UNDER PRESSURE
Coping with variable water pressure doesn’t have to be a nightmare, according to Angus Drummond, Sales Director at Hydro Systems Europe.
Good water pressure and a consistent water flow are fundamental to the efficient operation of any chemical dispenser. A potential problem with the water supply is one of the most common concerns voiced by laundry owners prior to the installation of a chemical dispensing system.
Water pressure can be influenced by many factors. Low pressure can occur typically at different times of the day and similarly due to variable peaks reflecting seasonal demand. Low flow rates and low pressure have a range of contributory causes that can be a result of geography, the aftermath of periods of extreme weather conditions; as well as those arising from more strategic issues, such as the long-term consequences of insufficient water company investment in infrastructure and reservoirs.
These broader factors impact on and amplify the more localised problems of laundries, where water pressure can vary from building to building – and even from one area in a facility to another.
Low or varying water pressure can affect the performance of the eductor or venturi in your dispensers with a significant impact on their accuracy. Without the means to regulate pressure you will have to deal with the issue of inconsistent dilution rates.
Quite apart from the inconvenience of downtime, there is the additional impact on your bottom line from rewashing to be considered; also the extra costs incurred from the overdosing of chemicals and the negative impact on your reputation with customers. Since the UK is the region where Hydro encounters the
34 | CHEMICALS & DOSING EQUIPMENT
issue of low water pressure most frequently, these problems will be familiar to many.
GOING WITH THE FLOW To manage variable water pressure, you should look for a dispensing system with a component to regulate the pressure and eliminate dilution variance by controlling the amount of water allowed into the unit. With a regulated water pressure system, you will get even greater accuracy over the long-term because the exact same bar pressure is assured on every cycle. The simplest and most common way to address this problem is fitting a pressure regulator, integrated flow control washer or AccuPro device.
The AccuPro functions as a restrictor of flow. It is not available as a separate item but is offered ready built into
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