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Summary of Contents for Donaldson Torit Downflo II

  • Page 2 Donaldson Torit dust collection equipment is not equipped with fire extinguishing or explosion protection systems. • DO NOT allow sparks, cigarettes or other burning objects to enter the hood or duct of any dust or fume control equipment as these may initiate a fire or explosion.
  • Page 3: Table Of Contents

    Dwyer Instruments, Inc. This manual contains specific precautionary statements relative to worker safety. Read thoroughly and comply as directed. Discuss the use and application of this equipment with a Donaldson Torit representative. Instruct all personnel on safe use and maintenance procedures.
  • Page 4: Description

    Donaldson Company, Inc. Purpose and Intended Use Description Downflo II collectors are widely used on nuisance The Downflo II dust collector is a continuous-duty, dust where the load to the collector is less than two modular collector with cartridge-style filters. The grains per cubic foot.
  • Page 5: Rating And Specification Information

    Downflo II, Model DFT 2-8 through 4-128 Rating and Specification Information All Units ( per IBC 2003 Specifications): Wind ........90 MPH Exposure C Ground Snow Load ....... Pg = 40 PSF Seismic Spectral Acceleration, S Compressed air, psi ........90-100 ..........
  • Page 6: Operation

    • Use special care when selecting and • Donaldson Torit equipment is not equipped operating all collection equipment with fire extinguishing or explosion protection when combustible materials are systems.
  • Page 7: Inspection On Arrival

    Downflo II, Model DFT 2-8 through 4-128 Inspection on Arrival Installation 1. Inspect unit on delivery. Site Selection, Grade-Mounted Units 2. Report any damage to the delivery carrier. 1. The unit can be located on a reinforced concrete 3. Request a written inspection report from the foundation or rooftop.
  • Page 8: Electrical Wiring

    Donaldson Company, Inc. Rigging Instructions Electrical Wiring Suggested Tools & Equipment CAUTION! Clevis Pins and Clamps Lifting Slings • Electrical installation must be Crane or Forklift Pipe Sealant performed by a qualified electrician Drift Pins Pipe Wrenches and comply with all applicable Drill and Drill Bits Screwdrivers national and local codes.
  • Page 9: Typical Installation

    Downflo II, Model DFT 2-8 through 4-128 Typical Installation...
  • Page 10: Standard Equipment

    Donaldson Company, Inc. Standard Equipment Field Assembly Standard equipment consists of modules, inlet deflectors, yokes, filters, hoppers, and legs. Single- Field assembly of modules may be required due to module through six-module units are delivered with truck capacity, crane capacity, or specific customer the inlet deflectors, yokes, and filters factory requirements.
  • Page 11: Module Assembly

    Downflo II, Model DFT 2-8 through 4-128 Module Assembly Note: Two cranes are required to lift and assemble modules. 1. Remove the protective cover from the end of each module. 2. Remove one column of access covers, filters, venturis, yokes, and deflector panels from the joint-side of each module.
  • Page 12: Yoke, Venturi, And Filter Installation

    Donaldson Company, Inc. Yoke, Venturi, and Filter Installation Notes: Installing yokes requires two people. Place blocks under assembled modules during yoke and filter installation. 1. Thread a thin jam-nut on each of the yoke rod ends to the shoulder. See Detail D and E. 2.
  • Page 13: Hopper Installation

    Hopper Installation There are four ledge-free hopper styles offered for 2. Apply sealant around the hoppers top flange the Downflo II. A single-module wide that spans toward the inside of the bolt pattern. two portholes; a single-module wide that spans three 3.
  • Page 14: Leg Installation

    Donaldson Company, Inc. Leg Installation Leg sets are designed for standard height collectors 3. Use drift pins to align the holes in the collector and are rated as shown in the Rating and with the holes in the legs. Attach each leg with Specification Information.
  • Page 15 Downflo II, Model DFT 2-8 through 4-128 5. Recheck the position of the leg sets and cross 7. Level unit. Tighten all hardware on legs, cross braces. braces, and foundation anchors. 6. Using a crane, lift the assembled unit onto the 8.
  • Page 16: Compressed Air Installation

    Donaldson Company, Inc. Compressed Air Installation 1. Remove the plastic pipe plug from the unit’s air CAUTION! manifold and connect the compressed-air supply • The compressed-air supply must be oil line. Use thread-sealing tape or pipe sealant on and moisture free. Contamination in all compressed-air connections.
  • Page 17 Downflo II, Model DFT 2-8 through 4-128 Compressed Air and Component Installation...
  • Page 18: Solid-State Timer Installation

    Donaldson Company, Inc. Solenoid Connection Solid-State Timer Installation The unit is equipped with 115-Volt solenoid valves CAUTION! that control the pulse-cleaning valves, which clean • Electrical installation must be the filters. performed by a qualified electrician One of three types of solenoid enclosures, the and comply with all applicable weatherproof NEMA 4 with 3D2 solenoids, the national and local codes.
  • Page 19 Downflo II, Model DFT 2-8 through 4-128 Pulse OFF Time Solenoid Valves Factory set at 10-seconds, adjustable from 1.5-sec 115-Volt at 19.7 watts each minimum to maximum 30-seconds. Compressed-Air Operating Temperature Range Set compressed-air supply at 90-psig. The timer is -20°...
  • Page 20: Preliminary Start-Up

    Donaldson Company, Inc. Preliminary Start-Up Filter Installation and Replacement 1. Check all electrical connections for tightness and contact. CAUTION! 2. Check for and remove all loose items in or near the inlet and outlet of the unit. • Use proper safety and protective equipment when removing 3.
  • Page 21 Downflo II, Model DFT 2-8 through 4-128 Filter Replacement...
  • Page 22: Filter Replacement

    Donaldson Company, Inc. Filter Replacement Dust Disposal Note: Place filter part number label (supplied with 1. Turn unit OFF and empty dust container as each replacement filter) over the filter part necessary to minimize dust in the hopper. number listed on the unit’s rating plate. 2.
  • Page 23 Downflo II, Model DFT 2-8 through 4-128 This Page Intentionally Left Blank...
  • Page 24: Optional Equipment

    Both power packs are designed to fit on the top or side of the Downflo II. CAUTION! Note: The use of a damper is required to control BEFORE INITIAL OPERATION: airflow through unit.
  • Page 25 Downflo II, Model DFT 2-8 through 4-128 Power Pack, TBI with Spacer Ring and TBI with Spacer Spool for Explosion Vented Units...
  • Page 26: Side Mount Power Pack

    Donaldson Company, Inc. Side-Mount Power Pack for Units Built After July 2003 4. Install the motor and blower assembly to the fan CAUTION! housing using the original hardware and caulk • Side mounting a power pack requires sealant. side power adapter to support the 5.
  • Page 27 Downflo II, Model DFT 2-8 through 4-128 This Page Intentionally Left Blank...
  • Page 28: 55-Gallon Drum Pack

    Donaldson Company, Inc. 55-Gallon Drum Pack Without Slide Gate The drum pack is designed to fit a customer- supplied, standard 55-gallon drum and provides easy 1. Place the 1/4-in diameter rope-type sealant access for dust removal and disposal. A flexible hose between the hopper flange and the adapter as connects the drum cover and slide gate, or drum shown.
  • Page 29 Downflo II, Model DFT 2-8 through 4-128 55-Gallon Drum Pack with Slide Gate 55-Gallon Drum Pack without Slide Gate...
  • Page 30: Magnehelic Gauge

    Donaldson Company, Inc. Magnehelic Gauge The Magnehelic is a differential pressure gauge used 2. Before drilling, place a piece of non-combustible to measure the pressure difference between the cloth over the filter opening in the clean-air clean- and dirty-air chambers and provides a visual plenum to protect them from drilling chips.
  • Page 31 Downflo II, Model DFT 2-8 through 4-128 5. Plug the pressure ports on the back of the gauge using two, 1/8-in NPT pipe plugs supplied. Install two, 1/8-in NPT male adapters supplied with the gauge into the high- and low-pressure ports on the side of the gauge.
  • Page 32: Photohelic Gauge

    Donaldson Company, Inc. Photohelic Gauge The Photohelic combines the functions of a 3. On the back of the gauge, remove four #6-32 x differential pressure gauge and a pressure-based 5/16-in screws and plastic enclosure. Set aside. switch. The gauge function measures the pressure Add two jumper wires supplied by customer.
  • Page 33 Downflo II, Model DFT 2-8 through 4-128 Photohelic Gauge Installation...
  • Page 34: Delta P Control

    Donaldson Company, Inc. Delta P Control Description Alarm The Delta P Control monitors the differential The alarm setpoint is set to a higher setting than pressure between the clean and dirty air plenums, used to start the filter cleaning cycle. It indicates providing a visual display of the filter condition.
  • Page 35: Delta P Plus Control

    Downflo II, Model DFT 2-8 through 4-128 Delta P Plus Control Description drop to exceed the Low setpoint, and then for The Delta P Plus Control monitors the differential the pressure drop to approach zero. After the pressure between the clean and dirty air plenums, blower has come to a stop, the Delta P Plus providing a visual display of the filter condition.
  • Page 36: Transition And Rotary Valve

    Donaldson Company, Inc. Transition and Rotary Valve 1. Place 1/4-in diameter rope-type sealant to the The 7-in tall transition is designed to connect a inside of the transition’s bolt pattern. standard hopper and a rotary valve. Rotary valves are used as an airlock and a metering device in dust 2.
  • Page 37: Damper And Silencer, Tbi

    Downflo II, Model DFT 2-8 through 4-128 Damper and Silencer, TBI 1. Install the power pack as described in Power c. Secure brackets using 3/8-in thread-forming Pack. bolts. 2. Attach the damper to the fan exhaust outlet d. If a gap exists between the silencer and the using the bolts, washers, and hex nuts supplied.
  • Page 38: Plenum Silencer, Trb

    Donaldson Company, Inc. Plenum Silencer, TRB Abrasion-Resistant Inlet Collar 1. Remove the unit’s front cover plate. Remove excess sealant from opening. 1. Apply sealant and attach the bottom panel to the collector as described on the assembly drawing 2. Apply 1/4-in diameter rope-type sealant around shipped with the silencer.
  • Page 39: Platforms And Ladders

    Downflo II, Model DFT 2-8 through 4-128 Platforms and Ladders Stationary platforms are available for use on single to eleven module, two filter wide units and three 1. Pre-assemble the platform according to the module, three filter wide units. instructions shipped with the platform. The...
  • Page 40: Cold Climate Kit

    Donaldson Company, Inc. Cold Climate Kit connection kit following the manufacturer’s A cold climate kit provides heat to the pulse valves instructions. to prevent cold weather freeze up. The basic kit, for use in applications that have a moderate amount of 6.
  • Page 41: Explosion Vents

    Downflo II, Model DFT 2-8 through 4-128 Explosion Vents Sprinkler Installation CAUTION! CAUTION! • Personal injury, death, or property Sprinkler systems place a large quantity damage can result from material of water in the dust collector when discharge during venting.
  • Page 42: Troubleshooting

    Donaldson Company, Inc. Troubleshooting...
  • Page 43 Downflo II, Model DFT 2-8 through 4-128...
  • Page 44 Donaldson Company, Inc. Troubleshooting...
  • Page 45 Downflo II, Model DFT 2-8 through 4-128...
  • Page 46: Service Notes

    Donaldson Company, Inc. Service Notes...
  • Page 48: Warranty

    The Donaldson Torit Warranty Parts and Service © 2003 Donaldson Company, Inc. Printed in USA IOM AD3310701, Revision 7 August 2010...

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