Troubleshooting
multi EA 5000
114
Error
Possible cause
Remedy
Heating faulty
Temperature control
faulty
Inform customer service
department
Auto-injector not de-
tected
Auto-injector and au-
tosampler switched on at
the same time
Switch off the autosam-
pler
13.6 Analytical problems in the basic module
Error
Possible cause
Remedy
Burns at the cannula
Argon and oxygen con-
nections on the combus-
tion tube mixed up
Connect the process
gases to the combustion
tube properly
Unsuitable settings in the
method: Argon gas flow
too low in the inlet (in
particular for methods
with gas autosamplers)
Adjust the method pa-
rameters to the analytical
requirements
Low results independent
of detection
Dosing fault
Check dosing by auto-in-
jector or autosampler
System leaking
Check system tightness
Temperature set too low
Check temperature con-
figuration in the method
Wrong or unsuitable cali-
bration
Check calibration, recali-
brate as necessary
Sample loss due to vapor-
ization or spillage
Keep liquid samples
closed. If possible, used a
cooled sampler.
Check sampler function
for solids
Post-combustion period
insufficient
Particularly for solids, a
post-combustion period
of at least 120 s must be
set.
Sooting in the system
Clean or replace sooty
components
Carryover
Inadequate sampler com-
ponent rinsing
Rinse dosing syringes ad-
equately prior to sam-
pling
Combustion tube not
rinsed adequately
Rinse combustion tube
adequately with clean
solvent, i.e. blank mea-
surements until values
are constant
Contamination of the in-
jector head or the sample
sluice
Replace septum
Clean sluice
