29.05.09 VV016011E 6
Auxiliary functions
RESET button
Can be pressed at any time, and brings the unit to an
immediate stop. Ultrasound time is reset to zero. Reset of the
Ultrasound time also after installation of the cassette.
The RESET button restarts the internal processor and is thus
an escape button in a situation where, for some reason,
normal operation is no longer possible.
AUX button
Used (button held down) to adjust the volume of acoustic
signals (SOUND) and voice messages (VOICE). Also adjusts
the IOP indicator (bottle height).
VOICE button
Repeats or stops the current voice message. The scope of
information given can be defined in ParaProg.
PREOP button
Initiates the filling and rinsing function, and stops the
procedure if pressed again. Completes the procedure with a
phaco test if PREOP is started when in phaco 1, 2, 3
operating mode.
TEST button
Starts the phaco test when the unit is set to phaco 1, 2 or 3,
or activates the connected vitrectomy instrument during
button depression, if the unit is in VIT A, VIT B or VIT PN
mode.
NOTE: If not willingly activated PREOP or Phacotest also
can be interrupted by pressing pedal with the heel.
Then the display shows the message “PREOP
discontinued” or “Phaco Test discontinued”.
4 Control pedal
The control panel is used to regulate the I/A system and all
instruments. It must be connected to the pedal connection
socket (M1) on the rear of the unit. The control pedal can be
moved vertically (downwards) and
horizontally (sideways) and has four switching elements,
which, for safety reasons, can only be accessed by lifting the
foot.
The vertical plane
Fig. 1
The vertical range – from zero to the fully depressed position
– is divided into a maximum of three ranges: irrigation,
aspiration and instrument activation. These three ranges lie
between positions 0, 1, 2 and 3. If the pedal is pressed
slowly, the settings 0-3 can be felt as a slight resistance. This
resistance can be changed in ParaProg (low, medium, high).
The pedal is brought to position 4 by pressing with the heel,
and this position is always used to activate reflux.
The number of positions and the amount of travel between
them can be changed in ParaProg. This is described in detail
in the ParaProg user manual, VV016013E.
The vacuum is always off in position 0.There is no suction,
and the instruments are inactive.
The service engineer can adjust the firmness of the pedal
(resistance to movement).
The horizontal plane
In the horizontal plane, the pedal can be moved to the left
and right. The pedal can be moved horizontally from any of
the vertical positions, i.e. even when the pedal is depressed.
If duallinear operation is selected in ParaProg (see Section
10), the chosen instrument is controlled linearly by moving
the pedal to the left (i.e. the power of the instrument
changes in proportion to the deflection).
Moving the pedal to the right switches between the
multimode memories of the function just used (e.g. phaco 1-
2-3 etc.).
ParaProg (see Section 10) can be used to specify whether 2
or 3 memories should be available.
Switching elements
The two round switches (heel switches) can be operated with
the heel (the pedal does not have to be in the zero position)
to change the infusion pressure (bottle height) or air pump
pressure. Pressure is always reduced with the left heel
switch, and increased with the right heel switch.
The two switches on the pedal grip (TOP switch) are
positioned so that they can only be activated after the pedal
has been returned to the zero position (foot raised).
TOP left
Switches between the basic functions (selector) e.g. I/A,
CAPS, Phaco, etc. Each surgeon can enter his preferred
sequence in ParaProg.
In ParaProg (se Section 10) you can invert the assignments
of left and right of the horizontal movement to right and left.
4
Reflux 0
1
2
3
