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While a Whole Store solution is almost always the best solution, for any number of reasons some operators may choose solutions dedicated to individual departments or appliances.
Hard water creates various maintenance and process problems in commercial applications. Scale deposits, created by hard water can be detrimental to the manufacturing process or have an effect even on the quality of final product. Scale build-up also causes reduced efficiency of heaters and heat exchangers, boilers, sprayers, etc.
Nimbus carries a number of compact, under-the-counter softeners to supply soft water for equipment such as coffee and espresso makers.
The TMI Series features a twin mineral tank systemgoverned by a meter initiated control valve. One softener tank is in service, delivering soft water, while the second softener tank is held in reserve. When the softening capacity of the service tank is exhausted, the control valve automatically switches the water flow to the reserve tank. The exhausted tank regenerates immediately and then becomes the reserve. This ensures a continuous supply of soft water without the risk of hard water getting into the service flow, making the TMI Series ideal for feed water pretreatment of commercial and industrial reverse osmosis systems.
Some chains and OEM’s of products such as combi-ovens have started mounting Point of Use reverse osmosis systems directly onto the equipment in stores that don’t have centralized reverse osmosis systems.
Two examples of systems that are used in these relatively low flow applications are:
- Small, conventional reverse osmosis systems with a 6 litre storage tank: Depending on whether they are installed with or without a booster pump, these systems can produce from 7.5 to 18 litres of water per hour.
- Cartridge reverse osmosis systems: Depending on whether they are installed as singles, twin parallel or triple parallel, they can produce from 4 to 12 litres per hour.
Nimbus has a selection of Reverse Osmosis systems ranging from 11 to 30 litres per hour that are compact enough to attach to appliances such as combi-ovens and Produce Misters.
Some chains have recognized the benefit of improving the quality of water feeding their appliances but have decided not to replumb their stores to provide reverse osmosis water to the whole store. One option is to use cartridge filters on the inlet side of the appliance. A few examples of cartridge filter applications are:
- A good filter can remove the chlorine and the suspended solids down to 1 micron and improve ice, coffee, etc.
- A better filter can remove the chlorine and any suspended solids, cysts or parasites down to 0.5 microns.
- The best filters can even remove elements such as lead, Trihalomethanes, VOC’s, MTBE, Cysts, Turbidity, Aesthetic Chlorine, Aesthetic Chloramines, Tastes and Odours.
These filters can be installed in series with the different filters each performing the task they are suited to or in parallel to increase the flow rate and/or extend the time between cartridge changes.
Applications include: Coffee & espresso machines, ice makers and beverage systems.
Again, a Whole Store system is the best solution but some operators want solutions for individual appliances and fountain pop systems. Flow rates of the various Nimbus solutions range from 4 litres to 19 litres per minute.
Two examples of cartridge filtration are:
- Simple Filtration removes chlorine and sediment down to sub micron size.
- At a slightly higher price, Nimbus can also provide specific solutions to safeguard against lead and almost any other contaminant.
One solution here is a High Flow Dual Media Scale Control Cartridge. These cartridges are effective at up to 30 grains of hardness per gallon. As a single cartridge the maximum flow rate is 6.3 litres per minute but this can be doubled or tripled by using twin parallel or triple parallel heads. The term between cartridge exchanges can be up to one year.
- Coffee makers
- Espresso machines
- Ice makers
POU Water Coolers
Many retailers are going to considerable expense providing water coolers in their offices, warehouses and store lunch rooms in the interest of keeping their employees healthy and productive. Bottled water coolers, in addition to the expense, have the inconvenience of handling bottles and the environmental impact of the millions of tons of green house gases handling and transporting water. In an effort to reduce the environmental impact of bottled water, some companies have turned to converted bottled water coolers. These coolers don’t always provide a level of purity and protection consistent with the high standards of the food industry. Inadequately designed and improperly maintained coolers can actually increase contamination levels and generate high levels of bacteria in a reservoir of unprotected water.
It is recommended that only NSF Certified coolers be used so that the worthy aim of eliminating the environmental impact of bottled water coolers is met while still providing a safe, fresh and better tasting drinking water.