There are 5 prominent types of Point of Use (POU) water coolers on the market. To assist your decision, we have provided below an overview of these cooler systems.
1. Tank (Reservoir) Fed Coolers
Aquarius X1 has traded in the mains fed chilled drinking water market for many years and has built up a reputation for providing high quality cooler units supported by a first class maintenance service
The majority of our business growth over the years has come from referrals and customer relations
We are able to provide National coverage for the supply and servicing (Repair) of POU water units both our own Aquarius X1 water coolers and other water coolers.
We believe in building a close working partnership with our clients, in constantly looking for opportunities to improve; and for innovation to keep the drinking water service provided to your staff alive and fresh.
In summary we believe we can fully satisfy all your company's requirements as discussed; in addition would add that we are privately owned and share the enthusiasm to work with your company and to achieve a high level of service and consumer satisfaction.
2. Tank Fed Coolers with UV lamp
- Due to high bacterial counts arising from carbon only filtration, it is advisable that reservoir systems are always fitted with a full, in tank UV with fail safe system. However, whilst effective in principle there are certain disadvantages to the use of UV and these are as follows:
The water in the reservoir takes a significant amount of time to recover to its ideal dispensing temperature..
Lime-scale can attach itself to the quartz sleeve if the correct cleaning procedure is not completed, this will reduce UV effectiveness. Whereas filter and UV lamp replacement must be pre-scheduled by the maintenance provider, it is very rare that thorough internal sanitisation is carried out by companies that are not water unit specialists. Although it is difficult to see if internal sanitisation has been carried out on these types of unit, an examination of the quartz should indicate of cleaning has ben thorough.
There is a "Quartz" sleeve surrounding the UV lamp. During cleaning the quartz sleeve must also be cleaned in order that the UV is fully effective. If this is not compiled with the UV can be ineffective and bacterial counts will rise.
The UV lamp can fail, but even if it does not the lamp has a limited life span, which starts to reduce from Day 1 of activation. UV requires replacement every 6 months. This requires monitoring and will incur additional cost.
The UV light needs to be placed in the middle of the tank and the tank needs to be made of stainless steel in order that the UV can reflect off against it, thus creating an environment less suitable for bacterial growth.
3. Tank fed units with AutoSan Protection
- A much more effective means of ensuring the drinking water dispensed is free of any contaminates is by ozonation.
- This is where an ozone controller unit (Such as the *SIP 2000 available from Aquarius XI) is fitted inside and it produces an electrical discharge (7500 volts) which turns the air (Oxygen) within the reservoir into "hyper-oxygen" which simply put burns up any bacteria cells and substantially reduces their ability to reproduce (THM's) or "stick" to the walls of the reservoir (Biofilm).
4. Direct Chill
- Far more advanced and offers significant hygiene benefits over reservoir technology. As the water enters the system filtered it passes into chill coil pipe and is chilled as it moves through the pipe to the point of dispense, providing a more consistent delivery of chilled water. As the water does not come into contact with air until it is dispensed, this system does not require UV inside the cooler and provides increased quality of product delivered coupled with obvious hygiene benefits. There are however a couple of significant drawbacks:-
- The volume of chilled water that can be dispensed at the optimum temperature is limited from direct chill units, therefore extra consideration should be given if the cooler is to be sited in a busy environment or if bottles, or jugs/flasks are to be used.
- Some customers can be mistaken that direct chill water coolers do not need to be sanitised. Such assuptions are misguided. Direct Chill water coolers also need to be sanitised regularly. The difficulty in sanitisation is that one has to "break" into the direct chill feed system and sanitise the system blind without the knowledge of what contamination occurs mainly from the tap end and rarely from the incoming water. By removing chlorine in the mains water through a carbon filter, bacteria has been removed prior to entering the direct chill system, thereby allowing bacterial contamination from the tap back into the cooler. As a further precaution Direct Chill water coolers need to be ozoned every 6 months.
5. Ice Bank Technology Units
- Ice Bank technology has emerged within the development of Point of Use water coolers to provide the customer with efficient and cost effective safe water supplies.
Ice Bank Technology allows filtered water to be continually chilled within the unit as whilst the water passes through the chill coil surrounding this coil is an Ice Bath which maintains water temperature continuall below 5 degrees Celsius.
Unlike the Direct Chill systems the Ice Bank technology is not restricted in its chilled water capacity; it provides a continuous supply of chilled water irrespective of demand.
Since water is supplied directly from the mains and directly chilled through the Ice Bank there is no stagnation (or contact with air), no need for UV and no potential for bacterial growth.