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Posted By NatashaL
Hi
I was wondering if there is a requirement for air conditioning systems within the workplace to be serviced at any set period of time i.e on an annual basis etc?
Does anyone have any info on this?
Thanks
Natasha
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Posted By John Lewis
Natasha
I think that the manufacturers recommendation should be followed as far as maintenance goes. There is no issue of Legionella in a split sytem A/C unit because there is no aerosol being created outside the unit. Nevertheless, disinfecting the unit once a year is good practice and can result in a very pretty display of bubbles if the unit is turned back on too soon after being sprayed with detergent.
John
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Posted By Charley Farley-Trelawney
Natasha
For a sealed VRF/VRV system the manufacturers servicing requirements should be followed. The most likely areas of concern would be the filters, cleaning/changing 3 monthly, 6 monthly etc depending on condenser location, packaging units require a slightly more thorough service. In any event if you do not keep the coils, filters clean, the working ability will suffer greatly; e.g. if the condensers are sighted outside in dusty areas you may need to consider more frequent cleaning. The worst case scenario with this type of system is a refrigerant leak, once this occurs it may take days before you can re-gas and carry on. Don't forget, there are specific requirements from an environmental point of view that require you to take appropriate action if you start having leaks on a frequent basis, you would be foolhardy to keep repairing the offending area; replacement of the parts would be more acceptable.
I can't comment on wet systems (cold water) as I have no knowledge of these particular units.
CFT
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Posted By John Lewis
Charley has covered a lot of additional good points which I will not go over again. From an operational point of view my experience suggests that it is often best to site the control box above ceiling height and set it to 21C. Apparently most A/C units are set to be most efficient when running at 21C room temperature. I have seen problems in the past when people put the temp' down to 16C as, especially in humid weather, the outdoor unit ices up and the whole unit trips out.
Depending on the dust in your area, beware of washing out the cooling fins on the outdoor unit. Sometimes the dust can set hard and dramatically reduce the efficiency of the unit. Result, more power consumption and less cooling.
Last point, identify the units indoor and out. It aids correct isolation when maintaining the units if there is a long pipe run and a number of units in the same area.
John
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Rank: Guest
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Posted By NatashaL
Thanks very much guys for your advice with this.
Natasha
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