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PEPPERL FUCHS 2001A-STD-CI PURGE PRESSURIZATION SYSTEM THIS SYSTEM LOOKS BRAND NEW AND PROBABLY IS. THERE ARE NO SIGNS OF USE INFORMATION BELOW IS FROM MANUFACTURERS WEBSITE Model 2001A is a pressurization or purging system that operates on a supply of compressed instrument air or inert gas. It regulates and monitors pressure within sealed (protected) enclosure(s), in order to prevent combustible dust accumulation or remove and prevent fl ammable gas or vapor accumulations. In Class II Areas, the system maintains a safe" (1.0") pressure. In Class I Areas system accomplishes four air exchanges and maintains a safe" (0.25") pressure. In addition electrical power control unit (EPCU) that monitors system operation and controls enclosure power. All start-up requirements must be satisfied before the EPCU will energize power to the enclosure(s). These processes reduce the hazardous (classified) area rating within the enclosure(s), in accordance with the NEC - NFPA 70, Article 500, NFPA 496 and ISA 12.4. In accordance with system instructions, start-up requires the air supply to be engaged and EPCU power to be energized. In Class II Areas, all dust must be removed from the enclosure(s). The enclosure protection vent (if used) must be tested and enclosure(s) must be sealed. The EPCU power control switch must be activated and the system will self-test. The enclosure pressure control regulator is then used to set a safe reading on the enclosure pressure gauge. In Class II Areas, power will energize shortly after safe pressure is stable. In Class I Areas, the system must perform an exchange cycle (determined by the safe pressure fl ow rate—fi ve minutes minimum) before power can be energized. Loss of safe pressure causes the EPCU to deenergize power to the protected enclosure(s). All systems include form C" " contacts for audible or visual alarm systems. (please look at our rules and privacy policy) |
W.Morales@machine--tools.com (Wallace Morales) for additional information. This email is used for forwarding to newsgroup user.
