USER MANAUL
MGA
prime Q
MRU GmbH, D-74172 Neckarsulm
103 /
117
18
Appendix
18.1.
Error diagnosis regarding the measuring instrument
Fault indication
Possible causes
Repair
Gas cooler is faulty!
The system will shut
down.
Gas cooler faulty.
Contact MRU service depart-
ment.
Undervoltage!!!
The System will shut
down
Battery is discharged.
Connect instrument to power
grid.
Power consumption
too high
Please check heated
hose!
Please check heated
sample line.
Heated sample line may be dam-
aged. Disconnect the instrument
from power grid and visually in-
spect the sample line. Take care
to unroll the heated sample line
before operating it.
Please wait
–
pump is
off
Warm up has not
been completed yet.
Measurement not
started as instrument
is in warm-up phase.
Wait until warm up phase has
terminated.
Flow monitoring!
Flow rate too low!
Please check filter.
The sample gas flow
has fallen below the
required limit.
Filter or sample line
may be clogged.
Gas pump may be
faulty
Flow sensor may be
defect.
Check sample line and all filters
on dust or water. Replace filters.
Gas cooler is drying
out.
Typically occurs when
dry test gas or dry am-
bient air is measured
over a longer period
of time (several
minutes) instead of
flue gas.
Can only occur during
operation without acid
injection.
Use a test gas humidifier.
Use acid injection.
