Belt Tension Method - Carrier Legacy 548J07 Installation Instructions Manual

Single package rooftop with heat pump with puron (r-410a) refrigerant

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Adjust belt tension by loosing the motor mounting plate front

bolts and rear bolt (see Fig. 55) and slide the plate towards the

fan (to reduce tension) or away from the fan (to increase ten-

sion). Ensure the blower shaft and motor shaft are parallel to

each other (pulleys aligned). Tighten all bolts securely when

finished.

BELT

SMALLEST

CROSS

SHEAVE

SECTION

DIAMETER

3.0-3.6

A, AX

3.8-4.8

5.0-7.0

3.4-4.2

B, BX

4.4-5.6

5.8-8.6

Table 1

BELT CONDITION

NEW

USED

Table 2

Fig. 54 — V-Belt Force Label

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

BELT DEFLECTION FORCE (LBS)

UNNOTCHED

NOTCHED

BELTS

USED

NEW

USED

3.7

5.5

4.1

4.5

6.8

5.0

5.4

8.0

5.7

—

4.9

5.3

7.9

7.1

6.3

9.4

8.5

TENSION FORCE IN BELT (LBS)

100

Cat. No. 04-53548009-01