DG Flugzeugbau GmbH
Flight manual DG-500M
42) Control light Gen. : red permanent light
on = Generator not charging the battery
off = Generator charging the battery
43) Digital readout selector switch CHT/battery voltage for the right hand display
CHT °C Battery V
centre T = Cylinderhead (water) temperature
CHT displayed in °C
right B = battery voltage displayed in V.
The switch returns by itself into the T position.
44) Exhaust gas temperature EGT indication (Option).
Switch No. 43 to the left: EGT in °C is displayed on the centre display for the
front cylinder and on the right hand display for the rear cylinder. E will be
displayed on the left hand display. E 550 545
If the EGT of one or of both cylinders exceeds the max. permissible value of
650° C (1202° F) all 3 displays, 45, 46 and 47, start blinking and the EGT will be
displayed, e.g. E 710 705
._________
Warning: If 650°C will be exceeded, the engine speed must be reduced so far,
that the EGT’s will return into their limits, to avoid engine damage. High EGT’s
are likely to occur in horizontal cruising flight. If the EGT’s are too high in
climb, this may indicate too lean a carburettor setting, or the start of piston
damage.
Below 200°C E --- --- will be displayed if the probes are connected and
working. Otherwise nothing will be displayed.
45) Display for the fuel level in the fuselage tank in liters.
Fuel liter :The amount displayed is the total amount in the tank less 1 l (0.26
U.S.gal.) unusable amount.
If the displayed fuel level is lower than 5 l (1.32 U.S.gal.) an L (low) is displayed
in front of the liter number as a warning.
When reaching the non usable amount of fuel LL will be displayed and the
display starts blinking.
Note: With a fuel level of less than 5 l (1.32 U.S.gal.) the fuel indication is no
longer independent on the pitch attitude of the aircraft. If you fly with low pitch
attitude less fuel than real will be displayed.
With more than 5 l (1.32 U.S.gal.) fuel the indication is nearly independent of
pitch altitude due to the second fuel level probe.
46) Display for the engine speed x 10 engine speed RPM x 10
e.g. 602 means 6020 RPM engine speed. When exceeding the max. continuous
engine speed of 6900 RPM a blinking double point will appear in front of the last
digit, e.g. 6 9:1 .
When exceeding the max. engine speed of 7200 RPM the whole display starts
blinking 7 2:1 .
After switching off the ignition (DEI still switched on) 3 dashes will be displayed
- - - .
As soon as the propeller is aligned or the ignition is switched on again, the engine
speed will be displayed.
Issued: December 1998 TN 843/11 7.11
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