Graco 309909H User Manual
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Repair
309909H
17
Replacing Main Circuit Board
1.
Remove User Interface cover. See page 16.
2.
Disconnect all wire connectors from board (301).
F
F
IG
. 3.
3.
Remove four screws (302) and replace board (301).
4.
5.
Recalibrate system. See ProMix Easy Operation
Manual.
Manual.
CAUTION
To avoid damaging circuit board, wear a grounding
strap.
strap.
NOTE: If the main control board is replaced on
units that use a flow meter, the flow meter calibra-
tion data must be set using a PC and a Data
Download Kit (Graco P/N 248403 for hazardous
locations or Graco P/N 248404 for non-hazardous
locations).
units that use a flow meter, the flow meter calibra-
tion data must be set using a PC and a Data
Download Kit (Graco P/N 248403 for hazardous
locations or Graco P/N 248404 for non-hazardous
locations).
F
IG
. 3
320
301
TI4561a