Coil cleaning (condenser and evaporator)
A dirty coil is a high approach temperature and a high head pressure, both of which the unit is already measuring. Clean when the approach rises, not in April because it is April.
What does coil cleaning (condenser and evaporator) involve?
Coil cleaning (condenser and evaporator) checks: approach temperature, condensing pressure against ambient, air side pressure drop across the coil. Observed by temperature and pressure sensors already on the unit, read through the controller or BMS. The interval: a monitored condition can replace the fixed interval.
- Condition that replaces the interval
- Approach temperature (refrigerant to air or water) above the clean baseline by 3 C, condensing pressure high for the ambient, or coil differential pressure rising
- Reading that proves it
- Approach temperature, condensing pressure against ambient, air side pressure drop across the coil
- Evidence an auditor accepts
- Approach temperature trend per coil and the clean record it triggered
- First move
- Record the clean approach temperature on each unit after its next clean; that is the baseline.
What it is evidence for
Clause references from the published standards text. A clause marked reference is named, not reproduced.
Calendar tasks a monitored condition could replace ISO 55001:2014 9.1 · ISO 55001:2014 8.1 · ISO 55001:2014 6.2.2 · ISO 55001:2014 8.2 · ISO 55001:2014 10.3 · ISO 45001:2018 8.1.3
ISO 55001:2014 9.1 Monitoring, measurement, analysis and evaluationThe organization decides what is to be monitored and measured, which methods of monitoring, measurement, analysis and evaluation will give valid results, when monitoring and measuring take place, and when results are analysed and evaluated. It assesses and reports on how the assets perform, on how asset management perf...
ISO 55001:2014 8.1 Operational planning and controlThe organization plans, carries out and controls the processes needed to satisfy requirements and to deliver three things: the asset management plans set out under 6.2, the actions on risks and opportunities decided under 6.1, and the preventive and corrective actions decided under clauses 10.1 and 10.2. It does so by ...
ISO 55001:2014 6.2.2 Planning to achieve asset management objectivesThe organization joins up its planning for asset management objectives with the rest of its planning, including finance, human resources and other support functions. It sets up, documents and maintains asset management plans that state the method and criteria for making decisions, the processes and methods for managing...
ISO 55001:2014 8.2 Management of changeBefore any planned change is made, whether temporary or permanent, that could affect whether the asset management objectives are met, its risks are assessed, and the organization makes sure those risks are handled as 6.1 and 6.2.2 require. It controls changes it has planned and reviews the consequences of changes that ...
ISO 55001:2014 10.3 Continual improvementThe organization keeps making both its asset management and its system for it more suitable, more adequate and more effective.
ISO 45001:2018 8.1.3 Management of changeThe organization sets up processes to put in place, and keep under control, planned changes, temporary or permanent, that affect OH&S performance. These include: new products, services and processes, or alterations to existing ones (such as where workplaces are and what surrounds them, how work is organized, working co...
Do this for your whole schedule
Paste your maintenance schedule or log and get this classification for every line at once, with the findings, the overdue items and the clauses the register is evidence for. First 15 items free, no account.
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