Most manufacturers recommend maintenance schedules with their equipment, along with maintenance manuals. Their recommendations should be followed for the first few cycles, and then judgement should be made if more or less maintenance is required.
A preventive maintenance plan should not only include the up-keeping of buildings, but also should include the up-keeping of grounds equipment, and other plant on site.
Frequency: Depending on the size of the system, the standard frequency is 6 monthly or quarterly. For very large installations, more regular visits may be required (weekly bell tests must also be carried out).
Frequency: Annual Inspection.
Frequency: Annual 3 hour soak test and monthly flick test.
HVAC & Air Handling
Frequency: Major service annual and a minor service quarterly.
Boilers and Water Heaters
Frequency: 2 visits; one major and one minor per annum.
Frequency: Annual inspection certification – Annual / 3 yearly / 5 yearly.
General Plant including Pump Sets, Air Conditioning Units, Generators and UPS Systems
Frequency: 2 visits one major one minor – greater frequencies for larger AC systems.