Escalator step chain is an important component of an escalator that requires proper maintenance to extend its lifespan.  Here are some tips on how to maintain escalator step chain to extend its lifespan:

Regular cleaning: By removing dirt and debris, escalator step chain can last longer when free of dirt and contamination, and actually decreases the possibilities of parts for repair or replacement.  It is recommended to clean the escalator step chain at least once a week to prevent dirt and debris from accumulating.

Proper lubrication: Lubrication is essential to keep the escalator step chain running smoothly and to prevent wear and tear.  It is recommended to use a high-quality lubricant that is specifically designed for escalator step chain.

Tension adjustment: Each mechanical part of an escalator can withstand a certain amount of pressure and stretch.  If over that amount is applied to the desired part, it will break, fracture, tear, bend, etc.  Therefore, it is important to adjust the tension of the escalator step chain to the correct level.  It is recommended to adjust the tension of the escalator step chain every six months.

Regular inspection: Regular inspection of the escalator step chain can help identify any potential problems before they become serious.  It is recommended to inspect the escalator step chain at least once a month.

Proper use: Proper use of the escalator step chain can help prevent damage and extend its lifespan.  It is recommended to avoid overloading the escalator and to avoid using it for purposes other than transportation.

In addition to these tips, it is important to follow the manufacturer's instructions for maintenance and to seek professional help when necessary.  By following these tips, you can extend the lifespan of your escalator step chain and ensure that it operates smoothly and safely.