Unit installation

Maintenance
SCXF-SVX01K-EN 83
Adjusting Belt Tension
To adjust belt tension see Figure 46, p. 83 and perform the
following procedure:
1. Loosen bolts A, B, and E on both sides of the sliding
motor base. See Figure 47, p. 83.
2. Loosen nuts C and D (as required for motor
horsepower) to slide the motor on its mounting plate
in the proper direction to tension or relieve tension on
the belt.
3. Adjust nutsA-D and bolt E. Do not stretch the belts over
the
sheaves.
4. Retighten all nuts and bolts.
5. Verify tension is adjusted properly.
Recommended belt tension range values are on the unit
fan scroll.To access the fan scroll, face the right-hand side
of the unit and remove the top left panel.The belt tension
label is on the top right-hand corner of the fan scroll. See
Figure 47, p. 83 and Figure 48, p. 84.
The correct operation tension for a V-belt drive is the
lowest tension at which the belt will not slip under the peak
load conditions. It may be necessary to increase the
tension of some drives to reduce flopping or excessive
startup squealing.
NOTICE:
Belt Tension!
Do not over-tension belts. Excessive belt tension will
reduce fan and motor bearing life, accelerate belt wear
and possibly cause shaft failure.
Figure 46. Belt tension gauge (top) and fan belt
adjustment (bottom)
Figure 47. Location of fan belt label on fan scroll (top)
and belt tensioning with fan adjustment
points (bottom)