10
3. Fill one cup of water, and one EC
1000 PPM solution
4.
Gently
wash the TDS probe in the
water and dry on a cloth
5. Gently swish the probe in EC PPM solu-
tion and, while swishing the probe,
enter the calibration screen.
water
EC
PPM
water
EC
PPM
Fig. 1
Access the water reservoir
1.
Remove the lower grow drawer to access the reservoir (Fig.1)
2.
Locate the TDS sensor probe on the right side of the reservoir (Fig.2)
Fig. 2
TDS sensor (black)
6. To enter the TDS calibration screen press SETUP (
A
), SET RESERVOIR (
B
), TDS SENSOR(
C
), then CALIBRATE (
D
) and follow the
instructions on the screen. Continue to swish the probe in the solution for three minutes.
Calibration will take about three minutes to complete.
Press DONE (
E
) when complete.
START-UP (continued)
CALIBRATE THE TOTAL DISSOLVED SOLIDS (TDS) SENSOR (EC 1000 PPM solution required)
A
B
C
D
E
Continued on next page
