Biohit Midi Plus User manual

Midi Plus
Instruction Manual
Bedienungsanleitung
Mode d’emploi
Manual Usaria
Instruzioni d’impiego
Bruksanvisning
Käyttöohje

Instruction Manual ......................................1
Bedienungsanleitung................................13
Mode d’emploi ..........................................25
Manual Usaria ..........................................37
Istruzioni d’impiego...................................49
Bruksanvisning .........................................61
Käyttöohje ................................................73
Spare Parts: ..............See inside back cover
BIOHIT Midi Plus

1
CONTENTS
1. INTENDED USE .......................................................................2
2. YOUR NEW BIOHIT MIDI PLUS.............................................2
3. UNPACKING AND PREPARING THE MIDI PLUS FOR USE 2
3.1. Charging the Midi Plus ...................................................3
3.2. Low battery indicator .....................................................3
3.3. Electrical specifications .................................................4
4. MIDI PLUS MATERIALS .........................................................4
5. MIDI PLUS DESCRIPTION .....................................................5
5.1. Operating buttons ..........................................................5
5.2. Speed adjustment wheel................................................5
5.3. Pipet adapters ................................................................5
5.4. Filters ..............................................................................6
5.5. Support...........................................................................6
6. OPERATING THE MIDI PLUS.................................................6
6.1. Adjusting the operating speed.......................................6
6.2. Inserting a pipet..............................................................6
6.3. Aspiration........................................................................7
6.4. Dispensing......................................................................7
6.5. Other pipetting recommendations.................................7
7. STORAGE.................................................................................8
8. MAINTENANCE .......................................................................8
8.1. Decontamination ............................................................8
8.2. Changing the nose cone, silicone adapter and filter.....8
8.3. Changing the batteries...................................................9
9. TROUBLE SHOOTING ..........................................................10
10. WARRANTY INFORMATION ................................................10
11. RECYCLING INSTRUCTION (WEEE) .................................. 11

2
1. INTENDED USE
This liquid handling device is designed and manufactured to be used with
the IVD-product as an IVD-accessory and as a stand alone laboratory
equipment.
2. YOUR NEW BIOHIT MIDI PLUS
The Biohit Midi Plus has been carefully designed and manufactured as a
lightweight, cordless pipetting controller. It can be used with all plastic or
glass pipets between 1-100 ml and also with Biohit 5 ml (Cat. No. 780300)
and 10 ml (Cat. No. 780310) tips. The pipet adapters that allow the use with
the Biohit 5 ml and 10 ml tips are available as accessories. The linear speed
control allows the aspiration and dispensing speeds to be adjusted easily
and precisely to suit either large- or small-volume pipets. The aspiration
and dispensing speeds can also be fine-tuned during operation by applying
varying finger pressure to the operating buttons.
The Midi Plus has been designed so that it can be suspended for the
duration of pipetting. This option can be employed to reduce the strain
associated with long operating periods. The Midi Plus also features an
attached support which allows the unit to be rested on a table between
dispensing routines with a pipet attached.
Cat. No. Product
71093X Biohit Midi Plus
X: 0 = Without AC-adaptor; 1 = With universal AC-adaptor (Euro, USA/Jpn, UK and
China plugs)
3. UNPACKING AND PREPARING THE MIDI PLUS FOR USE
The Midi Plus package contains the following items:
• Midi Plus pipetting controller
• AC-adaptor
• 0.45 μm hydrophobic filters
• Instructions for use
• Quality control certificate
Please check that all the items are included and nothing has been damaged
during shipment.

3
3.1. Charging the Midi Plus
The Midi Plus is supplied fully charged. However,
it is recommended to recharge the unit overnight
before the initial use.
1. Before connecting the AC-adaptor to the
electrical outlet, check that its voltage setting
corresponds to the voltage of your electrical
outlet.
2. Connect the AC-adaptor to the electrical outlet
as well as to the electrical fitting at the base of
the handle of the Midi Plus (Fig.1).
Note: The Midi Plus should only be charged with the AC-adaptor provided.
Note: The Midi Plus can be rested on a table with the support for the
duration of charging.
3. The length of the recharging time is 14 hours for a completely empty
battery.
Note: The Midi Plus should be disconnected from the transformer if it will
be out of use for a lengthy period of time.
3.2. Low battery indicator
When the battery is close to empty, the battery
capacity indicator starts to blink (Fig. 2). The unit can
still be used for some time when the blinking starts.
However, as the capacity of the battery decreases, the
blinking frequency of the indicator will increase until
it is permanently ignited and the unit will need to be
recharged. If it is inconvenient to recharge the Midi
Plus immediately, the unit can be operated directly
through the AC-adaptor. For maximum life time it is
recommended to allow the battery to fully discharge
before recharging it.
Note: If the battery has been fully discharged, it may be necessary to
charge it for a short period of time before it is possible to operate the Midi
Plus directly through the AC-adaptor.
Note: The Midi Plus should not be operated continuously with the AC-
adaptor connected.
Fig. 1
Fig. 2

4
Case
ASA + PC
Handle cover
ASA + PC
Nose cone
PVDF
Silicone
adapter
Locking
button
POM
Operating buttons
ASA + PC
Low battery indicator
Speed
adjustment
wheel
ASA + PC
Handle cover
release buttons
ASA + PC
Support
PA
Suspenison hook
ASA+PC
3.3. Electrical specifications
Batteries • AA, 3 x 1.2 V, 350 mAh, NiCd
• Approx. 7 hours service life when fully charged
• Charging time 14 hours for completely empty batteries
AC-adaptor
• Input voltage and main plug according to local requirements
• Output voltage 9 VDC
4. MIDI PLUS MATERIALS

5
Fig. 3
5. MIDI PLUS DESCRIPTION
5.1. Operating buttons
The Midi Plus has two operating buttons located at the front of the handle.
The upper button enables aspiration for as long as the button is held down.
The lower button allows for dispensing. The aspiration and dispensing
speeds can be fine-tuned during operation by applying varying finger
pressure to the operating buttons.
5.2. Speed adjustment wheel
The speed adjustment wheel is located at the upper part of the handle. The
desired speed is selected by turning the speed adjustment wheel.
5.3. Pipet adapters
The pipet adapter provided with the Midi Plus allows the use of all
standard plastic and glass pipets (graduated and non-graduated) including
Pasteur pipets. The pipet adapter of the Midi
Plus consists of the nose cone and silicon
adapter. The silicon adapter enables a pipet
to fit securely in place, thus creating a proper
vacuum level and preventing leakage.
The Midi Plus can also be used with the Biohit
Proline 5 ml (Cat. No. 780300) and 10 ml
(Cat. No. 780310) tips. The changeable pipet
adapters which allow the use of 5 ml and 10 ml
tips are available as accessories (Fig. 3). (See
7.2. Changing the nose cone, silicon adapter
or filter.)
Pipet adapters (silicon adapter + nose cone):
Cat. No. Product Qty.
711015
711016
Adapter set for 5 ml tip
Adapter set for 10 ml tip
1
1

6
Fig. 5
Fig. 4
5.4. Filters
Removing the nose cone exposes a hydrophobic filter (0.45 micron), located
at the top of the nose piece. The filter protects the Midi Plus from accidental
overaspirations. It is strongly recommended to use only the original filters
supplied by the manufacturer with the Midi Plus. Both sterile and non-sterile
filters are available (see 7.2. Changing the nose cone, silicon adapter or
filter).
Note: The Midi Plus cannot be operated without a filter. Wetting of filter
due to overfilling will slow or prevent fluid movement. If overfilling occurs,
change the filter immediately.
5.5. Support
The Midi Plus also features an attached
support for placing the unit on the table
between the dispensing routines with a
pipet attached (Fig. 4).
6. OPERATING THE MIDI PLUS
6.1. Adjusting the operating speed
Select the desired speed by turning the linear
speed adjustment wheel (Fig. 5). The speed
selection can be easily accessed as the height of
the indicator column corresponds to the selected
speed.
Note: The aspiration and dispensing speeds
can be fine-tuned during operation by applying
a varying amount of finger pressure to the
operating buttons.
6.2. Inserting a pipet
Gently push a pipet into the silicone adapter and ensure that it fits securely.
To insert the pipet safely, hold the Midi Plus from above the nose cone and
the pipet from the top end of the tube.

7
6.3. Aspiration
1. Select a speed and fill the pipet by pressing the aspirating button. Fill
the pipet just above the desired level.
2. Remove the pipet from the sample container by drawing it up against
the inside wall of the container.
3. Adjust the volume of the sample by pressing the dispensing button until
the meniscus is at the required level.
6.4. Dispensing
The Midi Plus offers two different dispensig modes:
1. If the dispensing button is pressed only up to a point where a check can
be felt, the dispensing function will be based on the force of gravity and
the liquid will simply flow out.
2. Pressing the dispensing button further down engages the motor and
activates the blow-out function.
Note: Finger pressure can be varied to fine-tune the speed within each
mode.
6.5. Other pipetting recommendations
• Use the instrument within the limits of its chemical resistance.
• Never use with solvents the vapours of which are incompatible with the
MidiPlus materials.
• Never use with highly flammable liquids.
• Observe the reagent manufacturer’s safety information.
• Never use the instrument in an atmosphere with a danger of
explosion.
• Never use force with the Midi Plus.
• Should the instrument fail to function properly, stop pipetting and check
the Trouble Shooting section.
• Use only the spare parts and accessories recommended by the
manufacturer.
• Operational and storage temperatures +10°C to +35°C.

8
Fig. 6
2.
3.
1.
7. STORAGE
The Midi Plus features an attached support which can be used if there
is a need to place the unit on the table with a pipet attached between
dispensing routines. However, the Midi Plus should not be stored for a
long period of time without removing the pipet. It is also recommended to
disconnect the Midi Plus from the AC-adaptor if the unit is not used for a
lengthy period of time.
8. MAINTENANCE
The Midi Plus has been designed for easy in-house maintenance. However,
Biohit also provides complete servicing and repair including a service
report and a performance certificate. Please return your Midi Plus to the
local representative for repair. Before returning it, make sure that it is free
from all contamination.
Note: Please advise the service representative of any hazardous materials
which may have come to contact with your Midi Plus.
8.1. Decontamination
To decontaminate, lightly spray the outside of the Midi Plus with the Biohit
Proline Biocontrol decontamination spray (cat.no 724004, 5 l) and wipe dry with
a clean cloth. The nose cone and the silicon adapter can also be disassembled
(see 7.2.) and placed into a beaker containing Biohit Proline Biocontrol and
left there for at least 30 minutes for a complete decontamination. These parts
should then be rinsed with distilled water and dried.
8.2. Changing the nose cone, silicone
adapter and filter
To change the nose cone, silicon adapter and filter,
first press the nose cone lock release button (Fig.
6), rotate the nose cone anticlockwise and pull out
the nose cone and the silicon adapter. The filter can
be removed by simply pulling it out once the nose
cone and the silicon adapter have been disengaged.
Position the new filter with the coloured side upwards.
To reassemble, insert the adapter and nose cone and
twist the nose cone gently clockwise. Both the nose
cone and silicon adapters are autoclavable (121 °C,
1 atm).

9
Note: It is recommended to change the silicon adapter every six months,
or when necessary, to prevent a loss of vacuum. Spare adapters can be
ordered from your local Biohit distributor.
Silicon adapter spare parts:
Cat. No Product Qty.
712893 Standard silicon adapter for Biohit Midi Plus 1 pc
712910 5 ml silicon adapter for Biohit Midi Plus 1 pc
712911 10 ml silicon adapter for Biohit Midi Plus 1 pc
Nose cone spare parts (PVDF):
Cat. No Product Qty.
712713 Standard nose cone for Biohit Midi Plus 1 pc
712711 5 ml nose cone for Biohit Midi Plus 1 pc
712712 10 ml nose cone for Biohit Midi Plus 1 pc
Note: The Midi Plus cannot be operated without a filter. Wetting of filter due
to overfilling will slow or prevent fluid movement. If overfilling occurs, change
the filter immediately. Both sterile and non-sterile filters are available.
Cat. No Product Qty.
712912 Filter for Biohit Midi Plus, non-sterile 5 pcs
712913 Filter for Biohit Midi Plus, sterile 1 pc
Note: If there is any unwanted leakage after the Midi Plus has been
disassembled, carefully check that all the components have been securely
reattached.
Note: Only use the original filters supplied by the manufacturer.
8.3. Changing the batteries
If the battery does not hold a sufficient charge for the proper operation
of the Midi Plus follow these steps to replace the
battery:
1. Press the two release buttons towards each
other. Pull out the back cover to expose the
battery compartment (Fig. 7).
2. Insert the batteries according to the markings
inside the battery compartment. The positive
(+) end of the battery must be placed against
the (+) mark inside the compartment etc. (Fig.
8). Fig. 7

10
3. Replace the back cover.
4. Dispose of the batteries appropriately.
Note: Always replace the complete set of
batteries. Only use the original batteries
supplied by the manufacturer.
9. TROUBLE SHOOTING
10. WARRANTY INFORMATION
The Biohit Midi Plus is warranted for two years against defects in materials
and workmanship (except the batteries). Should your Midi Plus fail to
function according to specifications at any time, please contact the local
Biohit representative immediately.
ANY WARRANTY WILL, HOWEVER, BE DEEMED AS VOID IF FAULT
IS FOUND TO HAVE BEEN CAUSED BY MALTREATMENT, MISUSE,
UNAUTHORIZED MAINTENANCE OF SERVICE OR NEGLIGENCE OF
REGULAR MAINTENANCE AND SERVICE, ACCIDENTAL DAMAGE,
INCORRECT STORAGE OR USE OF THE PRODUCTS FOR OPERATIONS
OUTSIDE THEIR SPECIFIED LIMITATIONS, OUTSIDE THEIR
SPECIFICATIONS OR CONTRARY TO THE INSTRUCTIONS GIVEN IN
THIS MANUAL.
Problem
Reduced aspiration
capacity or the Midi
Plus blocked
Pipet drips
Reduced operating
time
Cause
Filter blocked, dirty
or damaged
Batteries low
Pipet not securely
attached
Silicon adapter or
nose cone loose
Silicon adapter or
pipet damaged
Batteries worn
Solution
Replace the filter
Recharge
Reattach
Reassemble / change
silicon adapter
Replace
Replace batteries
Fig. 8
+-

11
Each Biohit Midi Plus is tested before shipping by the manufacturer. The
Quality Assurance Procedure guarantees that the Midi Plus you have
purchased is ready for use.
Each Biohit Midi Plus is CE marked, fulfilling the requirements of the EN
55014, 1993 / EN 55104, 1995 / ISO 13485: 2003 and IVD Directive (98/79/
EC).
11. RECYCLING INSTRUCTION (WEEE)
In compliance with European Directive, WEEE (2002/96EC) on
waste and reducting of hazardous substances in electical and
electronic equipments, this device must not be recycled as
unsorted municipal waste. Instead this device must be collected
separately in accordance the local recycling regulations. The
solid bar used in conjuction with the crossed-out wheeled bin
indicates that the product was put on the European market
after 13 August 2005.

12
Notes

Nose cone, old blue 25 ml: 712909 10 ml: 712894 5 ml : 712908
Battery cover 712119
Support 712121
Body housing, 712118
Main board, 712117
Battery set, 3 pcs, 712991
Silicon adapter, Standard: 712893 10 ml: 712911 5 ml: 712910
Pump speed adjustment assembly, 712111
Tubing set, 712112
Pump assembly, 712113
Connection valve, 712114
Hydrophobic filter 0.45μm:
nonsterile (5pcs):712912 sterile (1 pc): 712913
Operating button assembly 1, 712115
Operating button assembly 2, 712116
Screw set, 712122
Spare Parts:

CHINA
Biohit Biotech Co., Ltd.
Tel: [phone]
Fax: [phone]
[email protected]
FRANCE
Biohit SAS
Tel: [phone]
Fax: [phone]
[email protected]
GERMANY
Biohit Deutschland GmbH
Tel: [phone]
Fax: [phone]
[email protected]
Biohit Oyj
Headquarters
Laippatie 1,
00880 Helsinki,
Finland
Tel: [phone]
Fax: [phone]
[email protected]
www.biohit.com
400502.05 • 10/2010 • © Biohit Oyj
JAPAN
Biohit Japan Co., Ltd.
Tel: [phone]
Fax: [phone]
[email protected]
RUSSIA
Biohit OOO, Saint Petersburg
Tel: [phone]
Fax: [phone]
[email protected]
U.K.
Biohit Ltd.
Tel: [phone]
Fax: [phone]
[email protected]
U.S.A.
Biohit Inc.
Tel: [phone]
Tol Free: 800-92 0784
Fax: [phone]
[email protected]
Midi Plus
Instruction Manual
Bedienungsanleitung
Mode d’emploi
Manual Usaria
Instruzioni d’impiego
Bruksanvisning
Käyttöohje
All information contained in this publication is current at the time of publication and
whilst the greatest care has been taken over its compilation, Biohit is not responsible
for any errors or omissions and reserves the right to make changes without notice. All
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