Endress+Hauser Analytik Jena multi EA 5100, Operating Manual

Page: 122 / 182

Troubleshooting multi EA 5100
122
Error Possible cause Remedy
¡ Inlet gas flow set too
low in the method
(EC/OC methods
only) ¡ Adjust method pa-
rameters
Results too high ¡ Inlet gas flow set too
low in the method
(EC/OC methods
only) ¡ Adjust method pa-
rameters
No analysis signal
¡
NDIR detector faulty
¡
Inform customer ser-
vice department
TC, TOC, NPOC and TIC determination in water analysis:
Error Possible cause Remedy
Scattering measure-
ments
¡
Filling of combustion
tube depleted
¡
Replace catalyst, see (→
"Replacing the catalyst in
the TOC combustion
tube"
 165)
¡ Dosing faulty ¡ Check dosing
¡ For manual dosing:
Check syringe volume
¡ Cannula damaged or
clogged ¡ Replace cannula or re-
move clogging with a
cleaning stylet
¡
Filter samples contain-
ing particles before
analysis
¡
Inhomogeneous sam-
ples
¡
Inhomogeneous water
samples with a high or-
ganic content, for exam-
ple oils, must be homog-
enized and may only be
analyzed in horizontal
operation mode (with
ABD)
¡ Faulty, leaky septum ¡ Check septum, replace
as necessary
¡
Only use cannula with ID
0.35 mm for
250/500 µl special sy-
ringes
¡
Sample contamination
with ambient air con-
tents
¡
Check ambient condi-
tions and remedy the
source of the fault
¡
NDIR baseline drift
¡ Unsuitable integration
criteria: Integration can-
celed too early or exces-
sive duration (baseline
noise integrated)
¡
Check the gas supply
and gas quality
¡ Adjust the maximum in-
tegration time or the
start and stop criteria