triOS eCHEM 90S220000, Operating Instructions Manual

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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
Fault Possible cause Action
Unstable measuring signal Membrane cracked Replace membrane cap (see chapter
6.2.2)
Air bubbles in the electrolyte (especially
during operation under pressure) Empty the membrane cap and fill
with new electrolyte bubble free (see
chapter 6.2.1)
Gas bubbles on the outside of the
membrane Briefly increase the flow rate, check and
change the installation if necessary
Pressure fluctuations in the measuring
medium Check installation type and change if
necessary
Missing galvanic isolation Establish galvanic isolation.
Send in sensor to the supplier to be
checked / overhauled.
Reference electrode exhausted and/
or contaminated (shimmers silvery or
white). Send in sensor for maintenance
Overdrive (orange LED flashing
regularly) Too high concentration of disinfectant
in the sample water Check system
Rectify fault
Calibrate sensor (see chapter 5)
Service sensor (see chapter 6.2)
The run-in time is too short. Wait until the run-in time has passed
(see chapter 7)
The membrane is damaged. Replace membrane cap (see chapter
6.2.2)
Too high inflow Check system and reduce flow rate
Missing galvanic isolation Establish galvanic isolation and, if
necessary, send in sensor to the supplier
to be checked / overhauled
The sensor is defective. Send in sensor to the supplier to be
checked / overhauled.
Underdrive The run-in time is too short. Wait until the run-in time has passed
(see chapter 7)
The working electrode is contaminated. Service the sensor (see chapter 6.2)
Missing galvanic isolation Establish galvanic isolation and, if
necessary, send in sensor to the supplier
to be checked / overhauled
The sensor is defective. Send in sensor to be checked / over-
hauled