Hach-Lange SC 100 - Manual (Page 16)

Wiring Safety Information
12
Installation
3.2 Wiring Safety Information
When making any wiring connections to the sc100 Controller, the following warnings and must be
adhered to, as well as, any warnings and notes found throughout the individual installation
sections. For more safety information refer to
Safety Information on page 5 .
DANGER
Always disconnect power to the instrument when any making electrical connections.
3.2.1 Electrostatic Discharge (ESD) Considerations
Important Note: To minimize hazards and ESD risks, maintenance procedures not requiring
power to the analyzer should be performed with power removed.
Delicate internal electronic components can be damaged by static electricity, resulting in degraded
instrument performance or eventual failure.
The manufacturer recommends taking the following steps to prevent ESD damage to
your 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.
3.3 Electrical Installation
High-voltage wiring for the controller is conducted behind the high voltage barrier in the controller
enclosure. The barrier must remain in place unless a qualified installation technician is installing
wiring for power, alarms, or relays. See
Figure 9 for barrier removal information.