Hitachi ZAXIS 450LC-3 Operator's Manual page 89

Resetting Data
If data is reset, push key 5
settings screen.
The message "Reset Data. OK?" displays. Then, push the
determination key.
The value of remaining hours is reset to that of change
interval. Previous change date/hour is updated with current
date and time.
OPERATOR'S STATION
on the Interval ON/OFF
Interval ON/OFF Settings Screen
1-41
Key 5
T1V5-05-01-052
Determination Key
T1V5-05-01-140