4. History
4.1. Shutdown list
If irregularities occur in connection with the running of the compressor, Unisab III can be in-
spected to determine the cause of these irregularities. In case of shutdown Unisab III stores
the operating situation, including time and date. This information can then be inspected on
the display which is particularly useful when searching the cause of a compressor shutdown.
Unisab III can store 30 shutdown situations where the most recent one replaces the oldest. In
case of power failure Unisab III does not lose any information, it can be displayed again once
the supply voltage has been restored.
4.1.1 Shutdown
When selecting the History menu, the following picture appears:
Place the cursor on Shutdown and press twice to see the most recent shutdown.
Example:
The picture shows that on 8 August 2007 at 13:24 hrs a shutdown was activated due to Low
suction pressure. To inspect all previous (up to 30) shutdowns, press
and the most recent
previous shutdown will appear. Continue until reaching the desired shutdown. Now all operat-
ing information existing at the moment of the shutdown can be seen. In the shutdown situa-
tion Low suction pressure, the compressor has been in Remote mode and was in pause. Fur-
thermore, it has been programmed to Start no. 1 and Multisab state was 0 Blocked. To in-
spect the operating situation, use
F3
/VALUE to get to the next picture:
History
Engineering manual - Unisab III 1.10
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