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Stand-alone Operation
Priming the Pump
This section describes the use of the pump in Stand-alone mode, via the
local keypads. Some of the information is also relevant to the operation
under MS Workstation Control, in particular Priming, customizing the
solvent configuration, and maintenance tasks.
Refer to the keypad layout in Figure 6 for key orientation and description.
1. Open purge valve 1 turn counterclockwise. The pump will self prime
at any flow rate. Use of the Purge function only speeds the process.
2. Press Purge. The pump will automatically begin to purge at a flow
rate of 4 mL/min. During this process the pump will draw solvent
through the inlet line displacing air until all the air has been purged
from the system and flow is evident from the purge valve outlet
waste line. The pump is considered primed when no more air is
present in the solvent stream coming out of the purge valve waste
line. This process usually takes about 2-3 minutes and consumes
8-12 mL of solvent. After the purge process is complete, press Stop.
3. Close the purge valve (clockwise).
Note: Make sure when changing solvents that the new and old solvent
systems are miscible. If there is a problem with solubility the pump may
have to be purged with a solvent of intermediate polarity.
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