Instruction Manual ScrubberGuard
Servicing
96
14830E/2
9.3.2
Cleaning and calibrating the pH sensor
CAUTION!
The pH sensor can be damaged though improper handling.
The pH sensor can be damaged by touching the measuring tip carelessly or by using incor-
rect cleaning agents.
▪
See Section 9.3.1 for details on how to clean this sensor.
▪
Only touch the measuring tip of the pH sensor when absolutely necessary.
▪
Do not clean the sensor with abrasive cleaning agents.
▪
Only use the recommended cleaning agents.
WORKSTEP
ADDITIONAL INFO / IMAGES
1.
1.
Press the
Menu
button.
2.
Enter the access code and confirm with
OK
.
3.
Press the button with
(S2) Name of the
pH sensor
.
4.
Select the
Recalibration
menu.
5.
Select the
C1 pH
menu.
Factory setting is
0
.
2.
Remove the pH sensor according to Section
4.3.1 and position it in the slide holder
(Figure 31).
3.
Clean the measuring tip of the sensor as fol-
lows:
1.
Immerse the measuring tip of the sensor
in cleaning solution or dab it with a
soaked cloth.
2.
Rinse off the measuring tip with distilled
water and pat dry.
Use cleaning agents according to
Section 9.3.1.3.
4.
Prepare for recalibration as follows:
1.
Open the calibration container and fill
with buffer solution by applying pressure
to the container.
Calibration solutions from various
manufacturers can be used. These can
be selected in the
Recalibration/Cali.
standard
menu. The Hamilton stan-
dards are set as default.
2.
Move the slide holder downwards as far
as necessary until the tip of the pH sensor
is fully immersed in the calibration solu-
tion.
The sensor should be positioned
in the center of the calibration vessel
and must not rest against the bottom of
the vessel.
