Brother GTX pro Instruction Manual page 182

Cleaning exhaust cap (Use clean stick T)
(1) Wipe clean the rubber seal of exhaust cap with the clean stick T.
<IMPORTANT>

Never touch the tip end of clean stick T with your hand. If any sebaceous matter is attached to the wiper, it may result in a
printer malfunction.

The clean stick T used for cleaning the wiper should be rinsed in the cleaning cup before the next use. Be sure to use the
clean stick T separately for color ink and white ink.

If ink clot floats on surface, remove it using the clean stick T. Do not use tweezers or other sharp objects. Using sharp
objects could damage the exhaust cap and deteriorate its air tightness, possibly resulting in failure to eject ink-jet droplets.
(2) Use the clean stick T to soak up the ink accumulated in the exhaust cap, and remove it.
<IMPORTANT>

If there is any ink clot in the exhaust cap, move the clean stick T in the direction as illustrated below. If the stick is moved
toward yourself, any of the exhaust suction ports may be clogged with ink clot.
Clean stick T
(3) Rinse the clean stick T in the cleaning cup to use it for cleaning of the suction cap to be performed next.
<IMPORTANT>

Be sure to use the clean stick T separately for white ink and color ink.
<TIPS>

Some cleaning solution may remain in the exhaust cap, but it will not cause any functional problem.
Precautions to keep good printing quality/use printer over the long term
Rubber seal
182
Clean stick T
Exhaust suction ports
X0323