Electrostatic Discharge (Esd) Considerations; Wiring Overview - Hach sc200 User Manual

for power, alarms, outputs or relays. Do not remove the barrier while power
is applied to the controller.

Electrostatic discharge (ESD) considerations

N O T I C E
Potential Instrument Damage. Delicate internal electronic components
can be damaged by static electricity, resulting in degraded performance
or eventual failure.
Note: To minimize hazards and ESD risks, maintenance procedures not requiring
power to the analyzer should be performed with the power removed from the
instrument.
The manufacturer recommends taking the following steps to prevent ESD
damage to the instrument:
• Before touching any instrument electronic components (such as printed
circuit cards and the components on them) discharge static electricity
from your body. This can be accomplished by touching an earth-
grounded metal surface such as the chassis of an instrument, or a metal
conduit or pipe.
• To reduce static build-up, avoid excessive movement. Transport static-
sensitive components in anti-static containers or packaging.
• To discharge static electricity from your body and keep it discharged,
wear a wrist strap connected by a wire to earth ground.
• Handle all static-sensitive components in a static-safe area. If possible,
use anti-static floor pads and work bench pads.

Wiring overview

Figure 7 shows an overview of the wiring connections inside the controller
with the high voltage barrier removed. The left side of the figure shows the
back side of the controller cover.
Note: Remove connector caps from the connectors before module installation.
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