
Maintenance
84
Operating Instructions HYGROPHIL® H 4230-12 BA 060207
6.11
Replacing the electronics board
To replace the electronics board you must first dismount the display-/
profibus-board. Follow the instructions according to section 6.10 to this.
To avoid mistakes when reassembling you should note the positions of all
connections or mark them distinctive.
Disconnect all cables and connectors.
Disconnect the three pressure hoses carefully.
Unscrew the seven attachment bolts.
Attention!
Do
not unscrew
the black plastics bolt in the bottom right
corner. It fixes components behind the board.
Take the board carefully out and insert the replacement board.
Fix the board with the four screws and reconnect all cable connections.
Do not unscrew !
PT 100 internal
Water pump
Proportional valve
PT 100 TT
PT 100 HT
Water sensor
Содержание HYGROPHIL H 4230-12 Ex Zone II
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