Spectrum Controls 1756-CTR8, User Manual

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Owner’s Guide 0300199-01 Rev. D
Chapter 8
Maintaining Your Module
and Ensuring Safety
Read this chapter to familiarize yourself with:
•
Preventive maintenance.
•
Safety considerations.
The National Fire Protection Association (NFPA) recommends maintenance
procedures for electrical equipment. Refer to article 70B of the NFPA for general
safety-related work practices.
The printed circuit boards of your module must be protected from dirt, oil,
moisture, and other airborne contaminants. To protect these boards, install the
ControlLogix system in an enclosure suitable for its operating environment. Keep
the interior of the enclosure clean, and whenever possible, keep the enclosure
door closed.
Also, regularly inspect the terminal connections for tightness. Loose connections
may cause a malfunctioning of the SLC system or damage to the components.
WARNING
WARNING
POSSIBLE LOOSE CONNECTIONS
Before inspecting connections, always ensure that incoming power is
OFF.
Failure to observe this precaution can cause personal injury and equipment
damage.
Safety is always the most important consideration. Actively think about the
safety of yourself and others, as well as the condition of your equipment.
The following are some things to consider:
•
Indicator Lights
– When the module status LED on your module is
illuminated, your module is receiving power.
• Activating Devices When Troubleshooting – Never reach into a
machine to activate a device; the machine may move unexpectedly. Use
a wooden stick.