Note: If you programmed your ATT310 previously for the updated DST change dates, you should not have to program the DST change dates again for 2018. The unit remembers the start date as the second Sunday in March and the end date as the first Sunday in November. Once set, the clock automatically updates the settings every year thereafter. No further manual setting is necessary unless the law regarding the start and end dates of DST changes again.
Use the instructions below if you did not set up your clock for automatic DST change dates or for whatever reason need to change your DST programming for 2018.
To program the machine, remove the case to access the five tactile switches, SW5 to SW1, located below the LCD display. Note that pressing and holding these switches will cause the setting options to advance faster.
Important: if you do not press the [SW1:SET] key a second time, the clock will not print.
For more information, refer to your User Manual. [ download PDF version ]
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