Fill The Coolant Reservoir - Oce Arizona 640 GT User Manual

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.
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 low.
When to do
Check the coolant bottle, located in the Primary Ink Bay, to see if the level is low. Keep the coolant
level up to ensure proper ink temperature.
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
Check the coolant level in the bottle. Always keep the bottle full.
Océ Arizona 600 Series
Fill the Coolant Reservoir
Chapter 12 - Printer Maintenance 199