Thermo Scientific Dionex, Operator'S Manual

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5 • AE Analyzer Enclosure Description
Doc. 065250-06 03/2020
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These temperature set points are designed for optimal performance of the air
conditioner/heater. If the set points require adjustment, contact Technical Support
for Dionex products for assistance.
5.8 AE Purge System (Option)
When the installation site is a Class 1, Division 2 location requiring intrinsically
safe equipment, a purge system is installed in the AE. The purge system uses
purge gas (compressed air or nitrogen) to maintain a positive pressure inside the
enclosure.
The purge system consists of the following features (see Figure 5-8 ):
•
A control unit with pressure regulator and alarm indicator ball. The alarm
indicator ball is green when the pressure inside the AE is adequate and red
when the pressure is low.
•
A relief valve.
•
An orifice that allows a fixed flow of gas through the AE.
This purge configuration does not include electrical interlocks. The
user is responsible for ensuring that all supplemental safety
requirements are met.
Figure 5-8. AE Purge System Features
Purge Control Unit
Relief Valve
Orifice
Alarm Indicator Ball