Fill The Coolant Reservoir - Oce Arizona 250 GT User Manual

Fill the Coolant Reservoir

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
in series through each of the printheads and then returns to the coolant reservoir.
Each printhead has an internal sensor that provide temperature feedback. The
reservoir block also has a sensor to provide feedback. The coolant reservoir contains
an optical level sensor. A sight tube on the side of the gantry, at the opposite end from
the carriage, displays the level of coolant in the reservoir. The operator must
maintain this level.
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 coolant if it is
below the center of the sight tube.
When to do
The interface software displays an error message if the level of coolant is low. To
ensure the maintenance of proper ink temperature fill the coolant reservoir as soon
as you see this message.
Before you begin
Check the coolant level sight-tube located at the side of the gantry to verify that the
level is low. The sight-tube is located on the gantry
Hardware' on page
Required tools
Syringe (supplied with Starter kit)
Wear gloves (coolant will not harm the skin, but gloves are recommended).
Coolant
Note: High temperatures can affect the UV ink and cause its viscosity to change in
ways that will decrease print quality. The operator interface display shows the
temperature of the ink. For optimal quality the ink temperature must be at 47 degrees
Centigrade (116 degrees Fahrenheit). Printing cannot start until the ink in the
reservoir block and printheads are warmed up.
114 Chapter 8 Printer Maintenance
40) .
(see 'Operator Interface