This semiannual preventive maintenance checklist is designed for water treatment sand filter skids. It guides technicians through site safety and equipment care, including leak checks, review of daily records for trends, cleaning of the backwash controller, cleaning the pilot valve and strainer, wiping down the entire skid, sanitizing the unit, and verifying that no diagnostic errors are present on the controller. It also prompts for key job details like location, work order number, and maintenance hours to support accurate logging and compliance.
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