Repair manual

46
Figure 16
~ Adjustment cap
5 / Repair Instructions
Measuring the CO
2
content in the exhaust gas
Danger of injury, fire and poisoning!
• The HYDRONIC must not be operated in enclosed spaces
such as garages or workshops without exhaust-gas
extraction.
• Do not switch on HYDRONIC with the burner dismantled.
Please note!
• Measurement of the CO
2
content and, if necessary,
adjustment of the combustion air, is necessary:
- after repairs to the HYDRONIC (functional test)
- where combustion is not normal
- after changing the fuel atomizer nozzle
Measurement
Measurement of the CO
2
content of the HYDRONIC is carried
out when the vehicle is running.
In order to be able to measure the CO
2
content accurately, the
HYDRONIC must have reached its operating temperature.
Measure the CO
2
content using a CO
2
indicator, observing the
manufacturer‘s data.
Adjusting the combustion air (see Figure 16)
• Unscrew the adjustment cap.
- If the CO
2
content is less than 9 vol %, then turn the
adjustment cap towards the left (CO
2
+).
- If the CO
2
content is greater than 11 vol %, then turn the
adjustment cap towards the right (CO
2
-).
• Secure the adjustment cap again.
• If it is not possible to adjust CO
2
content properly,
- check burner for damage
- check electric motor rpm
- replace fuel atomizer nozzle.
~