Labcyte Echo 550 - Page 88

4-6 Echo Liquid Handler User Manual
Emergency Off switch
The Emergency Off switch, also known as EMO (Emergency
Motion Off) switch, can be used in an emergency to shut
down mechanical Echo liquid handler activity. There are
two Emergency Off switches, one on the front panel and
one on the rear panel of the Echo liquid handler.
To use the Emergency Off switch in an emergency, push it in.
When to use the Emergency Off switch
 Any time the safety of the operator is in question.
 Any time strange, loud, or potentially damaging noises are coming
out of the Echo liquid handler.
 When the instrument door will not open and the source or
destination plate gripper stages collides with the door.
 If water is leaking from the Echo liquid handler.
 In any other situation that suggests immediate shutdown of the Echo
liquid handler is appropriate.
Using the Emergency Off switch
The Emergency Off switch performs the following actions:
 All motors are disabled.
 The coupling fluid pump is turned off.
 All pneumatic actuators are sent to their default positions.
 The anti-static bars are turned off.
 All RF devices (RF power supply, RF amplifier, RF switch, and so on)
are turned off.
 The HV grid is turned off.
 The internal controller aborts all processes in progress, returns an
error to the system invoking the aborted process, designates the three
stages as not calibrated, and goes into a halted state.
Activating the Emergency Off switch does not turn off the following:
 Internal Echo liquid handler controller
 AC power inside the Echo liquid handler power distribution panel
 Internal 24 VDC power supply (power output, however, is
interrupted)
 External communications (Ethernet, USB)
 Coupling fluid chiller