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17
CONNECTING TO A SERIAL PORT
The IntelliSwitch is equipped with a serial port. This port is typically configured as an RS-232 Port but can
be factory configured as an RS-485 Port.
The Serial Port is used to communicate with external serial devices, primarily a PC. There are a number of
commands as well as data that can be communicated between the IntelliSwitch and the peripheral device.
Contact your CONCOA representative for more information.
TROUBLESHOOTING
Symptom
Possible Cause
Possible Solution
No display or status lights ON.
· No power to the system.
· Check that the power source is live.
· Check the system fuse.
· Restore power.
· Replace fuse.
· Replace electronic control board.
System will not switch from one side
to the other automatically.
· Check that the pressure on the
destination side is greater than the
switchover pressure setting.
· Restore pressure to proper
operating level.
· Check that the switchover pressure
setting is correct for the cylinder
size and inlet pressures required.
There are pressure readings on both
inlet displays but no delivery pressure.
· Air supply is off or its pressure is
too low.
· Internal regulator for the valve
system is plugged or faulty
· Restore pressure
· Clean or replace internal regulator
There is a pressure reading on the left
inlet display and no pressure on the
right inlet display or outlet display.
· In a system using delivery process
gas activation, the right side must
be pressurized for gas delivery.
· Restore a minimum of 80 PSI
pressure to the right side.
Remote alarm does not work with the
system.
· Remote alarm is not powered.
· Wiring between the IntelliSwitch
and the alarm is incorrect.
· Check the remote alarm LED on
IntelliSwitch front panel.
· Check alarm is powered and on.
· Check wiring between alarm and
IntelliSwitch
Outlet pressure from the system drops
below the adjusted value.
· Flow demands on the system are
greater than the cylinders can
supply.
· Cylinder pressures are too low.
· Switchover pressure set too low for
the application.
· Replace or resize cylinders.
· Change switchover pressure on
IntelliSwitch.
Gas from one side appears to be
flowing to the other.
· Dirty or bad check valve.
· Replace check valve.
Gas escaping from side of regulator
block.
· Failed burst disk.
· Replace burst disk.
Inlet display shows "Err2"
· Inlet pressure greater than
maximum inlet operating pressure.
· Reduce pressure to the inlet to
maximum allowable.
Outlet display shows "Err2"
· Outlet regulator failure.
· Replace outlet regulator.
Any display shows "Err3"
· Switchover pressure value is greater
than the cylinder size selected.
· Change cylinder size by pressing
the "Source Select" button
· Change switchover pressure value.
Summary of Contents for INTELLISWITCH
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