Replacing The Fuse - GE AquaTrans AT868 User Manual

Replacing the Fuse

Parts Replacement
Use the steps below to replace the AT868 fuse (refer to Figure 7-1 on
page 7-7):
1. Disconnect the power to the AT868 and move the electronics
enclosure to a flat service.
The main power to the Model AT868 must be disconnected
2. Loosen the six set screws on the front cover. Remove the front
cover.
3. Remove the four screws from the bottom mounting plate.
4. Remove the mounting plate from the chassis. Loosen cable glands
if necessary.
5. From the cutout on the back of the mounting plate, pull the plastic
cover off the fuse holder and remove the old fuse.
6. Obtain a new fuse of the same rating and type. Use only a type
3AG (1-1/4" x 1/4") Slo-Blo fuse, having a rating as indicated in
Table 7-1 below.
Table 7-1: Line Voltages & Fuse Ratings
Line Voltage
85-265 VAC
12-28 VDC
7. Press the new fuse into the fuse holder and reinstall the plastic fuse
cover.
8. Be sure to record the fuse replacement in Appendix E, Service
Record.
9. Replace the mounting plate and the four screws. Tighten the
cables and cable glands.
10.Replace the cover and secure the six set screws.
Before powering up the AT868, make sure all the flat and
lock washers have been reinstalled. Washers or other
metal components left inside the enclosure may cause
!WARNING!
before proceeding.
Fuse Rating
0.25 A, Slo-Blo
2.0 A, Slo-Blo
!WARNING!
electrical problems
September 2004
7-3