If you use a water fed pole system then you will know that the harder the water that you process is, the higher the running costs of your system will be. Producing pure water fit for use with a water fed pole involves filtering normal water and extracting from it all the chemicals and dissolved solids. Logically, if the water is hard and contains high levels of total dissolved solids (TDS),  the filters and resin which work to separate these from the pure water will be consumed and wear out more quickly than if the water is soft and contains very few dissolved solids. An effective way of immediately producing pure water is by deionising normal water, passing it through a pressure vessel containing mixed bed resin. (Typically referred to as a DI vessel). Using this system pure water is produced on demand very quickly simply by connecting the vessel to the water supply. The main advantage of this method is the speed and simplicity in which you can produce pure water. You generally don’t need a large tank in your van.

With the permission of a kind customer, you can refill very quickly on the job or work directly from their tap. Another important advantage is that no water is wasted in the purification process. However, most window cleaners use a different method of producing pure water -   Reverse osmosis. Put simply, reverse osmosis is a process where only pure water is allowed to pass through a membrane and the rest goes down the drain. A typical reverse osmosis unit used by window cleaners involves a 5 stage process, whereby water is first softened, then filtered and finally polished. The process is much slower than a DI set up and so space for a static tank is usually necessary to store the water. Pure water is then  transferred to a tank in the van either by gravity or more commonly by a submersible transfer pump. To produce 500 litres of pure water a typical RO unit with a recovery rate of 25% will reject 1500 litres of water, meaning a total of 2000 litres of water used. An average water fed pole user would use 500 litres of water in an 8 hour day.

A two man team of window cleaners could get through 1000 litres in a days work. Used Prom Dresses Reading PaOver the course of one month, that means they could use up to 80,000 litres of drinking water to run their system. Catamaran Bay Boats SaleMuch of the efficiency of the RO unit depends on the mains pressure. Kitchen Curtains With PeppersThe lower the pressure, the higher the rejection rate. So some choose to buy a booster pump to increase efficiency. Given all the extra expense and added complication using an RO set up, why is it that the majority of window cleaners choose to use this system to produce pure water? The problem lies in the expense involved in using a resin only system. A 25 litre bag of mixed bed resin typically costs £70 – £80 and only produces 5000 – 7000 litres of pure water (where the input water TDS level is 100). 

Since many window cleaners live in hard water areas, using the resin method on its own would be just too expensive. In a soft water area where the TDS level is less than 100, lets say 50, the resin will last twice as long. Where two DI vessels are used in series the resin life will be extended even further. (Where only one vessel is used, the resin must be replaced as soon as the output TDS level begins to rise. However, as long as the output TDS level is substantially lower than the input level, this resin can still be used as a pre-filter for a second vessel.) So in a soft water area, the practical advantages of a DI only set up make it a sensible choice. If only everywhere was a soft water area…….Window Cleaning WarehouseTake a look below at the WCW AUCTION LIST for the upcoming window cleaning show. Lots 1-6 Carbon Fiber WFP's 30'-55' inc 55' EDGE 3K (RRP £849 + VAT) at No Reserve! Lot 7 Mixed Pallet of items, sold as seen, No Reserve! Lot 8 Mixed Pallet of Coils of Hose, 5mm, 8mm, 12mm Limited Quantity!

Lot 9 Mixed Pallet of Portable RO Systems, sold as seen, No Reserve! Lot 10 Mixed Pallet of Poles and brushes and stuff From £5 each Lot 11 FaceLift Compact D.I. 325 Van System (RRP £895 + VAT) Low Reserve Lot 12 FaceLift Phoenix 650 2man RO system, worth £4K! Low Reserve Window Cleaning WarehouseMike talks us through an install just before it goes out to the customer. Check out purewaterguide.co.uk for everything you need to know about waterfed cleaning2 Job, 1 Van… – Pure Water Equipment GuideWindow Cleaning Warehouse shared their post.Its getting close, don't forget to check out all our auction lots for saturdays trade show? Great stuff, great prices!Lots 1-6 Carbon Fiber WFP's 30'-55' inc 55' EDGE 3K (RRP £849 + VAT) at No Rese...rve! Low Reserve Window Cleaning Warehouse--> ** NEW VIDEO ** <-- A quick tip to help you save money on resinHow To Make Your Resin Last LongerWindow Cleaning Warehouse--> ** VAN HIRE ** <-- Top of the range equipment, great daily price. Drop us an email or give us a call for more info. contact info below. info@windowcleaningwarehouse.co.uk... 01446 749 060 Window Cleaning WarehouseFaceLift Razr rubber or the standard black rubber, which is better? Let us know your thoughts!Window Cleaning WarehouseWhat's the oldest tool in your kit? We'd love to know what's lasted you the longest!Window Cleaning Warehouse--> ** YET ANOTHER EXCLUSIVE ** <-- The Phoenix Sill Brush!

Now available at the link below http://www.windowcleaningwarehouse.co.uk/facelift-phoenix-s…Window Cleaning Warehouse shared their post.Just a reminder, our entire auction list for the coming trade show is available below. Expect low reserves and incredible prices!Low Reserve Window Cleaning Warehouse shared their post.remember to keep an eye out for our auction at the trade show next week. Low Reserve Window Cleaning Warehouse--> ** INTRODUCTORY OFFER ** <-- The all new **FISHSCALE MICROFIBRE CLOTHS ** Designed EXCLUSIVELY for FaceLift. - Higher Absorption - Textured Fishscale Weave - Ultra Fine Glass Cleaning Microfibre Currently on offer - Choose the Pack of 10 or 100 options for unbelievable Window Cleaning Warehouse--> ** NEW ARTICLE **<-- The WCW elves have devised 3 simple steps to help you earn more money as a domestic window cleaner.3 Steps to Earning More as a Domestic Window CleanerWindow Cleaning WarehouseHi everyone, we really hope to see as many of you as possible at the upcoming window cleaning show. As always WCW will be offering some one off deals. But also we will be conducting an auction every half hour. What items would you lot like to see us auction off, no restrictions. We already have most lots arranged but we are open to a few suggestions. The auction list will be announced prior to the show....Window Cleaning Warehouse--> ** The Tidiest your van will ever be! **