P
AGE
54
D
IAGNOSTIC
F
UNCTION
C
HAPTER
6
D
IAGNOSE
14
13.
X
START
FLUSH
C
HECK
Z
ERO
T
RANSMISSION
Press the START button briefly.
The
function
of
the
zero
transmission
measurement in the optical path of the
measuring-chamber is checked.
→ the first three LEDs from the left (green +
blue) light up
→ For this test, the measuring-chamber should
be filled with clean water. Fill the measuring-
chamber by pressing the FLUSH button
→ This test step is required in order to set the
zero value of the sample in preparation for
the next test
→ step 13
→ For a correct measurement, check that
switches S6, S7 and S8 are in the right
position according to required parameters
(→ page 32).
yellow blue red
D
IAGNOSE
15
14.
X
START
FLUSH
INDICATOR
C
HECK
C
OLOUR
D
ETECTION
Press the START button briefly.
The function of colour detection in the optical path
of the measuring-chamber is checked.
→ all four LEDs light up.
The LED „analysis result“
→ first left LED (green/red)
signals if detection is under (green) or above
(red) the limit
→ with the FLUSH button you fill the
measuring-chamber with soft or hard water
of known condition
→ with the INDICATOR button you dose
reagent into the filled measuring-chamber
→ If the water hardness of your water
sample is lower than the colour change
point of the limit reagent used, the left
LED flashes
green
→ water sample is evaluated as
GOOD
→ If the water hardness of your water
sample is higher than the colour change
point of the limit reagent used, the left
LED flashes
red
→ water sample is evaluated as BAD
→ the change-over point is no indication of the
water hardness since the amount of reagent
dosed is undefined
→
the position of switches S6-S9 have a
bearing on the evaluation.
red yellow blue red
green yellow blue red
NOTE
