KROHNE VARIFLUX IFM 6080 K-EEx-i-EEx EN - Manual (Page 28)

ALTOFLUX IFM x080 K-EEx and ALTOFLUX IFM x080 K / i-EEx 28
MODIS version IFC 090i-EEx
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 it carefully aside.
3. Disconnect the 2-pole field circuit connector (item B) and the 3-pole electrode circuit connector (item
C). See figures in Sect. 5.1 and 5.2 for details.
4. Unscrew the two screws D and screw SE by a screwdriver with a long shaft (200 mm). Take out the
electronics unit, but do not damage the connecting cables. See the note IMPORTANT.
5. The defective power fuse (see following figure) can be replaced now. Use a fuse rated at
T1.25H250V (part No. 5.06232.00.00) for the 24 Vac/dc power supply and a fuse rated at T1.6H250V
(Part No. 5.07823.00.00) for the 100…230 Vac power supply. Note that the locations are slightly
different (the 24 Vac/dc supply version is shown).
6. Reassemble in reverse order (points 4 through 1).
Note: Read 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 removing or inserting the electronics unit into the signal converter
housing. This is to prevent damaging of the connecting cables!
IFC 090i-EEx electronics unit (24 Vac/dc version is shown)
Power fuse (24 Vac/dc power supply)
Fuse_230V
NOTE:
The power fuse on the 100…230 Vac version is located on a slightly different
position than the fuse of the 24 Vac/dc version ! See location "Fuse_230V".
PTB 97 ATEX 2265 U
[EEx ia] IIC
PTB 97 ATEX 2265 U