JRC JMR-92 Series Field Service Manual page 741

Clearing the operation time of a PSU FAN
1. Click on the [ Clear ] button next of PSU FAN.
Clearing the operation time of a UPS
1. Click the calendar picker button in order to enter the date of UPS replacement.
The check box on the left of "Setup Date (UTC) " will be reset.
2. Select it again, and the operation time of a UPS will return to 0.
Chapter 4 Replacement procedure 4-520