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CARB Approved IOM 12 - ARID Permeator AT-150 - VR-201-Z / VR-202-Z <br /> until the oil level is brought back up. The oil level horn alarm is silenced by pushing the <br /> alarm silence button on the front of the control panel. <br /> The main cabinet houses all components except the electrical control panel, which is <br /> mounted in a zone free area. The main cabinet can be mounted at grade, or above or <br /> below ground. The electrical components in the main cabinet are rated for operation in <br /> hazardous locations Class I, Groups C &D (UL, TUV, PTB and BASEEFA approvals). <br /> The main cabinet dimensions are Width: 3 ft., Depth: 3 ft., Height: 5 ft and the weight is <br /> approximately 750 pounds, uncrated. <br /> Other items required for operation of PERMEATOR include the following: <br /> Pressure vacuum vent valves (PN valves) which are installed on the manifold storage <br /> tank vent lines. These valves are designed to prevent high vacuum or high pressure <br /> conditions in the storage tanks and to increase the recovery efficiency of Phase (Stage) I <br /> cargo tank delivery operations. Typical pressure settings in USA are+3 inches water <br /> column(407"water equals 1 atmosphere)pressure threshold and-8 inches water column <br /> vacuum threshold. Only PN valves certified on CARB Phase (Stage) I EVR Executive <br /> Orders are permitted for installations in California. Exhibit 2 of the VR-202 series <br /> Executive Order(starting with Revision Y) shows typical installation options for PN <br /> valve installation. <br /> Mounting stand required to place PERMEATOR at grade. A suitable concrete support <br /> pad is poured and cured and the stand is secured to this pad with bolts. This stand is <br /> included with PERMEATOR and does not have to be supplied by the installation <br /> contractor. <br /> For incorporation of PERMEATOR into an integrated vehicle vapor recovery and storage <br /> tank pressure management system, additional items are required for the "front-end"vapor <br /> recovery system. These components, typically referred to as "hanging hardware", such <br /> as nozzles, vacuum pumps, hoses, and breakaways are provided by existing Phase (Stage) <br /> II vapor recovery system suppliers listed on the VR-202 series Executive Order(any <br /> Revision level). <br /> 6 <br />