FujiFilm PB-30 Operation Manual page 46

Chapter 7 How to Use the Equipment
(2) If the balloon is inflated and the pressure inside the channel
reaches +5.6 kPa, air supply is adjusted automatically to
keep the balloon inflated.
<Supplying Air into the Balloon on the Over-tube>
(1) Press the toggle switch 1 on the remote switch.
The outside light lights up and air is fed to the balloon on
the over-tube side.
(2) If the balloon is inflated and the pressure inside the channel
reaches +5.6 kPa, air supply is adjusted automatically to
keep the balloon inflated.
7.1.2 Discharging Air from the Balloon
<Discharging Air from the Balloon on the Endoscope>
(1) Press the toggle switch 2 of the remote switch.
The inside light lights up and air is discharged from the
balloon on the endoscope side.
(2) If the balloon is deflated and the pressure inside the
channel reaches -6.0 kPa, air discharge is adjusted
automatically to keep the balloon deflated.
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