MS 250V / MS 300V
Power Supply
Instruction Manual
Catalog Nos.
MP-250V
MP-300V
www.majorsci.com
service@majorsci.com
Version 0 1A
October 20 , 2009
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Un Packing list
MP-250V or MP -300V:
- 1 x MP-250V or MP -300V
- 1 x US Plug Power Cord or
1 x Euro Plug Power Cord or
1 x UK Plug Power Cord or
1 x Israel Plug Power Cord
- 1 x MS 250V / MS 300V Power S upply Instruction M anual
Major Science is liable for all missing or damaged parts / accessories
within 7 days after customer received this inst rument package. Please
contact Major S cience immediately regarding this issue. If no response
within such time period from consignee party, that wi ll be consignee
party’s whole responsibility.
2
Packing list
MP-250V or MP -300V:
- 1 x MP-250V or MP -300V
- 1 x US Plug Power Cord or
1 x Euro Plug Power Cord or
1 x UK Plug Power Cord or
1 x Israel Plug Power Cord
- 1 x MS 250V / MS 300V Power S upply Instruction Manual
Signed:
Date:
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Table of Contents
Un packing list
1
Packing list
2
Warning
4
Safety Information
5
Product Specifications
7
Product Description
8
Introduction
Overview
Controls and Features
9
9
10
Installation Instructions
11
Operation Instructions
12
Troubleshooting Guide
14
Maintenance
17
Ordering Information
17
Warra nty
18
4
Warning
Major S cience MS 250V / MS 300V power supply series has been tested and
found to comply with the limits for the CE regulation . Also, M S 250V / MS 300V
power supply series is RoHS compliant to deliver confident product, which
meets the environmental directive . These limits are designed to provide
reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This power supply series generates,
uses, and can radiate radio frequency e nergy, and if not installed and used in
accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this power supply series in a residential
area is likely to cause harmful interference in which case the us er will be
required to correct the interference at their expense. Changes or modifications
not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment. It is strongly recommended the user
to read carefully the following points before this equipment is operated.
1. Read and follow carefully the manual instructions.
2. Do not alter the power supply series . Failure adhere d to these directions
could result in personal and/ or laboratory hazards, as well as invalidate
equipment warranty.
3. Use a properly grounded electrical outlet with correct voltage and current
handing capacity.
4. Disconnect from power supply before maintenance and servicing. Refer
servicing to qualified personnel.
5. In the event , solution is acc identally spilled into the instrument , disconnect
grounded plug and the user must carry out ap propriate procedure or
contact Major S cience or the representative. Replace damaged parts.
6. Do not use in the presence of flammable or combustible material; fire o r
explosion may result. This device contains components, which may ignite
such materials.
7. Refer maintenance and servicing to qualified personnel.
8. Ensure that the system is connected to electrical service according to
local and national electrical codes. Fa ilure to properly connect ion may
create fire or shock hazard.
9. Ensure the appropriate used materials and correct operation to avoid
possible hazards of explosion, implosion or release of toxic or flammable
gases arising from the materials being over heated.
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10. The unit shall be operated Only by qualified personnel.
Safety Information
Use the high level of precautions a gainst any electrical device. Before
connecting with the electrical supply, check the supply voltage is within the
range stated at the rating l abel, and this device must be earthed. Place the unit
in a safe and dry location and MUST NOT touch things in the surrounding.
Also d o follow the safety precautions for chemicals and dangerous materials .
If needed, please c ontact qualified service represe ntative or contact
service@majorsci.com
Environmental Conditions
Ensure the instrument is installed and operated strictly in the following
conditions :
- ≤95% RH,
- 75 KPa -106 Kpa,
- Altitude not to exceed 2000 meters
- Ambient ~ 40℃ operating temperature.
Avoiding Electrical Shock
Follow the guidelines below to ensure safe operation of the unit.
MS 250V / M S 300V power supply series has been designed to use with
shielded wires thus minimizing any potential shock hazard to the user. Major
Science recommends against the use of unshielded wires.
To avoid electrical shock:
1. In the event of solution accidentally spilled into the instrument, i t must be
dried out for a period of time , at least 2 hours, and restore d to NORMAL
CONDITION before each operation.
2. NEVER connect or disconnect wire leads from the power jacks when the red
indicator light at the Start/Stop key is light.
3. WAIT at least 5 seconds a fter stopping a run before handling output leads or
connected apparatus.
4. ALWAYS make sure that hands, work area, and instruments are clean and
dry before making any connections or operating the power supply.
5. ONLY connect the power cord to a properly 3-prong grounded AC outlet ,
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using the power cord provided with the power supply .
Avoiding Damage to the Instrument
1. Do not attempt to operate the device if it is damaged.
2. Protect this unit from physical damage, corrosive agents and extreme
temperatur es (direct sunlight etc).
3. For proper ventilation and safety c oncerns , keep at least 10 cm of space
behind the instrument, and at least 5 cm of space on each side.
4. Do not operate the power supplies in high humidity environments (> 95%),
or where conde nsation may occur.
5. When the power supply series is taken into a cold room environment, the
unit can be operated immediately. However, when the power supply series is
removed from the cold room environment, let the unit equilibrate to room
temperature fo r a minimum of 2 hours before using it.
6. Prior to apply any cleaning or decontamination methods other than
manufacturer ’s recommendation, users should check with the
manufacturer ’s instruction to confirm if the proposed method will not damage
the equipme nt.
Equipment Operation
Follow the guidelines below to ensure safe operation of the unit :
1. It must be checked the displayed figure to see if it is in the normal condition
for use before using this unit.
2. NEVER access dangerous chemistry or other mate rial to prevent possible
hazards of explosion and damage.
Symbol s
The symbol s used on MS 250V / MS 300V Power Supply are explained below.
Used on MS Power Supply to indicate an area where a potential
shock hazard may exist.
Used on M S Power Supply to indicate a warning. Consult the manual
to avoid possible personal injury or instrument damage.
Used on M S Power Supply to indicate a disposal instruction.
DO NOT throw this unit into a municipal trash bin when this unit has
reached the end of its l ifetime. To ensure utmost protection of the
global environment and minimize pollution, please recycle this unit.
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Product Specifications
Output Voltage / Inc
2~250V / 1V for MP -250V
2~300V / 1V for MP -300V
Output Current / Inc
1~700mA / 1mA
Max. Wa tt
150W
Operating Constants
Voltage or Current
Control
Microprocessor Controller
Terminator Pairs
4 pairs
Timer
1~999 mins with alarm, continuous
Safety Device
No Load detect ion
Leakage detect ion
Over temperature protection
Over load protection
Shrouded plugs and sockets
Sudden load change detection
Crossover
Yes
Operating Temperature
Ambient to 40°C
Unit Dimension
190 x 305 x 95 mm (W x L x H)
Construction Material
Flame retardant ABS faceplate and aluminum
Rated Voltages
100 ~ 240 Vol t; 47/60 Hz
Stackabl e
Yes
Weight
approx . 2.5 kg
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Product Description
Major S cience MS 250V (Cat. No. MP -250V) and MS 300V (Cat. No. MP -300V)
power suppl ies are designed to meet most electrophoresis needs in a personal,
single, easy to use u nit. This manual describes the setup and operation of MS
250V / 300V Power Supply , including important information on safety and
maintenance of the unit. MS 250V and MS 300V power suppl ies are capable of
running horizontal & vertical electrophoresis , and two-dimension al
electrophoresis SDS-PAGE applications. In addition, a Timer with alarm
function is also equipped in the unit , and so is Pause function . Furthermore ,
the powerful specifications plus four pairs of terminator pairs could be used for
multi elec trophoresis units simultaneously . The stackable case design is
another feature to save bench top space.
Major S cience M S 250V power supply and M S 300V power supply both
provide Constant Voltage or Constant C urrent to instruments used in
electrophoresis. 4 pairs of terminator and the much powerful specification
equipped ena ble the maximum capability of MS 250V / MS 300V power supply
series compared to other existing similar product on the market.
Features o f MS 250V power supply:
- Compact size
- Advance d capacity: 150W, 700mA, 250V
- Microprocessor controller
- Constant voltages and constant currents
- Four pairs of outlet terminator
- Timer with alarm function
- Advanced safety devices
- Stackab le case
- Wide applications for DNA, RNA and
protein elect rophoresis
Features of M S 300V power supply:
- Compact size
- Advanced capacity: 150W, 700mA, 300V
- Microprocessor controller
- Constant voltages and constant currents
- Four pairs of outlet terminator
- Timer with alarm function
- Advanced safety devic es
- Stackab le case
- Wide applications for DNA, RNA and
protein electrophoresis
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Introduction
Overview
Major S cience M S 250V and 300V Power Supplies are recognized as one o f
the most advanced power supplies equipped with outstanding specifications to
cover the majority of electrophoresis applications on the market. Sufficient and
accurate output voltages, four pairs of terminator, compact size , RoHS and CE
compliance for safety concerns can deliver accurate and reliable experimental
results from one experiment to another. Both of them are perfectly designed to
accomplish with any of electrophoresis systems/ units on the market.
Front of Unit
(Example of MS 250V power supply)
Note: MS 300V power supply shares the same configurations
Rear of Unit
(Example of M S 250V power supply)
Note: M S 300V power supply shares the same configurations
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Controls and Features
Please refer to Figures on the following page for the location of the following
controls and features.
MS 250V Power Supply
Cat. No.: MP -250V
MS 300V Power Supply
Cat. No.: MP -300V
Front Control Panel
1. Key – to increase either Voltage or Current or Time value
2. Key – to decrease either Voltage or Current or Time value
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3. Key – to activate or stop the unit
4. Key – to temporarily interrupt power to an operation in progress
without terminating electrophoresis and to resume power
after pausing without resetting the timer.
5. Key – to select Voltage value
6. Key – to select Current value
7. Key – to set or select Timer mode
Installation Instructions
Major S cience MS 250V / MS 300V Power Supply series is actually an already
installed instrument. As long as it is placed on a sturdy and level surface in a
safe, dry place , and is further connect ed with well -prepared electrophoresis
system, it is ready for operation.
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Operation Instructions
1. Place MS 250V / M S 300V Power Supply series on a sturdy and level
surface in a safe, dry place , away from laboratory traffic.
2. Ensure that the AC power switc h is OFF, and then plug the three -pronged
power cord into a grounded three -prong AC outlet of the appropriate voltage
(110V to 240V as indicated on the rating sticker near the AC cord on the
back of the unit).
3. Turn the AC power ON by the switch on the rear.
4. Connect the DC output jacks from the electrophoresis unit; insert the red
lead (+) into the red output jack, and the black lead ( -) into the black output
jack.
5. Press Key, and then press Key or Key to select the
suitable voltage.
6. Pre ss Key, and then press Key or Key to select the
suitable current, alternatively .
7. Press Key, and then press Key or Key to adjust timer in
minute format upon you r request if setting time is required . It will auto stop
while timer is up (count down).
Note: When timer is set as “0”, it means continuous operation.
8. Press Key to start the run. , the LED is lit.
9. After pressing Key to start the run, if it is Constant Voltage , , the
LED is flashing. Alternatively, if it is Constant Current, , the LED is
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flashing.
10. Press Key to temporarily interrupt the run if necessary. , the
LED is flashing. Press Key to restart the run.
11. Press Key again to stop the unit at any time if necessary.
12. When the run is completed, opera tion stops with alarm and the screen
shows . Press Key to terminate a timed run, and Turn the AC
power OFF by the switch on the rear .
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Troubleshooting Guide
Many operating problems may be solved by carefully reading and following the
instructions i n this manual accordingly. Some suggestions for troubleshooting
are given below. Should these suggestions not resolve the problem, contact
our SERVICE DEPARTMENT or a distributor in your region for assistance. If
troubleshooting service is required, please include a full description of the
problem .
Problem
Cause
Solution
No Display / lights
No AC power
Check if M S power supply is unplugged, or
AC power source problem
AC power cord is not
connected
Check AC power cord connections at both
ends. Use the co rrect cords.
The fuse has blown
Replace the fuse
Repeated fuse broken
Hardware failure
Contact Major S cience service department
Operation stops with
alarm: The screen
displays
Electrophoresis leads are
not connected to the
power supply or to the
electrophoresis unit(s), or
there is a broken circuit in
the electrophoresis cell
Check the connections to the power supply
and on your electrophoresis cell to make sure
the connection is intact; check condition of
wires in electrophoresis unit. Close the cir cuit
by reconnecting the cables. Press
START /STOP to restart the run.
High resistance due to
tape left on a pre -cast gel,
incorrect buffer
concentration, or incorrect
buffer volumes in the
electrophoresis cell
Correct the condition by making sure the tap e
is removed from the pre -cast gel, buffers are
prepared correctly, and the recommended
volume of buffer is added to the
electrophoresis unit.
Operation stops with
alarm:
Display shows
Over Current
- Verify that the running buffer is correct.
- Verify the all cables are attached correctly
- Turn the Power switch off and on again;
restart application.
- If you cannot restart the instrument, turn off
the power, disconnect the power cord from
the outlet, and contact Technical Service.
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Operation stops with
alarm:
Display shows
Over Voltage
- Verify that the running buffer is correct.
- Verify the all cables are attached correctly
- Turn the Power switch off and on again;
restart application.
- If you cannot restart the instrument, turn off
the power, disconnect the power cord from
the outlet, and contact Technical Service.
Operation stops with
alarm:
Display shows
Ground leak detected
during run
Check the electrophoresis system for
improper grounding. Restart the power supply
by turning the Power switc h off and on.
Operation stops with
alarm:
Display shows
Power supply is
overheating
- Turn off power supply. Check for sufficient
airflow around the power supply fan. After
cooling down, restart the power supply by
turning the Power switch to the on p osition.
- If you cannot restart the instrument, turn off
the power, disconnect the power cord from
the outlet, and contact Technical Service .
Operation stops with
alarm:
Display shows
Bad connections for
terminal connectors or
damaged wires or
damaged platinum wires
Check all the connections to terminators,
cables, wires, and gel tanks
Operation stops with
alarm:
Display shows
and
countdown
Power supply is getting
restart ON
- Verify that the electrophoresis condition and
system is correct.
- Pay att ention to the own safety .
Encountering Problems
1. Check the troubleshooting section.
2. Call Technical Service or e -mail to service@majorsci.com
3. If the unit must be shipped back for repair, contact Major S cience or the
distributor for a Return Authorization Number and shipping instructions. The
unit will be repaired as quickly as possible and returned to you.
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Replacing the Fuse
For additional fuses, contact Major Science co. ltd.
To replace the fuse:
1. Turn off the main power switch on the rear of MS 250V or M S 300V Power
Supply and detach the power cord from the rear of MS 250V or M S 300V
Power Supply .
2. Open the fuse compartment located inside the Power Entry Module by
inserting a small flat blade screwdri ver into the slot below the ON/OFF
switch. Turn the screwdriver to gently pry open the fuse compartment.
Note : The fuse compartment will not open with the power cord in place.
3. Pull the fuse holder out of the compartment and inspect the fuse. If the fuse
is burned or there is a break in the fuse element, replace the fuse with an
identical type of fus e (2A/250V ~) as provided in the fuse holder (see figure
below).
4. Place the fuse holder back into the compartment.
5. Snap the cover closed.
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Mainte nance
MS 250V and 300V Power Supply series uses all solid -state components and
should require no maintenance or recalibration under normal use. The housing
may be cleaned with a dry cloth. If the unit must be returned for repair, contact
our SERVICE DEPAR TMENT or your local distributor for shipping instruction.
Ordering Information
MS 250V / MS 300V Power Supply
Cat. No.
Description
MP-250V
MS 250V Power Supply
MP-300V
MS 300V Power Supply
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Warranty
Major S cience warrants apparatus of its manufacture against defects in
materials and workmanship, under normal service, for two years from the
shipping date to purchaser . This warranty excludes damages resulting from
shipping, misuse, carelessness, or neglect. Major S cience ’s liability under the
warranty is limited to the receipt of reasonable proof by the customer that the
defect is embraced within the terms of the warranty. All claims made under this
warranty must be presented to Major S cience within two years following the
date of delivery of the product to the customer.
Manufacturer:
Major Science Co., Ltd.
Address:
No.7, Hwai -Der Street,
Pan -Chiao City, Taipei Hsien 22045 ,
Taiwan
T/ 886 -2-2256 -6980
F/ 886 -2-2256 -6942
Contact Information
Winpact Scientific, Inc.
Major Science Co., Ltd
Address
Address:
19959 Sea Gull Way
Saratoga, CA 95070
U.S.A
No.7, Hwai -Der Street,
Pan -Chiao City, Taipei Hsien 22045 ,
Taiwan
T/ 1-408 -366-9866
F/ 1-408 -446-1107
T/ 886 -2-2256 -6980
F/ 886 -2-2256 -6942
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MEMO
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