EPS – 300 X Power Supply

EPS – 300 X Power Supply
EPS – 300 X
Power Supply
Installation and Operation Manual
Version 1.0
*This instrument is intended for laboratory use only
EPS-300 X
Index
A. Important Notices
-------------------------------------------------------------- 1
A-1. Warranty
A-2. Technical and Service Contact
A-3. Certification
A-4. Safety Notice
B. Introduction
---------------------------------------------------------------------- 3
B-1. Specifications
B-2. Product Description
B-2-1. EPS-300 X Power Supply Hardware Overview
C. Installation of EPS-300 X Power Supply --------------------------------- 5
C-1. Package List
C-2. Setup and Operation of the EPS-300 X Power Supply
C-2-1. Unpacking
C-2-2. Setup and operation
D. Troubleshooting ----------------------------------------------------------------- 8
D-1. Basic troubleshooting
D-2. Error codes
D-3. Replacing the fuses
E. Care and Maintenance -------------------------------------------------------- 11
F. Order Information --------------------------------------------------------------- 12
i
EPS-300 X
A. Important Notice
Before setting up and operating the instruments, please carefully read these instructions to get
familiarized with the installation and operation process. Instructions should be read by experienced
individuals before operating the instruments. Any improper usage of the instruments may cause damage.
Please refer to the safety notice included with this equipment.
The instruments shall not be modified or altered in any way. Any modification or alteration will void the
warranty, void the regulatory certifications and create potential safety hazard. C.B.S. Scientific is not
responsible for any injury or damage caused by using the instruments for any non-intended purpose or
injury as a result of modification of the instruments by any person who is not authorized by C.B.S. Scientific
Company, Inc.
A-1. Warranty
EPS-300 X is warranted to be free from defects in materials or workmanship for a period of one year
from the original invoice date, under normal usage. Any defects occurring during warranty period, C.B.S.
Scientific will repair or replace defective products or parts without charge unless the defects arise from
conditions outlined below. The defects described below are specially excluded from C.B.S. Scientific’s
warranty policy.
1.
Improper operation of the instrument.
2.
Repair or modification by any person who is not authorized by C.B.S. Scientific
3.
Damage caused by any (in)-direct accident, neglect or misuse.
4.
Damage caused by disaster.
5.
Damage caused by any improper solvents or samples
A-2. Technical and Service Contact
Most of the operation details are described in this instruction manual to assist and guide operator for
an appropriate solution. For any other technical/ service questions, please contact your local representative
or contact C.B.S. Scientific technical service specialist by E-mail: technicalservice@cbssci.com.
A-3. Certification
EPS-300 X Power supply is designed to meet the international electrical standards EN61010 and
EMC regulations. This product holds CE marking and operation according to the guidance of its instruction
manual is certificated safe. Any modification or alternation will void the warranty, void the regulatory
certification and create potential safety hazard.
1
EPS-300 X
A-4. Safety Notice

EPS-300 X power supply uses high voltage output. To minimize the risk of electrical
shock to the user the following guidelines should be observed and followed when using
EPS-300 X power supply. Always read the product manual before operating the unit.

EPS-300 X power supply shall be operated at temperature between 0℃ and 40℃, with
relative humidity between 0% and 90% non-condensing. Do not operate the EPS-300 X
power supply in extreme humidity or where condensation can short the internal electrical
circuits.

Be sure that there is at least 6 cm clearance around the EPS-300 X power supply to
ensure adequate cooling.

Always connect the power supply using the AC power cord provided with the power
supply or a similar 3-prong, grounded AC outlet.

Use other than C.B.S. Scientific’s electrical cable with plugs or banana jacks is done at
the user’s own risk when connecting the external instrument to the power supply’s high
voltage output jacks. While doing so, always grasp the plug by the molded support at the
rear of the plug. Do not grasp the individual prong ends.

When taking the power supply into a cold room, the unit can be operated immediately.
However, when removing the power supply from the cold room, let the unit equilibrate to
room temperature for a minimum of two hours before using it.

Never connect a high voltage output lead to earth ground. This defeats the floating
electrical isolation of the power supply and exposes the user to potentially lethal high
voltages.
2
EPS-300 X
B. Introduction
EPS-300 X power supply is compact, space saving and light weight in design. It can be
used with many electrophoresis applications, such as running standard PAGE gels, multiple
PAGE mini gels, horizontal/vertical agarose gels, semidry transfer and mini-gel tank transfer.
The LED display reports power supply status. Parameters are set by pressing UP/DOWN arrow
buttons in combination with a MODE button. Four pairs of output jacks accept 4 mm plugs, which
operate in parallel. The output jacks are color coded, recessed for safety, and accept both 4 mm
unshielded and shielded (banana) plugs. The user interface consists of a three digit, LED
readout, and five buttons on a membrane keypad. Diagrams of the front and rear panel are
shown on the following pages. The EPS-300 X operates in constant voltage or constant current
modes. Power output is controlled by setting a maximum value for voltage (up to 300 V), or
current (up to 500 mA). The maximum output power at any time is 90 Watts. The Run duration
can be continuous or programmed to a maximum duration of 1440 minutes. The EPS-300 X
automatically “crosses over” or switches the limiting parameter according to the programmed
limits as the resistance of the electrical load changes during a run.
B-1. Specifications
Type
Input
Output voltage (V)
Output current (mA)
Maximum output power (W)
Output jacks
Output connector
Timer (Minutes)
User interface
Dimension (L x W x H)
Weight
Safety features
Operating conditions
EPS-300 X
100 – 240 VAC, 50-60 Hz
1 – 300, 1 V steps
1 – 500mA, 1mA steps
90 W
4 pairs
4-mm plugs
1 – 1440, 1 minute increment
3 digit, red LED membrane keypad
320 x 240 x 73 mm
Net ~2.4 kg (5.3 lb) Gross ~3.4 kg (7.5 lb)
No load detection, Sudden load change protection,
Over voltage protection, Automatic power failure recovery
Indoor use: 0 – 40 ℃
Relative humidity: 0% to 90% Non-condensing
Altitude: < 2000 m
Installation category: II
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EPS-300 X
B-2. Product Description
B-2-1. EPS-300 X Power Supply Hardware Overview
EPS – 300 X
Button
Description
1
ON/OFF
ON/OFF Power Supply
2
CONST
Select voltage or current to be constant
3
MODE
Select the volts, milliamps, or time to be displayed
4
△▽
5
RUN
Changes the displayed value of the selected parameter
Starts and Stops the output from the Power Supply
The front and rear panel buttons as shown above are used to set up and run the EPS-300 X
power supply. The audible alarm design allows a beep sound for each and every button pressed
on the front membrane keypad. A long beep alarm allows user to identify the run is complete or if
an error occurs. It will continue every ten seconds until any button is pressed or the main power
is turned off.
4
EPS-300 X
C. Installation of EPS-300 X Power Supply
C-1. Package List
Item
Quantity
EPS-300 X power supply
1
Power cable
1
Instruction package
1
C-2. Setup and Operation of the EPS-300 X Power Supply
C-2-1. Unpacking
Unwrap all packages carefully and compare contents with the packing list, ensure the arrival of
all the items. If any part is missing, contact your local C.B.S. Scientific representative. Inspect all
the components for damage that may have occurred while the unit was in transit. If any part
appears damaged, contact the carrier immediately. Be sure to keep all packing material for
damage claims or to use should it become necessary to return the unit.
C-2-2. Setup and Operation
Caution: Use only one hand when making or breaking a connection to avoid making a
complete circuit across your chest. Also while connecting or disconnecting the leads, do not
allow any part of your body to contact a grounded surface. Ensure your other hand is not
touching anything that grounds you.
Caution: If you are in the middle of a run and wish to connect or disconnect the leads,
always turn the power off (RUN button) and wait for the display to read “OFF”
5
EPS-300 X
1. Connect the main power cord: Connect the main power cord to the power cord receptacle
on the rear panel and to a suitable grounded AC power outlet.
2. Connect the HV power leads: Connect the apparatus to the power supply by plugging the
lead connectors into one pair of the recessed output jacks. The power leads are
non-reversible as per to the color coordinated to the output jacks.
3. Turn on the main power switch: Turn on the main power switch on the rear panel. The
front panel and the main power LED indicator should be illuminated.
4. Select constant mode: Press the CONST button to toggle between constant voltage and
constant current mode. The selection is indicated by the green LED.
5. Adjust limit: Press up and down buttons to set the constant variable to the desired value.
6. Check other run variable: Press the MODE button to check and verify the set value of the
other (non-constant) run variable. This variable is set by default to the maximum output of
the power supply. This is the normal condition or setting for simple electrophoretic
separations. Optional: If there is another upper limit desired for this non-constant variable,
use the up and down buttons to set it to the desired value.
7. Set the timer (Optional): Press the MODE button to move the green indicator LED light to
under clock symbol.
Continuous run: Leave the timer at “0” to start a continuous run. The power supply will
continue to operate indefinitely, until stopped manually. The timer will start counting up,
indicating the length of the run in minutes. After reaching the maximum time of 999 minutes
the timer will automatically reset and recount again from 0. Therefore for over night
operation the resulting operation time is the addition of the current timer value with the
previous maximum timer 1440 minutes.
Timed run: Press the up and down buttons to set the timer to the desired value (minutes).
The timer counts down during the run, indicating the time remaining. At the end of the timed
run, a ~3 second beep sounds and the display changes to “OFF”. To reset the power supply
press any button except the RUN button.
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EPS-300 X
PFD: The Power Failure Detection feature will save the time, voltage and current settings in
the event of a power outage and automatically continue the run when the power is restored.
To alert the user that a power failure occurred during the run, the error message “E6” flashes
at the end of the run instead of the usual “OFF” message. The “E6” error message means
that despite the power outage, the power supply successfully supplied the programmed
voltage and current for the entire length of time that was programmed. The time shown at
the end of the run is the time the gel ran since power was restored, not the total time of the
run. The default settings for Power Failure Detection are:
Run
Time Setting
PFD
Code
Timed Run
1 – 1440 minutes
ON
PF1
OFF
PF0
Continuous run
0
The Power Failure Detection feature can be deactivated during a timed run.

Press the MODE button to move the indicator light under clock symbol.

Press the UP and DOWN buttons to enter in the run time in minutes.

Press both the UP and DOWN buttons at the same time. The display will briefly
show “PF0”, indicating that the PFD mode is disabled.

Press both the UP and DOWN buttons at the same time again. The display will
show “PF1”, indicating that the PFD mode is enabled.
8. Start the run: Press the RUN button. The green LED light above the RUN button indicates
that voltage and current are being applied to the output jacks. The green LED light above the
CONST button indicates which parameter (V or mA) is limiting. The LED display shows the
numerical value of the actual V or mA output, or the time (Press the MODE button to toggle
between the values). The timer will count up in the case of a continuous run and count down
if the timer was set for a specific timed duration.
9. Stop the run: A timed run will automatically stop with a warning beep as described above.
In the case of a continuous run, press RUN button to terminate the run (The green LED light
above the RUN button will turn off indicating that the voltage and current which was being
applied to the output jacks were stopped.). The display reads “OFF”. To reset the power
supply press any button except the RUN button.
7
EPS-300 X
D. Troubleshooting
D-1. Basic troubleshooting
Caution: Wait 10 seconds while disconnecting the main AC input power cord to allow
voltage discharge within the power supply when restarting.
Symptom
Action and possible causes
1. Check main power source
Fan is not spinning
LED & Display do not light up
Front panel power on indicator off
2. Check the fuse, replace a new same configuration
fuse if necessary and try again
3. Check if power switch malfunction
4. Contact your local C.B.S. Scientific representative
Fan is spinning
1. Check main power source
LED & Display do not light up
2. Check if any errors on the front panel LED display
Front panel power on indicator off
3. Contact your local C.B.S. Scientific representative
Fan is spinning
LED & Display do not light up
1. Contact your local C.B.S. Scientific representative.
Front panel power on indicator on
Fan is spinning
Intermittent LED & Display
1. Contact your local C.B.S. Scientific representative.
Front panel power on indicator on
1. Replace a new same configuration fuse and try
Fuse blown
again
2. Contact your local C.B.S. Scientific representative
8
EPS-300 X
D-2. Error codes
The EPS-300 X power supply has built-in error messages to help troubleshoot problems with the
electrical circuit. The error codes and possible corrective actions are listed below:
Error
Explanation
Code
Possible Solution
No load detected
1. Check all the connections
The voltage leads to the
2. Verify that buffer volumes are sufficient to
electrophoresis cell are not
E1
contact all electrode wires and that buffer
plugged.
is contacting both surfaces of the gel.
The current load for the
3. Press the any button* to clear the error
separation is below 1 mA the
code.
lower limit of the power supply.
1. Check and correct all potential resistance
Change in Load Resistance
problems.
Open circuit was detected at some
E3
2. Check buffer volumes.
point after a successful start.
3. Check all voltage leads.
Buffer is leaking from the cells.
4. Check the power supply adapters fitting
There is a loose electrical
(If used)
connection in the circuit.
E4
5. Press any button* to clear the error code.
Power Failure during a
1. Restart the run, if desired. Press any
Continuous run (no timer used)
button* to clear the error code.
1. Restart the run, if desired.
Power Failure during a timed run
E5
2. Press any button* to clear the error
with PFD option disabled.
Run was not complete.
code.
See page 7 for information on the PFD option.
Power Failure during a timed run
E6
1. Press any button* to clear the error
with PFD option enabled.
Despite the power outage the run
was completed successfully.
code.
See page 7 for information on the PFD option.
9
EPS-300 X
1. Check for any short circuit or evidence
E7
Short Circuit
Load current exceeded 500 mA
of electrical arching.
2. Buffer concentration is too high.
3. Press any button* to clear the error
code.
*Press any button, except the RUN button, to clear the error message.
D-3. Replacing the fuses
1. Unplug the power cord from the power supply.
2. Locate the fuse compartment on the rear panel.
3. Use a screwdriver to pry out the fuse compartment. There are two fuses in the compartment.
Check and replace any blown fuses with a fuse of the same size and ratings.
4. FUSES (2); 250 V, 3.15 A, 5 x 20 mm fast blow.
10
EPS-300 X
E. Care and Maintenance
 Turn the main power switch off and unplug the power cord before cleaning.
 Use a soft cloth dampened with water or a mild cleaning solution to clean the cabinet and
display.
 If spilled liquids contact the circuit boards, unplug the power supply and allow to dry
completely. Please contact your local representative or C.B.S. Scientific technical service
specialist by E-mail: technicalservice@cbssci.com
 C.B.S. Scientific offers complete technical support for all of our products. If you have any
questions about how to use this product, or would like to arrange to repair it, please contact
your local C.B.S. Scientific representative or international technical service specialist by
email: technicalservice@cbssci.com
11
EPS-300 X
F. Order Information
EPS Power Supply
Description
EPS-250 X * High Current Power Supply, 100 ~ 240 VAC, 50~60 Hz, 288VA, 2-250V, .01-2.5A,
200W max
EPS-300 X * Power Supply, 100 - 240 VAC, 50~60 Hz, 1-300V, 1-500mA, 90W max
EPS- 600 * Power Supply, 100 ~240VAC, 50~60 Hz, 5-600V, 1-500mA, 120W max
*Standard package: Complete power supply unit, an instruction manual, power cable and a
warranty card.
12
Printed in Taiwan
C.B.S. Scientific Company
P.O. Box 856, Del Mar, CA 92014
Phone: 858-755-4959
www.cbsscientific.com
email: technicalservice@cbssci.com
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