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UV Lamp Operation and Maintenance 6-19
Replacing UV Lamp
Bulbs
The UV lamp bulbs will gradually lose their intensity and there-
fore their ability to cure the ink. The control panel will display a
warning message when one or both of the bulbs have been
operated for 500 hours, but the bulbs may continue to cure
printed output for up to 1000 hours. The number of hours that
each lamp has operated is shown on the Front Page screen.
Replacing the bulbs as a pair is recommended. If the total oper-
ating time for the right and left bulbs is significantly different,
printing artifacts may be visible due to uneven ink curing. When
you replace the bulbs, be sure to reset the operating time
counter (Tools > Maintenance > Reset UV Lamp Hours).
Refer to the instructions that accompany the replacement bulbs
for a detailed procedure for replacing the lamps.
Note The UV lamps contain heavy metals and other ele-
ments that should be disposed of as hazardous
waste. They should be taken by a hazardous waste
service or facility that accepts mercury lamps.
Balancing Lamp Hours If you do an extensive amount of unidirectional printing, or other-
wise print with only one lamp, the lamps’ different hours of ser-
vice will eventually cause the lamps to cure ink differently and
reach end-of-life at different times. This would result in ink curing
anomolies.
To avoid this, switch between left-only and right-only printing as
needed to equalize the lamp hours. (See “Configure Printing” on
page 2-2 for instructions.)
The printer software will display a Warning message if the differ-
ence between the right and left lamps’ service hours exceeds
300, but you can display the lamp hour counts at anytime by
pressing the Status key on the Front Page, and advancing to the
page where the number of hours are listed.