Hach-Lange SC 60 - Manual (Page 16)

12
Installation
3.2 Wiring Safety Information
When making any wiring connections to the sc60 Controller, the
following warnings must be adhered to, including 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 that donot require 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 done 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
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 the wiring for power, alarms, or relays.
See
Figure 9 on page 13 for barrier removal information.