KROHNE VARIFLUX IFM 6080 K-EEx-i-EEx EN - Manual (Page 29)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 29
5.4 Changing power supply voltage
This only applies to the regular IFC 090-EEx electronics unit with 100-230 Vac power supply.
Note: Before commencing work, read the instructions in Sect. 5.1 ("Before opening").
Then continue as follows:
1. Remove the cover of the electronics compartment.
2. Unscrew the two screws A of the display unit and turn the display unit carefully aside.
3. Unscrew the two mounting screws D of the electronics unit and screw SE, which fixes the copper
ground strip at the back of the housing. A screwdriver with a long shaft (200 mm) can best be used to
unscrew SE (e.g. screwdriver type Philips No. 2).
4. Disconnect the 2-pole and 3-pole connectors and carefully remove the electronics unit.
5. The voltage setting of the power supply can be changed by turning the dummy dual-in-line block (i.e.
voltage selector, see last figure in Sect. 5.3) over 180° in its socket. The position of the notch on the
dummy dual-in-line block indicates the voltage setting. Also see the sticker that is glued on the mains
transformer.
6. Reassemble in reverse order (points 4 through 1).
7. Screw the cover of the electronics compartment back into the housing.
Note: Note the instructions of Sect. 5.1 ("After opening") during reassembling.
IMPORTANT!
Carefully keep the connecting cables of the field coil and electrode circuits to the
side of the housing, while inserting the electronics unit into respectively removing it
from the signal converter housing. This is to prevent damaging of the connecting
cables!