Filling The Wing Water Ballast Tanks - DG Flugzeugbau DG-1000 Flight Manual

Flight manual DG-1000S
4.2.2

Filling the wing water ballast tanks

First open the fin tank and then open the right wing tank valve (top handle).
Place the right wing tip on the ground. Attach the hose in the water outlet on the
lower surface of the wing. Fill with water. Close the valve.
Place the left wing tip to the ground and fill the left tank accordingly. Filling
with water ballast is only allowed with a filling system which enables you to
determine the exact amount of ballast filled in, e.g. water gauge or calibrated
canisters.
Warning: Fill the hose from your water containers but never from a main
pressure water supply. Filling the wing tanks with excessive pressure (more than
0.2 bar, 3 psi) will definitely burst the wing shell!
Caution: If the tanks are to be filled up completely you must suck the air out of
the tanks with the filling hose, as the tanks have no ventilation line.
Fill with the desired amount of water regarding the loading chart see section
6.8.5.
In case a valve leaks slightly, you may try to pull out the PVC pushrod of the
valve to stop the leak. If this cannot be done successfully refer to maintenance
manual 1.8.1. and 4.1.
It is not allowed to fly with leaking watertanks, as this may result in
asymmetrical loading condition.
After filling the tanks, check to see if the wings are balanced. If one wing is
heavier, dump enough water to balance the wings.
Finally press the Teflon-glass-fabric which shall close the dump holes against
the wing-shell. There must be always a small amount of grease on the shell, to
ensure that the covers stick to the shell.
Warning: Follow the loading chart section 6.8 must be observed. The
maximum take off weight must not be exceeded.
LBA app.
Issued: March 2002 4.4