FloAire STAGED ELECTRIC HEAT MODULE - Manual (Page 12)

12
Maximum RPM and HP Chart
Blower Size Maximum RPM Maximum HP
10” 1800 2
15” 1400 5
18” 1200 5
20” 1000 10
25” 900 20
Pulley Setscrew Torque
Thread Size Torque (IN/Lb)
No. 10 (bushing) 32
1/4” (bushing) 72
5/16” 130
Pulley Adjustment Illustration
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