24
Us
e
Us
e
Calibr
ation
Calibr
ation
M
alfunc
tion and
M
ain
tenanc
e
M
alfunc
tion and
M
ain
tenanc
e
Comm-
issioning
Comm-
issioning
In
tr
oduc
tion
In
tr
oduc
tion
G
ener
al
Inf
or
ma
tion
G
ener
al
Inf
or
ma
tion
FA
Q
FA
Q
Technical
Da
ta
Technical
Da
ta
W
ar
ran
ty
W
ar
ran
ty
Cust
omer
ser
vic
e
Cust
omer ser
vic
e
Con
tac
t
Con
tac
t
Key
w
or
d
Inde
x
Key
w
or
d
Inde
x
Ac
cessor
ies
Ac
cessor
ies
D01-915en201911 Manual eCHEM Chlorine Dioxide
Malfunction and Maintenance
//
Chlorine Dioxide
Signal test
After zero point test:
1. Add some disinfectant containing chlorine to the beaker filled with clean tap water from the
"zero point test"
2. Stir as evenly as possible for at least 5 minutes with the sensor connected to the measuring
instrument
3. During this time, you should notice an increase in the measuring signal
-> If the sensor signal increases, the sensor is likely to be OK. If the sensor does not react to the
chlorine-containing disinfectant, the sensor must be serviced in accordance with chapter 6.2 of
the operating instructions and the "Signal test" repeated.
-> If the sensor still shows no reaction to the chlorine-containing disinfectant after that, it must be
sent in for maintenance.
Environment test
1. Check flow
2. Check measuring cable
3. Check measuring/control unit
4. Check correct calibration
5. Check dosing device
6. Check concentration of disinfectant in the dosing tank
7. Check suitability of the sensor for measuring the dosed disinfectant
8. Check concentration of disinfectant in measuring medium (analytics)
9. Check pH value of the measuring medium
10. Check temperature of the measuring medium
11. Check pressure in the flow cell
12. Check analytics
