Lamtec LT3-F User Manual

63
8 Correcting Faults
Help:
- The cold start might have been interrupted therefore the probe is not yet
ready for operation.
- Remove the probe and check with ambient air and test gas.
Compare the values with the test report. Exchange the probe if required.
- The probe is blown "cold": unfavourable installation site.
/6 CO voltage smaller than O
2
voltage
Offset-adjusted CO probe voltage more than 10 mV smaller than offset-
adjusted O
2
probe voltage; tolerance time of 28 seconds.
Help:
- Exchange the probe.
- Check the wiring of the sensors, maybe O
2
and CO are inverted
/7 O
2
value over 25%
The O
2
value rises to over 25% after the deactivation of the burner;
tolerance time of 15 seconds.
Help:
- Wait to see whether the value stabilises at 21%.
- If not, remove the probe and perform an offset calibration in the air.
- Installation site possibly unfavourable; the probe is possibly blown "cold."
/8 Dynamism only at O
2
electrode
The O
2
electrode demonstrate dynamism without the CO electrode show-
ing dynamism; tolerance time of 30 seconds.
Help:
- Monitoring active only in case of values < 16 vol. % O
2
- The probe no longer reacts to changes.
- Remove the probe and check for soiling of the grille.
- Check the O
2
value in the ambient air and/or with test gas.
- If the O
2
value is <16% in the ambient air, perform an
offset calibration.
- In case of no changes, exchange the probe.
/9 Missing CO dynamism or U-CO
e
U-O
2
over 200 mV longer than 15 seconds without CO dynamism or UCO
e

 20 mV
Help:
- Monitoring active only in case of values < 16 vol. % O
2
- The probe no longer reacts to changes.
- Remove the probe and check for soiling of the grille.
- Check with ambient air and test gas if pertinent.
- In case of no changes, exchange the probe.
/10 O
2
voltage limit value
O
2
voltage U- O
2
> 100 mV for more than 60 seconds.
/11 CO voltage limit value
CO voltage U- CO > 200 mV for more than 120 seconds.
/14 UCO
e
monitoring
CO
e
voltage U-CO
e
> 300 mV, tolerance time of 27 seconds, up to 117
seconds in case of dropping voltage.
Help:
- Activate maintenance mode in case of a test gas connection.
/15 The O
2
voltage does not demonstrate the required dynamism.
Change in the O
2
voltage U-O
2
less than 2.5% within 24 hours whilst the
O
2
or CO controller is running.

Lamtec LT3-F Specifications

General

Brand	Lamtec
Model	LT3-F
Category	Transmitter
Language	English