Hach sc100, User Manual

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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 7 .
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
DANGER
This equipment is suitable for use in non-hazardous locations or Class 1, Division
2, Groups A, B, C, D Hazardous Locations with specified sensors and options when
installed per the
Hazardous Location Installation Control Drawing on page 10 .
Always refer to the Control Drawing and applicable electrical code regulations for
proper installation instructions.
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 10 for barrier
removal information.