Fill The Coolant Reservoir; Maintenance; Printhead - Oce Arizona 400 Series 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 print-
heads 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 feed-
back.
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.
Fill the Coolant Reservoir
Chapter 12 - Printer Maintenance 237