FujiFilm PB-30 Operation Manual page 47

<Discharging Air from the Balloon on the Over-tube>
(1) Press the toggle switch 1 of the remote switch.
The inside light lights up and air is discharged from the
balloon on the over-tube 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.
7.1.3 Maintaining the Balloon Status at a Specified Pressure
When the pressure inside the channel reaches 5.6 kPa or -6.0 kPa, this product automatically
adjusts air supply or discharge to keep the balloon status. To maintain the balloon status (state
of inflation or deflation) at a specified pressure, follow the procedure below.
<Maintaining the Balloon Status of the Endoscope>
(1) During air supply or discharge, press the pause switch of
the remote switch.
The lamp of the switch lights up during pausing.
(2) To cancel maintaining the balloon status, press the stop
switch once again.
Air supply or discharge resumes.
[Note]
To switch from pausing during air supply to air discharge,
or from pausing during air discharge to air supply, press
the toggle switch without releasing the paused state.
Chapter 7 How to Use the Equipment
47