Thermo Scientific PowerEase PS0300 User manual

PowerEase®300W Power Supply
Catalog Numbers PS0300, PS0301, PS0302
Publication Number MAN0008988
Revision D.0
Research Use Only. Not for use in diagnostic procedures.

Important Licensing Information:
These products may be covered by one or more Limited Use Label Licenses. By use of these products, you accept the
terms and conditions of all applicable Limited Use Label Licenses.
DISCLAIMER: LIFE TECHNOLOGIES CORPORATION AND/OR ITS AFFILIATE(S) DISCLAIM ALL WARRANTIES
WITH RESPECT TO THIS DOCUMENT, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THOSE OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. TO THE EXTENT
ALLOWED BY LAW, IN NO EVENT SHALL LIFE TECHNOLOGIES AND/OR ITS AFFILIATE(S) BE LIABLE, WHETHER
IN CONTRACT, TORT, WARRANTY, OR UNDER ANY STATUTE OR ON ANY OTHER BASIS FOR SPECIAL,
INCIDENTAL, INDIRECT, PUNITIVE, MULTIPLE OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH OR
ARISING FROM THIS DOCUMENT, INCLUDING BUT NOT LIMITED TO THE USE THEREOF.
©2014 Thermo Fisher Scientific Inc. All rights reserved. All trademarks are the property of Thermo Fisher Scientific and its
subsidiaries unless otherwise specified.

PowerEase®300W Power Supply User Guide
Contents
0BIntroduction......................................................................................................................................................................4
8BProduct contents...........................................................................................................................................................4
9BProduct description.......................................................................................................................................................4
10BDescription of buttons and switches...........................................................................................................................6
11BOperational keys.........................................................................................................................................................6
1BMethods............................................................................................................................................................................7
12BGetting started............................................................................................................................................................7
13BImportant guidelines...................................................................................................................................................7
14BOperation modes ........................................................................................................................................................7
15BLimiting parameter settings......................................................................................................................................11
2BAppendix A....................................................................................................................................................................12
16BGeneral safety...........................................................................................................................................................12
Instrument safety ............................................................................................................................................................12
17BExplanation of symbols and warnings......................................................................................................................13
1Product regulatory compliance .....................................................................................................................................13
3BAppendix B ....................................................................................................................................................................15
19BTroubleshooting .......................................................................................................................................................15
20BCommon errors.........................................................................................................................................................16
4BAppendix C ....................................................................................................................................................................17
21BOperational electrical parameters.............................................................................................................................17
5BAppendix D....................................................................................................................................................................18
22BProduct specifications ..............................................................................................................................................18
6BAppendix E ....................................................................................................................................................................19
23BRepair and maintenance ...........................................................................................................................................19
7BAppendix F.....................................................................................................................................................................20
24BDocumentation and support .....................................................................................................................................20

4 PowerEase®300W Power Supply User Guide
0BIntroduction
8BProduct contents
25BContents
Component
Quantity
Regulatory mark(s) on
electrical plug
PowerEase®300W Power
Supply
1 each
Extra Fuse
1 each
Type B Power Cord
1 each (PS0300)
CSA
JIS 8303 Power Cord
1 each (PS0300)
PSE
Type G Power Cord
1 each (PS0301,
PS0302)
ASTA
Type CEE 7/7 Power Cord
1 each (PS0301,
PS0302)
VDE, KEMA, CEBEC,
NEMKO, DEMKO,
FIMKO, SEMKO, OVE,
CE, ESC, IMQ
GB 15934-2008 Power Cord
1 each (PS0301,
PS0302)
CCC
Type I Power Cord
1 each (PS0302)
NSW 18392
Quick Reference Card
1 each
Important: Some of the power cords appear similar; users should utilize the cord approved for
their country/region. North America customers should use the Type B power cord and Japanese
customers should use the JIS 8303 power cord. Chinese customers should use the GB 15934-2008
power cord and Australia/New Zealand customers should use the Type I power cord.
26BUpon receiving
the instrument
Examine the unit carefully for any damage incurred during transit. Any damage claims must be
filed with the carrier, keep the supplied box for inspection. The warranty does not cover in-transit
damage.
To ensure safe, reliable operation, always operate the PowerEase®300W Power Supply in
accordance with the manufacturer’s instructions. Always wear protective gloves and safety glasses
when working in a laboratory environment. Avoid exposing the power supply to liquids as these
may damage the unit and void the warranty.
9BProduct description
27BIntroduction
The PowerEase®300W Power Supply is a microprocessor-controlled power supply designed to
meet most electrophoresis needs in a single easy to use unit. The power supply’s small foot print
and stacking feature conserve valuable bench space. This instrument is ideal for DNA/RNA
electrophoresis, SDS-PAGE, and native PAGE. With four sets of output jacks that can be used
simultaneously, the PowerEase®300W Power Supply is designed to run applications at maximal
power and efficiency. The PowerEase®300W Power Supply offers three modes, Constant
Voltage, Constant Current and Constant Power Mode. This manual describes the setup and
operation of PowerEase®300W Power Supply including important information on safety and
maintenance of the unit.

PowerEase®300W Power Supply User Guide 5
28BFeatures of the
PowerEase®300W
Power Supply
Constant Voltage, Power or Current
Capable of running multiple electrophoresis units
LCD display with clear menu prompts for easy use
Programming capabilities for limiting voltage (V), current (mA), power (W)
Four sets of output terminals
Capability to specify run durations

6 PowerEase®300W Power Supply User Guide
10BDescription of buttons and switches
29BFront view of
PowerEase®300W
Power Supply
30BRear view of
PowerEase®300W
Power Supply
11BOperational keys
PowerEase®300W Power Supply key pad
Key
Use the key to…
(Up Arrow)
Toggle the cursor position up and increase
values when settings are flashing.
(Down Arrow)
Toggle the cursor position down and
decrease values when settings are
flashing.
Mode
Select Constant Mode or Program Mode
The Mode key cycles between voltage,
current, power, and time settings, allowing
values to be changed.
Constant
Toggle between constant voltage, current,
or power operation.
Start/Pause
Start, pause, and resume power supply
operation without resetting the timer.
Stop
Stop power supply operation, reset the
timer, turn off the beeper.
Power inlet
Power switch
Fuse
compartment
rawer
Fuse drawer
Backlit LCD
display
Output jacks
Control buttons

PowerEase®300W Power Supply User Guide 7
1BMethods
12BGetting started
31BInstall the
PowerEase®300W
Power Supply
1. Check the label located at the bottom of the power supply to ensure that the unit is compatible
with locally provided voltage.
2. Place the PowerEase®300W Power Supply on a level laboratory bench. Keep the area around
the power supply clear to ensure proper ventilation of the unit.
3. For your safety: Position the unit properly such that the On-Off switch and the AC inlet
located on the rear of the unit are easily accessible.
4. Ensure the AC power switch is in the Off position.
5. Attach the power cord to the AC inlet. Use only properly grounded AC outlets and power
cords.
6. Connect the leads from the electrophoresis unit; insert the positive lead (+) into the positive
(red) output jack, and the negative lead (–) into the negative (black) output jack.
13BImportant guidelines
32BIntroduction
The important guidelines for operating the PowerEase®300W Power Supply are provided in this
section. We recommend that you carefully review these guidelines before operating the instrument.
Important: For best results, do NOT use the PowerEase®300W Power Supply at its maximum
electrical load limits. Variations in buffer conditions can result in exceeding the power supply’s
maximum voltage, current, or power output capacity and produce undesirable variations in
performance.
33BRecommendation
The duration of electrophoresis can be defined in time (hours/minutes). When using this or any
electrophoresis product, we recommend that you adhere to the protocols given in the
electrophoresis product manuals, and durations, specified in time.
Important: For best results, follow these important guidelines when running multiple gels and
electrophoresis units concurrently. For example:
Avoid running samples of widely differing salt concentrations or sample buffers at the same
time or on the same gel.
Properly prepare your samples.
Note: Variations in conductivity due to differences in buffer salt concentrations can affect the run
of all the samples run at the same time.
Note: For optimal performance, use Constant Voltage Mode when using the
PowerEase®300W Power Supply with 1 –2 protein gels or blots.
14BOperation modes
34BIntroduction
The PowerEase®300W Power Supply is designed to operate under different modes, Constant
Mode or Program Mode, designed to meet most electrophoresis needs. Use the Constant
Voltage,Constant Power or Constant Current Operation for applications that require only one
specific voltage limit, current limit, or power limit continuously during the entire duration of
electrophoresis.

8 PowerEase®300W Power Supply User Guide
35BStart-up
On power up use the arrow key to choose the operational Mode (Constant Mode or Program
Mode), then press Mode to select.
On the Display Screen:
After selecting Constant Mode, the unit defaults to the Constant Voltage mode and Volts (V)
displays on the left side of the screen in large characters. The controlling value [Volts (V),
Amps (A), or Watts (W)] is always displayed on the left-top side of the display screen in large
characters.
TIME is the first line on the right-top, and the other values (VOLT, AMP or WAT) are
displayed in the second and third line on the right side of the display screen.

PowerEase®300W Power Supply User Guide 9
36BConstant
operation protocol
Instructions for operating the PowerEase®300W Power Supply in the Constant Mode are
provided in this section. The Constant Voltage, Current, or Power Mode allows you to specify
a voltage limit, current limit and power limit to be used during the entire duration of
electrophoresis. Review the guidelines provided in this manual before starting electrophoresis
using the PowerEase®300W Power Supply.
A basic Constant Voltage, Current Mode, or Constant Power operating procedure of the
PowerEase®300W Power Supply is provided below. We recommend reading the guidelines
provided in this manual for best results before starting an operation.
Note: The PowerEase®300W is a high throughput power supply. For optimal performance, Life
Technologies recommends using Constant Voltage when running 1–2 protein gels or blots.
1. Use the power switch on the rear side of the instrument to turn on the PowerEase®300W
Power Supply. On display screen Constant Mode and Program Mode will appear.
2. With the Constant Mode highlighted press the Mode key.
3. The Mode key toggles editing between VOLT, TIME (hours/minutes), AMP, and WAT
4. Press the Constant key to select the operation modes: Constant Voltage, Constant Current, or
Constant Power from the display screen.
The screen displays the selected operation mode on the left side of the display.
5. Use the arrow keys to set the selected operation [voltage (VOLT), current (AMP), or
Power (WAT)] to the appropriate values.
6. Use the Mode key to select TIME and use arrow key to set the time (hours/minutes) to
specify the duration of the electrophoresis.
7. Press Start/Pause key to start electrophoresis. The Red LED illuminates when the
electrophoresis is running.
8. Press the Start/Pause key again to temporarily interrupt power to ongoing electrophoresis
without terminating the operation along with LED flashing.
9. Press Start/Pause key to restart electrophoresis.
10. Press Stop key to stop the electrophoresis.
Note: If the parameters need to be changed during the run press Start/Pause, enter the changes, and then
press Start/Pause once again to restart the operation.
Note: After stopping and restarting an operation, the timer resets to the selected time.
37BBasic
programming
protocol
Instructions for operating the PowerEase®300W Power Supply in the Program Mode are
provided in this section. The Program Mode allows user to vary levels in voltage (V), current
(mA), and power (W) during specified periods of time as discrete changes (STEP) for up to 10
steps, depending upon electrophoresis needs.
A basic Program Mode operating procedure of the PowerEase®300W Power Supply is provided
below. For best result, read the guidelines provided in this manual before starting an operation.

10 PowerEase®300W Power Supply User Guide
Create a program
1. Select Program Mode by scrolling down using the key.
2. When highlighted press Mode key.
3. Select program file number using the arrow keys.
4. When program file number is located press the Mode key.
5. Select the number of steps by using the arrow arrow keys.
6. To enter the parameters of the run press the Mode key.
7. Voltage will appear on the display to enter voltage press Mode key.
8. To change voltage, use the arrow keys.
9. Select AMP or WAT by pressing the Mode key until desired parameter is flashing.
10. Increase or decrease the value by using the arrow keys.
11. To set the time in hours press the Mode key.
12. Increase or decrease the value by using the arrow keys.
13. Select the Mode key again to select minutes.
14. Increase or decrease the value by using the arrow keys.
15. Repeat 6 thru 14 above to create successive steps.

PowerEase®300W Power Supply User Guide 11
38BEdit a program
1. When a program file is selected the parameters can be edited by the Mode key.
2. The selected parameter will flash. Use the arrow keys to either increase or decrease
values
3. Press the Mode key to migrate to the next parameter and then to the next step.
39BView a program
1. Select the program file number using the arrow keys, when highlighted press the Mode
key
2. Press the Mode key to migrate to the next parameter and then to the next step.
15BLimiting parameter settings
40BIntroduction
The PowerEase®300W Power Supply is capable of operating at limiting Voltage, limiting Current,
or limiting Power. We recommend operating the PowerEase®300W Power Supply at limiting
voltage for most applications. See below for more details.
41BVoltage limiting
For most electrophoresis methods resistance increases throughout the run. Limiting the voltage
provides the following advantages:
Current and power decrease throughout the run, providing an improving margin of safety over
time.
The same voltage setting can be used regardless of the number or thickness of gels being
electrophoresed.
42BCurrent limiting
Discontinuous buffer systems and, to a lesser extent, continuous systems increase resistance during
the run. With the current limiting setting on the PowerEase®300W Power Supply, the voltage will
increase as resistance increases to satisfy Ohm’s law (V=IR). If no voltage limit is set and a local
fault condition occurs, such as a poor connection, very high local resistance may cause the voltage
to increase to the maximum capacity of the power supply. This may lead to local overheating and
damage to the electrophoresis cell or create unsafe conditions. When operating under constant
current conditions, set a voltage limit on the power supply at or slightly above the maximum
expected voltage.
43BPower limiting
Power is a function of voltage and current P=IV. For a typical gel run, the current will decrease
causing the voltage to increase when run at constant power. The power limiting function may be
used when running sequencing gels to remove the ammonium persulfate from the wells and to heat
the gel to an optimal temperature for DNA separations.

12 PowerEase®300W Power Supply User Guide
2BAppendix A
16BGeneral safety
44B
WARNING! Protection impairment if used in a manner not specified by the manufacturer.
Instrument safety
44BAvoid electrical
shock
The PowerEase®300W Power Supply produces up to 3A or 250 voltage outputs which are
electrically isolated from ground to reduce the risk of electrical shock to the user. Follow the
guidelines below to ensure safe operation of the unit.
The PowerEase®300W Power Supply has been designed for use with electrophoresis cells with
shielded banana plugs thus minimizing any potential shock hazard to the user. Life Technologies
recommends against the use of unshielded banana plugs.
To avoid electrical shock:
1. NEVER connect or disconnect wire leads from the power jacks when the red indicator light at
the Start/Stop key is on or when “RUNNING” is displayed on the screen.
2. WAIT at least 5 seconds after stopping a run before handling output leads or connected
apparatus.
3. ALWAYS make sure that hands, work area, and instruments are clean and dry before making
any connections or operating the power supply.
4. ALWAYS connect the power supply to a properly grounded AC outlet.
45BAvoid damage to
the instrument
1. For proper ventilation, leave at least 10 cm of space behind the instrument, and at least 5 cm of
space on each side.
2. Do not operate the power supply in high humidity environments (> 95%), or where
condensation may occur.
3. To avoid condensation after operating the power supply in a cold room, place the unit in a
sealed plastic bag prior to removing the power supply from the cold room. After removing the
power supply from the cold room, allow at least 2 hours for the unit to equilibrate to room
temperature before removing the plastic bag and operating the unit.

PowerEase®300W Power Supply User Guide 13
17BExplanation of symbols and warnings
46BSymbols and
warnings
Symbol
English
Français
Caution, risk of electrical shock
Attention, risque de choc électrique
Caution, risk of danger
Consult the manual for further
safety information.
Attention, risque de danger
Consulter le manuel pour d’autres
renseignements de sécurité.
Do not dispose of this product in
unsorted municipal waste.
CAUTION! To minimize
negative environmental impact
from disposal of electronic waste,
do not dispose of electronic waste
in unsorted municipal waste.
Follow local municipal waste
ordinances for proper disposal
provision and contact customer
service for information about
responsible disposal options.
Ne pas éliminer ce produit avec les
déchets usuels non soumis au tri
sélectif.
CAUTION! Pour minimiser
les consequences négatives sur
l’environnement à la suite de
l’élimination de déchets
électroniques, ne pas éliminer ce
déchet électronique avec les
déchets usuels non soumis au tri
sélectif. Se conformer aux
ordonnances locales sur les
déchets municipaux pour les
dispositions d’élimination et
communiquer avec le service à la
clientèle pour des renseignements
sur les options d’élimination
responsable.
Indicates conformity with European
Union requirements for safety and
electromagnetic compatibility.
Indique la conformité avec les
prescriptions enmatière de sécurité
et de compatibilité électromagnétique
de l'Union européenne.
Indicates conformity with Australian
standards for electromagnetic
compatibility.
Indique laconformité avec les
normes australiennes de
compatibilité électromagnétique.
Indicates conformity with safety
requirements for Canada and USA.
Indique laconformité avec les
prescriptions en matière de sécurité
du Canada et desÉtats-Unis.
1

14 PowerEase®300W Power Supply User Guide
Product regulatory compliance
47BFederal
Communications
Commission
Advisory
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user 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.
47BEnvironmental
design
compliance
This equipment is compliant with Directive 2011/65/EU - European Union "RoHS Directive" -
Restriction of hazardous substances in electrical and electronic equipment.

PowerEase®300W Power Supply User Guide 15
3BAppendix B
19BTroubleshooting
Observation
Possible cause
Recommended action
The LCD screen
remains blank and the
fan does not run when
the power is turned on
AC power cord is not connected
Check AC power cord connections at both ends.
Use the correct cord.
The fuse has blown
Replace the fuse
Operation stops with
alarm: The screen
displays “NO LOAD”
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 circuit by
reconnecting the cables. Press Start/Pause 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 tape 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 VOLTAGE”
Circuit is interrupted
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
“LEAKAGE”
Ground leak detected during run
Check the electrophoresis system for improper
grounding. Restart the power supply by turning the
Power switch off and on.
Operation stops with
alarm:
Display shows “OVER
TEMP”
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 position.
If you cannot restart the instrument, turn off
the power, disconnect the power cord from the
outlet, and contact Technical Service.

16 PowerEase®300W Power Supply User Guide
20BCommon errors
Observation
Possible cause
No load
The electrophoresis system is not connected to the power leads, check the power
leads
The electrophoresis system has a short, the platinum wire is broken or the banana
connectors are damaged
Buffer concentration too low
Buffer volume too low
Short in power cord
Current has dropped below acceptable rating (10 mA)
Short circuit
Load exceeds 3A
Blown fuse in the power supply
Incorrect input voltage (check input voltage switch near power inlet)
Change in load
Electrophoresis systems were added or removed during a run
Buffer leaking in a connected system
Excessive temperature increase
Excessive buffer evaporation
Loose connection in a connected system
Current set too low
Change in constant
mode
Voltage changes to current
Current set too low. Ceiling hit and constant mode changed from voltage to
current. Increase current to 3A.
Current changes to voltage
Voltage set to low. Ceiling hit and constant mode changed from current to
voltage. Increase voltage to 250V
The PowerEase®300W Power Supply has automatic cross over, set voltage or current, and preset power. During the
electrophoresis process only one parameter is limiting at a time. The limiting parameter, together with the conductivity
in the electrophoresis system, and the values for the other parameters determine the maximum output.

PowerEase®300W Power Supply User Guide 17
4BAppendix C
21BOperational electrical parameters
48BOhm’s Law and
Joule’s Law
Electrophoresis is the migration of a charged particle under the influence of an electrical field. The
power supply output parameters voltage, current, and power are related by the following two
equations:
Voltage (V) = Current (I) x Resistance (R); (V=IR)
Power (P) = Current (I) x Voltage (V); (P=IV)
49BResistance
Resistance of the assembled electrophoresis cell is dependent on the conductivity of the gel buffer,
the thickness of the gel, and the number of gels being run. Although the resistance is determined
by the gel system, the resistance can vary over the course of an electrophoretic separation. For
instance, in the Tris-Glycine buffer system, the fast moving, highly conductive chloride ions in the
gel are gradually replaced by the slower moving, less conductive glycine ions from the running
buffer as the gel runs. As a result, the resistance of the gel increases as the chloride/glycine front
moves down the gel.
50BVoltage
The velocity with which an ion moves in an electric field will vary in proportion to the field
strength (volts per unit distance). The higher the voltage the faster an ion will move.
51BCurrent
Current is a function of the number of ions passing a given cross-section of the circuit at a given
time. For a given gel/buffer system, at a given temperature, current will vary in proportion to the
field strength (voltage) and/or cross-sectional area (number and/or thickness of the gels). Ions in
solution and at a given voltage will move faster as the temperature increases, increasing current.
52BPower
The power in Watts, or the rate of heat generated by the system, is directly proportional to voltage
and current (P=IV).

18 PowerEase®300W Power Supply User Guide
5BAppendix D
22BProduct specifications
Feature
Specifications
Input Power (switchable)
115 VAC, 50/60 Hz
230 VAC, 50/60 Hz
Fuses
One 4A/250V, one extra fuse is provided
Output power in watts
300 watts
Output voltage range
5~250 V
Output current range
10 mA~3 A
Timer
~99.99 per step
Terminal pairs
4 (4 positive voltage and 4 negative voltage)
Operating Modes
Constant Voltage
Constant Current
Constant Power
1V step
10 mA step
1 watt step
Crossover
Automatic
Display type
Backlit LCD Graphic type
Display size
53.64 x 15.64 mm (W x H)
Pause function
Yes
Safety features
No Load Detection
Load Change Detection
Overload Detection
Ground Leak Detection
Auto Restart
Programmable
Yes
Store file no.: 20
Program: up to 10 steps
Stackable
Yes
Housing material
Flame retardant ABS
Housing size
200 x 290 x 70 mm (W x D x H)
Operating temperature
0°C–40°C
Environmental condition
≤95% RH (non-condensing), 75 KPa–106 Kpa, altitude
not to exceed 2000 meters
Weight
2.6 kg
Certifications
CE, cETLus, c-Tick
Warranty
1 year

PowerEase®300W Power Supply User Guide 19
6BAppendix E
23BRepair and maintenance
53BIntroduction
The PowerEase®300W Power Supply requires no periodic maintenance program with the
exception of an occasional dry wipe-down of the instrument.
54BEncountering
Problems
Check the troubleshooting section, see Appendix B
Contact Technical Support, see Appendix F
If the unit must be shipped back for repair, contact support for a Return Authorization Number and
shipping instructions; see Appendix F
55BReplace the fuse
One extra fuse is supplies with the PowerEase®300W Power Supply. For additional fuses, contact
support; see Appendix F
To replace the fuse:
1. Turn off the main power switch at the rear of the PowerEase®300W Power Supply and detach
the power cord from the rear of the PowerEase®300W Power Supply.
2. Open the fuse compartment located inside the power inlet by inserting a small flat blade
screwdriver into the slot on top of the fuse compartment. 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 fuse (4A/250V) as
provided in the fuse holder (see figure below).
4. Place the fuse holder back into the compartment.
5. Snap the cover closed.
Fuse
compartment
Power inlet
Power switch

20 PowerEase®300W Power Supply User Guide
7BAppendix F
24BDocumentation and support
56BServices and
support
For the latest services and support information for all locations, go to HUwww.lifetechnologies.comU.
At the website, you can:
Access worldwide telephone and fax numbers to contact Technical Support and Sales facilities
Search through frequently asked questions (FAQs)
Submit a question directly to Technical Support ([e-mail])
Search for user documents, SDSs, vector maps and sequences, application notes, formulations,
handbooks, certificates of analysis, citations, and other product support documents
Obtain information about customer training
Download software updates and patches
57BSafety Data
Sheets (SDS)
Safety Data Sheets (SDSs) are available at HUwww.lifetechnologies.com/supportUH.
58BCertificate of
Analysis
The Certificate of Analysis provides detailed quality control and product qualification information
for each product. Certificates of Analysis are available on our website. Go to
HUwww.lifetechnologies.com/supportUHand search for the Certificate of Analysis by product lot
number, which is printed on the box.
58BLimited product
warranty
Life Technologies Corporation and/or its affiliate(s) warrant their products as set forth in the Life
Technologies’ General Terms and Conditions of Sale found on Life Technologies’ website at
www.lifetechnologies.com/termsandconditions. If you have any questions, please contact Life
Technologies at www.lifetechnologies.com/support.