Hayward Sense and Dispense User Manual

POOL THAT HAD THE PROPER AMOUNT OF FREE CHLORINE.
6. Ifthesystemisnotstabilizing(ordoesnotseemtobestabilizing)thereare3thingsyoucan
do:
a. Clean the probe
b. Rebalance the pool –including the free chlorine level
c. Check for combined chlorine—if high (>0.5ppm), shock treat with chlorine or non-
chlorine shock
Controlling pH with the OmniLogic
Plaster pools and pools serviced by salt-chlorine generators typically cause a slow pH rise which
must be managed. With the Sense and Dispense technology, CO
2
or acid is dispensed into the
filter system’s return water as needed until the pH probe reports proper pH level.
The Hayward AQL-CHEM2(-240) are CO
2
dispensing systems that eliminate the need to handle
acid and are economical and efficient methods for effective pH control. When the CO
2
gas is
injected into water, it dissolves and becomes carbonic acid, a weak acid that is very effective at
lowering pH but becomes self-limiting if over-fed.
CAUTION: IF YOU CHOOSE AN ACID FEEDER FOR pH CONTROL, additional safety precautions are
requiredtoensurethatanequipmentmalfunctionisdetected.Greatcaremustbetakenwhenin-
stalling, maintaining and operating acid pump feed systems. Acid is dangerous to handle, and will
harm people and equipment if not properly contained, transported, poured, stored, and dispensed.
CAUTION: Equipment failure can potentially cause too much acid to be dispensed into the water,
causing an equipment and health hazard which would not be detectable without the use of inde-
pendent pH measurement.
• Alwaysusea4:1dilutionintheacidfeedsystem.
• CAUTION:Topreventaviolentreaction,ALWAYSADDACIDTOWATER,neveraddwatertoacid
to dilute it. Some use the rhyme “Remember, do as you oughta- add acid to water”
• Strictlyfollowtheacidvendor’ssafetyandhandlingprotocolsincludinghand,bodyandeye
protection when transferring or handling acid.
• Choosea5gallonperdayacidfeedpumptokeepowratelow.
• Limittheavailableacidreservoirto1gallonper15,000gallonsofwater.Thislimitstheavail-
able acid in the event that equipment malfunctions and empties the tank into the pool or spa.
• OnlyaproperlyinstalledandmaintainedsystemwillcontrolthepHandsanitizerlevelsofthe
water.
• WARNING:Ifacidisnotdilutedproperlyorthefeedpumpisoversized,itwillovershootthepH
correction.
• Atleastmonthly,useanindependentpHandchlorinetestkittoverifythatpHandchlorineare
at a safe level. If the probes are broken, depleted, dirty, fouled with oils, lotions, or other con-
taminants, they can report inaccurate result to the system causing incorrect water chemistry,
which at worst, could harm people or equipment.
• ChecktheOmniLogic’sdisplayeachdaybeforeenteringthewater.Ifthereisanalarm,follow
the troubleshooting guide to understand and rectify the condition. If the display is blank, or
reporting a communications error, troubleshoot the equipment and rectify the failure before
entering the water.
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
16

Hayward Sense and Dispense Specifications

General

Brand	Hayward
Model	Sense and Dispense
Category	Measuring Instruments
Language	English