AIR MOVEMENT


As a result, however, it can also leave your customers severely out of pocket. Taking a devil-may-care attitude to AHU servicing will certainly leave it energy inefficient and wasteful and, consequently, the cost to the building occupier of producing quality air will be far higher than it needs to be.


Besides, failure to maintain equipment


properly leads to accelerated equipment failure as vibration, environmental contamination, and general mechanical wear accumulate on AHU equipment.


For example, the failure to replace filters leads to increased pressure drop and greater


energy input from fan motors to maintain the desired conditions, or failure to inspect and tighten electrical connections leads to issues such as arcing, corrosion and premature failure.


The vast majority of the real cost of


maintenance is hidden. Direct costs – which include maintenance engineers, the spares they consume, and so on – are easy to measure, but have a relatively low impact on profit. It’s the losses below the surface that can really hit profitability. These include changeovers and breakdowns, minor stoppages and running at reduced speed, and rework losses.


Regular maintenance of any mechanical equipment is important because, if you can reduce the air leakage and condensation levels, then you immediately reduce internal contamination after the filters and corrosion from condensation forming on the AHU surfaces. This, in turn, leads to reduced maintenance costs as cleaning of internal components and treatment of corroded areas are reduced.


Refurbishment typically costs around 35% to 50% of the cost of new equipment, so it quite literally pays to keep your customers’ AHUs in tip-top condition.


Systemair 25


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