Hach SC4500 Instructions D'utilisation page 5

2.4 Icons used in illustrations
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Section 3 Installation
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Electrocution hazard. Remove power from the instrument before this procedure is started.
Electrocution hazard. 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.
Electrical shock hazard. Externally connected equipment must have an applicable country safety
standard assessment.
Make sure that the equipment is connected to the instrument in accordance with local, regional and national
requirements.
3.1 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.
• Avoid excessive movement. Transport static-sensitive components in anti-static containers or
packages.
• Wear a wrist strap connected by a wire to earth ground.
• Work in a static-safe area with anti-static floor pads and work bench pads.
3.2 Install the module
Install the module in the controller. Refer to the illustrated steps that follow.
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