Metrohm 7010 TOC, User Manual

Page: 77 / 81

77
PROBLEM PROBABLE CAUSE CHECK TO DO CORRECTIVE ACTION
Check sample presence
in the fast­loop reservoir
Check carrier gas flow value
in cc/min
Repeat calibration / validation.
Repeat zero calibration and check
the ppm CO2 value
check reagent tanks level
check reagent days counter
loss of sample
low flow / reactor carrier gas
span calibration/
validation failed
zero gas calibration failed
loss of reagents
restore sample flow
check carrier gas line coming from air
compressor
(09)
until UV reactor outlet
tubing looking for blockages and/or
eventual failures
check for pump delivery of standard
solution and persulfate; prepare a fresh
standard solution and make a double
check on its correct value; verify that
the infrared analyser is properly
working
replace sodalime in sodalime filter,
check the gas line is free from
obstructions from condenser to NDIR.
verify that the infrared analyser is
properly working
Check reagents level in their containers
Reset reagent counter
FAULT ALARM