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Below is a list of pool-related definitions provided by "The Ultimate Pool Maintenance Manual" by Terry Tamminen

  • CAVITATION:
    Failure of a pump to move water when a vacuum is created because the discharge capacity of a pump exceeds the suction ability.
  • CENTRIFUGAL FORCE:
    The outward force created by an object in circular motion.
  • CHELATING AGENT:
    Chemical compounds that prevent minerals in solution in a body of water from precipitating out of solution and depositing on the surfaces of the container.
  • CHLORAMINE:
    A compound of chlorine when combined with inorganic ammonia or nitrogen. Chloramines are stable and slow to release their chlorine for oxidizing purposes.
  • CHLORINE LOCK:
    The term applied to chloramines formation, when ammonia is present in the water in sufficient quantity to combine with all available chlorine.
  • CORONA DISCHARGE:
    A method of producing ozone by passing electricity through oxygen and water.
  • CPVC:
    Chlorinated polyvinyl chloride. The designation of plastic pipe that can be used with extremely hot water.
  • CYANURATES:
    Chlorine sanitizer combined with stabilizers such as Dichlor and trichlor.
  • ELECTROLYSYS:
    The production of chemical changes (usually corrosion) in metal by passing an electric current through an electrolyte (usually water with mineral content).
  • EQUALIZER LINE:
    A pipe that balances the flow of water between two locations. Usually found in a pool skimmer, the equalizer line allows the suction line to draw water directly from the pool in the event that water level drops below the point where suction would normal occur from the surface.
  • ETHYLENEDIAMINE TETRA-ACETIC ACID (EDTA):
    A reagent used for testing calcium hardness, added a drop at a time until the solution turns blue. The number of drops is compared to a chart to evaluate the hardness of the sample.
  • FIREMAN'S SWITCH:
    An on/off control device, mounted in a time clock that turns off a heater 20 minutes before the time clock turns off the circulation pump and motor. This allows the heat inside the heater to dissipate before shutdown.
  • FLOCCULATE:
    The process of adding a chemical to a body of water which combines with suspended particulate matter in the water, creating larger particles that are more easily seen and removed from the water. Also called a clarifying agent or coagulant.
  • FLUX:
    The chemical compound applied to copper before soldering to enhance the even flow of the solder and to prevent oxidation of the metal when heating.
  • FUSIBLE LINK:
    A safety device located near the burner tray of a heater that is part of a control circuit. If the fuse link detects heat in excess of a present limit, it melts and breaks the circuit to turn off the heater.
  • GEOPHONE:
    An acoustic listening device used for leak detection.


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Duane's Pool Service
31858 Castaic Road, #327
Castaic, CA 91384
Phone: 661.295.0422
Fax: 661.295.9867
E-mail: dpservice@ca.rr.com