Guides for Summa 21 from Olivetti
Part of the instruction manual for the Olivetti Summa 21 in English:
Before plugging in the AC cord and switching on the calculator, check that the rated voltage indicated on the rating label on the bottom corresponds to the local voltage. The calculator must not be covered when turned on, as this will cause it to overheat. Do not use organic solutions such as alcohol to clean the casing. Do not use or leave the calculator in direct sun light. Locations subject to quick temperature changes, high humidity and dirt should also be avoided. The electrical power socket-outlet shall be near the equipment and shall be easily accessible...
Manufacturer: Olivetti
Model: Summa 21
Size of the instruction manual: 952.32 kB
Category: Miscellaneous
Model: Summa 21
Size of the instruction manual: 952.32 kB
Category: Miscellaneous
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