Precision AC Current Shunt Set
Repair Procedures Including Disassembly and Reassembly
31
Input N-type Connector Replacement (Coaxial Shunts)
Use the following procedure to replace the type-N input connector:
1. Remove the input end plate (Figure 11-
F
).
2. Remove the 3 mm screws, nuts and washers shown in Figure 11.
3. Using solder braid and the solder suction tool, remove the solder from the N-type
connector base plate/PCB joint.
4. Working between and taking care not to damage the PCB struts, melt the solder
attaching the N-type center pin from the back of PCB
A
and withdraw the N-type
connector. It may be necessary to repeat both solder removal steps until both the base
and the center pin are free.
5. Remove excess solder from the connector pad on PCB
A
.
6. Mount the new connector to the Current shunt with the original screws and washers.
7.
Position the nuts with the magnetized wrench and tighten the screws until the
connector is securely positioned. Do not fully tighten the screws as the N-type
connector may settle when residual solder melts.
8. Solder the N-type connector base to PCB
B
.
9. Working between the PCB struts, solder the center pin of N-type connector to the
back of the end PCB.
10. Fully tighten the 3 mm screws securing the connector.
11. Clean any flux residue from the soldered areas. Be careful not to get cleaning fluids
on the shunt resistors.
12. Replace the end plate.
feh010f.eps
Figure 12. N-Type Input Current Connector
Summary of Contents for A40B
Page 6: ...A40B Instruction Manual iv...
Page 8: ...A40B Instruction Manual vi...
