Twin Tanks Touchdown instructions for use
1) FILLING THE PEN: The plunger
works with the principle of the inverted syringe, when you press the
seal it creates a vacuum which then, at the end of the stroke, sucks the
ink. So if you want to load the pen, you have to rotate the bottom
counterclockwise until the spring releases it and pushes it upwards.
Then pull out until the plunger is fully visible. Now dip the nib into
the ink to cover the section, and holding the pen with one hand, press
the bottom with the other with a gentle but progressive movement, taking
care to do it vertically without forcing the shaft into an unnecessary
fold. Finally tighten the bottom by pressing and turning to the LOCK
position.
2) SHORT WRITING: In the short
writing position, the pen writes for a few pages in complete safety
because the plunger closes the ink duct, isolating it from the large
tank and protects the pen from ink leaks due to pressure (in an
airplane, cold and heat, lifts). The blind cap is positioned on LOCK. In
this position the small tank has enough ink for a few pages of writing,
remembering that calligraphy and nib can affect the length.
3) LONG WRITING: In the long writing
position, the plunger opens the duct that joins the small and large
tanks and allows the continuous passage of ink with an autonomy of over 6
cartridges. The blind cap is positioned on OPEN. When you finish
writing, put it back on the LOCK. This position is only recommended for long writing sessions at home and you should always remember to close it
4) FILLING the small tank: In the
Short writing position, padlock closed, if you have used the whole small
tank, turn the bottom to open and press the bottom 2 or 3 times to
facilitate the transfer of ink from large to small. Then return the
blind cap to LOCK
5) USE IN PLANE: in the short writing
position there are no particular recommendations but it is advisable to
completely fill the small tank before take-off to have a long range
once in flight and to avoid pressure changes. If you run out of the
small tank in flight, fill it as in step 4.
6) PEN READY TO USE: it is possible
to empty the small tank by turning the blind cap to the OPEN position
keeping the nib facing upwards, and letting the ink flow into the large
tank. Once the bottom is returned to LOCK, you will have an empty pen
but with the second tank full and ready for use.