High-Voltage Barrier; Electrostatic Discharge (Esd) Considerations - Hach SC200 Manual Básico Del Usuario

Figure 6 Top and bottom views

4.3 High-voltage barrier

High-voltage wiring for the controller is located behind the high-voltage barrier in the controller
enclosure. The barrier must remain in place except when installing modules or when a qualified
installation technician is wiring for power, alarms, outputs or relays. Do not remove the barrier while
power is applied to the controller.

4.4 Electrostatic discharge (ESD) considerations

Potential Instrument Damage. Delicate internal electronic components can be damaged by static
electricity, resulting in degraded performance or eventual failure.
Refer to the steps in this procedure to prevent ESD damage to the instrument:
• Touch an earth-grounded metal surface such as the chassis of an instrument, a metal conduit or
pipe to discharge static electricity from the body.
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