ABI Prism® 7900HT Sequence Detection System ... - OpenWetWare

7-34 System Maintenance
To align the input stack 1 (Zymark position 4): (continued)
Step Action
5 Using the Rotary Adjustment arrows, adjust the rotational position of the gripper so
that it is centered over the input stack and will not contact the sides when lowered.
♦ To move the plate handler arm clockwise, click the up arrow.
♦ To move the plate handler arm counter-clockwise, click the down arrow.
6 Using the Vertical Positioning commands, carefully lower the plate handler arm into
the stack. Adjust the Rotary Adjustment value as needed to center the gripper
within the stack.
7 Once the gripper is centered within the stack, click Find Plate.
The plate handler arm lowers upon the plate.
Confirm the following:
♦ the plate is in the middle of the gripper span
♦ the plate sensor switch is contacting the plate
♦ the gripper or plate do not contact the side of the stack
8 Click Close Gripper.
The gripper grips the plate between its fingers.
9 Select Vertical Home.
The plate handler raises the arm to its highest position. If the plate contacts the
sides of the stack, re-adjust the rotary position of the plate handler arm until the
plate moves freely in the stack.
Note Contact between the plate and the stack or all stacks may be unavoidable.
However, try to minimize the contact as much as possible.
10 Using the Vertical Positioning commands, raise and lower the plate handler arm
several times to check the alignment.
11 Lower the plate handler arm to the bottom of the plate stack, click Rotary Offset,
and click Yes.
The software records the rotary position for the Zymark position 4 (input stack 1).
12 Click Open Gripper.
The gripper releases the plate.
Up arrow (moves the arm clockwise)
Down arrow (moves the arm counter-clockwise)