BELT DEFLECTION FORCE (LBS)
BELT
SMALLEST
UNNOTCHED
CROSS
SHEAVE
SECTION
DIAMETER
USED
3.0-3.6
3.7
A, AX
3.8-4.8
4.5
5.0-7.0
5.4
3.4-4.2
—
B, BX
4.4-5.6
5.3
5.8-8.6
6.3
Table 1
BELT CONDITION
TENSION FORCE IN BELT (LBS)
New
Used
Table 2
Fig. 66 — V-Belt Force Label
NOTCHED BELTS
BELTS
NEW
USED
NEW
5.5
4.1
6.1
6.8
5.0
7.4
8.0
5.7
8.4
—
4.9
7.2
7.9
7.1
10.5
9.4
8.5
12.6
100
80
BELT TENSION METHOD — Requires
gauge that measures tension in belt in units of lbs force.
MOUNTING
BOLTS (4)
Fig. 67 — Belt Drive Motor Mounting
Pre-Start and Start-Up —
cal installation of the unit. Refer to the unit's Service Manual
for detailed Pre-Start and Start-Up instructions. Download the
latest versions from HVAC Partners (www.hvacpartners.com).
48
belt
tension
BLOWER PULLEY
V-BELT
MOTOR
PULLEY
MOTOR
MOTOR MOUNTING
PLATE
This completes the mechani-