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

To adjust the plate sensor switch: (continued)
Step Action
4 Remove the plate and listen for the plate-sensor switch to disengage.
Did you hear the
switch disengage? Then…
No a. MovetheswitchDownafewstepsbyturningthe
thumb wheel in the direction indicated on the arm.
b. Replace the plate within the gripper and listen for
the switch to engage:
– If you do not hear the switch engage, then
remove the plate and repeat steps a and b above.
– If you hear the switch engage, remove the plate
and continue to step a below.
Yes a. Move the switch Up by turning the thumb wheel one
step in the direction indicated on the arm.
b. Replace the plate and listen for the switch to
engage:
– If you hear the switch engage, remove the plate
and repeat steps a and b.
– If you do not hear the switch engage, then you
have successfully identified the zero point of the
plate-sensor switch.
Note At the zero point, one step of the thumb wheel
in the Down direction causes the switch to engage.
5 Once the zero point is established, carefully turn the thumb wheel in the Down
direction the number of steps appropriate for your plate format as indicated below:
Plate Format Turn the thumb wheel in the Down direction…
96-Well 20 steps
384-Well 15 steps
Note If you lose count, begin again from step 4 and identify the zero point for the
switch.
6 Test the adjustment as explained on page 7-30.
System Maintenance 7-29