Milnor 5050, Service Manual

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Main Air Blower Wheel Replacement
PELLERIN MILNOR CORPORATION
BIPD6M06 (Published) Book specs- Dates: 20100326 / 20100326 / 20100326 Lang: ENG01 Applic: PD6 PDJ PDP
Main Air Blower Wheel Replacement
NOTICE P1: "Remove electrical power from the machine" means use the necessary safety
procedure for your location. In the USA, this is the OSHA lockout/tagout (LOTO) procedure.
More local requirements can also apply.
The two methods to replace the blower wheel are: 1) from below, through the dryer housing or 2)
from above. Replacement from below is simpler and the method explained in this document.
1.
Resources Needed
• Two maintenance personnel to handle the blower wheel overhead. Blower wheels range in
weight from about 50 to 90 pounds (23 to 41 Kg).
• A sturdy scaffold or platform to work at the level of the dryer housing (see Figure 1 )
• Dryer service manual (see the Blower Installation..." document)
• Replacement blower wheel from Milnor
• Tools such as a cold chisel and hammer to loosen/tighten the bearing lock nut
• Tools to remove, install, and torque 3/8" hex head bolts
• Two 3/8" x 16 x 3.5", full thread, high strength, hex head bolts to use as jack bolts
• A 2x4 wood stud to use for blocking
2.
Preparations
1. Familiarize yourself with the blower assembly (see the service manual).
2. Set up the scaffold or platform against the blower side of the dryer as shown in Figure 1 .
3. Remove electrical power from the machine (see Notice P1). Allow the machine to cool.
4. Remove the two access panels on the blower side of the dryer housing.
Figure 1: Preparing for the Work
Blower-side View (may be opposite hand) View of Cone and Blower from below
Legend
.
1. Blower housing
2. Side panels to remove
3. Scaffold or platform to work on.
4. Blower wheel
5. Cone
6. 3/8" hex bolt, flat washer, lock washer (8)
7. Steel spacer
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