Repair
Replacing a Pump Control Module
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).
3.Note the position of the pump control module cables. See Electrical Schematics, page 27. Disconnect the cables from the pump control module (132).
4.Remove the screws (143) and washers (177) holding the pump control module to the enclosure. Remove the pump control module.
5.Install the new pump control module, using the screws (143) and washers (177).
6.Reconnect the cables to the positions as noted above.
7.Turn on power at the main circuit breaker.
8.Turn on the control box power switch. Check that the 48V green LED and the 24V green LED on each of the pump control modules (132) are on.
NOTE: If the pumps do not work, recheck the wiring.
9.Reinstall the cover (117) and tighten the screws (124).
Figure 29 Replacing a Pump Control Module
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