Swimming Pool Refurbishments
Swimming Pool Filter Maintenance
As a swimming pool, therapy pool or spa ages, it can be expected that the water filtration system will deteriorate. Also, as in many other aspects of construction and mechanical engineering, the technological advances of pool maintenance equipment mean that a pool plant room designed today will look and function quite differently from one built 20 – 30 years ago.
Natural deterioration will mean that older valves will not hold water or isolate correctly. Steel filters’ interior lining will deteriorate, oxidising the steel.
The protective coatings of modern filters are far enhanced on the older pool filters. The materials used were the best available at the time but recent advances in the technology of the specialist coatings used in current filters mean that they will last far longer and require less maintenance.
The sand and other media of the pool’s filters should be replaced every 4 – 6 years.
Pool Refurbishment Example – Marina Leisure Centre, Great Yarmouth
This was a ten week project, keeping the facility open to the public, hence maintaining the revenue stream. The project involved cutting up and removing three 8 ft diameter x 12ft high steel filters, complete with valves, cast iron pipework, 22kw pumps and heat exchangers. Replaced with four horizontal GRP filters, inverter driven pumps and a fully automated backwash / filter operation with full PLC control.
All designed, installed and commissioned by Pool Maintenance Ltd. This project was delivered on time and within budget.
Swimming Pool Heat Exchanger Maintenance
The older swimming pool heat exchangers bear no comparison with new heat exchanger systems. The older shell & tube installations are far less efficient than modern plate type heat exchangers. The footprint of the modern heat exchangers is far smaller than those of the older ones. Footprint in a plant room is critical – like the engine room of a ship. The footprint of a modern heat exchanger is the size of a desk printer in your office. The footprint of an old heat exchanger is the size of an office desk.
The carbon footprint of the modern heat exchanger is far smaller too. We still see some heat exchangers in use which are 20 – 30 years old and there has been a massive leap in the technology in this time, yielding huge energy savings and thus significant carbon footprint reductions.
Swimming & Therapy Pool Pipe Lagging Replacement
Damp and wet conditions in the ducting areas can degrade the pipe lagging. Older lagging systems used a plastic coating or a fabric wrapped insulation. Modern pipe lagging is made from highly cost effective, heat retaining materials. We now use a reflective aluminium foil which is far more efficient and durable.
When replacing old lagging, respiratory equipment is needed, as the old lagging can often contain fibre glass or asbestos. We double bag all of the waste lagging removed, as we are normally dealing with hazardous materials. The work is also usually undertaken in confined spaces, so only qualified engineers are able to do this work. All Pool Maintenance engineers are trained and qualified to work in confined spaces.
Pool Depth Reductions.
Swimming pool depth reductions are an increasingly frequent request. The usual reason for considering pool depth reduction is to achieve cost reductions. The deep end of many pools is often under-utilised.
When diving boards have been removed, the full capacity of a pool’s deep end is usually vastly under-utilised. Yet this water still requires heating and treating. It is often possible to reduce the water volume of a swimming pool by over 30 cubic metres. This can then yield significant cost savings on power and water treatment.
When undertaking pool depth reduction projects we now use a specific type of aerated concrete. Standard concrete is very heavy and using it can affect the structural integrity of the pool. The density of the mass weight can cause stresses, resulting in cracking of the pool walls. This aerated concrete is easier to handle, at a cost similar to standard concrete but without the structural risks.