Rockwell Automation Publication 1500-UM055I-EN-P - December 2021
57
Chapter 4 Maintenance
Bolt-on Fuse Removal/Installation
Tools required:
3/8-in. drive ratchet, 2-in. extension, 6-in. extension, 12-in.
extension, 1/2-in. socket, 3/8-in. drive torque wrench.
1. Remove the two lower mounting nuts, lock and flat washers from the
mounting studs.
2. Remove the upper two mounting nuts, lock and flat washers from the
mounting studs and remove the fuse from the fuse mounting studs.
3. Install the replacement fuse on the four mounting studs, hold the fuse in
place and install the upper two flat washers, lock washers and nuts.
Torque nuts to 14.5 N•m (11 lb•ft).
4. Install the lower two flat washers, lock washers and nuts. Torque nuts to
14.5 N•m (11 lb•ft).
5. If interphase barriers were previously removed ensure they are properly
reinstalled.
Clip-on Fuse Removal/Installation
Recommended tool:
Fuse extractor part # 80144-491-02 (optional)
1. Place the cup section of the fuse extractor over the top of the fuse.
2. Pull back on fuse extractor with a quick motion to dislodge the upper
portion of the fuse from top fuse clip.
3. Set fuse extractor aside.
4. Remove the lower portion of the fuse from fuse clip by pulling up and
slightly rotating the fuse in one entire movement.
5. To install the replacement fuse, place the fuse between the fuse clips.
6. Ensure that the flares on the fuse ferrules are properly located with
respect to the fuse clips.
7. Apply a rapid shove to the bottom portion of the fuse barrel to force the
fuse into the clip.
8. Apply a rapid shove to the top portion of the fuse barrel to force the fuse
into the clip.
9. Grip center of fuse barrel with both hands and apply slight back and
forward force to ensure fuse has been properly seated in the fuse clips.
10. Again check and verify that the flares at the top and bottom of the fuse
are not in the contact area of the fuse clip.
11. If interphase barriers were previously removed ensure they are properly
reinstalled.
ATTENTION:
The fuses may be hot for up to one hour after operating.
Verify the temperature before handling and use insulated hand
protection if needed. Failure to do so may result in burns.
The fuse configuration will determine what length of extension will
be required to get at the mounting hardware. The fuse
configuration will also determine what size of interphase barriers
are installed, the lower barriers can be removed to provide better
access to the fuse mounting nuts.
The interphase barriers located at the bottom of the fuse assembly
can be removed to ease the removal and installation of the fuse.
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Страница 74: ...74 Rockwell Automation Publication 1500 UM055I EN P December 2021 Chapter 4 Maintenance Notes...
Страница 76: ...76 Rockwell Automation Publication 1500 UM055I EN P December 2021 Chapter 5 Spare Parts Notes...
Страница 106: ...106 Rockwell Automation Publication 1500 UM055I EN P December 2021 Appendix E History of Changes Notes...