Repair
Replacing the 24 Vdc Power Supply
NOTICE
To avoid damaging the circuit boards when servicing the control box, wear Part No. 112190 grounding strap on your wrist and ground appropriately.
To avoid electrical component damage, remove all system power before plugging any connectors.
1.Follow the steps in Before Servicing, page 34.
2.Loosen the screws (124) and remove the enclosure cover (117, not shown).
3.Note the position of the power supply input and output wires. See Electrical Schematics, page 27. Disconnect the wires from the power supply (120).
4.Remove the screws (129) holding the power supply to the side of the enclosure. Remove the power supply.
5.Install the new power supply, using the screws (129).
6.Reconnect the wires to the positions as noted above.
NOTICE
Failure to follow the electrical schematic could result in damage to the electrical components.
7.Reinstall the cover (117) and tighten the screws (124).
8.Turn on power at the main circuit breaker.
9.Turn on the control box power switch.
NOTE: The green LED on the barrier board (106), the green power LED on the EFCM module (139), and the 24V green LED on each of the pump control modules (132) will light when operating.
Figure 27 Replacing the 24 Vdc Power Supply
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