Operating instructions

1. Pull th e leads off the flue gas tem-
perature sensor A.
2. Check the sensor resistance and
compare it wi th the curve.
3. Repl ace the sensor in ca ses of
severe deviation.
Checking the plate-type heat exchanger
Drain the primary and secondary s ide
of the boiler.
During removal, small amoun ts of
watermaytrickleoutandescapefrom
the removed pl ate-type heat exchan -
ger.
Repairs (cont.)
83
Troubleshooting
5692 619 GB