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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 a
t the main circuit breaker.
9. Turn on the con
trol box power switch.
NOTE: The gre
en LED on the barrier board (106),
the green pow
er LED on the EFCM module (139),
and the 24V gr
een LED on each of the pump
control mod
ules (132) will light when operating.
Figure 27 Replacing the 24 Vdc Power Supply
4
2
332709B