KROHNE MFC 300 EN - Manual (Page 122)

7
SERVICE
122
MFC 300
www.krohne.com 02/2012 - 4000498602 - MA MFC 300 R03 en
Service
7.1 Replacing the sensor or converter electronics
7.1.1 Replacing the sensor electronics (SE)
• Remove the 4 screws at the rear of the sensor electronics.
• Take the sensor electronics straight off WITHOUT
WITHOUT WITHOUT WITHOUT tilting it or tipping it from side to side as this
could damage the plugs and sockets and connections.
Do not lose the seal for the sensor electronics.
• Put the seal back in clean and when putting back the sensor electronics ensure that the
connectors glide into one another easily before pressing the sensor electronics on.
Do not damage the connector.
• Screw the sensor electronics back on properly.
We recommend applying Loctite or a similar adhesive to the screws.
DANGER!
The power supply MUST be switched off
MUST be switched off MUST be switched off MUST be switched off before replacing the electronics.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
DANGER!
Observe the waiting period for Ex devices.
INFORMATION!
To make replacement easier, a complete copy of the calibration coefficients saved in the sensor
electronics is also stored in the converter (back end). This means that the replacement can take
place without having to enter the calibration coefficients again or having to recalibrate.
.book Page 122 Monday, February 6, 2012 11:01 AM