Spectrum Controls 1756sc-OF8H Series A - Manual (Page 143)

Chapter 10: Maintaining Your Module And Ensuring Safety 129
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.
Preventive
Maintenance 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 system or damage to the
components.
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
Considerations
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.
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Chapter 10