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Downflo Workstation, DWST 4-1 to 6-4

A16

Photohelic Gauge Installation

Electrical installation, service, or maintenance work must be performed by a qualified electrician and comply with all

applicable national and local codes.
Turn power off and lock out all power before performing service or maintenance work.

Do not install in classified hazardous atmospheres without an enclosure rated for the application.

The Photohelic combines the functions of a differential pressure gauge and a pressure-based switch. The gauge function

measures the pressure difference between the clean and ambient air and provides a visual display of filter condition. The low-

pressure tap is located in the clean-air plenum on the back of the cabinet. The pressure-based switch function provides high-

pressure ON and low-pressure OFF control of the filter cleaning system.
1. Choose a convenient, accessible location on or near the collector for mounting that provides the best visual advantage.
2. Mount the gauge to the remote panel or door using the mounting ring, retaining ring, and four #6-32 x 1 1/4-in screws. Do not

tighten screws. Connect one 1/8-in NPT x 1/4-in OD male adapter to the low-pressure port of the gauge. Leave high-pressure

port open to the atmosphere. Align the adapter to the 2.375-in hole in the right-hand side of the mounting bracket. Tighten

screws.

3. Zero and maintain the gauge as directed in the manufacturer’s Operating and Maintenance Instructions provided.

Photohelic

®

Gauge

mounting bracket

#6-32 x 1/4-in

mounting screws

support structure

mounting surface

Photohelic gauge

high pressure port

low pressure port

1/8-in NPT adapter

plastic tubing

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Содержание Downflo DWST 4-1

Страница 1: ...stall operate or perform maintenance on this collector until you have read and understood the instructions precautions and warnings contained within this manual English Master Language Downflo Workstation DWST 4 1 4 2 4 3 4 4 and DWST 6 1 6 2 6 3 and 6 4 Installation and Operation Manual Installation Operation and Service Information IOM AG8550401 ENG Revision 0 ...

Страница 2: ... be left with the collector when installation has been completed DO NOT operate this collector until you have read and understood the instructions and warnings located in this manual For additional copies of this manual contact Donaldson Torit The Safety Alert Symbol indicates a hazardous situation which if not avoided could result in death or serious injury Obey all safety messages following this...

Страница 3: ...ngle Power Module Installation A4 DWST 4 2 to 4 4 and 6 2 to 6 4 Multiple Power Module Installation A5 Acoustic Hard Sided Booth Assembly A6 Soft Sided Acoustical Booth Assembly A8 Compressed Air Installation A9 Electrical Wiring A9 Solid State Timer Installation A11 Optional Equipment A15 Magnehelic Gauge A15 Photohelic Gauge A16 Delta P Control A18 Delta P Plus Control A18 Light Fixture A18 Afte...

Страница 4: ...hould comply with applicable codes and standards related to combustible dust Electrical installation must be performed by a qualified electrician This equipment is not designed to support site ducts piping or electrical services All ducts piping or electrical services must be adequately supported to prevent injury and or property damage Site selection must account for wind seismic zone and other l...

Страница 5: ...y liability for the fitness of a mitigation strategy or product for a particular installation or application The process owner s final selection of dust collectors and risk mitigation strategies should be based on the outcome of a Dust Hazard Process Hazard Analysis performed by the process owner Although early engagement of a dust collector supplier provides helpful insights on the availability a...

Страница 6: ...om a specific operation is required Typical applications include abrasive blasting batch mixing and grinding While the DWST effectively contains dust generated within the work area it does not provide source capture of dust and some noise will be emitted from the booth The 200 fpm indraft velocity produced by each power module is generally sufficient to prevent nuisance dust from escaping the DWST...

Страница 7: ... inside out and collected contaminants fall into the dust drawers At the end of each pulse the diaphragm valve closes and the filter cartridge resumes normal operation One filter cartridge is cleaned per pulse Electrical work during installation service or maintenance must be performed by a qualified electrician and comply with all applicable national and local codes Turn power off and lock out al...

Страница 8: ...for 1 2 in stainless steel set screws after eight hours of operation and again after 80 hours of operation Set screws on fan wheels must be properly tightened to avoid severe personal injury and or property damage During any service activities there is some potential for exposure to the dust in the collector Most dusts present safety and health hazards that require precautions Wear eye respiratory...

Страница 9: ...nd protective equipment when removing contaminants and filters Dirty filters may be heavier than they appear Use appropriate lifting methods to avoid personal injury and or property damage Turn power off and lock out all power before performing service or maintenance work Turn compressed air supply OFF bleed and lock out lines before performing service or maintenance work Do not operate with missi...

Страница 10: ...ue when securing the access cover as over tightening may cause damage to the filter and or equipment When filter replacement is complete check to ensure that each access cover is seated and sealed against the filter housing to ensure a dust tight housing seal Light Bulb Replacement This light fixture is serviced from inside the booth Replace per the light manufacturers specifications Optional Afte...

Страница 11: ...ent power to run all equipment Clean air outlet discharging dust Filters not installed correctly See Filter Installation Filter damaged or worn Replace filters as necessary Use only genuine Donaldson replacement parts See Filter Installation Access cover s loose Tighten access doors securely See Filter Replacement Insufficient airflow Fan rotation backwards Proper fan rotation is clockwise when vi...

Страница 12: ... input power is present but output voltage to the solenoid is not replace the timer board See Solid State Timer Installation No display on the Delta P Controller No power to the controller Use a voltmeter to check for supply voltage Fuse blown Check the fuse in the control panel See wiring diagram inside the control panel Replace if necessary Display on Delta P Controller does not read zero when a...

Страница 13: ...mer board Check the timer board s fuse Replace with one of equal value If supply voltage and fuse are good observe the control board The outlet LED indicates if the control board is attempting to pulse LED s flash to indicate power to solenoid Check output with an analog volt meter using the 150 Volt AC scale The needle deflects if voltage is present when LED flashes If LED s do not flash or no vo...

Страница 14: ...he GAUGE position Defective wiring Check wiring to solenoid valves Defective solenoid valves Check solenoid coils and replace as necessary Timer control board not energized Check supply voltage to timer board Check the timer board s fuse Replace with one of equal value If supply voltage and fuse are good observe the control board The outlet LED indicates if the control board is attempting to pulse...

Страница 15: ...t Not wired correctly Check and correct motor wiring for supply voltage See motor manufacturer s wiring diagram Follow wiring diagram and the National Electric Code Collector not wired for available voltage Correct wiring for proper supply voltage Branch circuit protection or overload tripped Disconnect power using the disconnect switch Press the black start button on the Manual Motor Protector MM...

Страница 16: ...extended The overload relay in the MMP resets automatically when the black start button is reset Defective motor branch circuit protection or overload relay Replace as necessary Defective control transformer or control transformer branch circuit protection Disconnect power using the disconnect switch Check the control transformer T1 the primary fuse FU1 and the secondary fuse FU2 If fuses are good...

Страница 17: ...rimary and secondary fuses FU1 and FU2 Lack of compressed air Maintain 50 60 psig Bleed compressed air supply Check for debris valve wear or diaphragm failure by removing the diaphragm cover on the pulse valves Check for solenoid leaks or damage If pulse valves or solenoid valves and tubing are damaged replace Push buttons do not work no pulse cleaning Loss of power Check disconnect fuses and tran...

Страница 18: ...A1 Donaldson Company Inc Appendix A Collector Installation ...

Страница 19: ... Installation Electrical installation including bonding and grounding of the collector must be performed by a qualified electrician This equipment is not designed to support site ducts piping or electrical services All ducts piping or electrical services must be adequately supported to prevent injury and or property damage Do not install in classified hazardous atmospheres without an enclosure rat...

Страница 20: ...ation Control drawing for weight and dimensions of the collector and components to ensure adequate crane capacity 7 Inspect for any damage and or missing parts and report to freight carrier 8 Check for any hardware which may have become loose during shipment and tighten as necessary Lift collector and accessories separately and assemble after collector is in place Use drift pins to align holes in ...

Страница 21: ... of the DWST 3 Move the power module into position Provide a minimum of 24 inches between rear side of collector and the wall for product maintenance Note Using the bolt hole plug pack shipped loose plug the bolt holes on the power module face with M8 x 20 mm bolts and washers provided 4 Lifting eyes can be removed once collector is in place to install more power modules and for mounting accessori...

Страница 22: ... lifting eyes before positioning the next power module as the lifting slings and chains can interfere 3 Secure the power modules together using the joining strips bolt hole plug pack M8 x 20 mm bolts and flat washers 4 Lifting eyes can be removed once collector is in place to install more power modules and for mounting accessories on roof DWST 4 2 to 4 4 and 6 2 to 6 4 Multiple Power Module Instal...

Страница 23: ...nd fasten the support legs to the edge of the corresponding walls 7 Bolt the top support channel to the gussets Note The DWST 2 requires one top support channel DWST 3 and DWST 4 require two top support channels When assembling the DWST 3 or DWST 4 bolt the two top support channels and the top support tie in together and then bolt to the gussets Roof panels are not intended as platforms Personnel ...

Страница 24: ...y Inc Acoustic Hard Sided Booth Assembly top panel angle splice plate mounting angle light fixture side panel angle booth panel support leg gusset side rail channel top support tie in module side angle top support channel ...

Страница 25: ...er for the end brackets to be attached See Bracket Detail for hole location and size 4 Install the mounting angles 2 places just below the sprinkler couplings on the power module Remove and reuse the existing bolts and washers 5 Insert the foot pad and corner bracket into the front legs 6 Insert the eight 8 roller hooks into the side channel Install one end of the side channel into the end bracket...

Страница 26: ... operation of the solenoid valves The valves should open and close sequentially at factory set 10 second intervals 4 If a Photohelic gauge Torit Delta P Torit Delta P Plus or similar device is used to control the solid state timer the solenoid valves pulse only when the differential pressure reaches the high pressure setpoint The valves continue to pulse until the low pressure setpoint is reached ...

Страница 27: ...sconnect switch low voltage starter solid state timer fan blower electrical solenoid electrical compressed air supply line sprinkler system not shown customer supplied Compressed Air and Component Installation Turn power off and lock out electrical power sources Turn compressed air supply OFF bleed and lock out lines before performing service or maintenance work ...

Страница 28: ... holes are sized for 3 4 in fittings Secure all conduit in the blower and solenoid plenums 4 Diaphragm valves have an external solenoid enclosure mounted inside the clean air plenum on the pressure manifold Wire each solenoid in the enclosure mounted on the compressed air manifold per the wiring diagram provided Pull the cover from the solenoid enclosure Wire solenoids through access points in rea...

Страница 29: ...actory set to clean one or more filters every 10 seconds during a cleaning cycle Do not increase supply pressure above 70 psig as component damage can occur 1FU 2FU 3FU 208 230V 60 Hz 3Ph IL1 IL2 IL3 1M 1OL 1T1 1T2 1T3 230V 115V H1 H2 H3 H4 X1 X2 stop start 1M 1M 1TGS OFF time ON time LAST CHANNEL LAST CHANNEL SWITCH SETTINGS 4FU 3A 105 to 135 V 50 60 Hz COM L1 L2 L3 L1 L2 2 1 16 8 2 4 1 1 2 4 3 5...

Страница 30: ...OL 3 7 10 8 9 1 2 3 4 5 6 SOL COM L1 L2 SOL 4 SOL 5 SOL 6 DWST 4 2 SOL 7 SOL 8 CONTROL BOX WITH 10 PIN TIMER SOL 1 SOL 2 SOL 3 7 10 8 9 1 2 3 4 5 6 SOL COM L1 L2 SOL 4 SOL 5 SOL 6 DWST 4 3 DWST 6 2 SOL 7 SOL 8 SOL 9 SOL 10 SOL 11 SOL 12 CONTROL BOX WITH 6 PIN TIMER SOL 1 SOL 2 SOL 3 DWST 4 1 1 2 3 SOL COM L1 L2 SOL 4 4 5 6 Wiring Diagram Control Box Timer to Solenoids ...

Страница 31: ...L 8 SOL SOL SOL SOL SOL SOL SOL 10 11 13 12 14 15 9 SOL 16 SOL 17 SOL 18 COM DWST 6 3 SOL CONTROL BOX WITH 20 PIN TIMER L1 SOL 1 2 3 4 L2 5 6 7 8 9 10 11 20 12 13 14 15 16 17 18 19 SOL 2 SOL 1 3 SOL 5 SOL SOL 7 SOL 6 8 SOL 9 SOL COM L1 SOL 1 2 3 4 L2 5 DWST 6 4 6 7 8 9 10 11 12 13 CONTROL BOX WITH 20 PIN TIMER 4 SOL 20 15 16 17 18 19 SOL SOL SOL SOL SOL SOL 10 11 13 12 14 15 SOL 16 SOL 17 SOL 18 S...

Страница 32: ...h and low pressure ports on the side of the gauges 3 Attach the mounting bracket using three 6 32 x 1 4 in screws supplied 4 Mount the gauge and bracket assembly to the supporting structure using two self drilling screws 5 Thirty five feet of plastic tubing is supplied and can be cut as needed Connect tubing from the gauge s low pressure port to the fitting in the clean air plenum Leave high press...

Страница 33: ...binet The pressure based switch function provides high pressure ON and low pressure OFF control of the filter cleaning system 1 Choose a convenient accessible location on or near the collector for mounting that provides the best visual advantage 2 Mount the gauge to the remote panel or door using the mounting ring retaining ring and four 6 32 x 1 1 4 in screws Do not tighten screws Connect one 1 8...

Страница 34: ...mpany Inc DWST 4 3 DWST 6 3 DWST 4 4 DWST 6 4 DWST 4 1 DWST 6 1 DWST 4 2 DWST 6 2 Magnehelic and Photohelic Gauge and Tubing Installation Magnehelic or Photohelic gauge low pressure port barbed nylon tee plastic tubing ...

Страница 35: ...2 Position the afterfilter plenum on the power module with the vertically mounted afterfilter facing over the booth 3 Fasten using M8 x 20 mm bolts and flat washers 4 Install the afterfilters in the afterfilter frame 5 Install HEPA filters with the filter gasket toward the inside of the frame 6 Install ASHRAE filters with the airflow arrow pointing to the outside 7 Position the clamping straps and...

Страница 36: ... wired and rotation checked Install the silencer to the top of the power module using the hardware and drawing supplied Chamber Silencer chamber silencer power module Acoustic Curtain Assembly Acoustic Curtain for Power Module 1 Install the acoustic curtain to the front of the power module by aligning the acoustic curtain holes with the non louvre door holes and secure with nylon Christmas Tree cl...

Страница 37: ...ontrol panel cover A red blower motor RUNNING light is also provided 3 Sequential start up is provided for all DWS 4 and DWS 6 2 3 and 4 modules This allows a delay between starting each blower motor and reduces undesirable overload current at start up 4 The control panel has troubleshooting capabilities If a blower motor shuts down due to a failure such as an overload the panel will flash the red...

Страница 38: ... avoided during work hours 4 In conjunction with the aftershift pulsing function a toggle switch located inside the control box turns the blower motors ON or OFF When the aftershift push button is activated with the toggle switch in the STAG position the even numbered blowers shut off and the odd numbered blowers remain on All valves starting with number one are pulsed three times The even numbere...

Страница 39: ... of the power module Replace cover when wiring is complete Control Box Tubing Connection control box plastic tubing barbed nylon tee When the aftershift button is activated in single power module collectors the blower turns off and each valve pulses three times The blower turns on the valves pulse three more times and both blower and pulsing turn off When the aftershift cleaning button is pushed t...

Страница 40: ...ation 6 With power supply ON check the operation of the solenoid valves by turning the switch on the front of the control panel in the HAND position and pressing the START button The valves should open and close sequentially at factory set 10 second intervals 7 Turn the switch OFF Sprinkler Consult with local authorities when installing fire control systems on dust collection equipment Sprinkler c...

Страница 41: ...avoid severe personal injury and or property damage 3 Check for proper rotation as noted on the fan housing Do not look into fan outlet to determine rotation View the fan rotation through the back of the motor Check that the exhaust plenum is free of tools or debris before checking blower fan rotation Stand clear of exhaust to avoid personal injury Do not interchange a power lead with the ground w...

Страница 42: ... needle 15 Once powered verify the Delta P or Delta P Plus comes on line and shows a filter restriction of near zero on the digital display 16 Using the Delta P or Delta P Plus Installation Manual as a guide confirm the values of the Low High and Alarm set points During normal operation the DWST will not begin to pulse clean until filter resistance reaches or exceeds the High set point 17 Set the ...

Страница 43: ... from the collector and dispose of in a suitable fashion for the dust in the collector See Filter Replacement for instructions Close and secure front access doors after filters are removed 3 Remove and empty the dust drawers of any residual dust 4 Disconnect compressed air supply from the collector and remove any associated pipe or fittings from the exterior of the collector 5 Disconnect electrica...

Страница 44: ...__________________________________________________________________________________ Dust Properties Kst________________Pmax_______________ MIE_____________ MEC___________________ Accessories____________________________________________________________________________________ Other_________________________________________________________________________________________ _______________________________...

Страница 45: ...Downflo Workstation DWST 4 1 to 6 4 A28 Service Notes Date Service Performed Notes ...

Страница 46: ...A29 Donaldson Company Inc Service Notes Date Service Performed Notes ...

Страница 47: ...f the foregoing warranty on services Products manufactured by a third party Third Party Product may constitute contain be contained in incorporated into attached to or packaged together with the goods Buyer agrees that a Third Party Products are excluded from Seller s warranty in this Section 7 and carry only the warranty extended by the original manufacturer and b Seller s liability in all cases ...

Страница 48: ...s beyond the control of Donaldson can affect the use and performance of Donaldson products in a particular application including the conditions under which the product is used Since these factors are uniquely within the user s knowledge and control it is essential the user evaluate the products to determine whether the product is fit for the particular purpose and suitable for the user s applicati...

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