TM 10-3510-226-23
0026 00
REPLACE-CONTINUED
Replace an Overload Relay
WARNING
This equipment operates at high voltages. Use extreme caution, observe all warnings,
and follow all safety procedures. Failure to observe safety precautions may result in
injury or death to personnel.
1. Disconnect power by switching the main circuit breaker to OFF.
2. Open the PLC enclosure.
3. Tag and disconnect wiring from the overload relay (Figure 11, Item 18).
4. Remove the screws retaining the overload relay (Figure 11, Item 18) to the PLC enclosure, and
remove the overload relay.
5. Install the replacement overload relay (Figure 11, Item 18) and retain with screws.
6. Connect wiring as tagged.
NOTE
The replacement overload relay (Figure 11, Item 18) must be set for the correct value.
The overload relay for the P-1 pump should be set at 9.8 A at the adjustment dial (Figure
11, Item 19). The overload relay for the P-3 pump should be set at 4.8 A, and the
overload relay for the P-1 pump should be set at 5.0 A.
7. Close the PLC enclosure, connect power, and monitor for normal operation.
0026 00-18
