AGI Centrifugal Fan (General Industries) User manual

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
ON
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
AIR-FLOW
10008890
10009140
O
P
E
N
C
L
O
S
E
D
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
Æ
1. Single Phase Models: Move the toggle switch to the OFF position.
Æ
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

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