Precision Platform 4022 Scanner
Site Preparation
2.12.3.
Choosing a head cooling configuration
The cooling system to be used at a particular site depends on the
following site and scanner characteristics:
•
Scanner frame and head ambient temperature
•
Cooling-fluid requirements of outboard sensors attached to the
heads
•
Quality and temperature of the mill water supply
•
Ambient temperature of the chiller
All head cooling needs to meet the following criteria:
•
Pressure: 2-4 bar [30 – 60 psig]
•
Flow rate: 8 L/minute [2 gal/min] maximum
Table 2-7 contains the guidelines for determining the cooling
configuration appropriate for local conditions.
Table 2-7 Configurations for Cooling Heads and PMP Enclosure
Depending on Site and System Characteristics
Potable
Water
Coolant
Supply
Temperature
Cooling
Configuration
Honeywell
Part Number
Comments
Yes
< 30°C [86°F]
Mill Supply
(Open Loop)
n/a
Ensure water is
potable.
No
< 27°C [80°F]
Heat Exchanger
(Closed Loop)
26000175
+
No
> 30°C [86°F]
Chiller
(Closed Loop)
26000191
+
(60 Hz)
26000192
+
(50 Hz)
Heat exchanger and
chiller ambient
temperature not to
exceed 57°C
[135°F]
+
+
Reference product Specification documents GN 26000175 and GN 26000191and GN 26000192 for
detailed specifications. Mill is free to select its own compatible chiller
i
N
OTE
:
Set up the Precision Platform with a heat exchanger or a chiller, even
when the mill water satisfies the conditions outlined in this subsection.
10/4/07
p/n:
6510020208
2-20
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