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General Installation, Operation and Maintenance Instructions For Aerovent Products

1.0 GENERAL DESCRIPTION

Model ATA and ATABD axial fans come in various configura-

tions that offer flexibility to meet the needs of the end user.

1.2 DEFINITIONS

An axial fan consists of a propeller type impeller,

motor driven and ducted or shrouded so that the blades are

enclosed to increase operating efficiency.

An adjustable pitch impeller is one where the blade

angle can be changed, but only when the propeller is stationary.

1.3 Arrangements

Fans are available in two different configurations,

defined as follows:

Arrangement 4 (ATA) — The impeller is mounted

directly on the motor shaft with both motor and impeller

enclosed in the fan case.

Arrangement 9 (ATABD) — The impeller is mounted

on a bearing-supported shaft, belt driven by a motor sup-

ported on the fan case.

1.4 APPLICATION

Fans can be installed in a free inlet or ducted inlet appli-

cation. Mounting arrangements include legs for floor mount-

ing, flanges for direct duct connections or brackets for vertical

or horizontal mount from the floor or ceiling.

1.5 ACCESSORIES

The following accessories are available on Model ATA

and ATABD fans.

a. Inlet bell

b. Inlet screen

c. Inlet and outlet cones

d. Companion flanges

e. Flexible connectors

f. Vibration isolators

g. Radial inlet vane dampers

h. Backdraft dampers

1.6 OPTIONS

a. Legs for horizontal floor mounting

b. Clips for horizontal ceiling suspension

c. Brackets for vertical floor or suspension mounting

1.6 NAMEPLATE NOMENCLATURE

The model number information on each fan nameplate is

explained in Figure 1.

2.0 INSTALLATION

2.1 RECEIVING/INSPECTION/STORAGE

All fans are shipped on wooden pallets. Each fan is

normally covered with plastic for weather protection. The fan

should remain on the pallet and covered or protected from the

weather until installation.

Carefully inspect the fan upon arrival for damage

incurred during shipment. Immediately report any damage to

both the factory and the carrier. For short-term storage, prior

to installation, the fan should remain covered with plastic

wrap on the shipping pallet and stored in a clean, dry location

away from the elements. If storage is to be for a period longer

than six (6) months, consult factory for long-term storage

instructions.

2.2 LIFTING

Fans should be lifted using slings. The slings can be

placed under the pallet and a spreader bar used as required.

2.3 MOUNTING

Depending on the type of fan support specified, the

fan can be floor mounted on legs, supported on a structural

frame for vertical airflow or ceiling hung by clip supports or

duct mounted.

Figure 1.

MODEL ATA & ATABD TUBEAXIAL FANS

100 - A - 3 - 27 - ATABD - 1067 - 10

Wheel Dia. (cm)

035, 040, 050

063, 071, 080

090, 100, 112

125

Propeller Design

No. of Blades

3 or 6

Blade Angle (Degrees)

Fan Type

ATA = Direct Drive

ATABD = Belt Drive

Fan RPM

Motor HP

IM-401

August 2014

Summary of content (4 pages)

PAGE 1
® IM-401 August 2014 General Installation, Operation and Maintenance Instructions For Aerovent Products MODEL ATA & ATABD TUBEAXIAL FANS Figure 1. 1.0 GENERAL DESCRIPTION Model ATA and ATABD axial fans come in various configurations that offer flexibility to meet the needs of the end user. DEFINITIONS An axial fan consists of a propeller type impeller, motor driven and ducted or shrouded so that the blades are enclosed to increase operating efficiency.
PAGE 2
.3.1 Vibration Isolators All fans are dynamically balanced to reduce vibration. However, it is recommended that the fan be supported on vibration isolators. Isolators should be selected for each installation in accordance with individual requirements. Concrete inertia pads are generally not required with ATA and ATABD fans. Figure 2. NOMINAL BLADE TIP CLEARANCE (INCHES) FAN SIZE MINIMUM NOMINAL MAXIMUM 035 .028 .063 .098 040 .032 .071 .110 050 .039 .087 .134 063 .047 .110 .173 071 .055 .126 .197 080 .
PAGE 3
Lubricate motor bearings with grease gun at the following intervals and numbers of strokes: HORSEPOWER PERIOD 1 12 Month 5 to 7 ⁄2 10 to 40 6 to 12 Month 50 to 150 6 Month STROKES (SEE NOTE) 1 3 3 NOTE: Normal amount of grease delivered by a hand cartridge type grease gun. Remove the purge plug when equipped. Grease does not have to purge from the purge plug, but the purge plug should be removed to release pressure.
PAGE 4
21 AIRFLOW SEE DETAIL A & B 22 20 11 12 4 5 AIRFLOW 7 FIGURE 5 DIRECT DRIVE 3 3. 4. 5. 7. 11. 12. 20. 21. 22. FIGURE 4 BELT DRIVE SHAFT & BEARING ASSEMBLY WASHER LOCK SCREW – M8X25 IMPELLER ASS’Y WASHER, FLAT SCREW, HEX HD. SHEAVE, DRIVEN SHEAVE, DRIVER BELT, DRIVE TABLE C. ROTOR BOLT #12 FAN SIZE 035, 040, & 050 TORQUE 156 IN-LBS. DETAIL A SIZES 035, 040, & 050 11 12 FIGURE 3 BELT DRIVE DETAIL B SIZES 063, 071, 080, 090, 100, 112 & 125 TABLE B. CAPSCREW TORQUE VALUES BUSHING DIAMETER NO.