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31604.DSK WP-SFO 2.4 DESIGN REQUIREMENTS A. The blower and associated controls shall be of a positive displacement or centrifugal type. The motor and all controls shall be suitable for a potentially explosive atmosphere due to the presence of explosive gases (e.g., Class 1, Division 2 per NEC). B. The air/water separator shall be made of steel or fiberglass with a minimum condensate storage capacity of 100 gallons and shall include a demister. The air/water separator shall have a high level switch that notifies the auto- dialer if the air water separator is three-fourths full, and a high-high switch that automatically shuts down the vapor extraction system if the separator is 90 percent full. The separator shall have an external sight glass that will indicate liquid level from zone to full capacity. The separator unit shall be mounted on an anchored stand with a bottom drain valve at least 3-112 feet above the concrete slab (separator shall adequately drain to a standard 55-gallon drum). I C. The frame and all piping of the supplied system must be constructed of carbon steel with a heat resistant protective paint coating (primer and finish coat). The influent and effluent pipes shall have 2-inch flanges. Valves shall be a ball type. All welds shall be ground smooth. The frame shall include a hook/pad eye for loading and unloading the skid-mounted unit, and anchor plates for bolting the frame to the slab. D. The system shall be supplied with vacuum and pressure relief valves as recommended by the blower manufacturer and an in-line influent filter as recommended by the blower manufacturer. E. Flow meters shall be provided at the locations shown on the Drawings. Flow meters shall be of the rotameter type with a range of 10 to 100 cubic feet per minute. F. Vacuum gauge shall be provided at the locations shown on the Drawings. Vacuum gauge shall be of the magnehelic type with a range of 10 to 150 inches of WG. G. Pressure gauge shall be provided at the location shown on the Drawing. Pressure gauge shall be magnehelic type with a range of 5 to 25 psi. H. Power and Controls: 1. The System Supplier shall be responsible for all wiring and controls internal to the vapor extraction system. The Contractor shall provide power to the control panel. 2. All materials and workmanship shall meet the requirements of Division 16. 3. The control panel can be hard wired or use programmable controlled logic. 4. The control panel shall include: a. HAND/OFF/AUTO switch for the vacuum blower. b. ' ALARM indicator light for high water in the air/water separator. BAE31604.AS.T1 13001 4 VAPOR EXTRACTION SYSTEM