SEM Fan Cyclone and Filter Operating instructions

Brand: SEM

Model: Fan Cyclone and Filter

Type: Operating instructions

Operation and Maintenance Manual

Air System Components

MAN-018 Rev 2 | Created 02/18/2020 | ECN: 00506

Covers Fan Cyclones: FC30, FC50, FC75, FC100, FC150

Covers Filters: FT24, FT25, FT40, FT64, FT88, FT125, FT140, FT164, FT188, FT240

Covers Airlocks: 529AL8-DON, 529AL10-DON, 529AL12-DON

For service, parts, and customer support, contact us:

SECURITY ENGINEERED MACHINERY

5 Walkup Drive • Westborough, MA 01581

[email protected]

1-508-366-1488

www.semshred.com

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Table of Contents

Safety Procedures .............................................................................................. 3

1.) Installation .................................................................................................... 4

1.1 General Installation Notes .................................................................................................... 4

1.2 Fan Cyclone and Filter Installation: ...................................................................................... 4

1.3 Estimated Current Draw Per Fan .......................................................................................... 4

2.) Operation ..................................................................................................... 5

3. Maintenance .................................................................................................. 5

3.1 Lubrication: .......................................................................................................................... 5

3.2 HEPA Filter Shaking and Changing HEPA Filters ................................................................... 5

3.3 Filter Tube Shaking and Changing Filter Tubes .................................................................... 6

4. Troubleshooting ............................................................................................. 9

5. Spare Parts ................................................................................................... 10

6. Units with an Airlock .................................................................................... 11

6.1 Introduction ........................................................................................................................ 11

6.2 Unpacking .......................................................................................................................... 13

6.3 Electrical Wiring ................................................................................................................. 14

6.4 Installation ......................................................................................................................... 15

6.5 Reducer .............................................................................................................................. 15

6.6 Electrical Connection .......................................................................................................... 16

6.7 Optional Equipment ........................................................................................................... 17

6.8 Preliminary Start-Up Check ................................................................................................ 17

6.9 Operational Checklist ......................................................................................................... 18

6.10 Troubleshooting ............................................................................................................... 19

7. Units with a Center Flow Magnet ................................................................. 20

7.1 Safety Warning and General Safety Practices .................................................................... 20

7.2 General Information ........................................................................................................... 20

7.3 Installation ......................................................................................................................... 21

7.4 Operating Instructions ........................................................................................................ 24

7.5 Maintenance and Cleaning Instructions ............................................................................. 24

8. Airlock Motor ............................................................................................... 26

8.1 Mounting Instructions ........................................................................................................ 26

8.2 Vent Plug Information ........................................................................................................ 27

8.3 Lubrication Schedule .......................................................................................................... 27

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Safety Procedures

Review this information prior to starting installation of any dust collection equipment. Safe and proper

installation and maintenance of the collection equipment, duct system, and any related accessory items

is crucial to a safe and efficient collection and ventilation system.

1. Refer to and review this operating and maintenance manual. Contact SEM customer care for any

electrical schematics, floor plans, or any other information about your system.

2. When installing or servicing this equipment, follow the recommendations of NFPA 70E, 2012,

“Handbook for Electrical Safety in the Workplace”.

3. Ensure that fire extinguishers are in the area and that they are of a type dedicated to, and

specifically rated for, the type of fire that could potentially be encountered in the collection

equipment, duct, or the general area. Consult NFPA 10.

4. Working in the area of the collection equipment, especially fans, may require noise protection.

Determine if this is appropriate and utilize hearing protection or take steps to control the sound

level such as vibration isolation, sound absorption, and sound barriers.

5. Personnel servicing the equipment and handling and disposing of the collected dust or debris

must dress appropriately and be equipped properly for the task at hand. This may include

protective clothing, gloves, breathing apparatus, or other PPE.

6. Empty the collection systems storage containers on a regular, pre-scheduled basis. Dispose of

collected dust according to all federal, state, and local laws and regulations.

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1.) Installation

1.1 General Installation Notes

1. Review the equipment and requirements for the task and ensure that all necessary equipment is

on hand to ensure a safe installation in accordance with OSHA regulations and guidelines. In

addition to the tools and PPE, this may include safety harnesses and lifting equipment.

2. Ensure there are no overhead hazards for cranes, fork-lifts, man-lifts, etc.

3. Electrical controls, components, and wiring must be as per the most current edition of the

National Electrical Code, NFPA 70, as well as all state and local regulations.

4. Electrical installation and connection must be performed by a licensed and qualified electrician

and in accordance with National Electrical Code, NFPA 70, as well as all state and local

regulations.

5. When installing or servicing this equipment, follow the recommendations of NFPA 70E, 2012,

“Handbook for Electrical Safety in the Workplace”.

1.2 Fan Cyclone and Filter Installation:

6. After setting up air system stand in its final location, put the fan in place according to the

supplied drawings and attach any reducers, airlock cone adapters, airlocks, duct, and hose.

7. Once electrical installation is complete, confirm proper motor rotation.

8. If filter crate has a stand included, set stand up according to location on floor plan. If not, it will

go on the air stand with the fan. Bolt in place and connect and reducers, airlock adapters,

airlocks, duct, and hose.

9. If equipped with a motorized filter shaker, confirm proper function via control panel.

• Current draw at 120/1/60 – 4.4 Amps

• Current draw at 230/1/60 – 2.2 Amps

• Current draw at 220/1/50 – 2.3 Amps

1.3 Estimated Current Draw Per Fan

Refer to motor plates on equipment for exact numbers

Fan

208/3/60

220/3/50

230/3/60

380-415 /3/50

460/3/60

FC30

10.6 A

9.8 A

9.6 A

6.1 A

4.8 A

FC50

16.7 A

15.4 A

15.2 A

9.7 A

7.6 A

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FC75

7.5

24.2 A

22.3 A

22 A

14 A

11 A

FC100

30.8 A

28.4 A

28 A

18 A

14 A

FC150

46.2 A

42.3 A

42 A

21 A

2.) Operation

1. Specific operation instructions are provided for each individual system.

2. Ensure an airtight seal is maintained between the filter and the drum or dust container if

applicable. Ensure drum or dust container is emptied regularly. It is recommended not to fill

more than two thirds of the drum or bin. Failure to do so may result in dust leakage.

3. If equipped with a manual filter shaker, be sure to shake the filter before and after every shift,

and after every eight hours of continuous use. Shake the filter by pulling the cords down for

approximately 30 seconds. If equipped with a motorized filter shaker, MCP will control this

process. Do not shake filter tubes while fan or disintegrator is operating.

3. Maintenance

3.1 Lubrication:

• 3 months – lubricate all moving parts of the shaker with light oil

• 6 months – lubricate shaker connecting linkage with light oil

• 3 years – lubricate shaker flange bearings with general purpose grease

3.2 HEPA Filter Shaking and Changing HEPA Filters

Shaking Filters

• The filters should be cleaned by shaking at the end of every eight hours of operation. On units

having a shaker crank, this crank should be turned briskly about 25 revolutions at each

shaking.

• Under no circumstances should the filter be shaken while the fan is in motion. This drives the

dust tighter into the filter, making it impossible to shake it out.

• Frequency of shaking depends upon the operation and the material being collected. A regular

cycle will have to be established as outlined for the cleaning of the dust storage container.

However, as a general rule, a filter should be shaken at least once a day (or once per shift).

• When shaking the filter no longer restores adequate suction, the filter should be replaced with

a new one. See Changing HEPA Filter below.

• Dust accumulated in the filter compartments from shaking the filters should be removed

whenever the filter is changed or whenever the dust storage container is emptied. Remove

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the filter frame from the collector and sweep the accumulated dust down into the opening

leading to the center of the cyclone separator. This dust may then be removed with the dust

accumulated in the storage container.

• Shaking of “C” units is done either with the shaker lever, where provided, or by grasping sides

of the bag and firmly shaking.

Changing HEPA Filter

1) Loosen fastenings and remove HEPA filter from enclosure.

2) Place frame upside down (handles down) on a flat surface.

3) Remove screws in dimples at end of frame (if equipped).

4) Lift out the inner (bottom) half of the frame.

5) Discard old filter material and clean dust from frame angles.

6) Spread a new filter into the upside-down top frame making sure that it fills the entire frame

completely to its edges with no gaps.

7) Invert the bottom (inner) half of the filter frame. Place it on top of the filter material and push it

straight down until the dimples snap in place or the screw holes line up.

Important: The flange on the bottom half of the frame should compress the filter material

against the top half of the frame. Do not tuck the filter material into the channel of the bottom

frame. It must be squeezed between the two frames in order to seal effectively or it will leak

dust at the edges.

Do not place anything on top of the filter. Suction will be reduced in proportion to the amount

of surface area covered up.

3.3 Filter Tube Shaking and Changing Filter Tubes

Filter Tube Shaking

• The collected dust that accumulates on the inside surface of the filter tubes must be shaken off

periodically. The amount of dust that is collected determines the frequency of shaking.

Generally, a shaking period of 15-30 seconds at the end of each shift is sufficient to recondition

the filter tubes.

• DO NOT shake filter tubes while the dust collection fan is operating. This will reduce filter

performance by plugging up the filter tubes and cause fine dust to leak through the filter fabric.

• DO NOT operate the shaker continuously. Excessive shaking will drastically reduce the life of the

shaker drive linkage and the filter tubes.

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• When shaking the filter tubes no longer restores adequate suction, the filter tubes should be

replaced with new ones. See Filter Tube Replacement in this section.

• Powered shaking can be controlled through the Shaker Start button located on the master

control panel.

• The dust collection drum(s) or hopper should be checked regularly to establish a pattern that

will provide for it being emptied when it becomes approximately two thirds full of collected

material. Allowing the dust collection drum(s) or hopper to overfill can result in a plugged

hopper and/or filter tubes, which can seriously reduce the unit's air handling capacity (CFM) and

filtration efficiency.

Note: If filter is located over a container and used an airlock there is no need to empty.

However, it is hopper should be checked regularly to be sure system is working properly.

• Collected dust should be disposed of properly, especially in cases where the dust being collected

is rated as being either hazardous or toxic. In such case, established governmental disposal

regulations must be strictly obeyed.

Filter Operation and Maintenance

1) Make absolutely certain that all electrical power to the filter unit is disconnected before

servicing or replacing filter components, especially when the fan motor and/or shaker are

involved.

2) The dust collector electrical system, including wiring, controllers, overload protection, and

disconnect must be installed in accordance with the National Electrical Code, Articles #310 and

#430, or as specified by local code.

3) In order for the filter to function properly, the fan must be checked visually to ensure rotation is

in the proper direction as shown by the arrows on the fan housing. Rotation can be checked by

viewing the fan wheel, the cooling fan on the back of the motor, or the motor shaft behind the

fan housing. Reverse rotation will not reverse airflow direction, but will greatly reduce air

volume, suction (S.P.), dust capture, and separation efficiency.

4) It is EXTREMELY IMPORTANT that an airtight seal be maintained at all times on the dust storage

container. On "01'', "02", 1 RC, and RCS units, this means that an airtight seal between the drum

cover(s) and drum(s), and hose connections be maintained. On hopper models, the slide gate

must be tightly closed. On pull-through models, failure to maintain the airtight seal in any of the

above mentioned cases will provide an air entry in this part of the system that will deplete the

required exhaust air volume (CFM) for the dust collection system. Consequently, dust may not

be properly collected at the various collection points or may even build up in the ductwork.

5) Employees should be warned not to any burning or glowing objects into the dust collection

hood.

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Filter Tube Replacement

1) Shake filters and allow dust to settle.

2) Disconnect all electrical power to the dust collector.

3) Follow all local safety codes and/or OSHA standards for breathing apparatus, if required.

4) Remove access panel, to gain access to the filter tubes, if so equipped.

5) Remove existing filter tubes, being careful not to stir up any more dust than necessary. Clean

out bag-house, as required.

6) Install new filter tubes, as illustrated in the three-step procedure below. Make sure filter tubes

are straight, not twisted, and properly connected to the shaker linkage. Make sure filter tube

snap ring cuff is seated properly in the bag-plate.

7) Reconnect all electrical power to the dust collector.

8) Dispose of dirty filter tubes, following all local, state, and federal regulations.

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4. Troubleshooting

PROBLEM: Inadequate Airflow and Suction

POSSIBLE CAUSE

SOLUTION

Fan running backwards

Have electrician reverse motor direction.

Drum cover(s) not clamped or sealed properly to

drums(s).

Hopper slide gate not closed. (Pull-through

models only)

Clamp drum cover(s) on drum properly. Obtain a

55-gallon drum with a uniform rim (not bent or

dented). Tightly close slide gate on hopper.

Filters plugged

Review your filter shaking procedures.

See section 3.3 Filter Tube Shaking for

instructions. See Problem: High Filter Resistance

in this section below.

Ductwork or cyclone plugged

Visually check ductwork and cyclone interior, and

clean as required.

PROBLEM: Electrical Overload

POSSIBLE CAUSE

SOLUTION

Branch circuit fuses incorrect size

Size fuses for branch circuit protection per NEC

430-52 and Table 430-152.

Motor starter heater elements incorrect size

Size heater elements according to motor

nameplate full load amps, per NEC 430-32.

Motor starter, disconnect, or wiring undersized

Size according to National Electrical Code Article

430.

Loose connection

Check all connection points.

PROBLEM: Excessive Dust Bleed-Through

POSSIBLE CAUSE

SOLUTION

Air-to-filter ratio too high (CFM/sq.ft.)

Add more filter area or get a bigger filter/smaller

fan.

Shaker operating while dust collection fan is

running

Shaker should only be operating when dust

collection fan is off.

Ruptured filter tube, or improperly in-stalled

filter tube cuff in bag-plate

Replace ruptured filter tube. Reposition filter

tube cuff in bag-plate.

Drum cover hose not caulked (filters only)

Caulk hose top and bottom.

Dust storage drum(s) or bin overfilled and backed

up into cyclone (filters only)

Empty dust storage container. Check cyclone

interior at the same time to see if the cyclone is

plugged up with dust. Clean out as required.

Too much fine dust for the cyclone to efficiently

precipitate

Add an after-filter.

Aerodynamically shaped dust particles (e.g

paper)

Contact SEM

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Something caught in cyclone disturbing smooth

airflow

Check visually through bottom cyclone discharge

and top air outlet for anything foreign to the

construction or materials of the cyclone. Check

for dents in cyclone.

PROBLEM: High Filter Resistance

POSSIBLE CAUSE

SOLUTION

Filter tubes plugged

Shake filter tubes. If airflow is not restored, filter

replacement may be necessary.

See 3.3 Filter Tube Shaking.

Shaker operating while fan is running

Operate shaker only when fan is stopped.

Shaker control not operating

Review wiring diagram and troubleshooting sheet

shipped with control.

Not shaking filter tubes often enough, or long

enough

Increase shaking frequency and, only if necessary,

increase shaking time. Time should rarely exceed

30 seconds.

Air-to-filter ratio too high (CFM/sq.ft.)

Add more filter area or get a larger filter.

Dust bin or drum(s) overfilled and backed up into

filter tubes

Empty dust bin or drum(s). Clean dust out of filter

tubes where it has backed up into them.

5. Spare Parts

1. Filter Tubes: Contact SEM

2. HEPA Filters: Contact SEM

3. Maintenance tool kit: 553TKZ4

4. Spare Drum with Viewing Window: 756D1DRUM

5. Drum Dolly: 757DRDOC

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6. Units with an Airlock

6.1 Introduction

• AN Rotary Valves are used as airlocks or feeders on conveying systems and dust collection

equipment. AN rotary airlocks allow continuous evacuation of particulate from a dust collector,

while providing an effective seal.

• The AN is a six-blade valve with standard neoprene flexible tips designed for most nuisance dust

discharge requirements for models AN8 through 16.

• Misuse or modification of this equipment may result in personal injury. Do not misuse or

modify.

Operation Overview

Rotary valves are used as an airlock and a metering device in dust control applications. When used as an

airlock, an effective seal between the valve’s inlet and outlet is maintained while allowing dust or

material to pass through. Comparatively, the airlock works along the same line as a revolving door on a

building—an effective seal is maintained while people are allowed to pass through.

During normal operation, the valve rotor rotates inside the housing at 22-rpm. Product or dust enters

the inlet flange and falls into each rotor pocket as it rotates. The material is discharged by gravity as

each rotor pocket passes the outlet flange.

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• Rotating blades can cause serious injury.

• Keep hands, feet, and loose clothing away from both inlet and outlet openings to avoid injury or

damage when valve is operating.

• Both the inlet and outlet of the rotary valve should be attached to an enclosure or have a guard

in place to prevent hands, feet, or loose clothing from entering the valve.

• Operate rotary valve only when all guards are correctly and securely in place.

• It is not unusual for rotary valves to be operated from a remote location, so rotary valves may

start unexpectedly. LOCK OUT power before servicing any rotary valves.

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6.2 Unpacking

Inspection on Arrival

1. Inspect unit on delivery.

2. Report any damage to the delivery carrier.

3. Request a written inspection report from the shipping company to substantiate claim.

4. File claims with the delivery carrier.

5. Compare unit received with description of product ordered.

6. Report incomplete shipments to the delivery carrier and your SEM representative.

7. Remove crates and shipping straps. Remove loose components and accessory packages before

lifting unit from truck.

Installation Codes and Procedures

Safe and efficient operation of the unit depends on proper installation.

Authorities with jurisdiction should be consulted before installing to verify local codes and installation

procedures. In the absence of such codes, install unit according to the National Electric Code, NFPA No.

70-latest edition and NFPA 91 (NFPA 654 if combustible dust is present).

Note:

• A qualified installation and service agent must complete installation and service of this

equipment.

• All shipping materials, including shipping covers, must be removed from the unit prior to or

during unit installation. Failure to remove shipping materials from the unit will compromise unit

performance.

• Inspect unit to ensure all hardware is properly installed and tight prior to operating collector.

Hoisting Information

Suggested Tools and Equipment

• Clevis Pins and Clamps

• Crane or Forklift

• Drift Pins

• Drill and Drill Bits

• End Wrenches

• Socket

• Large Crescent Wrench

• Lifting Slings

• Pipe Sealant

• Pipe Wrenches

• Screwdrivers

• Wrenches

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WARNING:

• Failure to lift the collector correctly can result in severe personal injury or property damage.

• Do not lift unit by the door handle.

• Use appropriate lifting equipment and adopt all safety precautions needed for moving and

handling the equipment.

• A crane or forklift is recommended for unloading, assembly, and installation of the collector.

• Location must be clear of all obstructions, such as utility lines or roof overhang.

• Use all lifting points provided.

• Use clevis connectors, not hooks, on lifting slings.

• Check the specification control drawing for weight and dimensions of the unit and components

to ensure adequate crane 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 accessories separately, and assemble after unit is in place.

• Use drift pins to align holes in section flanges during assembly.

6.3 Electrical Wiring

• Electrical installation must be performed by a qualified electrician and comply with all applicable

national and local codes.

• Always 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.

• All electrical wiring and connections, including electrical grounding, should be made in

accordance with the National Electric Code, NFPA No. 70-latest edition. Check local ordinances

for additional requirements that apply.

• The appropriate wiring schematic and electrical rating must be used. See unit’s rating plate for

required voltage.

• If the unit is not furnished with a factory-mounted disconnect, an electric disconnect switch

having adequate amp capacity shall be installed in accordance with Part IX, Article 430 of the

NEC, NFPA No. 70-latest edition. Check unit’s rating plate for voltage and amperage ratings.

• Refer to the wiring diagram for the number of wires required for main power wiring and remote

wiring.

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6.4 Installation

Warning: Rotating blades can cause serious injury.

• Turn power off and lock out electrical sources before performing service.

• Keep hands, feet, and loose clothing away from both inlet and outlet openings to avoid injury or

damage when valve is operating.

• Use a soft probe, NOT your hand, to rotate the valve rotor when inspecting the pockets and

wipers of the rotor.

1. Remove the protective plastic wrap, hardboard inlet cover, and flange gaskets shipped inside

the valve.

2. Inspect the valve pockets for foreign material and check that the wipers are securely fastened to

the rotor backup plates.

3. Determine the proper position required for the rotary airlock. Allow clearance for electrical

connections and future maintenance. Companion flanges must be true and square to rotary

valve flanges and of sufficient size to support valve weight. Otherwise additional valve support

will be required.

4. Place the sponge-rubber flange gasket on the airlock’s top flange.

5. Fasten the rotary valve to the dust collector’s hopper flange using 3/8”-16 bolts and washers.

Tighten hardware alternately in steps. Avoid over tightening.

6. Install the discharge adapter to the rotary valve outlet flange using 3/8”-16 bolts and washers.

Tighten hardware alternately in steps. Avoid over tightening.

7. Connect hose from discharge adapter to identical adapter bolted to briquettor cover or

compactor.

6.5 Reducer

Check reducer oil level before operating the valve.

1. Fill the reducer to the level indicated with oil of the proper viscosity. Refer to the reducer

installation lubrication and operation instructions provided

with the valve for oil viscosity and oil change recommendations. In the absence of this

information, use Mobil SHC 634 synthetic lubricant for operating ambient temperature range of

-30° C to 125° C.

2. Check that vent caps, drain, and fill plugs are installed and secure.

3. Consult the petroleum supplier for lubricants that are acceptable to the Food and Drug

Administration and other regulating agencies when installing in food and drug industries,

including animal foods.

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6.6 Electrical Connection

• Rotating blades can cause serious injury.

• Turn power off and lock out electrical power sources before performing service or maintenance

work.

• Standard valve motors are wired for 230/460-Volt, 3-phase, 60Hz operation.

1. Install a customer-supplied motor starter with a low voltage control circuit for the valve motor.

2. Using the wiring diagram supplied, wire the valve motor and motor starter. Use appropriate

wire gauge for the rated amp load as specified by local codes.

3. Turn the valve motor ON then OFF to check for proper rotation by referencing the rotation

arrow located on the valve.

Warning: Do not look into fan outlet to determine rotation. Material may unexpectedly be discharged

from the valve. View the valve rotation through the back of the motor or from the front of the drive

guard.

To reverse rotation, three-phase power supply:

1. Turn electrical power OFF at source and switch any two leads on the output-side of the motor

starter.

2. Do not interchange a power lead with the ground wire. Severe damage or personal injury may

result.

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6.7 Optional Equipment

Wipers

• EPDM, polyurethane, white neoprene, silicone & BUNA-N wipers.

• Extended clearance wipers for AN8 through AN16.

Drives

• Motor and chain-driven gear reducer with speed range of 16 to 22 rpm.

• TEFC and explosion proof motors available.

6.8 Preliminary Start-Up Check

Instruct all personnel on safe use and maintenance procedures.

Warning

• Rotating blades can cause serious injury.

• Turn power off and lock out electrical source before performing service or maintenance work.

• Keep hands, feet, and loose clothing away from both inlet and outlet openings to avoid injury or

damage when valve is operating.

• Electrical installation must be performed by a qualified electrician and comply with all applicable

national and local codes.

• Check that the valve is clear and free of all debris before starting.

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

application.

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1. Check all electrical connections for tightness and contact.

2. Check for and remove all loose items in or near the inlet and outlet of the unit.

3. Check that all remote controls are wired into the control system and all service switches are in

the OFF position.

4. Check that all optional accessories are installed properly and secured.

5. Check the oil level in the reducer and that the vent plugs are in place and secure.

6. Check that the drive guard is in place and secure.

7. Turn power (service switch) ON at source.

8. Turn the rotary valve motor ON then OFF to check for proper rotation by referencing the

rotation arrow located on the valve endplate.

Warning:

• View the valve rotation through the back of the motor or from the front of the drive guard.

• To reverse rotation, three-phase power supply: turn electrical power OFF at source and

switch any two leads on the output-side of the rotary valve motor starter.

• Do not interchange a power lead with the ground wire. Severe damage or personal injury

may result.

9. Check that valve operation does not disrupt upstream or downstream equipment.

10. Operate valve for 10 to 15 minutes and inspect housing for hot spots or unusual noises.

11. Turn upstream equipment ON to run product through the valve. Continue to inspect housing for

hot spots or noises.

Note: If the valve discharges into a conveying system, the conveying system should also be

operating to prevent overfilling the conveying system.

12. Check motor amp draw to verify that valve is not being overloaded.

13. Check product flow-rate if valve is used as a metering device.

6.9 Operational Checklist

1. Monitor the physical condition of the valve 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.

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.

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6.10 Troubleshooting

Drive Components and Lubrication, All Models

1. Periodically check drive components for proper operation. Follow the motor and reducer

manufacturers’ instructions for maintenance.

2. Check gear reducer oil level and replace at regular intervals.

3. Check the drive chain for proper alignment and tension and adjust as needed.

4. Lubricate the chain at least once a month and flanged bearings once every other month with a

high grade, lithium-base grease for applications under 175° F. For higher temperature or

corrosive vapor applications, consult your sales representative to obtain specific lubrication

instructions.

Wiper and Seal Replacement

1. When practical, remove the valve from the equipment and place on a workbench for

disassembly.

2. Remove the chain guard, chain, and valve sprocket.

3. Loosen setscrews and remove collars on flanged bearings.

4. Unscrew fasteners and remove end plate opposite the drive end.

5. Remove valve rotor assembly.

6. Unscrew fasteners and remove wiper backup plates from each rotor pocket.

7. Remove wipers and shaft seals.

8. Install new wipers and shaft seals.

9. Reassemble valve in reverse order and replace the valve sprocket, chain, and chain guard.

Note: Check that the rotor assembly is centered in the valve housing.

10. Reinstall rotary valve to the equipment.

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7. Units with a Center Flow Magnet

7.1 Safety Warning and General Safety Practices

A strong magnetic current is present with this separation unit. Items adversely affected by such a

magnetic current should not come in contact with it.

• Ensure air system is turned off before opening.

• A strong magnet current is present at all times with this unit. When removing magnet from its

shell for cleaning, use care not to get the magnet close to ferrous metal.

• Only trained personnel should be permitted to perform maintenance and repair of the unit.

7.2 General Information

The CFM winch is a wall mount winch designed to lift the magnetic core to ease the cleaning of the

center flow magnet. For existing systems, installation can be done by SEM trained service technicians

during a preventative maintenance and installation instructions are available upon request.

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SEM Fan Cyclone and Filter Operating instructions

SEM Fan Cyclone and Filter Operating instructions

SEM Fan Cyclone and Filter Operating instructions

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