Basic Operations of the Plate Washer
12-6 DSX™ System Service Manual
12.4.4 Aspirate
The Aspirate step is used to remove the contents of the wells in the indicated row (column).
During this step the wash pins are positioned at the aspiration height and the aspiration pump
will withdraw fluid for the indicated time. The aspirate height for a particular plate type is
specified during system configuration. If desired, the wash pins can be moved back and forth
during an aspiration cycle via the Sweep option (Section 12.4.8). When this operation is
called, the steps indicated in Table 12-3 are performed:
Table 12-3 The Aspirate Step
Step Operation
1 If this is the first cycle, set the Z motor ramp to a slower speed
2 Move the wash head down to the required aspirate height
3 If this is the first cycle, set the Z motor ramp back to the normal speed
4 If Sweep is required, perform a sweep, otherwise wait 1 second
5 Repeat for the required number of cycles
6 Move the Wash Head back up to the home position height if this Aspirate
command is not part of a Wash command
12.4.5 Soak
The Soak step is used to allow the wash fluid to remain in the wells after the Dispense step
(range 1-999 sec). A Soak step can be performed as part of a Move cycle or as an independent
step. When this operation is called, the steps indicated in Table 12-4 are performed:
Table 12-4 The Soak Step
Step Operation
1 Wait for the required number of seconds
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