8
START UP(continued)
3
Fill one cup of water, one cup of
pH buffer #4 (Fig. 3) and one cup
of pH buffer #7 (Fig. 4)
Fig. 1 Access the water res-
ervoir; the sensor will be on
the left side
water
#4
#7
6
Enter the pH calibration
screen by pressing SETUP (
A
),
SET RESERVOIR (
B
), PH
SENSOR(
C
), then CALIBRATE
(
D
) and follow the instructions
on the screen.
Calibration will take about three
minutes to complete.
Continued on next page
CALIBRATE THE pH SENSOR
1
Remove the bottom growing drawer(s) to access the reservoir (Fig.1)
2
Locate the pH sensor probe on the left side of the reservoir (Fig.2)
Fig. 2 Blue PH sensor
(shown with cap on)
Fig. 3
PH buffer #4
Fig. 4
PH buffer #7
4
Remove the cap from the
sensor and gently wash the pH
probe in the water and dry with
a clean cloth.
water
5
Gently swish
the probe in the
cup containing
pH buffer #4.
Continue to swish
the probe and
follow instructions
in step 6.
#4
7
Wash the pH
sensor in the cup
of water and dry
with a clean cloth.
Repeat steps 5
and 6 for pH buff-
er #7 solution
IMPORTANT:
Safely store the pH sensor cap and use it to stop the
sensor from drying out when the water reservoir is empty. Do not let
the pH sensor dry out. Fill cap with pH #4 calibration solution before
placing it on probe to store the sensor. Failure to follow this procedure
will ruin the sensor and void the warranty.
#7
8
Press DONE when calibra-
tion is complete
A
B
C
D
E
In order to function properly, the pH sensor needs to be calibrated.
Supplies needed: #4 pH buffer solution (yellow), #7 pH buffer solution
(blue), clean water, 3 cups or containers, clean cloth.
