K114 Issue No. 9
5 - 4
Testing and Fault Finding
5.3 Self-Test Errors
At power-up, the ADTS 405 indicates if there is a fault by displaying an error code for
example:
701:HHHH PS SELF-TEST ERROR
The HHHH is a hexadecimal code containing additional information record the whole
error code.
Paragraph 5.8 contains a table listing the error codes, check that the error code is
complete and listed in the table before returning the unit to the repair depot.
5.4 Venting after Overpressure
To calibrate or test the ADTS 405, an external pressure source is connected to the Ps
and/or Pt output connectors. If, during calibration or test procedures, an overpressure
occurs, the output valves close to protect the system. After the valves close pressure
may be trapped in the internal system; the display may show on the next power-up
error 701:0100 or 702:0100. The following procedure to vent this pressure enters the
maintenance mode. Review and become familiar with the whole procedure before
beginning the venting process:
1. Remove the source of pressure and vent Ps and Pt to atmosphere (caps off).
CAUTION:ONLY SELECT ITEMS DETAILED IN THE FOLLOWING MENUS, INCORRECT SELECTIONS CAN CAUSE
CHANGES
TO SAFETY LIMITS AND THE CALIBRATION DATA OF THE SYSTEM.
2. Re-power the ADTS 405. During the power-up screen:
DRUCK
ADTS 405
DK XXX
VER XXX
3. Press F1 and F4 simultaneously. The ADTS 405 enters the maintenance mode
with the following screen displays.
Note: The system may prompt for a PIN. This is not the CONFIG PIN but the Calibration
PIN. If this Calibration PIN is enabled and not entered, the system will not execute
the following procedure.
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