Hardware/Software

Chapter 7
Periodic Maintenance
7–3
Tests & Records Final Check Out – After maintenance or repair of industrial controls,
always test the control system for proper functioning under controlled
conditions that avoid hazards in the event of a control malfunction.
“Keep Good Maintenance Records” – This rule will be most helpful in
locating possible intermitttent problems by pointing to a particular area of
recurring trouble within the overall system. Further, good maintanance
records will help reduce major costly shutdowns by demanding the use of
proper test equipment and an appropriate inventory of spare parts. For
additional information see NFPA 70 B, RECOMMENDED PRACTICE
FOR ELECTRICAL EQUIPMENT MAINTENANCE, published by the
National Fire Protection Association.