USER MANUAL OPTIMA BIOGAS
MRU GmbH, D-74172 Neckarsulm
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14.3.
Troubleshooting
Troubleshooting on the analyser
Effect
Error
indication
Cause
Solution
Analyser does
not respond to
any key touch
Device does not react on any
key.
Press ESC and
Power-ON buttons
at the simultane-
ously.
Undercooling
inside the ana-
lyser, the ana-
lyser is not usa-
ble.
Display indica-
tion:
“Device too
cold” or
audible sound
every 5 sec. .
e.g. analyser was stored in a
cold place during winter.
Put the device to a
warm room and
wait
.
Measured val-
ues are not cor-
rect
Error when tak-
ing zero point
Sensors are already exposed
to gas when taking the zero
point.
Vent the analyser
with fresh air and
restart.
Analyser does
not switch on
or does not re-
act after
switching on.
Battery discharged.
Connect the
analyser to the line
power in order to
charge the battery.
Measurement
without exact
temperature
values.
Temperature
indication:
- - - , -
Thermoelement defective,
balancing network inter-
rupted or not connected.
Call our after-sales
service.
Remove probe
from the gas duct
and condensate
from the probe
tube. .
Wrong
measuring
values
Measuring range
exceeded:
Value O
2
too
high
Values CO and
CO
2
to low .
Connection probe – device
not correct. Leakage at probe
/ tube / condensate separa-
tor, pump does not suck cor-
rectly
Perform leak proof
test.
By visual control of
probes, tubes
condensate separa-
tor, leaking parts
could be found.
Wrong
measuring
values
Gas temperature
is too hot or al-
ternates
Probe is not plugged in cor-
rectly, defective cable in the
probe line, formation of con-
densate at the probe tip.
Check probe plug
respectively probe
line regarding dam-
ages (loose connec-
tion), remove con-
densate from the
probe tip.