37
Setting up and running the Instrument
®
10. Additional Functions
The following functions are accessible through a special
program mode (available with WellMate EPROM version
3.5 or higher):
• Pump Pause (PP): to initiate a pause after the
dispense in-between each column.
• Pump Count (PC): to check or clear the pump count
feature.
• Timed Prime (PT): to set the duration of time the pump
motor runs when the prime button is pressed.
• Back Step (BS): to initiate a back step of the pump
motor after the dispense and before the Pump Pause.
Note: This feature is useful when dispensing fl uids that
may form droplets at the end of the tip nozzles, or when
dispensing viscous fl uids.
To use this program mode:
1. While holding down the MODE button, press the
SELECT button.
2. Press the SELECT button again to select the mode
you want to program (PP, PC, PT, BS). Use the
arrow buttons to set the parameters for the selected
function. After you have set the program, press the
SELECT button to save the setting.
Note: If you press MODE while in the function, you will
exit without saving the setting and return to the previous
display.
Pump Pause (PP): The pause duration is set in milli-
second intervals. For example, 0.01-99.99 seconds
are available for pausing the pump between dispense
columns.