Graco ProMix PD2K Repair Parts Manual page 44

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 36.
2. Loosen the screws (124) and remove the
enclosure cover (117).
3. Note the position of the pump control
module input and output cables. See
Electrical Schematics, page 29. Disconnect the
cables from the pump control module (132).
4. Remove the screws (143) holding the pump
control module to the enclosure. Remove the
pump control module.
5. Install the new pump control module, using the
screws (143).
6. Reconnect the cables to the positions as noted
above.
7. Turn on power at the main circuit breaker.
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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.
9. Reinstall the cover (117) and tighten the screws
(124).
Figure 32 Replacing a Pump Control Module
3A2800B