Oce Arizona 550 GT, User Manual

Page: 232 / 263

Fill the Coolant Reservoir
Introduction
The coolant is a thermal fluid used to maintain the temperature of the ink in the printheads
and ink reservoirs on the carriage. Temperature control of the ink is required in order to
achieve the correct ink viscosity, which affects the jetting velocity of the ink and thus the
quality of printed images. The coolant is pumped past a heater that has a thermostat to
maintain the coolant temperature. The coolant flows through each of the printheads and
then returns to the coolant reservoir. Each printhead has an internal sensor that provide
temperature feedback. The coolant reservoir contains a sensor to alert you if the level is
too low. A sight tube on the side of the carriage, displays the reservoir coolant level. The
operator must maintain this level at or near full.
Purpose
If the coolant level is low, the ink and printheads cannot be maintained at the proper
temperature. Periodically check the level of coolant and add more if it is below the center
of the sight tube.
When to do
Check the coolant level sight-tube, located at the side of the carriage, at least once a week
to see if the level is low. When filled to the proper level, the fluid will be at the top of the
sight-tube. If the level of coolant is lower than the center, it is time to fill it. Keep the
coolant at the full level to maintain the proper ink temperature as the coolant is important
to that process.
Note:
Change the coolant fluid at least one time every 12 months with new coolant. Over time
and with use, crystal deposits build up in the coolant and can impede the flow and result
in pump damage. Consult your service representative for details.
Before you begin
Verify that the coolant level is low in the sight-tube. If it is near the top, it is not necessary
to add coolant.
Required tool
■
Syringe (supplied with Starter kit)
■
Wear gloves (coolant will not harm the skin, but gloves are recommended).
Chapter 11 - Printer Maintenance 232
Fill the Coolant Reservoir