AL SERIES INSTALL OPERATION MAINTENANCE MANUAL
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1.1.10 Legionnaires Disease
Evaporative air conditioners have not been implicated in any outbreak of Legionnaires disease, although Legionella
bacteria have been found in such systems. The water temperature in the evaporative air cooler section is normally at
about 18°C at which temperature the Legionella bacteria (if present) will remain dormant and cannot multiply.
The following maintenance schedule is required to be followed in order to comply with the New South Wales Public
Health Act 1991 section 46:-
a. Sumps are to be drained and cleaned at three monthly intervals or more frequently if necessary.
b. Wetted pads are to be drained and cleaned at three monthly intervals or more frequently if necessary.
c. Water strainers are to be cleaned at three monthly intervals or more frequently if necessary.
d. If any air filter is fitted, it is to be cleaned or replaced when necessary.
SAFETY
