KROHNE IFC 090 Converter EN - Manual (Page 64)

8/1
8. Service
8.1 Replacement of power fuses
A) Fuse F1 in AC Versions 1 and 2
Switch off power source before opening the housing !
1) Unscrew cover of electronics compartment using the special wrench.
2) If provided, remove the display unit.
For this purpose, detach the two screws R and fold display unit to side.
3) Take out old and insert new power fuse F1.
Refer to the table in Sect. 8.5 for fuse rating and order number.
4) Reassemble in reverse order, items 2) - 1) above.
B) Fuses F1 and F2 in the AC/DC Version
Switch off power source before opening the housing !
1) Unscrew cover from the terminal compartment using the special wrench.
Pull off the two plugs for power (3-pin) and outputs/inputs (5-pin).
2) Unscrew cover from the electronics compartment using the special wrench.
3) If provided, remove display unit.
For this purpose, detach the two screws R and fold display unit to the side.
4) Carefully pull off the blue 9-pin plug X1/X4
(forming the connection to the primary head).
5) Detach the 2 recessed head screws Q and carefully remove the electronic unit.
6) Replace power fuses F1 and F2 on the power supply PCB,
refer to Sect. 8.9 for illustration of the PCB. Refer to the table in Sect. 8.5 for fuse
ratings and order numbers.
7) Reassemble in reverse order, points 5) - 1) above.
Switch off power source before opening the housing !
1) Unscrew the cover from the terminal compartment using the special wrench.
Pull off the two plugs for power (3-pin) and outputs/inputs (5-pin).
2) Unscrew the cover from the electronics compartment using the special wrench.
3) If provided, remove display unit.
For this purpose, detach the two screws R and fold display unit to the side.
4) Carefully pull off the blue 9-pin plug X1/X4
(forming the connection to the primary head).
5) Detach the 2 recessed head screws Q and carefully remove the electronic unit.
6) Transpose the voltage selector SW on the power supply PCB (see diagram in Sect. 8.9)
to obtain the required voltage according to the table in Sect. 8.5.
7) Change power fuse F1, refer to table in Sect. 8.5 for fuse rating.
8) Reassemble in reverse order, points 5) - 1) above.
8.2 Changeover of operating voltage on AC Versions 1 and 2
8.3 Turning the display PCB
Switch off power source before opening the housing !
1) Unscrew cover from electronic compartment using the special wrench.
2) Detach the two screws R and carefully turn the display unit ± 90° or 180°.
3) If display turned ± 90°, reposition the screws R on the display board.
4) Reassemble in reverse order, points 2) - 1) above.
Warning: Instrument must be properly grounded to avoid personnel shock hazard.