PerkinElmer Photovac 2020 Manual page 139

Do not insert any object, other than the UV lamp, into the lampholder.
WARNING
Cause: There is an undetermined problem.
Problem: Date and time settings are not retained.
Cause: The battery pack has been removed before 2020
Do not remove or recharge the battery pack in a hazardous location.
WARNING
Cause: 2020 has not been used for 3 months or more and
Action: Do not touch the wire grid inside the
detector cell. Use a gentle jet of
compressed air to remove any dust or dirt in
the detector cell.
Action: Contact the Service Department.
was turned off.
Action: Replace the battery pack and reset the time
and date. Ensure 2020 has been turned off
before removing the battery pack. See
Removing and Replacing the Battery
Pack on page 30.
the internal battery (not the external battery pack)
has discharged.
Troubleshooting
137