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Air Release Valve
The valve on the top of a filter or seperation tank which allows you to manually release the air out of the system. This reduces the risk of a filter or separation tank explosion.
top Microscopic plants capable of rapid reproduction, different types of algae are differnt colors.
topProducts that prevent or control algae growth.
topMicroscopic organisms some which are harmful to bathers.
topThe proper ratio of mineral content and pH that prevents pool water from being corrosive or scale forming.
topConnecting together all the metal items (ladders, diving platforms pumps, etc.) around the pool or spa with heavy wire (the "bonding wire"), so that there can be no difference in voltage between them. This helps prevent electrical shocks from pool equipment.
topA halogen element; alternative sanitizers for pools, widely used in spas and indoor pools.
top(CH) The amount of dissolved calcium in the water.
topA device to automatically feed small quantities of chlorine into the pool to help keep the water disinfected. Some pool systems use bromine compounds. never mix the two.
topA halogen element; compounds of which are widely used in pool and spa water sanitation.
topIrritating compounds formed by the combination of nitrogen compounds and free chlorine, can cause a strong cholrine odor to pool and spa water.
top The amount of chlorine needed to destroy organic contaminants and establish a stable residual for effective sanitaion.
topThe amount of chlorine (total chlorine ) in pool water.
topChlorine which is bonded to nitrogen compounds.
topProduct used to lower pH and total alkalinity; preferred over muratic acid (HCl) for handling, storage and safety issues.
topA device to clean pool water by filtering out dirt oils etc.. Filters may use diatomaceous earth (DE), cartridges with a fine nesh element, or sand bed as a filtereing agent.
Sand Filter = 50 Microns
Cartridge Filter = 15 Microns
DE Filter = 4 Microns
topChlorine in a form capable of bacteria and algae destruction, free chlorine in a pool has no odor.
topprotective covers for the main drains Each main drain must have a cover that is IAPMO certified to be of anti entrapment and anti hair entanglement design and ASME rated for the flow that it must handle. It must be correctly instaled with screws> Operating a pool without proper covers on the main drains is extremely dangerous
topa device to interrupt the power supply to a piece of equipment when it senses very small electrical leaks to the ground or to the pool water. It will cut off power in dangerous circumstances which mighte not cause a circuit breaker to trip or a fuse to blow
topconnecting each piece of electrical equipment around the pool to a "ground wire" which is connected to the electrical system ground at the circuit breaker box. Grounding your equipment helps ensure that the circuit breaker will trip and cut off power in the event of a short circuit or damage to insullation
topA device to automatically heat pool or spa water to the desired temperature and maintain it there. A heater typically has automatic themostat controls, and may be controlled by a time clock
topthe recess in the side of the pool to take an underwater light
topthe fitting on the bottom of the pool which leads to the main circulating pump's inlet pipe. All pools and spas should have more than one main drain (except some above ground pools which use the skimmer as a suction outlet). Since there can be a strong suction pull at the main drain, for swimmer protection it must be equipped with a correctly installed, anti-entrapment and anti-hair entaglement certified cover, fastened with screws
top(see shock treatment)
topThe pump that moves water from the pool and pumps it back to the pool through the filter, heater, chlorinator, etc.. When the pump is working properly, there will be a strong suction at the suction outlet. anything sealing off the outlet (on a system with only one suction outlet) will be held there by suction of the water trying to flow to the pump
topa way to measure the acidity or alkalinity of water. This is the most important part of chemical balance
topParts Per Million, a measurement for chemical concentration
topa value based on water temperature, total alkalinty, calcium hardness, and pH. The value predicts the tendency of pool water to be corrosive, neutral or scale forming
topCoarse calcium or silicate deposits on swimming pool walls, floor and circulation plumbing, especially in heat exchangers
topadding an oxidizing compound to the pool water to chemically break up (oxidize) contaminants such as suntan oils, cosmetics, perspiration, metal ions and windblown dirt
topa box set into the edge of the pool with mouth open to the pool, just at water level. It connects to the main circulating pump suction pipe. It channels both water to the pump and skims leaves, debris etc., off the pool surface. A removable deck cover allows for cleaning
topform of chlorinating compound used to sanitize pool water. Favored for its economy and ability to remain active in strong sunlight
topCyanuric acid; a compound that prevents the destruction of chlorine residual by sunlight
topany fitting that allows water to go back from the pool to the main circulating pump
top adding enough chlorinating compound (3 to 5 times usual dosage) to destroy chlorine demand compounds and combined chlorine
top(TA) the amount of the alkaline components in water. TA acts as a buffer against rapid pH fluctuation
topSubstances introduced in the water by people or the enviornment that interfere with the ideal pool conditions
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