Centurion Spas CT 10000 Owner's Manual page 23

Water Chemistry
Once your spa reaches 90ºF or higher, add the start-up AquaClara
Natural spa care system (if equipped, see page 22) to the water.
Turn Pump 1 on high speed immediately after you add AquaClara
Natural to the water to evenly distribute AquaClara through your
system.
Standby Mode
The Standby mode is an energy saving feature that
"pauses" the current pump settings. For example, if you
need to leave your spa for a while and want to save the
current settings, press the Standby button. Pressing the Standby
button again, or when a filter cycle start time is reached, returns
the spa to normal operation.
While in Standby, the STBY message appears on the display and
the progress bar (dashes below the time) shows the time
remaining before the system automatically exits. The spa light
momentarily flashes when exiting Standby.
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