Purpose
An anti-windmill brake is sometimes added as part of a modification to prevent incorrect condenser fan rotation caused by wind or adjacent fan staging (one fan operating while the other one is off). Some motors will start and continue to run in the opposite direction if the reverse rotation is severe enough, causing premature motor failure. The device also helps prevent hard motor starts. Occasionally when motors are replaced in the field, the installer forgets to install the brake on these applications, or the brake fails allowing reverse rotation.
Installation Instructions
- Lockout/Tagout the equipment being serviced.
- Remove the fan guard/mount to gain full access to the condenser fan.
- Remove the fan.
- Slip the brake on the shaft, being careful to allow for the correct rotation. If the shaft will not rotate in the proper direction, remove the brake, turn it over and replace on shaft.
- Bend the rod so it will strike a motor mount, or one of the motor’s extended through bolts, when the shaft turns the wrong way.
- Reinstall fan on motor shaft. Make sure the fan hub is mounted flush with the end of the motor shaft.
- Reinstall fan guard/mount.
- Remove Lockout/Tagout and verify operation.
Part information
|
Part Number |
Description |
|
AW12 |
Fits 1/2” shaft size |
|
AW58 |
Fits 5/8” shaft size |
Where to buy
- Trane Supply via Field Purchasing
- johnstonesupply.com
- packardonline.com
- supplyhouse.com
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.