Oce Arizona 365 GT, User Manual

Page: 207 / 234

How to Change a UV Lamp Bulb
Introduction
Your Océ Arizona printer uses two UV lamps, one on each side of the carriage, to cure the UV ink
during printing. The bulbs in these UV lamps have a limited lifetime and must be replaced by the
operator if they fail or when they can no longer cure the ink at maximum available power.
When to do
Although the functional life of the UV lamps can be as high as 500 hours, there are factors that
can reduce the expected lifetime. Operational practices, such as turning the lamps off and on
frequently, using them at high intensity all of the time, or touching the bulbs with your fingers,
can shorten their life. Océ recommends that both UV Lamp bulbs be replaced at the same time to
ensure that the curing effect is balanced when printing in both directions. In the case of a
premature failure or accidental breakage of one lamp, the operator can decide to replace only one
lamp but should confirm image consistency after the replacement. Uneven curing can cause
gloss banding in the printed image. We also recommend that you change the lamp filters when
the bulb is changed.
NOTE
The Flatbed Settings icon on the printer interface allows the operator to control the power
output of each UV lamp independently. To extend lamp life, use the lowest setting that provides
adequate curing for a particular media. However, avoid handling media with insufficient curing
as partially cured UV ink on your skin can cause irritation and sensitization.
Before you begin
1. Turn off the ink temperature.
2. Turn off the UV lamps.
3. Slide the maintenance station drawer out from under the carriage.
4. Press switch 2 (middle) to raise the carriage to its maximum height (this will provide access to
clean the quartz window later in this procedure).
5. When the ink temperature is below 40°C (104°F) and the UV Lamps are cool, click on the
Shutdown button in the Tools and Utilities module.
6. Turn off the printer power (see How to Power the Printer On and Off for proper procedure).
7. Apply a lockout to the AC power switch.
CAUTION
The UV lamps and the carriage guard may be hot if the printer has been active. Avoid touching
the guard and the lamp assembly until it is cool.
CAUTION
These UV lamp bulbs contain mercury, and if they are broken the vapor is toxic if inhaled. The
lamp bulbs must be disposed of according to local environmental regulations.
How to Remove the Lamp Housing
Procedure
1. Remove the carriage guard by lifting it straight up and then away from the carriage.
How to Change a UV Lamp Bulb
Chapter 11 - Printer Maintenance 207