How To Change A Uv Lamp Bulb - Oce Arizona 440 GT User Manual

User Manual: Arizona (AZ) 440 GT, AZ 440 XT, AZ 460 GT, AZ 460 XT, AZ 480 GT, AZ 480 XT - Rev. B, 4/2013

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.
How to Change a UV Lamp Bulb
Chapter 12 - Printer Maintenance 261