Regulation 2 min read Kyoto Mühendislik technical team
Maintenance is not a document to be shown at an inspection; it is the only proof that the system still performs as it did on day one. Maintenance without a record counts as maintenance not done.
What determines the interval?
Equipment type, running hours and ambient conditions are decisive. A residential split unit needs servicing once a year, while a commercial air handling unit in continuous operation may require two or even four checks a year. In dusty and greasy environments the interval shortens.
What should maintenance actually cover?
Cleaning the filter alone is not maintenance. Coil cleaning, drainage checks, belt and bearing checks, the tightness of electrical connections, refrigerant pressures and leak checks, and verification of air and water flow rates are all part of it.
Leak checks and records
Systems containing more than a certain amount of refrigerant must be checked for leaks and the checks recorded. The record covers the system's refrigerant charge, the checks carried out and any gas added. It is one of the first documents requested during an inspection.
What belongs in the report?
The work performed, the values measured, the calibration details of the instrument used, the non-conformities identified and the recommendations. A report that says nothing but 'compliant' is of no use either in an inspection or on site.
Following up findings
A deficiency identified during maintenance must stay on the follow-up list until it is closed. In our practice every finding has an owner and a deadline, and the closure is recorded as well.
Have a question?
If you would like an assessment specific to your facility on this topic, write to us for details on our measurement and reporting process.