7 • Description of the graphical interface of the APC 300
2
System test
Before the unit is switched on, the APC 300 should be installed as described
in CHAPTER 4 à.
Switch on the APC 300 about 5 minutes before starting an application. The
unit requires this time to reach its thermal equilibrium and to conduct self
checks and functional tests.
The information line of the system test display
shows any errors encountered during the test.
Version number of the software
Self check
Functional test
WARNING!
After being switched on, the unit conducts a self check in which the pressure
sensors are tested. If an error is identified, the message Self check error appears
on the standard display. The unit of flow [l/min] is not shown. Despite the
error the COAG flow and CUT flow can still be set and the unit utilized.
If a self check error occurs the APC 300 should only be used in an emergency
when no reserve unit is available, as an argon overdose could occur. This is,
however, less of a threat than the non-availability of the APC 300 in an
emergency.
The unit conducts a functional test in which the keys on the front panel, the
foot and the finger switches are checked. In addition, the APC 300 identifies
whether a supply of argon gas is available. The supply level in the gas cylinders
is also identified. Errors are displayed in plain language and signalled by an
audible alarm.
Standard display
Control of argon supply.The fill level shows
the approximate contents of the argon
cylinders.
The arrow points to the active cylinder.
Number of the active
program
Actuation displayInstrument number of
the identified instrument
Function of ENTER key
in display / menu
Information line:
Warnings and error messages
Display of
COAG flow / CUT flow
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