KROHNE IFC 090 Converter EN - Manual (Page 66)

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8.6 Turning the converter housing of the compact flowmeters
8.7 IFC 090 Replacement of converter electronic unit
To facilitate access to connecting, indicating and operating elements for flowmeters installed in
locations that are hard to get at, the signal converter housing can be turned through ± 90°.
Not allowed for flowmeters of hazardous-duty (Ex) design!
Available versions of flowmeters with IFC 090 K signal converter
Switch off power source before opening the housing !
1) Clamp the flowmeter firmly by the primary head housing.
2) Secure converter housing against slipping and tilting.
3) Remove the 2 hexagon socket screws connecting the two housings, and push
out the 2 plugs.
4) Carefully turn the converter housing clockwise or anti-clockwise a maximum of 90°,
but do not lift the housing. If the gasket should stick, do not attempt to lever it off.
5) To conform to the requirements of protection category IP 67, equivalent to NEMA 6,
keep connecting faces clean and tighten the 2 hexagon socket screws uniformly.
Replace the plugs in the two free holes.
A special electronic unit is available for hazardous-duty flowmeters, see separate “Ex”
installation instructions.
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 electronic 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 (illustration, see Sect. 8.8).
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) Carefully transfer DATAPROM IC 18 on the amplifier PCB (illustration, see Sect. 8.9)
from the “old” to the “new” electronic unit. When inserting, ensure direction of the IC
is correct, see Sect. 8.9 “Illustration of circuit boards”.
7) On the new electronic unit, check supply power and fuse F1, and if necessary change
over or renew as described in Sect. 8.2, points 6) and 7).
8) Reassemble in reverse order, points 5) - 1) above.
Any faults resulting from failure to follow these instructions
scrupulously shall not be covered by our warranty !
Turning the converter housing
A B C
D E