WASHROOM TECHNOLOGY
by mixing it with the cold supply. This results in a safe water temperature of between 37˚C and 46˚C, depending on the application.
Automatic shut-off Furthermore, TMVs can maintain the desired water temperature even when the incoming water pressures / flow rates change, and will automatically shut off in the event of a hot or cold water supply failure. The recommendation is the use of thermostatic mixing valves (TMV3) anywhere where hot water is delivered for optimum safety.
Chris Tranter.
be set to site requirements of up to every 72 hours in 12-hour increments. Reducing the need for manual flushing, this helps to eliminate standing water, and can in turn prevent the growth of deadly waterborne bacteria such as Legionella. The primary method of eliminating bacteria is to maintain a high water temperature of 60˚C or above, which inhibits its growth. However, when water temperatures are this high scalding becomes a concern, especially in healthcare buildings housing vulnerable patients. One of the most effective ways of maintaining and achieving the balance between high water temperature and infection control is to specify products with an in-built TMV (thermostatic mixing valve), or, alternatively, an ancillary TMV. TMVs allow water to be stored and distributed at a high enough temperature to kill harmful bacteria – but they reduce it to a safe temperature at the point of use
Maintenance
Healthcare estates managers will often have a detailed strategy for washroom maintenance in place – but anything they can do to simplify the process will help to save time and money. Healthcare stakeholders should look for taps which, both comply with HTM 04-01, and reduce infection by simplifying servicing routines. For example, certain taps are available which combine patented integral thermal flush technology and tamper-proof, easy access isolation for quick thermal flushing in line with infection control measures. Whereas flushing a traditional shower can be a complex process, these products can take just minutes – making infection control quick and easy, and speeding up maintenance procedures for building operators.
Equally, products that are easy to install are always preferred. With infrared panels, no wiring is required when fitting, and they even include a pre-plumbed
An infrared non- touch basin tap, and, below, an infrared automatic basin wall spout – both from Bristan.
isolation inlet at the top of the panel for easy access for future maintenance. In sensitive healthcare environments, there are numerous factors to be considered when specifying washroom products. By choosing water delivery products that meet maintenance, hygiene, safety, and efficiency needs from the outset, estates managers can not only safeguard patients, visitors, and staff, but also cut utility bills and water wastage in the process.
hej
HTM 03-01 Heat & Ventilation
HTM 04-01 Water Systems
TRAININGDESIGNED FOR HTM COMPLIANCE
D Mechanical, Electrical and
Water Hygiene Training Courses Available in York, Slough and Onsite
HTM 06 Low Voltage
602 6-02
HTM 06-03 High Voltage
Mechanical Pressure Systems
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Call 0333 121 1215 • Visit
ppltraining.co.uk
May 2019 Health Estate Journal 65
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