AGI Centrifugal Fan (General Industries) User manual

Brand: AGI

Model: Centrifugal Fan (General Industries)

Type: User manual

Read this manual before using product. Failure to

follow instructions and safety precautions can

result in serious injury, death, or property

damage. Keep manual for future reference.

Part Number: 8210-30025 R1

Revised: February 2023

Original Instructions

Centrifugal Fan

Aeration Fan

Installation, Operation, and Maintenance Manual

This manual applies to:

General Industrial Series: 20, 30, 45



(ABOVE INLET)



This product has been designed and manufactured to meet general engineering standards. Other local

regulations may apply and must be followed by the operator. All personnel must be trained in the correct

operational and safety procedures for this product. Use the sign-off sheet below to record initial and periodic

reviews of this manual with all personnel.

Date Employee Name and Signature Employer Name and Signature

CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 3

CONTENTS

1. Introduction ............................................................................................................................................ 5

1.1 General Description................................................................................................................... 5

1.2 Serial Number Location............................................................................................................. 5

2. Safety....................................................................................................................................................... 6

2.1 Safety Alert Symbol and Signal Words...................................................................................... 6

2.2 General Safety Information....................................................................................................... 6

2.3 Fan Safety .................................................................................................................................. 7

2.4 Drives and Lockout/Tagout Safety ............................................................................................ 7

2.4.1 Electric Motor Safety.................................................................................................. 8

2.5 Personal Protective Equipment................................................................................................. 8

2.6 Safety Equipment ...................................................................................................................... 9

2.7 Safety Decals ............................................................................................................................. 9

2.7.1 Decal Installation/Replacement................................................................................. 9

2.7.2 Safety Decal Locations and Details ............................................................................ 9

3. Pre-Installation ..................................................................................................................................... 11

3.1 Check Shipment....................................................................................................................... 11

3.2 Handling the Fan ..................................................................................................................... 11

3.3 Storing the Fan Before Installing............................................................................................. 11

4. Installation ............................................................................................................................................ 12

4.1 Installation Safety.................................................................................................................... 12

4.2 Elevated Fans........................................................................................................................... 12

4.3 Slab Mounted Fans.................................................................................................................. 12

4.4 Vibration Isolators ................................................................................................................... 13

4.5 Install the V-Belt Drive ............................................................................................................ 13

4.6 Tension the V-Belt ................................................................................................................... 14

4.7 Install the Coupling.................................................................................................................. 14

4.8 Align the Coupling ................................................................................................................... 14

4.9 Ducting Requirements............................................................................................................. 16

5. Operation .............................................................................................................................................. 17

5.1 Operation Safety ..................................................................................................................... 17

5.2 Air Pressure and Suction ......................................................................................................... 17

5.3 Start-Up and Break-In.............................................................................................................. 17

5.4 Bearings Surface Temperature................................................................................................ 18

5.5 Emergency Stop....................................................................................................................... 18

5.6 Shutdown ................................................................................................................................ 19

5.7 Storage..................................................................................................................................... 19

5.7.1 Bearings .................................................................................................................... 19

6. Maintenance ......................................................................................................................................... 20

6.1 Maintenance Safety ................................................................................................................ 20

6.2 Maintenance Schedule............................................................................................................ 20

6.3 Visually Inspect the Centrifugal Fan........................................................................................ 21

6.4 Cleaning the Fan Blade and Housing ...................................................................................... 21

6.5 Servicing and Part Replacement ............................................................................................. 21

6.5.1 Fan Wheel Replacement .......................................................................................... 21

6.5.2 Fan Wheel/Propeller Balance .................................................................................. 23

CENTRIFUGAL FAN – AERATION FAN

4 8210-30025 R1

6.5.3 Replacement Parts ................................................................................................... 23

6.6 V-Belt Drive Maintenance ....................................................................................................... 24

6.7 Motor Bearings Maintenance ................................................................................................. 24

6.7.1 Lubrication................................................................................................................ 24

7. Troubleshooting.................................................................................................................................... 27

8. Appendix ............................................................................................................................................... 30

8.1 Torque Recommendations ...................................................................................................... 30

9. Warranty ............................................................................................................................................... 31

8210-30025 R1 5

1. Introduction

Thank you for your purchase. Follow the instructions in this manual for safe use of this centrifugal fan.

Following proper operation and maintenance will help to keep the centrifugal fan running in optimal

condition.

Keep this manual handy for frequent reference and to review with new personnel. A sign-off form is

provided on the inside front cover for your convenience. If any information in this manual is not

understood or if you need additional information, please contact AGI or your representative for

assistance.

This manual should be regarded as part of the equipment.

1.1. General Description

The AGI Airlanco propellers are dynamically balanced. Fully assembled fans are test run at operating speeds to

check the entire assembly for conformance to AGI Airlanco vibration limits.

1.2. Serial Number Location

The serial number location for your centrifugal fan is shown in the figure below. Have the serial number ready

when ordering parts or requesting service or other information. Record information in the table below for easy

reference.

Model Number

Serial Number

Date Received

CENTRIFUGAL FAN – AERATION FAN 1. INTRODUCTION

6 8210-30025 R1

2. Safety

2.1. Safety Alert Symbol and Signal Words

This safety alert symbol indicates important safety messages in this manual. When you see

this symbol, be alert to the possibility of injury or death, carefully read the message that

follows, and inform others.

Signal Words: Note the use of the signal words DANGER,WARNING,CAUTION, and NOTICE with the safety

messages. The appropriate signal word for each message has been selected using the definitions below as a

guideline.

Indicates an imminently hazardous situation that, if not avoided, will result in serious injury or

death.

Indicates a hazardous situation that, if not avoided, could result in serious injury or death.

Indicates a hazardous situation that, if not avoided, may result in minor or moderate injury.

Indicates a potentially hazardous situation that, if not avoided, may result in property damage.

2.2. General Safety Information

Read and understand all safety instructions, safety decals, and manuals and follow them when operating or

maintaining the equipment.

• Owners must give instructions and review the information initially and annually with

all personnel before allowing them in the work area. Untrained users/operators

expose themselves and bystanders to possible serious injury or death.

• Use for intended purposes only.

• Modification of the centrifugal fan in any way without written permission from the manufacturer is not

covered by the warranty.

• Follow a health and safety program for your worksite. Contact your local occupational health and safety

organization for information.

• Follow applicable local codes and regulations.

2. SAFETY CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 7

2.3. Fan Safety

• Keep away from fan impeller/blade; high suction can pull a

person toward the inlet. Contact with an unguarded

impeller/blade will cause severe injury.

• Keep the inlet screen in place at all times.

• Remove foreign material from the fan inlet before operating.

• Do not operate the fan if there is excessive vibration or noise.

• When the power is locked out, fans can still be dangerous

because of potential “windmilling.” Always block the

impeller/blade before working on any moving parts.

2.4. Drives and Lockout/Tagout Safety

Inspect the power source(s) before using and know how to shut down in an emergency.

Whenever you service or adjust your equipment, make sure you shut down your power

source and follow lockout and tagout procedures to prevent inadvertent start-up and

hazardous energy release. Know the procedure(s) that applies to your equipment from the

following power sources.

For example:

WARNING

• De-energize, block, and dissipate all sources of hazardous energy.

• Lock out and tag out all forms of hazardous energy.

• Ensure that only 1 key exists for each assigned lock, and that you are the only one that holds that key.

• After verifying all energy sources are de-energized, service or maintenance may be performed.

• Ensure that all personnel are clear before turning on power to equipment.

For more information on occupational safety practices, contact your local health and safety organization.

CENTRIFUGAL FAN – AERATION FAN 2. SAFETY

8 8210-30025 R1

2.4.1 Electric Motor Safety

Power Source

• Electric motors and controls shall be installed and serviced by

a qualified electrician and must meet all local codes and

standards.

• Do not modify the magnetic starter. This component provides

overload and under-voltage protection.

• Motor starting controls must be located so that the operator

has full view of the entire operation.

• Locate main power disconnect switch within reach from

ground level to permit ready access in case of an emergency.

• Motor must be grounded.

• Guards must be in place and secure at all times.

• Ensure electrical wiring and cords remain in good condition;

replace if necessary.

SERVICE DISCONNECT

OFF

Lockout

• The main power disconnect switch should be in the locked position during shutdown or

whenever maintenance is performed.

• In the event of unexpected fan shutdown, the fan can be reset using the main power switch

located on the fan or using a reset button when equipped.

2.5. Personal Protective Equipment

The following Personal Protective Equipment (PPE) should be worn when assembling, operating or maintaining

the equipment.

•Safety Glasses

Wear safety glasses at all times to

protect eyes from debris.

•Steel-Toe Boots

Wear steel-toe boots to protect feet from

falling debris.

•Coveralls

Wear coveralls to protect skin.

•Work Gloves

Wear work gloves to protect your hands

from sharp and rough edges.

•Dust Mask

Wear a dust mask to prevent breathing

potentially harmful dust.

•Hearing Protection

Wear ear protection to prevent hearing

damage.

2. SAFETY CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 9

2.6. Safety Equipment

The following safety equipment should be kept on site.

•Fire Extinguisher

Provide a fire extinguisher for use in case

of an accident. Store in a highly visible

and accessible place.

•First-Aid Kit

Have a properly-stocked first-aid kit

available for use should the need arise,

and know how to use it.

2.7. Safety Decals

• Keep safety decals clean and legible at all times.

• Replace safety decals that are missing or have become illegible. See decal location figures that follow.

• Replaced parts must display the same decal(s) as the original part.

• Replacement safety decals are available free of charge from your distributor, dealer, or factory as applicable.

2.7.1 Decal Installation/Replacement

1. Decal area must be clean and dry, with a temperature above 50°F (10°C).

2. Decide on the exact position before you remove the backing paper.

3. Align the decal over the specified area and carefully press the small portion with the exposed sticky backing

in place.

4. Slowly peel back the remaining paper and carefully smooth the remaining portion of the decal in place.

5. Small air pockets can be pierced with a pin and smoothed out using the decal backing paper.

2.7.2 Safety Decal Locations and Details

Replicas of the safety decals that are attached to the centrifugal fan and their messages are shown in the figure

(s) that follow. Safe operation and use of the centrifugal fan requires that you familiarize yourself with the

various safety decals and the areas or particular functions that the decals apply to, as well as the safety

precautions that must be taken to avoid serious injury, death, or damage.

CENTRIFUGAL FAN – AERATION FAN 2. SAFETY

10 8210-30025 R1

Figure 1. Safety Decal Locations



(ABOVE INLET)

AGI AIRLANCO DECAL





0009140)

(ON TOP

OF BELT GUARD)

Table 1. Safety Decal Details

To prevent serious injury or death:

• Keep body, hair, and clothing away from rotating

pulleys, belts, chains, and sprockets.

• Do not operate with any guard removed or

modified. Keep guards in good working order.

• Shut off and lock out power source before

inspecting or servicing machine.

ENTANGLEMENT HAZARD

WARNING

10009205

CUTTING HAZARD

To prevent serious injury, keep away

from blade when fan is operating.

Shut off and lockout or disconnect power

before inspecting or servicing.

Keep guards in place while operating.

WARNING

10008934

AIR-FLOW

10008890

10009140

10008894

2. SAFETY CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 11

3. Pre-Installation

Before continuing, ensure you have completely read and understood this manual’s

Safety section, in addition to the safety information in the section(s) below.

3.1. Check Shipment

Inspect the centrifugal fan and accessories on receipt to ensure that all items have arrived and that none are

damaged.

Turn the wheel by hand to see that it rotates freely and does not bind. If dampers or shutters are provided,

check these accessories for free operation of all moving parts.

FOB factory shipping terms require that the receiver be responsible for inspecting the equipment upon arrival.

Note damage or shortages on the Bill of Lading and file any claims for damage or loss in transit. AGI Airlanco will

assist the customer as much as possible; however, claims must be originated at the point of delivery.

3.2. Handling the Fan

Lift the fan by the base, mounting supports, or lifting locations. Never lift a fan by the wheel, motor, motor

bracket, housing inlet, outlet, or any fan part not designed for lifting. A spreader should always be used to avoid

damage.

Be sure to follow all local health and safety codes when moving heavy equipment.

3.3. Storing the Fan Before Installing

Fans and accessories should be stored in a clean, dry location to prevent rust and corrosion of steel

components.

For outdoor storage, protection should be provided. Cover the inlet and outlet to prevent accumulation of dirt

and moisture. Cover the motors with waterproof material.

Check dampers for free operation and lubricate moving parts prior to storage. Inspect the stored unit

periodically.

Rotate the wheel by hand every two to four weeks to redistribute grease on internal bearing parts.

CENTRIFUGAL FAN – AERATION FAN 3. PRE-INSTALLATION

12 8210-30025 R1

4. Installation

Before continuing, ensure you have completely read and understood this manual’s

Safety section, in addition to the safety information in the section(s) below.

4.1. Installation Safety

• Do not take chances with safety. The components can be large, heavy, and hard to handle.

Always use the proper tools, rated lifting equipment, and lifting points for the job.

• Always have two or more people installing the centrifugal fan.

• Make sure you have sufficient lighting for the work area.

• The equipment shall be installed in accordance with applicable local codes and regulations.

• All installation and servicing operations are to be carried out by qualified technicians.

• Tighten all fasteners according to their specifications. Do not replace or substitute bolts,

nuts, or other hardware that is of lesser quality than the hardware supplied by the

manufacturer.

4.2. Elevated Fans

When an elevated or suspended structural steel platform is used, it must have sufficient bracing to support the

unit load and prevent side sway. The platform should be of welded construction to maintain permanent

alignment of all members.

4.3. Slab Mounted Fans

A concrete foundation is preferable for installing floor-mounted fans. The mass of the base must maintain the

fan/driver alignment, absorb normal vibration, and resist lateral loads.

When installing the fan on a concrete pad the following general requirements apply:

• The concrete surface must be flat and level.

• The weight of the slab should be two to three times the weight of the rotating assembly, including the

motor.

• The foundation requires firmly anchored fasteners such as the anchor bolts shown below. Hammer-drilled

expansion fasteners can be used in less demanding applications.

• The overall dimensions of the concrete base should extend at least six inches beyond the base of the fan.

• Provide adequate drainage to protect the fan.

• Move the fan to the mounting location and lower it over the anchor bolts, leveling the fan with shims

around the bolts. Fasten the fan securely.

• When grout is used: Shim the fan at least 3/4-inch from the concrete base.

• When isolation is used: Check the AGI Airlanco certified drawing for installation instructions.

4. INSTALLATION CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 13

Figure 2. Slab Mounted Fan

Item Description

1Fan Pedestal

2 Fan Base

3Anchor Bolt

4Shim and Grout

4.4. Vibration Isolators

Where vibration isolators are used, consult the AGI Airlanco certified drawing for proper location and

adjustment.

4.5. Install the V-Belt Drive

1. Remove all foreign material from the fan and motor shafts.

2. Coat shafts with machine oil for easier mounting.

3. Mount the belt guard back plate at this time if partial installation is required prior to sheave mounting.

4. Mount sheaves on shafts after checking sheave bores and bushings for nicks or burrs. Avoid using force. If

resistance is encountered, lightly polish the shaft with crocus cloth until the sheave slides on freely.

5. Tighten tapered bushing bolts sequentially so that equal torque is applied to each.

6. Adjust the motor on its base to a position closest to the fan shaft.

7. Never pry the belts into place. On AGI Airlanco packaged fans, sufficient motor adjustment is provided for

easy installation of the proper size belts.

8. Adjust sheaves and the motor shaft angle so that the sheave faces are in the same plane. Check this by

placing a straightedge across the faces of the sheaves.

CENTRIFUGAL FAN – AERATION FAN 4. INSTALLATION

14 8210-30025 R1

Note

Any gap between the edge and sheave faces indicates misalignment.

Important

This method in step Step 8 is only valid when the width of the surface between the belt edge and

the sheave face is the same for both sheaves. When they are not equal, or when using adjustable-

pitch sheaves, adjust so that all belts have approximately equal tension. Both shafts should be at

right angles to the center belt.

4.6. Tension the V-Belt

1. Check belt tension with a tensioning gage and adjust using the motor slide base.

Note

Excess tension shortens bearing life while insufficient tension shortens belt life and can reduce fan

performance and may cause vibration. The lowest allowable tension is that which prevents slippage

under full load. Belts may slip during startup, but slipping should stop as soon as the fan reaches full

speed. For more precise tensioning methods, consult the drive manufacturer's literature.

2. Recheck setscrews, rotate the drive by hand and check for rubbing, then complete the installation of the

belt guard.

3. Belts tend to stretch somewhat after installation. Recheck tension after several days of operation. Check

sheave alignment as well as setscrew and/or bushing bolt tightness.

4.7. Install the Coupling

Most AGI Airlanco fans are shipped with the coupling installed. In cases where the drive is assembled after

shipping, install the coupling as follows:

1. Remove all foreign material from fan and motor shafts and coat with machine oil for easy mounting of

coupling halves.

2. Mount the coupling halves on each shaft, setting the gap between the faces specified by the manufacturer.

Avoid using force. If mounting difficulty is encountered, lightly polish the shaft with crocus cloth until the

halves slide on freely.

4.8. Align the Coupling

Coupling alignment should be checked after installation and prior to start up. Alignment is set at the factory, but

shipping, handling and installation can cause misalignment.

1. Align the coupling to within the manufacturer's limits for parallel and angular misalignment, see Figure 3. A

dial indicator can also be used for alignment where greater precision is desired.

2. Adjust the shaft angle by moving the motor. Use foot shims to change motor shaft height. Do not move the

fan shaft or bearing.

3. When correctly aligned, install the flexible element and tighten all fasteners in the coupling and motor base.

Lubricate the coupling if necessary. See the manufacturer’s installation and maintenance supplement in the

shipping envelope for proper coupling lubrication and alignment tolerances.

4. INSTALLATION CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 15

Note

Fans with wheel sizes 40" and larger are normally shipped with the flexible element removed to

minimize potential for damage.

4. Recheck alignment and gap after a short period of operation and recheck the tightness of all fasteners in the

coupling assembly.

Table 2. Coupling Alignment

Item Description

1Shaft

2Coupling

3Straight Edge (Parallel Alignment)

4Steel Wedge (Angular Alignment)

AUse feeler gage to measure alignment

Figure 3. Coupling Alignment

CENTRIFUGAL FAN – AERATION FAN 4. INSTALLATION

16 8210-30025 R1

4.9. Ducting Requirements

When connecting ducting, the following requirements apply:

• Ensure the fan fits properly with the transition ducting.

• Independently support ductwork or stacks, as excess weight may distort the fan housing and cause contact

between moving parts.

• Duct connections at the fan inlet or outlet should be flexible to isolate the fan from a different duct

diameter, from vibration and from noise.

• Do not support the fan with ducting.

Using ducting to support the fan can damage the fan and ducting.

4. INSTALLATION CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 17

5. Operation

Before continuing, ensure you have completely read and understood this manual’s

Safety section, in addition to the safety information in the section(s) below.

5.1. Operation Safety

• Keep away from fan impeller/blade; high suction can pull a person toward the inlet. Contact

with an unguarded impeller/blade will cause severe injury.

• Keep inlet screen and safety guards securely in place at all times.

• Ensure the fan inlet, outlet, ductwork and roof vents are not plugged with any foreign

material.

• Do not operate the fan if there is excessive vibration or noise.

• Ensure that electrical cords are in good condition; replace if necessary.

• Ensure maintenance has been performed and is up to date.

5.2. Air Pressure and Suction

In addition to the normal dangers of rotating machinery, fans present another hazard from the suction created

at the fan inlet. This suction can draw materials into the fan where they become high velocity projectiles at the

outlet. It can also be extremely dangerous to persons in close proximity to the inlet, as the forces involved can

overcome the strength of most individuals. Inlets and outlets that are not ducted should be screened to prevent

entry and discharge of solid objects.

Cleanout doors, as well as access doors to the duct system, should never be opened while the fan is in

operation. Serious injury could result from the effects of air pressure or suction.

Quick-opening doors must have the door handle bolts securely tightened to prevent accidental or unauthorized

opening. Bolted doors must be tightened for the same reason.

5.3. Start-Up and Break-In

Note

Safe operation and maintenance includes the selection and use of appropriate safety accessories for the

specific installation. This is the responsibility of the system designer and requires consideration of

equipment location and accessibility as well as adjacent components. All safety accessories must be

installed properly prior to start up. Safe operating speed is a function of system temperature and wheel

design. Do not under any circumstances exceed the maximum safe fan speed. Call AGI Airlanco for

assistance when it is necessary to change fan speed.

Before operating the centrifugal fan, perform a visual inspection, see Maintenance section.

1. If the drive components are not supplied by AGI Airlanco, verify with the manufacturer that the starting

torque is adequate for the speed and inertia of the fan.

2. Inspect the installation prior to starting the fan. Check for any loose items or debris that could be drawn into

the fan or dislodged by the fan discharge. Check the interior of the fan as well. Turn the wheel by hand to

check for binding.

CENTRIFUGAL FAN – AERATION FAN 5. OPERATION

18 8210-30025 R1

3. Check the drive installation and belt tension.

4. Check the tightness of all setscrews, nuts and bolts. When furnished, tighten hub setscrews with the wheel

oriented so that the setscrew is positioned underneath the shaft.

5. Install all remaining safety devices and guards.

6. Verify that the supply voltage is correct and wire the motor. “Bump” the starter to check for proper wheel

rotation.

Use extreme caution when testing the fan with ducting disconnected.

7. Apply power and check for unusual sounds or excessive vibration. If either exists, see the Troubleshooting

section.

Important

To avoid motor overload, do not run the fan for more than a few seconds if ductwork is not fully

installed. Without the ductwork attached, normal operating speed may not be obtained without

motor overload. Once ductwork is attached, check for correct fan speed and complete installation.

Ductwork and guards must be fully installed for safety.

8. Setscrews should be rechecked after eight hours and again in two weeks of operation.

5.4. Bearings Surface Temperature

Since bearings are completely filled with grease at the factory, they may run at an elevated temperature during

initial operation.

• Surface temperatures may reach 180°F and grease may bleed from the bearing seals. This is normal and no

attempt should be made to replace lost grease.

• Bearing surface temperatures will decrease when the internal grease quantity reaches a normal operating

level.

• Relubrication should follow the recommended schedule.

5.5. Emergency Stop

Foreign Object Obstruction

1. Immediately shut down the centrifugal fan and lock out the power source.

2. Remove the obstruction.

3. Inspect the inlet screen and fan wheel assembly for damage. Repair or replace as required.

Excessive Fan Vibration or Noise

1. Immediately shut down and lock out the power source.

2. Inspect the inlet for an obstruction, remove if necessary.

3. Restart the centrifugal fan to see if it is still vibrating excessively. If it is, immediately shut off the fan and

lock out power source.

4. Contact your local dealer for inspection of the fan wheel assembly.

5. OPERATION CENTRIFUGAL FAN – AERATION FAN

8210-30025 R1 19

5.6. Shutdown

1. Single Phase Models: Move the toggle switch to the OFF position.

2. Three Phase Models: Press the red STOP button.

3. When shutting down the fan for extended periods of time, shut off the power at the disconnect/source to

prevent any inadvertent start-up of the fan.

DO NOT close roof vents until fan has been turned off, or roof damage may occur.

5.7. Storage

1. Ensure that all foreign material is removed from the fan.

2. Inspect electrical wires and repair if necessary.

3. Inspect all parts and components and repair or replace as required.

4. Cover the fan with a tarp to keep out foreign material and protect it from weather conditions.

5. Ensure the storage area is in a clean and dry location.

5.7.1 Bearings

Short-term Storage

• Any stored bearing can be damaged by condensation caused by temperature variations.

• AGI Airlanco fan bearings are filled with grease at the factory to exclude air and moisture. Such protection is

adequate for shipment and subsequent immediate installation.

Long-term or Outdoor Storage

• Regrease and wrap the mounted bearings with plastic for protection.

• Rotate the fan wheel by hand at least every 2 weeks to redistribute grease on internal bearing parts.

• Each month the bearings should be purged with new grease to remove condensation, since even a filled

bearing can accumulate moisture.

Use caution when purging, as excessive pressure can damage the seals.

• Rotate the shaft while slowly adding grease

CENTRIFUGAL FAN – AERATION FAN 5. OPERATION

20 8210-30025 R1

6. Maintenance

Before continuing, ensure you have completely read and understood this manual’s

Safety section, in addition to the safety information in the section(s) below.

6.1. Maintenance Safety

• Keep components in good condition. Follow the maintenance

procedures.

• Ensure the service area is clean, dry, and has sufficient

lighting.

• Do not modify any components without written authorization

from the manufacturer. Modification can be dangerous and

result in serious injuries.

• Shut down and lock out power before maintaining

equipment.

• The rotating assembly should be blocked securely before

attempting maintenance of any kind.

• All electrical maintenance must be performed by a qualified

electrician in accordance with all applicable local codes and

standards.

• After maintenance is complete, replace all guards, service

doors, and/or covers.

• Use only genuine AGI Airlanco replacement parts or

equivalent. Use of unauthorized parts will void warranty. If in

doubt, contact AGI Airlanco or your local dealer.

6.2. Maintenance Schedule

Proper maintenance habits mean a longer life, better efficiency, and safer operation of the unit. Please follow

the Maintenance Schedule below. Keep good records of the hours the centrifugal fan has been operated and

the maintenance performed.

Daily:

Section 6.3 – Visually Inspect the Centrifugal Fan on page 21

Annually or as needed:

Section 6.4 – Cleaning the Fan Blade and Housing on page 21 and Section 6.7 – Motor Bearings Maintenance

on page 24

As Required:

Section 6.5.2 – Fan Wheel/Propeller Balance on page 23

6. MAINTENANCE CENTRIFUGAL FAN – AERATION FAN

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AGI Centrifugal Fan (General Industries) User manual

AGI Centrifugal Fan (General Industries) User manual

AGI Centrifugal Fan (General Industries) User manual

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