-bit processor, manages the following parts :
MYTHIC 18 is supplied with an external power supply block.
- In case of replacement of the main power wire supplied with the MYTHIC 18, the new one
must comply with the local regulation.
- The MYTHIC 18 has been certified with the power supply box provided with the machine.
The use of another external power supply box is not guaranteed. Please contact Orphée.