KROHNE IFC 090F Converter EEx-ATEX EN - Manual (Page 26)

ALTOFLUX IFC 090 F-EEx and ALTOFLUX IFC 090 F / i-EEx 26
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