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15

Donaldson Company, Inc.

Maintenance Information

Instruct all personnel on safe use and maintenance 
procedures.

Use proper equipment and adopt 

all safety precautions needed 

for servicing equipment.  Electrical 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 electrical 

power sources before performing service or 

maintenance work.
Do not install in classified hazardous 

atmospheres without an enclosure rated for 

the application.
Turn compressed air supply OFF and bleed 

lines before performing service or maintenance 

work.

Do not set compressed-air 

pressure above 60-psig.  

Component damage can occur.
All compressed air components must be sized 

to meet the maximum system requirements of 

60-psig supply pressure.
The compressed-air supply must be oil 

and moisture free. Contamination in the 

compressed air used to clean filters will result 

in poor cleaning, cleaning valve failure, or poor 

collector performance.
Purge compressed air lines to remove debris 

before connecting to the unit’s compressed air 

manifold.

Operational Checklist

1.  Monitor the physical condition of the collector and 

repair or replace any damaged components. 

 

Routine inspections will minimize downtime and 
maintain optimum system performance. This 
is particularly important on continuous-duty 
applications. 

 

Periodically check the compressed air components 
and replace compressed air filters. 

 

Drain moisture following the manufacturer’s 
instructions. With the compressed air supply ON, 
check the cleaning valves, solenoid valves, and 
tubing for leaks. Replace as necessary. 

2.  Monitor pressure drop across filters.
 

Abnormal changes in pressure drop indicate a 
change in operating conditions and possibly a fault 
to be corrected.  For example, prolonged lack of 
compressed air will cause an excess build-up of dust 
on the filters resulting in increased pressure drop. 
Cleaning off-line with no flow usually restores the 
filters to normal pressure drop.

3.  Monitor exhaust.
4.  Monitor dust disposal.

Filter Removal and Installation

Use proper safety and protective 

equipment when removing 

contaminants and filters.
Dirty filters may be heavier than they appear.
Use care when removing filters to avoid 

personal injury.

Filter Removal

1.  Turn power to unit OFF.
2.  Start at the top access port.
3.  Remove access cover.  For units without Bag-In/Bag-

Out:  remove access cover by lifting latch handle 

and lifting cover to remove from yoke.  For units with 

Bag-In/Bag-Out:  lift up access cover handle and  

while pushing in on cover, slide access cover to the 

side 1-inch to remove access cover.  

 

If the access cover clamp fails to operate smoothly, 

apply WD-40

®

 to the riveted pivot points and to the 

clamp rod where it passes through the outside of the 

cover.  Wipe off overspray.

4.  Break the seal between the filter cartridge and the 

sealing surface. 

WD-40® is a registered trademark of WD-40 Company.

NOTICE

Содержание DFO 2-4

Страница 1: ...2...

Страница 2: ...bility or liability for the suitability of any fire and or explosion mitigation strategy or any items incorporated into a collector as part of an owner operators hazard mitigation strategy Improper op...

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Страница 4: ...rsatility of the unit standard options include top front and abrasion resistant inlets HEPA and ASHRAE afterfilter packs Checker board control panel and various dust removal options Purpose and Intend...

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Страница 6: ...ng system diaphragm valve compressed air supply hopper Filter Cleaning Operation dirty air inlet clean air outlet clean air outlet filter cartridges clean air plenum Normal Operation dirty air inlet o...

Страница 7: ...the unit will compromise unit performance Inspect unit to ensure all hardware is properly installed and tight prior to operating collector Installation Site suitability must account for wind seismic...

Страница 8: ...e capacity Allow only qualified crane operators to lift the equipment Refer to applicable OSHA regulations and local codes when using cranes forklifts and other lifting equipment Lift unit and accesso...

Страница 9: ...binet 2 Apply sealant to hopper flange 3 Fasten hopper to cabinet 4 Assemble legs and cross braces 5 Lift unit and hopper into position over legs and lower slowly 6 Fasten legs to unit securely 7 Lift...

Страница 10: ...hopper following these instructions 1 Stand the hopper on the discharge end 2 Apply 1 4 in diameter rope type sealant around the top flange toward the inside edge of the bolt pattern 3 Lift the colle...

Страница 11: ...abinet and hopper assembly into position over the legs and lower slowly 3 Use drift pins to align the holes in the collector with the holes in the legs Attach each leg as shown using the hardware supp...

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Страница 13: ...o manifold solenoid electrical connection manifold solenoid enclosure diaphragm valve hopper blower fan Magnehelic gauge 120 Volt blower motor starter solid state timer safety exhaust valve Notes 1 No...

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Страница 16: ...upply Turn electrical power OFF at source and switch any two leads on the motor junction box Do not interchange a power lead with the ground wire Severe damage or personal injury may result 3 All acce...

Страница 17: ...Downflo Oval DFO 2 4 and 3 6 14 This Page Intentionally Left Blank...

Страница 18: ...lications Periodically check the compressed air components and replace compressed air filters Drain moisture following the manufacturer s instructions With the compressed air supply ON check the clean...

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Страница 20: ...pinching Check that access covers are seated and seal properly Gaskets must be compressed to ensure an airtight seal 3 Turn electrical power and compressed air supply ON before starting unit Dust Dis...

Страница 21: ...Downflo Oval DFO 2 4 and 3 6 18 This Page Intentionally Left Blank...

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Страница 25: ...a forklift or pallet jack If a pallet is used the length of flexible hose may need to be shortened 1 Place 1 4 in diameter rope type sealant between the hopper flange and the drum cover mounting flang...

Страница 26: ...cludes a 5 gallon pail and provides easy access for dust removal and storage 1 Apply sealant to the hopper flange or the pail cover mounting plate flange toward the inside edge of the bolt pattern 2 F...

Страница 27: ...in the clean air plenum 1 Choose a convenient accessible location on or near the unit for mounting that provides the best visual advantage 2 Plug the pressure ports on the back of the gauge using two...

Страница 28: ...in the right hand side of the mounting bracket Tighten screws 3 On the back of the gauge remove four 6 32 x 5 16 in screws and plastic enclosure Set aside Add two jumper wires supplied by customer Re...

Страница 29: ...n 1 8 in NPT male adapter NPT male adapter static pressure tee dirty air plenum pressure tap location 1 8 in NPT male adapter plastic tubing two 1 8 in NPT adapters low pressure port high pressure por...

Страница 30: ......

Страница 31: ...Drop Off and Alarm The first two High Pressure Drop On and Low Pressure Drop Off control the filter cleaning system The third Alarm provides a relay output to activate an external alarm supplied by o...

Страница 32: ...ling screws supplied 5 Loosen the wing nut on the damper and adjust from 30 to 50 closed Backward Inclined 1 Apply sealant around the inside edge of the bolt pattern on the power pack outlet 2 Fasten...

Страница 33: ...omponents as described in Power Pack Assembly on Page 12 6 Attach the plenum silencer to the base using self threading bolts with washers 7 Route rigid or flexible conduit from the junction box on the...

Страница 34: ...g align bolt holes and fasten securely in place using hardware supplied with the power pack 5 Assemble the remaining power pack components as described in Power Pack 6 Apply sealant to the inside peri...

Страница 35: ...sion Resistant Inlet Collar 1 Remove the unit s front cover plate Remove excess sealant from opening 2 Apply 1 4 in sealant around the opening toward the inside edge of the bolt pattern 3 Align the ho...

Страница 36: ...to deliver heat to the large pulse valves This kit is customer installed and detailed installation instructions are provided 1 Install the power connection kit on the heat cable following the manufac...

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Страница 38: ...operly Check airflow in duct Adjust damper control until proper airflow is achieved and the blower motor s amp draw is within the manufacturer s rated amps Electrical circuit overload Check that the p...

Страница 39: ...d input power is present but output voltage to the solenoid is not replace the timer board See Solid State Timer Installation Solid State timer out of adjustment See Solid State Timer and Solid State...

Страница 40: ...keys to not work Improper operation Press and hold one of the three setpoint keys to use arrow keys Programming keys disabled Remove the Program Disable jumper from Terminals 3 and 4 on TB2 Cleaning...

Страница 41: ...Downflo Oval DFO 2 4 and 3 6 38 Service Notes Date Service Performed Notes...

Страница 42: ...39 Donaldson Company Inc Service Notes Date Service Performed Notes...

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Страница 44: ...se The terms of this warranty may be modi ed only by a special warranty document signed by a Director General Manager or Vice President of Donaldson Failure to use genuine Donaldson replacement parts...

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