Concoa Medical IntelliSwitch 570 Series, Installation And Operating Instructions Manual, Page: 14 / 52

12
OPERATING THE MEDICAL
INTELLISWITCH™
Figure 2 identifies and locates the various front panel and external system features.
Selecting a Gas Source
The Source Select buttons on the front panel provide flexibility in the choices of liquid or high
pressure cylinders used in an application. Further, they provide choices of liquid cylinders with
different pressure ratings. There are two Source Select buttons, allowing each side to be controlled
independently. Green indicator lights directly above the Source Select buttons identify which
cylinder choice is currently selected for the side. Each time a Source Select Button is pressed, the
indicator lights above the button will shift to the next choice.
Cylinder Sizes
There are three liquid cylinder pressure ratings that can be selected. For each cylinder pressure, the
Medical IntelliSwitch™ has a preset value it uses to determine when the cylinder has reached an
overpressure condition in order to activate the economizer feature. Table 1 provides the cylinder
pressure choices and their respective economizer pressures.
Table 1
Cylinder Relief Valve
Pressure
Economizer Activation
Pressure
Normal Value to Switch
Back
230 PSI 210 PSI 190 PSI
350 PSI 325 PSI 300 PSI
500 PSI 475 PSI 450 PSI
If a liquid cylinder’s pressure rises to the “activation” pressure, the Medical IntelliSwitch™ will
redirect itself to draw the pressure down through the delivery stream. Once the pressure reaches a
“normal” value, it will return to drawing from the previous side.
Bank Selection
The Bank Select button on the front panel allows for manually switching the active bank. The In-Use
status indicator lights provide the feedback to indicate which side is selected.
Reset
The Reset button is primarily used to reset a “replace” condition when using liquid cylinders. The
Replace status light can only be cleared if the side with the condition has its pressure restored to a
value above the switchover (trip point) plus the Hysteresis value AND the Reset button is pushed. If
the button is pushed while the condition still occurs, the system will attempt to clear the condition
but will reinstate the indicators automatically. Example: Switchover (trip point) = 130 PSI. System
will switch to the other side when pressure drops to 130 PSI. It will not allow switching back until
the pressure reaches 140 PSI (130 PSI + 10 PSI Hysteresis pressure)