USER MANUAL
OPTIMA 7
75 / 78
MRU GmbH, D-74172 Neckarsulm
No measurement
possible
Device cannot
be switched
on or does
not react after
being
switched on.
Battery dis-
charge
Connect the device
to the line power in
order to charge the
battery.
Measurement
without exact
temperature val-
ues.
Temperature indica-
tion:
- - - , - °C
Thermoele-
ment defec-
tive, 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 ex-
ceeded:
Value O
2
too high
Values CO and CO
2
to low
Connection
probe
–
device
not correct.
Leakage at
probe / tube /
condensate
separator,
pump does
not suck cor-
rectly
Effect tightness
test!
By visual control of
probes, tubes con-
densate separator,
leaking parts could
be found.
Wrong measuring
values
Gas temperature is
too hot or alternates
Probe is not
plugged in
correctly, de-
fective cable
in the probe
line, formation
of condensate
at the probe
tip.
Check probe plug
respectively probe
line regarding dam-
ages (loose connec-
tion), remove con-
densate from the
probe tip.
