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Technical Advice and Information for Swimming Pool Owners


The Following is a basic guide to some of the routine jobs you will need to perform in order to keep your pool fresh, clean and safe.

» To Backwash The Filter » FREE Pool Water Testing Service
» To Vacuum Pool Through Skimmer » Filtration Running Time
» To Clean The Pump Basket » Pool Water Level
» To Prime The Pump » Leaking Pool
» To Clear a Green Pool » Further Services Available
» To Clear a Cloudy Pool » Pool Maintenance DVD
» To Calculate Pool Water Capacity » Going on Holiday?
» Ideal Pool Chemicals Levels    


To Backwash The Filter

  • Run flexible pipe out to drain or soakaway
  • Switch off pump
  • Open backwash valve (if fitted)
  • Turn multi-port valve handle to 'BACKWASH' position
  • Switch on pump
  • Wait until sight glass clears (approx. 1-2 minutes)
  • Switch off pump
  • Turn multi-port valve handle to 'RINSE' position
  • Switch on pump for 20-30 seconds
  • Switch off pump
  • Turn multi-port valve handle to 'FILTER' position
  • Switch on pump
  • Roll up flexible pipe
  • Close backwash valve (if fitted)
  • Top up pool with fresh water
  • Continue filtering until pressure rises to 5lbs above
  • normal (approx. 1-2 weeks) then carry out backwash
  • procedure as above.
  • NOTE: Switch off automatic pool cleaner (if fitted) until backwash and rinse procedures have been completed.
  • When backwashing, all suction valves should be left in
  • normal 'FILTER' position (normally all open)

To Vacuum Pool Through Skimmer

  • Leave pump running in normal 'FILTER' cycle
  • Close main drain valve only. If 2 skimmers are fitted close 1 off by plugging hole beneath the basket.
  • Attach telescopic 'vacuum handle' to 'vacuum head'
  • Attach 'vacuum hose' to 'vacuum head'
  • Drop 'vacuum head' in pool and hold other end of hose over pool inlet to expel air
  • Attach 'vacuum plate' to end of hose
  • Remove floating 'collar weir' from inside skimmer basket (if fitted) and position vacuum plate on top of basket.
  • Vacuum pool until clean
  • NOTE: Do not allow skimmer basket to 'clog'

To Clean The Pump Basket

  • Switch off pump
  • Close all suction valves (skimmer, main drain etc)
  • Turn multi-port valve handle to 'CLOSED' position
  • Open pump lid, remove and clean basket (you will lose a little amount of water from pipes)
  • Replace basket and tighten down lid (make sure lid 'O' ring is not damaged and all debris removed which may prevent a good seal)
  • Turn multi-port valve handle to 'FILTER' position
  • Switch on pump and after 3 seconds open main drain valve only. Allow pump to gain full prime,
  • Slowly open skimmer valve (if pump loses its prime continue to run for up to 5 mins until prime is regained).

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To Prime The Pump

  • Close all suction valves (skimmer, main drain etc)
  • Turn multi-port valve handle to 'FILTER' position
  • Open pump lid
  • Fill pump with water from a bucket or hose pipe.
  • Replace lid (make sure all debris is removed, which may prevent a good seal)
  • Switch on pump and after 3 seconds open main drain valve only. Allow pump to gain full prime
  • Slowly open skimmer valve (if pump loses its prime, continue to run for up to 5 mins until prime is regained)

To Clear a Green Pool

  • Test water and adjust pH to 7.4 by adding pH- (Dry Acid) or pH+ (Alkali).
  • Add Liquid Chlorine (Sodium Hypochlorite) at the rate of 5 litres for every 2,500 gallons of pool water.
  • Pour chlorine around perimeter of pool and run the filtration continuously.
  • Leave solar cover off the pool (if used) until pool is clear.
  • After approx. 24 hours the water should clear.
  • If the pool is cloudy, see below.
  • Remember to check pressure gauge on the filter and backwash if necessary, (sand filters) or if you have a cartridge filter, clean elements by hosing off once a day, until water is clear.
  • If the water is still green, after 48 hours, repeat treatment as above.

To Clear a Cloudy Pool

Method 1 (Pool Only Hazy)

  • Run filtration continuously.
  • Backwash filter (Sand Filter) or clean elements (Cartridge Filter).
  • Add ‘Pool Bright & Clear’ clarifying liquid to surface the pool and/or ‘Sparkle Tab’ filter aid tablets to the skimmer basket.

Method 1 (Pool Very Cloudy)

  • Remove cover from pool.
  • Choose a period when pool is not in use and sprinkle a solution of ‘Granular Floc’ onto the pool and circulate water for approx. 1 hour on ‘Recirculate’ position until thoroughly mixed.
  • Turn off the pool filtration and allow the ‘Floc’ to settle onto the pool floor (approx. 12 hours).
  • Vacuum the pool direct to waste.
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To Calculate Pool Water Capacity

  • Square or Rectangle Pools = Length x Width x Average Depth x 6.25 = gallons
  • Round or Oval Pools = Length x Width x Average Depth x 4.90 = gallons
  • e.g. 28’ x 14’ Pool with 3’-6’ water depths = 28’ x 14’ x 4.25 x 6.25 = Approx. 11,000 gallons
  • NOTE: Always dissolve powdered pool chemicals in warm water before adding to pool

Ideal Pool Chemical Levels

  • Chlorine = 1.5 p.p.m. } Test using ‘DPD No.1’
  • Bromine = 3.0 p.p.m. } Testing Tablets
  • pH = 7.2 - 7.6 Test using ‘Phenol Red’ Testing Tablets

FREE Pool Water Testing Service
If you are experiencing problems, drop in a water sample and we will test it for you free of charge, usually within 24 Hours.

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Filtration Running Time
8 hours per day minimum (can be split into 2 periods) longer if pool is heavily used during hot summer months, or when heating pool initially.

Pool Water Level
The correct level for the pool water is mid-way across the skimmer mouth. Never allow level to drop below skimmer mouth when the pump is running.

NEVER - Empty your pool without taking expert advise. Extensive damage may occur.

Leaking Pool
Repair patches are available allowing you to repair a torn or holed liner, without draining the pool. DIY leak detection kits are also available from our pool shop.

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Further Services Available

  • Underwater Dye testing by Diver
  • Underwater repairs by experienced Diver
  • Pressure testing of pipework above or below ground
  • Inspection and testing of filtration equipment.

Ring James-White Pools for expert advice and service.

Pool Maintenance DVD
Available for 48 hr rental or purchase, this invaluable dvd covers all aspects of pool maintenance.

Going on Holiday?
Call in and pick up a Chlorine “Holiday Tablet” - It lasts for two weeks

We recommend the use of ‘CLEAR N CLEAN’ our six month algaecide to ensure a crystal clear pool. Ask for details.

Please ask for membership details of our ‘PRIORITY SERVICE CLUB’

- ENJOY YOUR POOL -


For more information, please contact us on: 0118 930 5000 or email: sales@jameswhitepools.co.uk 

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James White is a trading name of CAW (Group) Limited registered in UK number 08775435.
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