VWR 700-1373 User manual

300V HC (High Current), 2A, 300W
Electrophoresis Power Supply
This product is for research only
Version 1.1
Issued: 28,1.2022
European Catalogue Numbers:
Euro Plug: 700-1373
UK Plug: 700-1374
INSTRUCTION MANUAL
16

Contents
1. Introduction and Warning……………………….......... 3
2. Product Overview.........……………….........................4
3. Symbols and Conventions …………………………… 5
4. Specifications.………………………….…....................5
5. Installation….…………………………………..………..6
6. Warnings……………..………………………................6
7. Operating Guide.……………………...…………....…..7
8. Overview of Electrical Principles……….……………..9
9. Maintenance……………………………………………10
10. Troubleshooting………………….…….....................11
11. Technical Service……………….……......................11
12. Warranty ………………………….……....................12
13. Disposal ……….………………….…........................13
13. VWR Contact ……….………………...…..................14
United States
Europe
VWR International, LLC
VWR International bvba
100
Matsonford Rd
Researchpark Haasrode 2020
Radnor, PA 19087
Geldenaaksebaan 464
800
-932-5000
B
-3001 Leuven
http://www.vwr.com
+ 32 16 385011
http://be.vwr.com
LegalAddress of Manufacturer:
Country of origin: USA
2
Italy
VWR International S.r.l.
Via San Giusto 85
20153 Milano (MI)
Tel.: [phone]-
487791
Email: [email protected]
The Netherlands
VWR International B.V.
Postbus 8198
1005 AD Amsterdam
Tel.: [phone]
Email: [email protected]
Norway
VWR International AS
Brynsalleen 4
0667 Oslo
Tel.: [phone]
Email: [e-mail]
Poland
VWR International Sp. z o.o.
Limbowa 5
80-175 Gdansk
Tel.: [phone]
Email: [email protected]
Portugal
VWR International - Material
de Laboratório, Lda
Centro Empresarial de
Alfragide
Rua da Indústria, nº 6
2610-088 Amadora
Tel.: [phone]
Email: [email protected]
Singapore
VWR Singapore Pte Ltd
18 Gul Drive
Singapore 629468
Tel: [phone]
Email: [email protected]
Spain
VWR International Eurolab S.L.
C/ Tecnología 5-17
A-7 Llinars Park
08450 - Llinars del Vallès
Barcelona
Tel.: [phone]
Email: [email protected]
Sweden
VWR International AB
Fagerstagatan 18a
163 94 Stockholm
Tel.: [phone]
Email: [email protected]
Switzerland
VWR International GmbH
Lerzenstrasse 16/18
8953 Dietikon
Tel.: [phone]
Email: [e-mail]
UK
VWR International Ltd
Customer Service Centre
Hunter Boulevard
Magna Park
Lutterworth
Leicestershire
LE17 4XN
Tel.: [phone]
Email: [email protected]
15

14
1. Introduction
Thank you for purchasing the VWR 300V/2A High Current
Electrophoresis Power Supply with touch screen control.
This operating manual includes a product introduction, and
important operating and safety information. Before using the
power supply, please read this manual in its entirety to
understand the operation and safety warnings. Keep this
manual for future reference.
Please check the contents when opening the box, and if there
are any parts missing, damaged, or incorrect, please contact
VWR at 1-800-932-5000.
The VWR 300V HC is a DC Power Supply for electrophoresis
separations. It is designed for laboratory research applications.
The power supply has 4 sets of outputs that accept standard
electrical leads with banana plugs and should only be used with
electrophoresis tanks that incorporate sufficient safety features
to prevent electric shock. Some types of shielded plugs may
not fit into the output jacks, and in this case an adapter
3
WARNING:
This power supply outputs high voltage and current and should
be used only by experienced laboratory personnel that
understand how to safely operate the instrument. Incorrect
usage can present a shock or electrocution hazard.
France
VWR International S.A.S.
Le Périgares –Bâtiment B
201, rue Carnot
94126 Fontenay-sous-Bois cedex
Tel.: [phone]* (national)
Tel.: [phone] (international)
Email: [email protected]
Germany
VWR International GmbH
Hilpertstrasse 20a
D - 64295 Darmstadt
Freecall: 0800 702 00 07
Tel.: [phone] (international)
Email: [email protected]
Hungary
VWR International Kft.
Simon László u. 4.
4034 Debrecen
Tel.: [phone]
Email: [email protected]
India
VWR Lab Products Private Limited
No.139. BDA Industrial Suburb,
6th Main, Tumkur Road,
Peenya Post,
Bangalore, India –560058
Tel.: [phone]
Email: vwr_indi[email protected]
Ireland / Northern Ireland
VWR International Ltd
Orion Business Campus
Northwest Business Park
Ballycoolin
Dublin 15
Tel.: [phone]
Email [email protected]
Austria
VWR International GmbH
Graumanngasse 7
1150 Vienna
Tel.: [phone]
Email: [email protected]
Belgium
VWR International bvba
Researchpark Haasrode 2020
Geldenaaksebaan 464
3001 Leuven
Tel.: [phone]
Email: [e-mail]
China
VWR International China Co., Ltd
Shanghai Branch
Room 256, No. 3058 Pusan Road
Pudong New District
Shanghai, 20012388
Fax: +86-21
Tel.: [phone] 588 01
Email: [email protected]
Czech Republic
VWR International s. r. o.
Veetee Business Park
Pražská 442
CZ - 281 67 Stríbrná Skalice
Tel.: [phone]
Email: [e-mail]
Denmark
VWR International A/S
Tobaksvejen 21
2860 Søborg
Tel.: [phone]
Email: [email protected]
Finland
VWR International Oy
Valimotie 9
00380 Helsinki
Tel.: [phone]
Email: [email protected]
14. VWR Contact

2. Product Overview
413
Touch Screen
Control and Display
4 Pairs of
Electrical Outputs
AC Power Inlet,
On/Off switch
and Fuse
FRONT
REAR
Rating, Serial #
Label
Cooling
Fan
13. Equipment disposal
This equipment is marked with the crossed out wheeled bin
symbol to indicate that this equipment must not be
disposed of with unsorted waste.
Instead it's your responsibility to correctly dispose of your
equipment at lifecycle -end by handling it over to an
authorized facility for separate collection and recycling. It's
also your responsibility to decontaminate the equipment in
case of biological, chemical and/or radiological
contamination, so as to protect from health hazards the
persons involved in the disposal and recycling of the
equipment.
For more information about where you can drop off your
waste of equipment, please contact your local dealer from
whom you originally purchased this equipment.
By doing so, you will help to conserve natural and
environmental resources and you will ensure that your
equipment is recycled in a manner that protects human
health. Thank you

5
4. Specifications
VWR 300V/2A High Current Power Supply
Output Voltage 10 to 300 VDC, in 1 V increments
Voltage Accuracy +/- 2% of displayed value or 3V
(whichever is greater)
Output Current 4 to 2000mA (2A), in 5 mA increments
Current Accuracy +/- 2% of displayed value or 5mA
(whichever is greater)
Maximum Power 300 Watts
Output Terminals 4 Pair, wired in parallel
Timer 1 min to 20 hours, or Continuous
Control Panel Capacitive touch screen
Display Color TFT, LCD
Fuse 250V 2.0A, 5x20mm,Type T
Operating Temp 0 –40°C
Humidity 0 –95%
Dimensions
(W×D×H) 3.5 x 5 x 8.5 in / 9 x 13.5 x 22 cm
Net weight 3.3 lbs / 1.5 kg
Input Electrical 100 to 240 VAC, 50/60Hz
3. Symbols and Conventions
CAUTION This symbol indicates a potential risk and
alerts you to proceed with caution
CAUTION This symbol indicates the presence of high
voltage and warns the user to proceed with caution
VWR warrants that this product will be free from defects in
material and workmanship for a period of two (2) years from
date of delivery. If a defect is present, VWR will, at its option
and cost, repair, replace, or refund the purchase price of this
product to the customer, provided it is returned during the
warranty period. This warranty does not apply if the product
has been damaged by accident, abuse, misuse, or
misapplication, or from ordinary wear and tear. If the
required maintenance and inspection services are not
performed according to the manuals and any local
regulations, such warranty turns invalid, except to the
extent, the defect of the product is not due to such non-
performance.
Compliance with local laws and regulations
The customer is responsible for applying for and obtaining
the necessary regulatory approvals or other authorisations
necessary to run or use the Product in its local environment.
VWR will not be held liable for any related omission or for
not obtaining the required approval or authorisation, unless
any refusal is due to a defect of the product.
12
12. Warranty

6. Warnings
To avoid electrical shock, do not use this product with
wet hands and ensure that all electrical leads being
used are dry. Only use electrical leads that offer
sufficient protective insulation and gel boxes that have
appropriate safety lid systems and are rated for the
appropriate voltage and amperage levels.
Please carefully read this instruction manual before
operation to avoid any personal injury. Only trained
laboratory personnel should operate the system.
Do not attempt to open or repair the Power Supply.
Contact VWR for service.
Always use the Power Supply in an environment with
low humidity and low dust, also keep it away from
water, direct sunlight / strong light, corrosive gas, high
magnetic fields, heaters, fires and other heat sources.
11
5. Installation
Place the power supply on a smooth, level surface in an
area where it will not contact liquids or chemicals.
Connect one end of the included power cord to the
instrument and the other end to an appropriate electrical
outlet. Check the Rating/Serial # label on the rear of the
power supply for the required electrical input.
Always leave 2 inches of space on all sides of the power
supply to allow for proper ventilation.
6
10. Troubleshooting
Problem Causes Measures
No display Power not
connected.
Fuse blown.
Check cord connection
and power supply,
Unplug and re-attach
power cord.
Check and replace fuse
at power inlet.
Voltage or
Amperage setting
not reached
Maximum wattage
exceeded
Resistance of the load
(gel tank buffer) is too
low. Change buffer
concentration.
NO LOAD
displayed
Connection wires
not attached
properly. Buffer is
not conductive.
Check wire
connections. Check
buffer concentration.
Web Resources
Visit the VWR website at www.vwr.com for:
• Complete technical service contact information
• Access to the VWR Online Catalogue, and information about
accessories and related products
• Additional product information and special offers
Contact us For information or technical assistance contact your
local VWR representative or visit. www.vwr.com.
11. Technical Service

7
10
7. Operating guide
7.1 Touch Screen Control
Up/Down
Value
Adjust
Buttons
Adjustable
Parameters
Operation
Buttons
Status
7.2 Setting Parameters
The VWR 300V High Current Power Supply has 3 main
parameters that can be adjusted: Run Time (TIME), Voltage
(VOLTAGE), and Current (mAMP).
(See section 7 for an overview of Voltage, Current,
Resistance, and Power)
Press the parameter box to adjust the value. The selected
parameter box will be highlighted. Press the UP/DOWN
arrows to change the value.
Adjust parameters (TIME, VOLTAGE, mAMP) as required for
the electrophoresis application.
Current (I) =
Resistance (R) =
Power (W) = Current (I) x Voltage (V)
Resistance (R)
Voltage (V)
_________________
Voltage (V)
_________________
Current (I)
9. Maintenance
Always disconnect the power cord for cleaning.
When cleaning the surfaces of the instrument,
use a lightly dampened cloth with mild detergent
if needed. Do not use any corrosive solutions
that could damage plastic.
Use caution when cleaning near the housing
vents. Do not allow liquid to enter the power
supply.

89
7.3 Constant Voltage / ConstantAmperage
The Power Supply can be set to run with constant voltage
or constant amperage output, with the non-constant
parameter set as a limit.
Press the box “CONSTANT …” to switch between
“CONSTANT CURRENT” and “CONSTANT VOLTAGE”
running modes.
In constant voltage mode, the power supply will output the
set voltage, and the mAmp current value will fluctuate
(“float”) depending on the resistance of the load, up to a
maximum of the mAmp current setting that has been
chosen. The buffer concentration and size of the
electrophoresis gel box will dictate the resistance.
7.4 Automatic Cross Over
During an electrophoresis run, the power supply will
attempt to maintain the constant voltage or amperage
setting, depending on which parameter is set to
“CONSTANT”.
If, during a run, the non-constant parameter setting (limit) is
met due to the resistance of the load, the power supply will
automatically “cross over” so the non-constant parameter
will now be the constant and limiting parameter. A red
outline will appear around the new “constant” value.
In CONSTANT CURRENT mode, the power supply will
output the set mAmp current parameter, and the voltage
will fluctuate relative to the resistance of the load (buffer
concentration in the attached electrophoresis tanks) up to a
maximum of the voltage setting that has been chosen.
7.5 Maximum Power Limit
The VWR 300V/2APower Supply has a maximum power
output of 300 Watts.
Per Ohms Law:
Power (P) = Current (I) x Voltage (V)
If the maximum power is reached during an electrophoresis
run, the non-constant parameter will be limited to prevent
exceeding the maximum power output.
CAUTION: It is not recommended to run the power
supply at or near the maximum wattage for long periods, as
this can cause the power supply and gel tank to get hot.
Most standard electrophoresis buffer concentrations will not
have such low resistance that the current and voltage level
will come close to the maximum power limit.
8. Overview of Electrical Principles
Definitions:
Voltage: The amount of potential energy between two points
in a circuit.
Current: The time rate of flow of an electric charge, measured
in amperes.
Resistance: A material’s opposition to the flow of electric
current, measured in Ohms.
Power: The rate at which electric energy is transferred by an
electric circuit. Electric power is expressed in units of watts,
one watt is equal to one joule per second.