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9/2019
FIGURE 21
BLOWER
HOUSING
DIRECT DRIVE BLOWER ASSEMBLY (SG / SC 036 & 060)
REMOVE TWO SCREWS
ON EACH SIDE TO SLIDE
BLOWER OUT OF UNIT
BLOWER MOTOR
SECURED TO THIS
SIDE OF HOUSING
INLET
GRID
BLOWER ASSEMBLY (SG / SC 120)
FIGURE 22
TO INCREASE CFM
LOOSEN ALLEN SCREW &
TURN PULLEY CLOCKWISE
TO DECREASE CFM
TURN PULLEY
COUNTERCLOCKWISE
PULLEY
MOTOR
SIDE VIEW
ALLEN
SCREW
BLOWER
MOTOR
PULLEY
BLOWER ASSEMBLY
SLIDING BASE
REMOVE SCREWS TO
SLIDE BLOWER
ASSEMBLY OUT OF UNIT
BELT TENSION
ADJUSTING BOLT - TURN
CLOCKWISE TO TIGHTEN
TO INCREASE BELT TENSION
1-Loosen front and back screws securing pivoting motor
base to slotted arm.
2-Turn adjusting bolt to the right, or clockwise, to move the
motor outward and tighten the belt.
3-Tighten pivoting base screw on motor pulley (front) side.
IMPORTANT - Align top edges of pivoting motor base and
mounting frame base parallel before tightening the screw
on the back side of base. Motor shaft and blower shaft
must be parallel.
4-Tighten pivoting base screw on back side of base.
PIVOTING BASE SCREWS
(FRONT AND BACK)
SLOTTED ARM
(FRONT AND BACK)
