Oce Arizona T220UV User Manual - Uv Lamp Maintenance
Océ | Printer Maintenance
7-102
3010102780-B
7.1.2
Maintenance of the UV Equipment
Preventative maintenance of the UV lamp curing system on the Arizona T220UV is
important for keeping the printer in proper operating condition. A good preventative
maintenance program is one which evaluates the entire printing process, including UV
curing. It must periodically check the features of the equipment which, if not maintained,
would result in the shutdown of the printer.
The Arizona T220UV printer has a "safety Interlock" system designed to stop the entire
unit as soon as a specific problem develops. Error messages are displayed on the
operator control panel when a safety interlock is tripped. Refer to “Emergency Stop” on
page 30 for some of the error messages that occur when various interlock situations
occur.
UV Lamp Maintenance
The frequency of use of the printer will help determine the type of maintenance program
needed. A printer that is running part of one shift will naturally require different attention
than one running 24-hours a day or three shifts.Lamp maintenance must consider several
variables. These variables will determine how frequently the lamps should be changed
or inspected. The production usage or time on will have an effect on the bulb life.
Lamp maintenance must go beyond "is it on?" The periodic use of a UV intensify
analyzer will establish the level of energy the lamps should produce. This can then be
used to check and monitor the established information. There are several types of UV
intensify analyzers available, each of which will produce information which can be
interpreted for this evaluation. The frequency of this test would depend your
requirements. At the start of a maintenance program, very frequent tests will allow you
to document the performance of a unit, as well as the output of each of the lamps. It
would also be practical to test the spectral output periodically throughout a production
to ensure consistency. It is important that the user recognizes this factor and addresses
his maintenance program accordingly.
Handling of UV Lamps
During the installation and the handling of the lamp or cleaning of the reflectors, it is
possible to get foreign matter on the bulb. This will have an effect on the transmission
of light. A fingerprint will etch itself right into the quartz, presenting two problems. The
etched area will transmit light as a clear section of the lamp. In addition to a reduction
of light transmission, the area etched will weaken the quartz itself and increase the
possibility of breakage. This breakage may occur during the machine's operation or even
while handling.The collection of dirt on the lamp from other sources is possible and it is
recommended that bulbs be cleaned before installation to ensure there is nothing on the
quartz.