The Thailand swimming pool shop has everything for your pool water     

The Swimming Pools Thailand warehouse holds one of the largest retail ranges of quality pumps that provide long, genuine guarantees and after-sales service. These pumps are mainly from Emaux, Speck, and ESPA. They are the only brands distributed in Thailand through fully accredited dealers, and they come with long, genuine guarantees.

Beware of pumps offered at significantly lower prices, they may be fake Emaux pumps, other cheap imports, discontinued/obsolete lines, or sold by individuals who are not able to provide after-sales support.

Choosing your swimming pool pump at Swimming Pools Thailand shop is not difficult - if you  follow certain rules.

The flow rate of a swimming pool pump is the most important consideration.  Although they may have the same horsepower (HP), due to different motor technologies and impeller design, swimming pool pumps and spa pumps can have different flow rates and deliver water at different pressures.

Flow rates also depend on how far the pump is from the pool. and/or its height above or below the waterline.  This distance is called the 'head'. Where a head is not mentioned, it is usually  assumed that  the pumping station will not be more than 4 metres horizontally from the pool, or the balance tank in the case of an overflow pool.

There is nothing to be gained by installing pumps that are too powerful, while pumps that are under-rated will need filtration times beyond the required 6-hour maximum. For optimal filtration, your pool volume in the tropics needs to be filtered fast - it should be turned over once every 24 hours in a maximum of 6 to 8 hours.  These recommendations are the result of careful scientific research into the growth rates of bacteria, algae, and other micro-organisms  and have been taken into law by the State of California and various states in Australia ^(references). Any other suggestions of filtration times are incorrect.

Swimming pools in Thailand are best filtered  completely once every 24 hours. A total of about 6 hours pumping time (in the tropics) every 24 hours is recommended. Pumps and filters should be matched - a filter should preferably have a slightly higher flow rate than the pump,  but if the pump and filter were not correctly matched, it is possible to pump for 8 hours. If more powerful pumps and larger filters have been installed, it may be possible to reduce the pumping time and save electricity.

Example 1: 10 x 5 metre pool, average depth 1.1m, volume 55 m^3. Pumping time 6 hours. Minimum required flow rate: 9.17 m³/hr.

Example 2: 20 x 5 metre pool, average depth 1.1m, volume 110 m^3. Pumping time 6 hours. Minimum required flow rate: 18.33m³/hr.

A pump's horsepower determines how quickly the pump can process all the water. The goal is for the pump to sufficiently filter all the water in a 6 to 8 hour period. Depending on the size and volume of your pool, you will need more or less horsepower to filter the water in that ideal time frame. Horsepower can be converted to watts, giving you a estimate of what your energy costs might be to run your pump.

HP vs Watts: One horsepower is equal to 745.7 watts. When you multiply 745.7 watts by 2.5 hp, you get 1,864.25 watts. Energy costs are calculated in kilowatt-hours, and to get kilowatt-hours, you multiply watts by hours and divide by 1,000. So, if you run your pool pump for 8 hours in one day, 1,864.25 multiplied by 8 and divided by 1,000 equals 14.9 kilowatt-hours. If you run your pump every day for an average of 30 days per month -- 30 multiplied by 14.9 -- your pump uses 447 kilowatt-hours in a month

If you run a 10 x 4 metre (average size domestic) pool for 6 hours using a 1.5HP pump, depending on the cost of your local EGAT electricity, the cost will be about ฿1,116 to ฿1,860 per month.

Safety: Due to inconsistencies in the electrical supply in many areas in Thailand, and the neighbouring countries in development, pumps of 1.5 HP and greater and all pumps being run through a salt water chlorinator should be connected through a contactor. They should be further protected by a surge protector. 380V 3-phase pumps should additionally be protected by an over/under voltage protector.

Bather safety: All electricity supplies for swimming pool equipment must be protected by a RCCB (residual current circuit breaker) also known as a ground fault circuit interrupter (GFCI). In many countries these are required by law  for domestic appliances that used in wet or humid areas; in modern buildings they are incorporated in the consumer unit. These electrical components are built-in as standard on all professional level control boxes manufactured by  SwimmingPoolsThailand.

Variable speed pumps: When considering variable speed pumps, the relatively low cost of electrical energy in Thailand should be factored in - the advantages of the more costly variable speed pumps may not necessarily produce an ROI as quickly as expected. See our separate article about variable speed pumps.

Reliability: In general, a reputable brand of pool pump should last for 6 to 8 years. We have installed Emaux pumps that are still running after 12 years of daily use.

Warranty: Guarantees cover parts and labour. They do not cover shipping costs or field service excursions.

Guarantees do not cover damage to pump motors due to incorrect, unreliable, or inadequately protected electricity supplies.

Guarantees do not cover damage to pump bodies and bearings on pumps that have been allowed to run dry or collapsed pump bodies due to closed supplyvalves, or melted/burst pump bodies due to closed discharge valves.

Guarantees do not cover damage done to stainless steel shafts from very aggressive water chemistry. Most pump brands only have a 1 year guarantee and parts and service may not always be readily available in Thailand. Emaux pumps are so reliable that the manufacturer offers a 2 year warranty; all parts and service are available here in Thailand at SwimmingPoolsThailand or from the manufacturer's other certified agents.

NEVER let your pump run dry. If you remove the lid to empty the strainer basket, prime the strainer box again before restarting the pump.

All swimming pool electrical sources should be protected by an RCCB (ground fault circuit interrupter (GFCI).

All 380V 3-phase pumps must be supplied through  a circuit equipped with  'over-under' phase protection.
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INSTALLING A PUMP

Install the pump as close to the pool as possible, preferably in a dry, well ventilated area away from direct sunlight. Protect the pump from excessive moisture.
Place the pump as close to the water source as possible, so that the suction pipe is as short and straight as possible to reduce the friction loss.

Before installing the pump, make sure that the surface is solid, elevated, and vibration free.

Secure the pump to the base with screws or bolts to limit the vibration and the stress on the pipe or the joints.
Leave enough space for gate valves in suction
and discharge piping, if required.
Connect the suction and discharge pipe to the
outlet and inlet of the swimming pool.
Make sure that floor drainage is adequate to
prevent flooding.
Make sure that the pump and piping are accessible for servicing.

*Don't hesitate to contact us for free advice and for free quotations for complete swimming pool technical installations.

Spare parts: We stock spare parts for all the Emaux pumps we sell.

HOTLINE 042 109 710 Mon - Fri 09:00 - 17:00, Sat 09:00 - 12:30 except holidays

Or call any of our regional stores or agents. We speak perfect English, French, German, and Swedish

This advice is offered as is, and SwimingPoolsThailand accepts no responsibility for its accuracy, interpretation, or implementation.

References:

Public Pool Regulations Department of Health Services, California. R-17-03B (2007)

Standard for the Operation of Swimming Pools and Spa Pools (PDF) Government of South Australia, Public Health Services (2013)

Pool pumps - the heart of the pool  Pool+Spa Staff (2014)

Energy Rating - Swimming Pool Pumps Government of Australia (2015)

Measure Guideline: Replacing Single-Speed Pool Pumps with Variable Speed Pumps for Energy Saving, A.Hunt and S.Easley (BARA) for  U.S. Department of Energy DOE/GO-102012-3534 (2012)

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