INSTALLATION, OPERATION AND MAINTENANCE MANUAL – COSA
9610™
15 | Page
1.6.2.1 Operation
The X-Purge consists of the control unit and user interface mounted in a 316L stainless steel
Type 4X (IP66) enclosure with the pneumatic solenoid valve mounted on the unit. A
proportional valve can be ordered in place of the solenoid valve for continuous control of
flow and pressure to the enclosure.
The EPV-X-Purge relief vent is separate and is mounted to the enclosure. The components
of the X-Purge control unit are listed below:
•
EPCU mounted in an explosion/flameproof enclosure
•
I.S. user-interface with display and cable
•
I.S. termination board (does not come with ‘CK’ kit version)
•
Manifold with I.S. solenoid valve (does not come with ‘CK’ kit version)
•
Flush mount type 4X IP66 fitting for protective gas supply to enclosure with tube attached
•
Type 4X cable glands for I.S. wiring to I.S. inputs, vents, and temperature modules
•
316L stainless steel pipe nipples for power wires
•
316L stainless steel type 4X enclosure for the X-Purge controller
The components of the EPV-6000 vent:
•
EPV-6000 vent with spark arrestor screen
•
1½” sealing nut with gasket for attachment of vent to customer’s enclosure
•
One 5 meter, quick disconnect cable; blue (denoting I.S.), for connection to I.S.
termination board inside X-Purge control unit
The X-Purge control unit and vent are mounted to the calorimeter enclosure. Bottom, right
side mounting can be completed with only one control unit and vent. One unit is used for
enclosure sizes up to 450 ft3 (12.7 m3).
1.6.2.2. Electronic Power Control Unit – EPCU
The EPCU houses the redundant microprocessors, enclosure power contacts, (2) auxiliary
contacts, power supply module, galvanically isolated barriers for the inputs, vent(s), and
temperature modules; all stackable and easy to remove and install into the explosion proof
enclosure that houses them.
The power supply module is available in 24 VDC or 100-240 VAC units. The enclosure power
contacts are forced-guided safety relays. The auxiliary contacts can be user configured for
different functions depending on user requirements.
1.6.2.3. User-Interface Controller – UIC
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