Concoa INTELLISWITCH, Инструкция по установке и эксплуатации

Страница: 8 / 24

8 9
OPERATING THE 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 above the two 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 as
long as the option is viable given the switchover pressure setting.
Cylinder Sizes
There are three liquid cylinder pressure ratings that can be selected. For each cylinder pressure, the
IntelliSwitch has a preset value it uses to determine when the cylinder has reached an overpressure condition.
Table 1 provides the cylinder pressure choices.
Table 1 — Cylinder Relief Valve Pressure
Cylinder Relief Valve Pressure
230
350
500
If a liquid cylinder’s pressure rises to the “activation” value, the 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. Status indicator
lights provide the feedback to indicate which side is selected.
Reset
The Reset button is primarily used to reset “alarm” or “replace” conditions. The Replace status light can
only be cleared if the side with the condition has its pressure restored to a value above the 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 alarm but will reinstate the indicators automatically.
Testing
Holding the Reset button in for 5 seconds will place the system in test mode. This diagnostic and
troubleshooting tool performs 13 different tests. Each time the Reset button is pushed again, the system will
perform a different test. If after the test mode has been entered and there is no pushbutton activity for one
minute, the system will return to the normal display operation. Gas flow is maintained during the test mode.
Refer to the Troubleshooting Section for details on testing
Keypad Lockout
See Section “User Selectable Features” for explanation on enabling/disabling and using this feature.