Astralpool PC 2000 Manual De Instrucciones página 28

5___CALIBRATION
To enter the calibration menu, hold the key down for 5 seconds. The instrument will display
the message Hold Cal. After this lapse of time, the message CL CAL will appear and the Hold
LED will light up.
If the key is pressed repeatedly, the items PH, ORP, CRT will follow cyclically.
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