21
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
Chlorine Dioxide
//
Malfunction and Maintenance
Fault
Possible cause
Action
No signal
The measuring line is interrupted.
Replace the measuring line.
The sensor is not supplied with power.
Establish correct power supply.
The sensor is defective.
Send in sensor to the supplier to be
checked / overhauled.
Only applies to sensors with digital internal signal processing:
Fault
Possible cause
Action
Green LED
Flickering or no light
Too low voltage -> faulty processor
function
Establish correct power supply
Sensor defective
Send in sensor for maintenance
Orange LED
Continuous light
Incorrect polarity of the sensor signal
-> displayed output signal must be
multiplied by -1
Service the sensor according to chapter
6.2 or send in the sensor for mainte-
nance
Underdrive
See chapter 6.3.1, section Underdrive
Regular flashing
Sensor is overloaded -> chlorine dioxide
concentration too high
Check system, rectify faults, calibrate or
service sensor if necessary
