User Manual

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Introduction

This bulletin has been prepared to guide the users of

AMX Mixed Flow Fans in the proper installation, opera-

tion and maintenance procedures to insure maximum

equipment life with trouble-free operation.

Shipping and Receiving

All Aerovent products are carefully constructed and

inspected before shipment to insure the highest stan-

dards of quality and performance. Compare all compo-

nents with the bill of lading or packing list to verify that

the proper unit was received. Check each unit for any

damage that may have occurred in transit. Any damage

should be reported immediately to the carrier and the

necessary damage report filed.

Handling

Handling of all air moving equipment should be con-

ducted by trained personnel and be consistent with safe

handling practices. Verify the lift capacity and operating

condition of handling equipment. Maintain handling

equipment to avoid serious personal injury.

Units shipped completely assembled may be lifted

with slings and spreader bars. Use well-padded chains,

cables or nylon straps (see Figure 1). On most units,

lifting lugs are fashioned to protect the fan and fan

housing from damage. Never lift a fan by the inlet or

discharge flange, shafting or drives, wheel, motor or

motor base, or in any other manner that may bend or

distort parts.

If installation is to be delayed, store the unit in a

protected area. Protect the fan and motor bearings from

moisture and vibration (or shock loading). For extended

storage, wrap entire unit in plastic. Wrap loosely so air

may circulate around the fan and moisture does not

collect, or use a desiccant. Extended storage requires

monthly inspections. Check for corrosion or damage to

the unit and for debris within the fan. Rotate the fan

wheel a few revolutions. Stop the wheel in a position

other than the initial position. Grease the bearings every

month with a grease compatible with the grease sup-

plied with the bearings.

Foundations and Supporting Structures

The AMX series can be mounted horizontally, vertically,

or at any angle if ordered accordingly. Mounting brackets

are available to accept both vibration isolating hangers

or pads. Typical mounting arrangements are shown in

Figures 2 through 8. Floor or wall mounted fans may be

installed on a flat, rigid foundation.

When mounting to concrete, anchor bolts should be

“L” or “T” shaped with sufficient length for nuts, wash-

ers, shims, and threads for draw-down. Each bolt should

be placed in a sleeve or pipe with diameter larger than

the bolt to allow for adjustment. When the mounting

surface and the surface of the fan base do not match,

shim level. Do not distort the fan when tightening the

anchor bolts.

A fan mounted to or within a structure should be

placed as close as possible to a rigid member such as

a wall or a column. The structure must be designed for

rotating equipment. Static design for strength is not suf-

ficient to insure operation at low vibration levels. Supports

for suspended fans must be cross-braced to prevent

side-sway. Structural resonance should be at least 20%

from fan operating speed. Vibration isolators may help

block the transmission of vibration into a structure.

Any ducting should have independent support; do not

use the fan to support ducting. Flexible connections are

required whenever the fan is supported on vibration

isolators.

Fan Installation, Factory Assembled Units

Follow proper handling instructions as given earlier.

1. Move the fan to the final mounting position.

2. Remove skid, crates and packing materials carefully.

3. Attach vibration isolators (if used) to appropriate

mounting clips on fan. Locate fan in position using

lifting instructions above.

4. Carefully level unit using shims (on rigid mounted

fans) at mounting hole locations. Fans mounted with

vibration isolators may be leveled by adjusting the

hardware.

5. Continue with Operations Checklist.

Figure 1.

Lifting With Lifting Lugs Lifting With Straps &

(Standard) Spreader Bar (Not Provided)

AMX Mixed Flow Fans

General Installation, Operation and Maintenance Instructions For Aerovent Products

IM-166

September 2009

Summary of content (8 pages)

PAGE 1
IM-166 September 2009 General Installation, Operation and Maintenance Instructions For Aerovent Products AMX Mixed Flow Fans Introduction This bulletin has been prepared to guide the users of AMX Mixed Flow Fans in the proper installation, operation and maintenance procedures to insure maximum equipment life with trouble-free operation. Shipping and Receiving All Aerovent products are carefully constructed and inspected before shipment to insure the highest standards of quality and performance.
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Motor Maintenance The three basic rules of motor maintenance are: 1. Keep the motor clean. 2. Keep the motor dry. 3. Keep the motor properly lubricated. Blow dust off periodically (with low pressure air) to prevent motor from overheating. Some smaller motors are lubricated for life. Lubrication requirements are normally attached to the motor. Use the motor manufacturer’s recommendations for relubrication. If this information is not available, the following schedule may be used.
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conditions. See Table 2 for typical lubrication data. However, every installation is different and the frequency of relubrication should be adjusted accordingly. On high moisture applications, the lubrication frequency may need to be doubled or tripled to adequately protect the bearings. Double the relubrication frequency on fans with vertical shafts.
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Figure 2. Typical Horizontal Mounting with Vibration Isolators ITEM 01 02 03 04 05 06 QTY. 1 4 4 4 8 8 DESCRIPTION AMX Fan Vibration Isolator* Adjusting & Leveling Bolt Hex Nut** Hex Nut** Anchor Bolt** W FLO AIR NOTES: *1. Vibration isolators are optional accessories. **2. Anchor bolts and hardware supplied by customer. 1 3 4 2 5 6 Figure 3. Typical Horizontal Mounting with Vibration Hangers (Ceiling Hung) ITEM 01 02 03 04 05 06 07 QTY.
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Figure 4. Typical Vertical Mounting with Vibration Hangers 7 4 5 4 3 ITEM 01 02 03 04 05 06 07 1 QTY. 1 4 4 32 32 4 4 DESCRIPTION AMX Fan Spring Hanger* Neoprene Washer Steel Washer** Hex Nut** Threaded Rod Hanger Rod** NOTES: *1. Spring hangers are optional accessories. 2. When spring hanger interferes with ductwork, add offset to threaded rod to provide clearance. **3. Hanger rods, nuts, and washers supplied by customer. 2 6 5 6 AIRFLOW 4 SEE NOTE 2 Figure 5.
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Figure 6. Cutaway View of AMX Assembly Figure 7. Exploded View of AMX Assembly 6 5 4 3 2 1 ITEM 01 02 03 04 05 06 QTY. 1 1 1 1 1 1 DESCRIPTION Inlet Adaptor Plate and Inlet Funnel Wheel Bearing Housing With End Cover Plate Belt Tube & Straightening Vanes Discharge Cone & Belt Tube Seal (Removable) Housing Motor Mount (Saddle Type) NOTES: 1. Shaft excluded from illustration. 2. Belts and driven sheave are accessible by removing discharge cone and belt tube seal.
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Figure 8. Typical Vertical Curb Mounting 3 ITEM 01 02 03 04 QTY. 1 See Note 1 1 DESCRIPTION AMX Fan Lag Bolt Discharge Cap (Optional) Curb Cap (Optional) NOTE: 1. Quantity and size of mounting lag bolts varies by fan size.
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