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7-2. Routine maintenance
(1) Regular inspection of products
Although the programmable controller has certain anti-interference and strong stability, it should also form the
habit of regular inspection and maintenance of the controller. The inspection items include:
Whether the input and output terminals and power supply terminals of PLC are loose
Whether the communication port is intact
Whether the power indicator and input / output indicator can be lit
Remove the accumulated dust outside the PLC to avoid dust and conductive dust falling inside the
PLC
Try to make the PLC operation and storage environment conform to the standards described in section
2-1-1 of this manual.
About the battery
(2)
There are no components inside the programmable controller that can seriously shorten its service life, so it can
be used all the time. However, if it is a PLC with clock function, the battery shall be replaced regularly.
The service life of the battery is generally 3-5 years.
Please replace the battery as soon as possible after the battery power drops.
After replacing the battery, please power on the PLC immediately, otherwise the battery may be
exhausted.
Discard
(3)
If you decide to discard this product, please treat it as industrial waste.
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