Aerotech, A Munters Company
4215 Legion Dr. Mason, MI 48854-1036 USA
(517) 676-7070 Fax (517) 676-7078
FORM: QM1211
January 2004
Page 2 of 2
Drive Alignment
1) Use a straight edge to check the alignment of the pulleys. See Figure 5.
2) Check alignment of belt on idler pulley, it should be centered on the idler pulley. The belt tensioner’s idler
pulley is fixed in position, therefore, alignment must be obtained by adjusting the motor and propeller pulleys.
3) If an adjustment is needed, remove the belt, then loosen the set screws in the pulleys and move them as
necessary to achieve proper alignment.
4) Remember to tighten the pulley set screws after making an adjustment.
5) Drive alignment is very important for long belt life and proper operation.
Installation now complete, reconnect power to the motor and install the shutter or inlet guard.
Figure 5
Idler Pulley
Propeller
Pulley
Straight Edge
Belt
5) To torque the belt tensioner to the proper setting place a
15
/16" wrench onto the
15
/16" hex on the tensioner.
See Figure 4. Turn wrench counterclockwise until the single mark on one half of the belt tensioner is aligned
half way between marks 2 and 3 on the opposite half of the tensioner. See Figure 4. Hold tensioner at this
setting and tighten the
3
/8" x 1
3
/4" bolt fastening the tensioner to the motor base. Fasten tensioner
3
/8" bolt to
40ft. lbs of torque. See Figure 4.
Mark on Base
Second Mark on
Tensioner Arm
Motor
Pulley
Figure 4