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FloAire Indirect Fired Heater User Manual

Page 15

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Pulley Setscrew Torque

Thread Size

Torque (IN/Lb)

No. 10 (bushing)

32

1/4” (bushing)

72

5/16”

130

Pulley Adjustment

The adjustable motor pulley is factory set for the RPM specified.
Speed can be increased by closing or decreased by opening the
adjustable motor sheave. Two groove variable pitch pulleys must
be adjusted an equal number of turns open or closed. Any
increase in speed represents a substantial increase in
horsepower required by the unit. Motor amperage should always
be checked to avoid serious damage to the motor when the
speed is varied. Always torque setscrews according to the
setscrew torque chart.

Pulley Alignment












Proper Belt

Tension