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Little or no maintenance of ventilation systems leads to a build-up of dirt and other obstructions on filters, fan blades and ductwork which can restrict the flow of air and increase ventilation running costs by as much as 60%. Regular maintenance activities and checks will ensure efficient operation, save money and reduce the risks of plant failure.
- Identify the areas of the ventilation system that require maintenance. Remember natural ventilation systems will also need to be maintained. Check:
- window and door frame draught stripping is installed and undamaged
- vents are not obstructed and are free from a build up of dirt
- windows that should be used for ventilation can be opened
- drive belts move freely and are in good condition
- control sensors are calibrated and operating as expected
- dampers can move freely through their full operating range of movement
- filters are cleaned and replaced at regular intervals
- fan bearings are not worn or showing signs of damage
- fans are not corroded or damaged and that the blades are clean.
- Check control settings are correct and the system is operating in accordance with these settings.
Avoid overriding controls to overcome a short-term ventilation problem. If settings do need to be altered, make a note to revert the settings back to their original positions as soon as the problem has been investigated and fixed.
- Ensure air paths are followed by checking air inlets. Also check exhaust vents and ducting are not leaking and are clear of obstruction.
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