Benchmark Scientific Benchmark Scientific E2301 Manual

9. Troubleshooting

Problem Causes Measures

Check cord connection
and power supply,

No display

Power not connected.
Fuse blown.

Unplug and re-attach
power cord.

Check and replace fuse
at power inlet.

Voltage or
Amperage
setting not
reached

NO LOAD

displayed

Maximum wattage
exceeded

Connection wires not
attached properly.
Buffer is not
conductive.

Current flow is low
due to low resistant
load

a division of

Resistance of the load
(gel tank buffer) is too
low. Change buffer
concentration, or adjust
Voltage to a lower value.

Check wire connections.
Check buffer
concentration.

Disable No Load
detection if required for
low resistance
application.

300V Power Supply

Operating Manual

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Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

This product is for research only

Version 0616-1

7. 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.

Contents

1. Introduction………………………………………............1

2. Product Overview.........………………..........................2

3. Specifications.………………………….….....................3

4. Installation….…………………………………..………....4

5. Warnings……………..………………………..................5

6. Operating Guide.……………………………………..…..5

7. Overview of Electrical Principles……….……………..9

8. Maintenance………………………………………………9

9. Troubleshooting………………….……........................10

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.

Voltage (V)

Current (I) =

_________________

Resistance (R)

Voltage (V)

Resistance (R) =

_________________

Current (I)

Power (W) = Current (I) x Voltage (V)

8. 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.

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