Operator's Manual: Models CB-3500 & CB-5000
3-7
WARNING:
To prevent serious
personal injury, DO NOT operate the
furnace without the belt and blower guards in place.
1.
Refer to Figure 3F.
2.
Install the belt guard and blower guard
as shown.
Figure 3F - Installing the Belt and Blower Guards
Installing the Belt Guard and the Blower Guard
Installing the Motor Pulley, Blower Pulley, and V-Belt (continued)
5.
Align drilled holes in bushing flange with tapped holes in the pulley. Use the capscrews and washers
provided with the bushing package to fasten the pulley on to the bushing. DO NOT COMPLETELY
TIGHTEN THE SCREWS AT THIS POINT! Make sure you can still slide the bushing and pulley for
future alignment with the motor pulley. (Additional information is available in the “Bushing Instruction
Sheet” provided with each bushing)
6.
Install the motor pulley following steps 1 through 5.
7.
Align the motor pulley with the blower pulley.
a. Place the blower bushing ½ inch from the end of the shaft and tighten the capscrews securely
(9 Ft. - Lbs. if using a torque wrench).
b. Place a level or straight edge flat onto the two most outer edges of the blower pulley.
c. Place the motor pulley and bushing about ¼ inch away from the straight edge.
d. Start tightening the screws on the motor bushing. As the screws are tightened, the motor pulley will
approach the straight edge. TIGHTEN THE CAPSCREWS SECURELY (9 Ft. - Lbs. if using a
torque wrench).
e. Four points of the two pulleys should be touching the straight edge. If they don’t make full contact,
loosen the screws on the motor bushing and realign it so both pulleys are on the same plane.
8.
Place the belt on the pulleys, starting with the motor pulley and feeding it onto the blower pulley.
9.
Tighten the belt (Refer to Figure 3E).
a. Raise the motor bracket and at the same time tighten the nut on the tension bracket.
b. DO NOT over tighten the belt. Leave about 1inch of slack (when pushing on the top of the belt, it
should deflect about 1 inch).
BELT GUARD
BLOWER
GUARD
I88802-B
Summary of Contents for CB-3500 series
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