WARNING: Residual air may create undue pressure during flights
with partially loaded or empty tanks. Always check to
ensure that the vent holes of the fin tanks are always
open and that the pressure relieve valve in the main tank
is functional.
WARNING: Never apply more than 0.1 bar of water pressure (filling
funnel height no more than one metre above the wing)
because of possible damage to the structure.
WARNING: Ensure that both wing tanks are filled with equal
amounts of water to prevent wing dropping on take-off.
WARNING: Check for the correct dumping sequence. The tail tank
must finish dumping before the main wing tanks to
ensure safe shifting of the CG.
WARNING: The wing tips must be filled with water ballast if the main
tanks or fuselage tanks are filled (even partially filled).
WARNING: No tail ballast compensation is required for water loaded
in the 18 m tips. The CG moves approximately 6 mm
rearwards when filling the 18 m tips.
WARNING: Use of water ballast is limited to non-freezing flight
conditions. Do not use water ballast for prolonged flights
below 0 °C (32 °F).
WARNING: Do not use any lubricant (grease or petroleum jelly) or
wax to seal any water valves that do not seal properly.
Most lubricants affect the rubber seal and may result in
the seal detaching from the valve unit.
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