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9 Appendix
9.6 Tips and Tricks
Oil pressure does not build up in time.
Extending the transformer pre-energise time (P 782) starts the pump sooner.
9.6.1 Set Pilot Burner
Setting the "Service mode" parameter (P 787) causes the Gerät operating program to run only
up to the stabilisation time. But up to 5 successive starts can be attempted without pre-purge
and without valve leakage test. After setting the pilot burner, set parameter back to 0
NOTICE
Resetting a fault with a total reset clears the internal counter for the service mode. The next
start-up, pre-purge again.
9.6.2 Post-Measurement of Safety Times
If it is required to measure the installation's safety times at a later time (e.g. as part of an in-
stallation's acceptance tests), it is not sufficient to disconnect the magnetic valves before start-
up. This is recognised by the ETAMATIC's self-testing circuit, and results in emergency shut-
down.
Disconnect the ignition position's acknowledgement function (term. 46). Start-up and wait until
the ignition position is reached. On the self-test's completion (ca. 5 sec), the magnetic valve
can be disconnected. Reconnect the ignition position acknowledgement function.
The installation starts up.
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