Chapter 15: Gridding Processes
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Changing the Picking Head
The Change Head window reminds you which picking head to load, based on the Setting
Summary routine you configure, and provides you an opportunity to change the head.
The head is housed in a unique actuator system that permits easy exchange and set-up of the
head.
Although it is possible to manually move the actuator assembly, you should use the software to
safely move the actuator into position to remove or install the head.
WARNING! PINCH HAZARD.
The actuator assembly has moving parts that can
cause pinch injuries if it is moved manually. To prevent pinch injuries, use the software
Change Head process to safely move the actuator.
To change the picking head:
1. Click Move to Load Position to move the picking head arm to the loading position.
2. When the message displays, make sure that the bed is clear of obstructions and that the
door is closed, and then click OK to move the actuator into position near the front of the
instrument.
3. Open the front door.
4. Install the picking head.
To remove an installed head, unscrew and remove the thumbscrew and washer on the
left that secures the head to the actuator assembly. Then, grab the handle on the right
and slide the head out of the actuator.
Before storing the head, or whenever it needs cleaning, wipe the exterior of the head
with a cloth using 70% ethanol. To store the head, slide it into its metal cover with the
pins facing inward and then secure it in place with the thumbscrew and washer.
To install a head, hold the head by its handle with the pins pointing down and then slide
the head into the actuator assembly from the right. Then, attach the thumbscrew and
washer on the left and hand tighten the thumbscrew to secure the head to the actuator.
5. Close the front door.
6. Click Move to Park Position to move the picking head arm to the run ready park position.
7. When the message displays, make sure that the bed is clear of obstructions and that the
door is closed, and then click OK to home the actuator to its starting position.
8. Click Next to arrange the source plates in the instrument.
Arranging the Plate Layout
To arrange the plate layout:
1. Open the instrument door.
2. In the Holder Layout Summary window, follow the instructions to correctly arrange the plate
holders in the instrument. The layout is defined by the selections you made in earlier steps.
3. Select the Checked? check box to confirm the plate holder layout.
4. Click Next.
5. Remove all plate lids.
6. In the Load Plates window, follow the instructions to correctly place the source plates.
7. Select the Checked? check box to confirm the source plate layout.
8. Close the instrument door.
9. Click Next to start gridding.
Summary of Contents for QPix 420
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