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7 Maintenance and troubleshooting
Hardware problems
138
BenchCel Microplate Handler User Guide
Related information
The microplate drops
or is held loosely by
the stacker grippers. The stacker gripper pressure is too
low so that the grippers are holding
the microplate too loosely. Increase the stacker gripper pressure. See
“Adjusting the stacker gripper pressure” on
page 158
.
The microplate bends
when held by the
stacker grippers. The stacker gripper pressure is too
high so that the grippers are
holding the microplate too tightly. Decrease the stacker gripper pressure. See
“Adjusting the stacker gripper pressure” on
page 158
.
The BenchCel
Microplate Handler is
unable to place a
microplate on the
target location
correctly.
•
The teachpoint is incorrect.
•
The robot and the platepad are
not aligned along the
y -axis
(front-to-back direction), see
“Integrating external devices”
on page 38 to adjust the device
positions.
•
The robot grippers and the
robot arms are not properly
aligned.
•
The robot homing offsets
require adjustment.
Verify and edit the teachpoint. See Verifying
the teachpoints and “Editing existing
teachpoints” on page 97 .
If you suspect that one of the other factors is
responsible for improper microplate
placement, contact Agilent Technical Support.
A high-pitched sound
can be heard when the
robot moves up or
down. The z -axis lacks lubrication. Contact Agilent Technical Support.
The rack-release
button does not turn
green and the labware
rack cannot be
removed. The stack of microplates are still
loaded. In BenchCel Diagnostics, click the Controls
tab. In the graphical display area at the top of
the rack, click
Stacker , and then choose
Unload plates.
More than one
microplate was
downstacked. The Plate present reading is below
the Plate presence threshold. Use the procedure in “Setting sensor
thresholds” on page 99 to adjust the threshold
values.
The stack of
microplates is
dropped onto the shelf
during the
downstacking
procedure. In the shelf stack-holding method,
the stacker gripper offset is too
low. So the distance between the
grippers and shelves is large. Open BenchCel Diagnostics. On the Controls
page, click the Labware tab. Increase the
Stacker gripper offset . See “Changing labware
parameters” on page 154 .
Problem Cause Solution
For information about… See…
BenchCel Microplate Handler
component names “Hardware overview” on page 15
Software error messages “Software error messages” on page 139