Panametrics DigitalFlow XGF868i, Service Manual

Page: 32 / 72

Chapter 4. Parts Replacement
24 DigitalFlow™ XGF868i Service Manual
4.4 Replacing the Fuse
IMPORTANT: This procedure applies only to the fuse on the DC power supply. The fuse on the AC power supply is not
field-replaceable; please contact Panametrics for replacement.
If the fuse in the XGF868i has been blown, complete the following steps to install a new fuse:
1. Complete the steps in “Removing the Circuit Board Assembly” on page 22 .
2. Place the circuit board assembly on its side, with the terminal board on the left and the interconnect board on
the right. Rotate the assembly until the power supply board is facing upward.
3. Locate the fuse along the left side of the power supply board, just below the terminal board (refer to Illustration 6
in Figure 7 on page 30 ).
4. Pull the plastic cover off the fuse holder and remove the old fuse.
5. 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 4 below.
6. Press the new fuse into the fuse holder and reinstall the plastic fuse cover.
To complete the fuse replacement, proceed to “Installing the Circuit Board Assembly” on page 28 .
Note: Be sure to record the fuse replacement in Appendix A, Service Record .
Table 4: Line Voltages & Fuse Ratings
Line Voltage Fuse Rating
12-28 VDC 2.0 A, Slo-Blo
85-250 VAC Not field replaceable
(contact Panamtrics)