Graco ProMix PD2K Repair Parts page 56

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
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
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 pump control
module (132).
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.
56
Before Servicing, page
9. Reinstall the cover (117) and tighten the screws
(124).
48.
34.
Figure 36 Replacing a Pump Control Module
332709D