East Helena High School

Dust and Fume Collectors PLEASE NOTE: *WE HAVE NOT INCLUDED ANY COSTS ASSOCIATED WITH THIRD PARTY VERIFICATION AS THERE IS NO CLEAR DEFINITION OF WHAT IS REQUIRED AND WHO THE THIRD PARTY IS THAT CAN VERIFY. THERE IS NO CODE THAT WE KNOW OF THAT STATES THIS VERIFICATION IS REQUIRED. *WE HAVE A LOWER AIR TO CLOTH RATIO THAN SCHEDULED - A LOWER AIR TO CLOTH RATIO MEANS THE AIR IS PASSING AT A SLOWER VELOCITY THROUGH THE FILTER TISSUE, SO THE LOADING OF THE FILTER IS LIGHTER, AND THE LOWER THE AIR TO CLOTH RATIO IS, THE BETTER THE SYSTEM. WE EXCEED THE THE SCHEDULED FILTER AREA ON BOTH UNITS AS WE HAVE SMALLER AREA CARTRIDGES FOR OUR COLLECTORS SO WE NEED MORE FOR THESE APPLICATIONS We have added: Wood dust collector, Now 10 cartridges Overbags on wood dust collector, after filters, explosion vents fan silencer spark detection system* flameback prevention damper, abort gate and VFD blower starting system. *We have added secondary spark detection after spray system. Welding, now 20 cartridges This collector does include secondary filters, explosion venting*, fan silencer,spark arrestor and VFD blower starting equipment. Welding collectors do not need explosion vents, they are included. Both dust collectors are NFPA compliant when equipped with the quoted accessories. Wood Shop Collector model 2MCV5-10 Description: • MAXIFLO upflow cartridge dust collector. • Pulse cleaning of the cartridges with compressed air. • Body and hopper made of 10 and 12 ga steel with reinforcement when required. • Tube sheet: 3/16 in • Inspection door to hopper • Supporting structure. • Polyurethane finish. • 2 x service doors for access to the cartridges. Specifications: • Dust collector model : 2MCV5-10 • Air volume: 6,250 cfm • Filters:Cartridges • Numbers of filters: 10 • Type: Cellulosic • Overbag pre-filtering system • Total filter area: 3,150 sq. ft • Air/cloth ratio: 1.98/1 • Cartridges efficiency: 99.99% on 0.5 μm dust particles. Optional equipment included: • Air inlet with baffle • Explosion vent panel • Bottom support section with two hoppers • Two (2) drums with quick detach lids • Safety filters integrated to cabinet on top Pulse cleaning system: ▪ Compressed air network from manifold to valves. ▪ 5 x diaphragm valves of 1 in dia.each ▪ NEMA 4/12 pilot valve kit with thermostatically controlled heater, prewired to diaphragm valves ▪ Electronic pulse control board with LED analog display, programmable for on/on demand/ and continuous pulsing, pressure differential display pulse sequence Blower: Mounted on top of dust collector TCF TCBI-20 Arr: 4 direct drive Class: III Air volume: 6,250 cfm TSP: 14.0 Motor hp: 20 Type: TEFC, Premium efficiency, inverter duty Voltage: 460/3/60 Outlet damper Silencer Note: Dust collector requires 12 cfm of 90 psi dry compressed air, BY OTHERS Control panel including: NEMA 4/12 panel for remote mounting by EC VFD starter and control system Fused disconnect switch Transformer Man-off-auto selector switch Pilot lights Explosion relay Pilot lights to indicate no return valve operation ATl certification Remote start/stop station Security: No return valve • NRV-16 Flame back prevention damper, 100% compliant to NFPA-69 and ATEX approved including: • Inspection door, damper locking latch • Micro switch for system shut down • Dust level sensor in the damper frame • Control panel for sensor power and integration • KST 200 resistance Note: NRV-15 should be installed some 7 feet from the dust collector air inlet and would require a holding structure - BY OTHERS. Spark detection system • An-104 spark detection for 1 zone including: • 4 x infra-red detectors, • Spray with solenoid and strainer • Battery reserve power • Horn • 24 in abort damper including: • Welded metal casing • Aluminum damper with reset bar • Outlet cowl with bird screen • Electro- magnetic holding clamp • Control panel NOTE: All field wiring by others Welding shop collector model 5MCV4-20 Description: • MAXIFLO upflow cartridge dust collector. • Pulse cleaning of the cartridges with compressed air. • Body and hopper made of 10 and 12 ga steel with reinforcement when required. • Tube sheet: 3/16 in • Inspection door to hopper • Supporting structure. • Polyurethane finish. • 3 x service doors for access to the cartridges. Specifications: • Dust collector model: 5MCV4-20 • Air volume: 13,700 cfm • Filter: Cartridges • Numbers of filters: 20 • Type: Cellulosic • Total filter area: 6,300 sq. ft • Air/cloth ratio: 2.17/1 • Cartridges efficiency: 99.99% on 0.5 μm dust particles. Optional Equipment Included: • Air inlet with baffle • Explosion vent • Bottom support section with hopper • Drum with quick detach lid • Safety filters on top Pulse cleaning system: ▪ Compressed air network from manifold to valves. ▪ 5 x diaphragm valves of 1-1/2 in dia.each ▪ NEMA 4/12 pilot valve kit, prewired to diaphragm valves ▪ Electronic pulse control board with LED analog display, programmable for on/on demand/ and continuous pulsing, pressure differential display pulse sequence Blower: Mounted on top of dust collector TCF HDBI-40 Arr: 4 direct drive Class: III Air volume: 13,700 cfm TSP: 12.0 in wg Motor hp: 40 Type: TEFC, Premium efficiency, inverter duty Voltage: 460/3/60 Outlet damper Silencer Note: Dust collector requires 12 cfm of 90 psi dry compressed air - BY OTHERS Control panel including: NEMA 4/12 panel for remote mounting by EC VFD starter and control system Fused disconnect switch Transformer Man-off-auto selector switch ATl certification Remote start/stop station Spark arrestor All metal and painted spark eliminator 28 in dia Access door Plate for cooling of possible embers INCLUDES FACTORY ASSISTED STARTUP

Perforated Spiral Duct for Dust Collection Supply

Dust Collection Ductwork

Dust Collection Ductwork Missed

Duct Silencer for DC1 Fan Outlet

28" 90 Degree Elbow - 20.5" Throat and 2' Spool Piece with Flange welded on 1 end.