seward Stomacher User manual

World leaders in sample preparation
Stomacher® 400 EVO
User Manual

Intro
World leaders in sample preparation
Thank you for purchasing this Seward product
This manual contains operating instructions for the Stomacher® 400 Evo.
The Seward Stomacher® was developed in the early 70’s in response to ever- increasing demands for
sample preparation in a fast, consistent and efficient way. Since then, Seward have continually developed
the Stomacher® to maintain its position as the market leader ensuring exacting performance, high quality
and exceptional reliability.
This manual provides the user with all the information to install, operate and maintain the Seward
Stomacher®. Please read the manual carefully before using this equipment.
CAUTION: - This equipment should not be used if damaged in any way. If in doubt please contact your local
Seward authorised service centre.
Should any other questions arise please do not hesitate to contact the
Seward Customer Service Department on:-
Telephone: [phone]
E-mail: [email protected]
The Seward Stomacher® is a unique homogenising instrument in which the sample is blended within a
special disposable bag. The instrument acts on the bag in an action similar to the action of a stomach,
hence the name Stomacher®.
The instrument is comprised of an electric motor-driven worm gear unit with twin output shafts coupled to
flexible crank mechanisms, which in turn operate two reciprocating paddles. The paddles act on the flexible
plastic bag to create the blending forces termed the ‘stomaching’ action. An important feature of the
system is that the working parts do not come into direct contact with the sample being processed.
Protection from the moving parts inside the sample compartment is provided by a protective seal which
automatically closes the bag inside the paddle chamber. A cut-off switch ensures the unit cannot work
while the protective seal is open or the cover is missing.
Stomacher® is a registered Trademark and may not be used without the express permission of Seward Ltd.
www.seward.co.uk
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Seward is a part of the FermionX Group.

Contents
1. Control panel.............................................................................................3
2. Operation...................................................................................................4
3. Strip down...................................................................................................5
4. Eco bag operation................................................................................... 7
5. Paddle reset...............................................................................................8
6. Warnings/Cautions/Guidance................................................................ 9
7. Specifications.................................................................... .......................11
8. Bags & Accessories.................................. ...............................................12
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1. Control panel
Operation
1. Select program slot 1- 8 - press 7
2. Set parameters of speed and time
3. Press lock 4
4. Program will be retained after mains power is switched off
1. Start 2. Stop 3. Clear 4. Lock (Press 4 then 3 to open) 5. Adjust time (9 mins 55 secs in 5 second
increments) 6. Adjust speed - Slow, Medium or Fast 7. Program store - 8 program slots
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2. Operation
Drop Stomacher bag into the machine
Press the start button
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3. Strip down and clean
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Bag seal
Strike plate
Drip tray
Cover
Remove cover
Remove strike plate
5
CLEANING INSTRUCTIONS
DISCONNECT from mains when cleaning
DO NOT immerse or spray with water
Wipe with damp cloth or anti bacterial wipes
Use only non phenolic cleaning products

Strip down and clean
Remove bag seal
Pull paddles off
Pull drip tray off
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4. Eco bag operation
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Install small paddles
Install bag seal
Install bag platform and replace
strike plate
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5. Paddle reset
If the paddle shafts prevent the strike plate being
reattached then:
Reattach the bag seal
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C
Reattach the cover
Switch the machine off and on again at the
mains filter outlet
The machine will go through it’s set up processes
including levelling the paddles
Once it has done this, remove the cover,
reattach the strike plate and replace the cover

6. Warnings/Cautions/Guidance
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THIS EQUIPMENT MUST ONLY BE USED IN ACCORDANCE WITH THESE INSTRUCTIONS OR SAFETY PROTECTIONS
MAY BE IMPAIRED
ALWAYS USE THE POWER LEAD SUPPLIED. IF THIS IS REPLACED ENSURE THAT A POWER LEAD OF THE SAME RATING
IS EMPLOYED OR CONTACT THE MANUFACTURER
INSTALLATION QUALIFICATION
ENVIRONMENT AND SITING
Make sure the instrument has been acclimatised after transportation or storage by allowing it to stand 12 hours
at room temperature.
CAUTION to avoid minor injury take care when unpacking and lifting the unit to prevent injury.
Site the instrument on a solid level surface able to take its weight.
Site the instrument with sufficient space at the rear to allow the mains power switch to be accessed and the
power cable to be unplugged.
To isolate the unit switch off the mains power inlet at the rear and unplug the cable.
Only use the machine in areas free from aggressive/explosive chemical mixtures.
This equipment shall be connected to a supply containing a protective earth.
CERTIFIED STANDARDS
This instrument conforms to the following standards and is supplied fully tested by the manufacturer:
EMC Directive 2014/30/EU
Low Voltage Directive 2014/35/EU
Machinery Directive 2006/42/EC
IEC 61010-1:2010 Safety Requirement for Electrical Equipment for Measurement, Control and Laboratory Use
IEC 61010-10-051 ed.3.0(2015-03): Particular requirements for laboratory equipment for mixing and stirring
PAT testing should be carried out by a competent person after installation.
CALIBRATION
Stomacher® is supplied fully calibrated by the manufacturer using equipment traceable to national standards.
Calibration by the user directly following installation is not required.
Following the expiry of the warranty period service packages are available from your authorised dealer or from
Fermionx Limited.

STOMACHER® PROCESS
For best results only use Stomacher® Bag products.
Flammable solvents should NEVER be used in the machine.
Do not overload the machine with bags or load with items that may pierce bags. Contact the manufacturer for
advice on the suitability of samples.
Processing time can be set up to 9 minutes 55 seconds in 5 second increments.
Duty cycle 2 minutes with 45 seconds change over time at full speed.
The Stomacher will not restart after a fault or power interruption.
PERFORMANCE QUALIFICATION
REMOVAL OF THE REAR COVER OF THE MACHINE BY UNQUALIFIED PERSONNEL SHOULD NEVER BE ATTEMPTED.
THERE ARE NO USER SERVICEABLE COMPONENTS INSIDE.
Return to the manufacturer for repair.
Removal of the rear cover will invalidate the warranty.
ROUTINE MAINTENANCE
Wipe casing with damp cloth every month or as required with non-phenolic disinfectant solution. Do not apply
solvents. If in doubt please contact the manufacturer.
Apply mineral oil annually to the paddle shafts.
ERROR MESSAGES
These error messages may appear on the display and this is what they mean and what action should be taken.
“Levelling Error” - paddle level failed, contact the manufacturer.
“Cover Absent”, “Affix Cover” - front cover missing, replace the cover.
“Paddle Motor Error”, “Halting machine” - over current on paddle motor, the machine has stalled because it can
not cope with the load. Remove the bag and reduce the sample. Contact the manufacturer if error persists.
“Seal Error”, “Obstruction” - seal can’t close properly, look inside the paddle chamber to make sure there is no
obstruction and that the seal is mounted properly.
“Seal Error”, “No strike plate” - strike plate missing, replace the strike plate.
“Seal Absent”, “Affix Seal” - seal magnet not detected, check magnet is in position and replace seal.
Warnings/Cautions/Guidance
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7. Specifications
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Cat No. 0400/002
Dimensions H300mm x W310mm x D480mm
Weight (unpacked) 18.8kg
Supply voltage 100-240V
Supply frequency 47-63Hz
Max rated power 100W
Plug top fuse F5A (UK chord set)
Mains inlet fuse 1.0A, 250V, anti surge
Insulation Class 1 (Earthed)
Installation Over voltage category II
Pollution Pollution Degree 2
Disposable bag sizes Various
Minimum recommended
capacity 80ml
Maximun recommended
capacity 400ml
Maximum recommended
sample temperature 60° C
Recommended operating
ambient temperature
range
10-40°C
Recommended operating
relative humidity range 10-89%
Recommended maximum
operating altitude 2000m
Timer 9 minutes 55 seconds in 5 second
increments
Paddle speed
Slow - 150 rpm (400 equivalent)
Medium - 180 rpm (400 equivalent)
Fast - 210 rpm (400 equivalent)
Paddle clearance 4mm
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STOMACHER 400 EVO

8. Bags & Accessories
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BA6195 Bag opener for Stomacher 400 Eco bags
Contact Seward for further information on our range of products including the
Stomacher® 400 EVO, and see how much you could save on your consumable costs.
Stomacher 400 Eco Bags and Accessories
®
Stomacher 400 Standard Bags
for all Seward Stomacher 400 (EVO, Circulator and Classic)
®
®
for Seward Stomacher 400 EVO only
®
Product
Code
Description Test Volume Dimensions
(mm)
Bags per
pack
BA6241 Stomacher 400 Eco bag
(PATH.)
1:10 PATH Test
(25g:225ml) 177 x 200 500
BA6341 Stomacher 400 Eco bag
(TVC)
1:10 TVC Test
(10g:90ml) 155 x 200 500
Product
Code
Description Test Volume Dimensions
(mm)
Bags per
pack
BA6041 Stomacher 400 Classic
Bag 400ml 177 x 305 500
Full range of Stomacher® bags and accessories available at www.seward.co.uk/stomacher-bags/
®
®
®
®
®
To get the optimum performance from the Stomacher® EVO 400 we recommend that only genuine Seward
Stomacher® bags and accessories as shown in the table below, are used.

Contact Us
World leaders in sample preparation
Seward Limited
Technology Centre
Easting Close
Worthing
West Sussex, BN14 8HQ
United Kingdom
Phone [phone]
Email [email protected]
Seward Laboratory Systems Inc. (USA)
155 Keyland Court
Bohemia
NY 11716
USA
Phone [phone]
Email [email protected]
Our offices
www.seward.co.uk
Seward is a part of the FermionX Group.
FermionX GmbH
Münstertäler Straße 12
Eschbach
DE-79427
Germany
Email [email protected]