KROHNE IFC 110 Converter - Manual (Page 81)

Part C Special applications, functional checks, service, and order numbers Sect. 8.2
05/2003 IFC 110 F 81
8.2 Retrofitting of magnetic sensors MP (optional)
Switch off the power supply before opening the housing.
1)
Remove the cover from the terminal compartment (remove 2 screws).
2) Pull all cables out of the plug-in terminals.
3) Remove the glass cover from the control compartment (remove 4 screws).
4) Remove 4 screws from the front panel F, take hold of the handle on the upper end of the
front panel and carefully pull the complete electronic unit out of the signal converter housing.
5) Put down the electronic unit with the front panel F facing down (see illustration on the next
but one page).
6) Position the 2 mm (0.08”) thick insulating strip (Order No. 3 15940.01) loosely on top of the
MP printed circuit board (PCB). The magnetic sensors and chip capacitor slip into the 4
holes in the insulating strip. Slip the MP PCB and insulating strip from right to left between
the front panel and BDE PCB, taking care that the MP PCB and insulating strip are slipped
through the three retaining clips H at the back of front panel F. Slip the socket connector of
the MP PCB onto the (5-pin) plug connector PL
MP
.
7) Fix the MP PCB with special steel tooth lock washer and nut S
MP
to establish contact
between the back of the PCB and the back of the front panel. When correctly fitted, the MP
PCB must be slightly bent between the final retaining clip H and the plug connector PL
MP
.
8) Re-assemble in reverse order (items 4 to 1 above).
9) Switch on the power supply. The ”magnet active” LED on the front panel is green.
The function of the corresponding keys is tripped by touching the glass pane above the
3 white fields ”
→, ↵ and ↑” with the bar magnet. The LED lights up red, see Section 4.2,
items  and ‚ .