Use and Care Manual / Installation Instructions

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

PPM

water

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)

Continued on next page