Evaporative Cooler Service

Evaporative Cooler Maintenance

Why have the evaporative cooler cleaned ?

Evaporative coolers collect windblown dust and pollen. This deposits in the units sump leading  to clogged filter pads, circulation pump problems and clogging of the units water distribution system and loss of cooling efficiency.

Regular maintenance  is  required  to  prevent the accumulation of dirt, growth of slimes and moulds within an evaporative cooler. Evaporative coolers are a potential source of Legionella which is a serious and sometimes fatal form of pneumonia.

Conditions that promote growth of Legionella in water include:

• Stagnant water
• Water Temperatures between 25 and 50ºC
• Sediment that tends to promote growth of legionella

Domestic  evaporative air conditioners should be cleaned before  summer. 

Commercial evaporative air conditioners should be regularly maintained and  cleaned in accordance with Australian Standard AS 3666.

Maintenance Process

Domestic evaporative cooler should be cleaned before operation each summer.This involves electrical disconnection of the unit, checking the condition of the filters and cleaning or replacing as necessary. Checking the water distribution system including the pump and water bleed-off system. The water pump should be cleaned and checked for bearing or impeller problems.The fan should  be inspected and any faulty parts replaced, such as the fan belt or bearings. The units sump should be flushed out and cleaned and the correct operation of the float valve checked.

The unit should be chemically dosed with disinfecting tablets to minimise the build up of bacteria, algea and mould.