Maintenance Manual DG-808C
Issued: May 2012
TN800/41
1.29
1.14.18
DEI NT= (Digital Engine Indicator)
For a description of the readouts and the various functions and the set up
menu see flight manual sect. 7.4. The DEI-NT controls all functions
together with the control unit see section 1.14.3.
- The RPM measurement is fully digital and counts the impulses of the
proximity switch.
- The coolant temperature (CHT) is measured by a temperature probe
which is screwed into the coolant circuit in the rear cylinderhead.
- Fuel level measurement see sect. 1.13.6.
Functions
The following functions are controlled by the DEI-NT:
a) by the ignition switch
- the ignition (shorting of the magneto coils)
- with the ignition switched off the engine automatic retraction and the
control of the propeller position and propellerbrake will be activated.
- with the ignition switched on the electric fuel pump, coolant pump, the
automatic extension of the engine and the control of the starter motor
will be activated.
b) the RPM indicator controls a relay which prevents the starter motor
working whilst the engine is running.
c) the limit switch see sect. 1.12.5 at the engine mount activates the
control of the starter motor only when the engine is extended
d) the proximity switch see 1.14.15 prevents the automatic retraction of
the engine as long as the propeller is not in the correct position for
retraction (with the manual extension-retraction switch see sect. 1.14.10
not operated).
Note:
If a new DEI-NT or a replacement DEI-NT should be installed, you have
to report your actual elapsed engine time to DG Flugzeugbau to enable them to
ajust the new DEI-NT to that value.
Warning: W
ith the connector plug disconnected from the DEI-NT, the ignition
is not short-circuit. This means the ignition is on. Don't turn the propeller!
Caution
: When you plug in the connector plugs, carefully fix the plugs with
their screws. Secure the screws with Loctite 221 or 222 (low strength thread
securing).
Summary of Contents for DG-800A
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