Labcyte Echo 520 User Manual page 132

Upper anti-static bar up/down
The Echo liquid handler can be commanded to lower or raise its upper anti-
static bar.
The upper anti-static bar can be raised or lowered regardless of the process
door or source plate positions. If the upper anti-static bar is commanded to
be lowered while the destination plate gripper stage is extended outside of
the Echo liquid handler, an "Actuate Ionizer Down Error" will appear.
The associated indicator lights report on the position of the upper anti-
static bar.
Coupler nozzle up/down
The Echo liquid handler can be commanded to raise or lower its coupler
fluid nozzle (also called the "bubbler") at any time.
The associated indicator lights report the position of the coupler fluid
nozzle.
Coupler pump on/off
The Echo liquid handler can be commanded to turn the coupler fluid pump
on or off.
The associated indicator lights report whether the coupler fluid pump is
turned on or off.
Coupler pump direction normal/reverse
The Echo liquid handler can be commanded to run its coupler fluid pump in
the normal or reverse direction.
The associated indicator lights report the direction of coupler fluid pump
flow.
Note: Do not run the pump in reverse for an extended period.
5-32 Echo Liquid Handler User Manual