Choosing Limiting Parameter Settings - VWR International 250V Instruction Manual

15. To set the Wattage, press the Mode key to select wattage.
16. You can increase or decrease the value by using the▼▲ arrow keys
17. To advance to the next step press the Mode key until the step is selected
18. Follow the above for each consecutive step.
Viewing a Program
1. Select the file number using the ▼▲ arrow keys when highlighted press the Mode
key.
2. Press the Mode key 3 more time to advance to the programming.
3. If multiple steps use the Mode key to advance through the program to the next step.
Editing a program
1. When in a file is selected the parameters can be edited by the Mode button
2. When the parameter is selected it will flash use the ▼▲ arrow keys to either
increase or decrease values.
3. Press the Mode key to migrate to the next parameter.
4. When the parameter is selected use the ▼▲ arrow keys to increase or decrease
the values.
Programs with multiple steps
1. When the parameters are complete a step in a file the program will proceed to the
next step. Follow the above editing procedure to edit the step within the program.
2. With the ▼▲ arrow keys select the Program Mode .
3. Select program number 1 through 10 then press the Mode key.
4. Select the number of segments 1 through 10 then press the Mode key.
5. Follow the basic programming protocol to set parameters.

Choosing Limiting Parameter Settings

Introduction
The 250V Power Supply is capable of operating at limiting voltage, or limiting
current. We recommend operating the 250V Power Supply at limiting voltage for most
applications. See below for more details.
Voltage Limiting
For most electrophoresis methods resistance increases throughout the run. Limiting the
voltage provides the following advantages:
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