UltiMate 3000 Series:
SD, RS, and BM Pumps
Page
82
Operating
Instructions
5.5.4 Setting the Pressure Limits
The pump firmware and Chromeleon provide default values for the upper and lower
pressure limits. The limits depend on the pump type. You are free to change the limits
within the allowed pressure range.
If the pump pressure is outside the specified limits, the related message appears on the pump
display. If the pump is operated with Chromeleon, the message is also displayed in the
Chromeleon Audit Trail. In addition, Chromeleon stops the flow and aborts the batch. Check
the Troubleshooting section for a short description of possible causes along with
recommended courses of action (
Lower pressure limit
Helps to prevent the pump, and thus the column, from running dry. A typical setting is
1 MPa.
Upper Pressure Limit
Helps to protect the column from too high a pressure. The application and column type
determine the setting.
To set the pressure limits in Chromeleon
A Pressure range
The range within which the pressure limits can be set and the pressure unit are specified in the
in the Properties dialog for the pump (
page 39). You can set the upper and lower pressure
limits only within the specified range.
B To change the pressure limits for a specific application
1.
Open the
Commands
dialog box for the pump (
page 65).
2.
Select
Pressure
and enter the new limits under
LowerLimit
and
UpperLimit
.
The property is listed under
PumpModule > [Pump Device Name]
(
To set the pressure limits on the pump display
1.
Select the
Control
menu.
2.
Check and change the settings for
Max. pressure
and
Min. pressure
if necessary.
You can change the
Pressure unit
on the
Configuration
menu. When the pump is operated
with Chromeleon, the pressure unit specified in Chromeleon will be used.
Summary of Contents for UltiMate 3000 Series
Page 2: ...UltiMate 3000 Series SD RS and BM Pumps Operating Instructions ...
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