Frequently Asked Questions about Water Pumps, Borehole, Swimming Pools, Geberators etc...

What advantages do I get by installing a chlorinator?
There are many advantages of using a chlorinator. These include:

  • The feeling of water: The feeling of water in salt chlorinated pool feels is soft and non-irritational.
  • Smell: Salt chlorinated pools do not have heavy smell of chlorine.
  • Cost: Pools will chlorinators have lower maintenance costs. Due to regeneration of salt, there is no need of dosing chlorine daily.
  • Eyes/ Skin: For slat chlorinated pools there are no issues will eye and skin irritation. No red eyes!

How does a salt Chlorinator work?
Chlorinators generate chlorine by electrolytic process from salt pre-dissolved in the pool. The chlorinator uses electrolysis to break down the salt (NaCl). The resulting chemical reaction eventually produces hypochlorous acid (HCIO), and sodium hypochlorite (NaClO), which are the sanitizing agents already commonly used in swimming pools. As such, a saltwater pool is not actually chlorine-free; it simply utilizes a chlorine generator instead of direct addition of chlorine.

How does a Multi-Port Valve MPV work?
Most modern filters are fitted with a multi-port valve (MPV) to simplify filter operation. There are six positions on the MPV various operations possible. The positions, and hence the functions are: Filtration, Backwash, Rinse, Recirculation, Waste and Closed.

What is the difference between a deck level and free board pool?
As the name suggests, for a deck level pool, the water level for the pool is at the deck. For the free board pool, water level is 150mm below the pool deck. Structurally, deck level pools are characterized by a balance tank and an overflow channel around the pool. The overflow drains into the balance tank through the channel. Freeboard pools, also known as skimmer pools, are characterized by presence of skimmers. Surface contaminated water, normally within the first 100mm from water surface is drawn to the filtration plant through the skimmers

What is the cheapest way to heat my swimming pool?
Pool heating can be done through electricity, heat pumps and solar. Of the three methods, pool solar heating is the cheapest. However, it must be noted that pool solar heating is entirely dependent on solar radiation. This implies that it solar heating will not be effective on cold season (In Kenya, June to Mid August). For all year heating, a hybrid system can be considered. Heat pumps are great way to control the pool’s temperature and much more (4-6 times) more efficient than electric heaters. They are especially effective when used in conjunction with pool covers.

How do I prevent evaporation of water from my pool?
Absolute prevention of evaporation of water from swimming pool is impossible. This is because evaporation occurs at all temperatures. Evaporation though, can be minimized by use of pool cover either in blanket form or liquid (invisible).

How can I keep my swimming pool warm?
Swimming pools can be kept warm through heating. A cost effective way of heating swimming pool is by solar. A well sized pool solar heating system, in regions enjoying at least 8 hours of sunshine, will raise the swimming pool temperature by about 5-8C.
Swimming pool heat will be maintained by covering the swimming pool by a pool cover. Research has established that pool cover reduces heat loss by up to 80%.

Do you offer training on pool maintenance?
We conduct annual training of pool attendants. Please forward you contacts so that we can advise when the next training will be held

Do pools require a lot of maintenance?
Pools today offer a range of conveniences for the homeowner. However, beware of pool builders who offer 'maintenance free pools'. Have you ever heard of a 'maintenance free car'? Cost of maintenance of swimming pools include cost of chemicals, power bills for running pumps, salary for the pool attendant, etc.

What is the cost of a pool?
Like houses, pools vary in price depending on factors such as size, design and amenities. However, the shape of the pool should not affect the price of the pool. 

Can you maintain my pool for me?
Davis & Shirtliff Ltd. does not engage in daily swimming pool maintenance. However, we do provide plant room equipment (pump and filter) maintenance contracts. For the daily maintenance, we do have a list of recommended pool maintenance service providers. Please request a list.

Do you build swimming pools?
Davis & Shirtliff Ltd. does not engage in swimming pool construction services and other associated civil works. We, however, major in supply and installation of specialized pool equipment such as filters, pumps, skimmers and other associated accessories.

Does Davis & Shirtliff build swimming pools?
The company has previously been involved in the swimming pool construction but this has since ceased and instead the focus shifted to manufacture and supply of quality swimming pool equipment.