Maintenance
95
Operating Instructions HYGROPHIL® H 4230-10 Serie A BA 030520
6.11
Replacing the proportional valve
● First dismount the display-/ profibus-board and the electronics board
(follow the instructions according to section 6.9 and 6.10).
● Disconnect the two blue hoses from the proportional valve
for this press in hose catch at the nipple and pull out the hose at the
same time.
● Unscrew the two allen screws and take the valve out.
● Insert the new proportional valve and fix it with the two screws.
● Connect the two hoses to their nipples.
● Reassemble the display-/ profibus board and the electronics board.
● Connect the plug of the proportional valve to the electronics board (see
page 93).
