Aerovent IM-101 Manuel d'utilisateur télécharger pdf

V-Belt Drive

Proper alignment and balance of the V-belt is as important as

a well-balanced impeller. To insure smooth fan operation, the

following should be checked:

1. Fan and motor sheave must be in axial alignment. Shafts

are parallel in both the vertical and horizontal planes

(Figure 1).

2. Fan motor sheave must be in radial alignment. When

sheaves are of equal width, align with straightedge (Figure

1a). When sheaves are of unequal width, align center of

sheaves (Figure 1b).

3. Sheaves must have no noticeable eccentricity.

4. Belts must have the proper tension. Belts either too loose

or too tight cause vibration and excessive wear (Figure 2).

See IM-100 for belt tension adjustment procedure.

5. After proper installation of drives, recheck complete

assembly for smoothness of operation. Recom-

mended vibration limits shown on page 2 of IM-100.

Alignment

Flexible Couplings

Direct-coupled fans, which are received factory assembled, on

a common base plate, are accurately aligned before shipment.

However, base plates are flexible to some extent and therefore

must not be relied upon to maintain the factory alignment.

Realignment is necessary after the fan has been leveled, grout-

ed, and the foundation bolts tightened. Also, check lubricant,

where applicable, following manufacturer’s recommendations

for type and amount of lubricant.

For field installation, the coupling should be mounted as

follows:

1. Remove dirt or rust from fan and motor shafts and coat

with grease or oil for ease of mounting.

2. Check fan and fan shaft alignment, making sure that bear-

ings are secure. Mount fan shaft coupling half flush to end

of shaft and secure.

3. Mount motor shaft coupling half flush to end of shaft and

secure.

4. Move motor into position, with the coupling faces sepa-

rated by the coupling manufacturer’s specified gap.

5. With a straightedge, tapered wedge, or a feeler gauge, check

for parallel and angular alignment (Figure 2a).

6. Align the shafts until a straightedge appears to be parallel

to the shafts. Repeat at three additional points at approxi-

mately 90° from each other (Figure 2b). Recheck hub sepa-

ration gap.

7. For more accurate alignment, use a dial indicator clamped

on one hub. With the dial button resting on the other hub,

rotate the hub on which the indicator is clamped and

observe the indicator reading. Take readings at four loca-

tions, 90° apart. With correct alignment, the faces of the

couplings should be parallel within .002".

8. Once proper alignment is assured, secure the motor, exam-

Figure 1

Figure 1a Figure 1b

Figure 2

Figure 2a Figure 2b

General Installation, Operation and Maintenance Instructions For Aerovent Products

IM-101

June 1997

1 2

Résumé du contenu

Page 1 - Alignment

Page 2 - Centrifugal Fans

ine alignment, complete the assembly, and lubricate the coupling (when required) before putting the unit into operation. ImpellersFans, which are rece

Commentaires sur ces manuels

Pas de commentaire

Aerovent IM-101 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Ventilateurs Aerovent IM-101. Aerovent IM-101 User Manual Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Ventilateurs Aerovent IM-101