Manual CWD 2005
Troubleshooting
___________________________________________________________________
Manual CWD2005.doc
81
8.4.
Incomplete ignition
Warning: Ignition only operates with the door closed.
1.
Incorrect temperature setting:
The temperature threshold should be reduced.
The unit tries to ignite while the flame is burning and the device does not switch to
normal operating mode.
2.
Incorrect temperature setting:
The temperature threshold should be increased.
The device switches to operating mode, although the flame is not burning, and then
switches back to ignition mode.
3.
Ignition electrode corroded:
Normal wear following heavy use. The ignition
electrode should be replaced if necessary.
4.
Gas problems:
With poor, barely flammable gases, a special burner needs to be
installed that will provide a stable flame pattern.
5.
No ignition spark:
Door is open during ignition cycle. The electrode is corroded or
bent, or is short-circuiting because of fouling or carbon tracking down the body of the
insulator. Check the cooling airflow on the air pressure gauge, as a lack of flow will
trip the safety pressure switch. Check the ignition transformer primary and secondary
for continuity.
8.5.
Software troubleshooting
The CWD 2005 has an onboard ETX Board and several printed circuit boards, which
can only be operated with its own unique software configuration data file. A
configuration file is provided with each instrument and it is stored on a memory stick
for safety. If the memory stick is misplaced or the configuration is corrupted due to an
incident, the device cannot be reconfigured without this memory stick. The service
memory stick contains several programs that will restore the original configuration,
reboot the system, execute and backup data and also configure the EA-external
board and the EA-internal board. This is also important if one of these boards is ever
replaced.
The memory stick contains six different program routines, which can be executed in
the CWD 2005 drive and are explained in the following text. The memory stick must
be removed after the completion of the selected program and the unit has to be
rebooted.
Only programs 1 and 6 are of user interest if the unit works correctly. Programs 2 to 5
contain board specific calibration data for the normal operation and after delivery are
of no interest. If the boards are replaced or software updates are required, a memory
stick with configuration data for the new board is supplied with the boards.
After inserting the memory stick in tne USB port and rebooting the CWD 2005 the
following information will appear on the screen. The arrows on the lower part of the
screen refer to the keys below the screen.