News cost compared to the alternative . To also point out the obvious – time spent on sites is halved thus opening up any service provider ’ s book to be able to fit in more service calls in a day .
The table is a comparison on cleaning a 3m x 2m AHU using chemical application against water applied with a 20mm diameter hosepipe . In this example the hosepipe spews out approximately 80 litres of water per minute . It takes on average four hours to clean a coil of this size with water . In the process 20 000 litres of water are used .
This same task takes less than two hours using the chemical / compressor method . It uses two litres of chemical concentrate and 10 litres of SmartFinish to rinse . Zero tap / potable water is required at all .
Using this new world-leading method , cleaning split units , consoles , cassettes and condensors can all be carried out in less than half the time too . Several demonstrations have already proved this to clients and industry role players . The chemicals used are further 100 % environmentally safe and also clean out drainage pipes .
For the test example , the team used the cost of commercial water supplied by Johannesburg municipality , which not only charges for the water that is applied to clean the unit , a charge of an additional 90 % of that fee as sewage is added . This gives a combined R60.61 per 1000 litters of water used . The costing further amortises the price of the compressor required for the chemical application over a three-year period ( which includes two services per year ).
“ We have become fond of including the slogan to clients that ‘ if the contractor says he will clean with water , tell him to bring his own ’. Its an apt statement given the facts and figures presented . Our methodology has also been so well received that chemical coil cleaning will soon become a part of certain training providers ’ programmes that will enable candidates to be issued with certificates of achievement which is a notable step for industry to break into a new , better and more efficient way of cleaning and maintenance offerings in HVACR that benefits the clients with saving ,” Blow concludes .
To see for yourself how easy it is to clean a split unit or AHU , simply scan the QR codes below to watch the demonstration videos . In a humble view – even if input costs were equal , the opportunity to be more productive in a day is appealing in itself . RACA
www . refrigerationandaircon . co . za RACA Journal I January 2023 7