3.
Apply the force from the following table evenly across the width of the belt at the center of the belt span
and measure the deflection.
NOTE
A strip of keystock or similar material may be used to distribute the force evenly across the belt width.
Table 4. Belt deflection force
Belt type
New belt force (measured in pounds)
Used belt force (measured in
pounds)
B
6.7-9.4
4.5-6.3
4.
With the force still applied, measure the actual belt deflection. Adjust the belt tension if the measured
belt deflection is greater than the calculated deflection.
5.
When the booth has been returned to a safe for operation state, remove locks and restore power.
Replace fan belts
WARNING
Before servicing, lockout/tagout the fan, including the main electrical service.
1.
Loosen the motor hold-down bolts and move the motor toward the fan. (This is done by turning a
jackscrew which is a part of the motor base on models having larger motors.) The belt may be slipped
off the motor sheave and then easily removed from the sheave on the blade shaft.
2.
Check the numbers on the belt and make the replacement with a belt having the same length and
section.
3.
Adjust the motor outward to tighten the belt (see “Adjust belt tension” (page 38)) and tighten the motor
hold-down bolts. Be sure that the motor is not cocked at an angle and that the end face of the motor
sheave is parallel to the end face of the driven sheave.
4.
Adjust the belt tension (see “Adjust belt tension” (page 38)).
5.
After performing the above maintenance, check that all fasteners are tight.
6.
When the booth has been returned to a safe for operation state, remove locks and restore power.
Check V-belt drive alignment
Proper alignment and balance of the V-belt is important; check the following items to ensure smooth fan
operation.
Service and maintenance
Global Finishing Solutions
39
239-062 rev 5
