A18.0 Glossary Of Terms - Jacuzzi Premium J-325 Troubleshooting Manual

A18.0 Glossary Of Terms

Circuit Board: Printed circuit board assembly that distributes voltage to selected components.
Control Panel: Component that allows user to access functions provided by the circuit board.
Ammeter: Device which measures electrical current conducted through a wire or electrical
device.
Eprom: Chip on the circuit board that stores hot tub software.
Flow Switch: Switch that informs circuit board there is suffi cient water movement to activate
heater. This switch identifi es water fl ow.
Hi-Limit Sensor: Sensor that monitors water temperature inside heater.
Jumper: Device on circuit board that mechanically connects (bridges) two points together.
Ohmmeter: Device that measures the resistance in ohms (Ω) of a component or temperature
sensitive device (e.g. temperature sensor, heater element, etc.).
Ozonator: A device that produces ozone gas by passing air by a UV light source or through
Corona Discharge (high voltage arc) methods.
ProClear: A 24-hour ozone fi ltration system added to a hot tub's circulation pump line which
introduces Ozone while circulating the water.
Pin Assignments: Locations identifi ed by numbers on circuit board.
Sensor Harness: Plug in connector containing the temperature sensor, hi-limit sensor, fl ow switch
and interlock jumper device connections.
Summer Logic: Deactivates circulation pump and ozone when hot tub water reaches 2ºF (1ºC)
above the set temperature. Hot tub water must be 95ºF (35ºC) or higher for sum-
mer logic to activate.
Temp. Sensor: Sensor that monitors hot tub water temperature.
Transformer: Device that converts primary high voltage AC signal to a secondary low voltage AC
signal.
Voltage Meter: Device that measures AC or DC voltage potentials across components or from a
specifi c test point to ground.
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