KROHNE OPTISONIC 6300 EEx EN - Manual (Page 22)

5
MAINTENANCE
22
OPTISONIC 6300
www.krohne.com 03/2010 - 7309972300 - EX OPTISONIC 6300 R03 en
5.3 Replacement of mains fuse
• Pull the display unit of the mounting frame and turn display unit carefully aside.
• Unscrew the two screws size M4 that hold the mounting frame with the electronics unit.
• Carefully pull the mounting frame with electronics unit out of the housing, until the small
printed circuit board with the six soldered coaxial cables can be pulled off of the sensor driver
PC-board. Now carefully remove the unit from the housing, while keeping the small printed
circuit board with coaxial cables down, close to the housing wall.
• The mains fuse is located in a fuse holder at the back-end of the electronics unit on the top
printed circuit board (power supply PCB). The specifications must be as follows:
• Reassemble the unit in reverse order.
WARNING!
Before commencing the work, refer to Before and after opening on page 21
, then continue as
follows:
Fuse type: 5 x 20 mm (H) according to IEC 60127-2/V Fuse type: 5 x 20 mm (H) according to IEC 60127-2/V Fuse type: 5 x 20 mm (H) according to IEC 60127-2/V Fuse type: 5 x 20 mm (H) according to IEC 60127-2/V
Power supply Power supply Power supply Power supply Electrical data Electrical data Electrical data Electrical data
12...24 V DC 250 V / 2 A
24 V AC/DC 250 V / 2 A
100...230 V AC 250 V / 0,8 A
WARNING!
Before reassembling the unit, refer to Before and after opening on page 21
, then: