11The optional Nordissage Seat jets are the four (4) jets located by the second bank ofhydrotherapy jets. These strategically placed jets serve to relieve aches and pains fromyour shoulders and upper back muscles with concentrated therapy.NOTE: For optimum performance when using all four (4) banks of hydrotherapyjets, make sure the Top Turbo jet is off and the Bottom Turbo jet is positioned sothat the Bottom Turbo and Nordissage Seat jets (if installed) are turned off.HYDROTHERAPY JETSThe Hydrotherapy jets are recessed and located in the wall above the seats. Rotate the jetface counter-clockwise to turn the jets on, clockwise to turn the jets off.AIR CONTROL VALVESFrom inside the Hot Tub, locate the three (3) round, air control valves next to the top-sidecontrols. The left air control operates the bottom whirlpool jet. The center air controloperates the hydrotherapy jets. The right air control operates the top whirlpool jet. Thesecontrol valves serve to regulate the amount of air mixed with the water when the jets areoperational. Rotate the air controls counter-clockwise to achieve the maximum jetpressure and therapeutic action. Rotating the air controls clockwise turns the air off andallows the jets to work with water only. Turn the air controls off when the Hot Tub is notin use. This will prevent cold air from entering the Hot Tub and will keep heating coststo a minimum.HEATER COOL-DOWNWhen the Hot Tub has reached the selected temperature, the heater is turned off. Aninternal timer keeps the low-speed pump running for some period of time to cool downthe heater. This extends the heating elements life and helps prevent the accumulation ofcalcium and chlorine deposits around it.FREEZE PROTECTIONIf the system detects there is a problem with the heater element, the system willautomatically activate the low-speed pump when the actual water temperature falls below40 F. This feature keeps the Hot Tub from freezing by circulating the water.Contact your dealer or service organization if this condition should exist.STARTUP INSTRUCTIONS