KROHNE VFM 3100 EN - Manual (Page 32)

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Ribbon cable
connector
Display mounting
screws
Ground wire
Sensor wires
Retaining tabs
Tie wrap
Captive screw
Preamplifier
wires
Output signal wires
Signal wires
Figure 19. Electronic Module with Display Connections
Figure 20. Electronic Module Connections - CENELEC Certified
Extended and Standard Temperature Range.
Note: Do not cut the plastic tie wraps.
CENELEC Certified VFM 3100 Electronic Module Removal
The electronics of the CENELEC certified flameproof version
are similar to the Extended Temperature Range VFM 3100.
The CENELEC version has a housing with locking covers on
both the electronic module and field terminal sides.
• Remove power from the VFM 3100.
• Take off the cover lock assemblies by removing the two M6
socket cap screws with a 5 mm hexagonal wrench.
Save these lock assemblies.
• Once the lock assemblies are off, remove the electronic module
cover. Unscrew the two captive screws (one on each side of the
electronic module). See Figure 20.
• Pull the electronic module far enough out of the housing to
disconnect the preamplifier leads (brown-red-orange-yellow
cable) from terminal block on the electronic module and to
disconnect the signal lead (red-blue, yellow-green cables) from
the terminal blocks. Do not disconnect ground wire from housing.
• Remove electronic module from housing.
NOTE: Do not cut the plastic tie wraps.