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5 Maintenance
Note:
Details of how to use the test set can be found in the accompa-
nying operating instructions.
The procedure for testing with a gas mixture and individual gas
is the same.
The device inspection has been opened.
1. On the
Dev. Test …
menu, select the menu item to be tested
(e.g.
Gas mixture
,
Test gas C3H8
, etc.).
2.
Check whether the test gas concentration specified by the
device matches the test gas you intend to use. To do this
press
Information
.
Note:
When testing the indication accuracy for
Inspection above
ground
using
test gas 10 ppm in 10 seconds
it is not possible
to check the test gas concentration. Instead, a message will ap-
pear explaining what steps need to be carried out.
3. Add the test gas
4. Wait until the displayed readings are stable. A
Status: OK
message will appear.
5. Press
OK
to confirm.
6. Stop the test gas supply.
The device switches back to the
Dev. test…
menu. A
Test
gas … OK
message will appear.
7. Repeat for further test gases if applicable.
Once all tests have been successfully completed, the complete
test of the indication accuracy with supply of test gas is also
complete.
