Fuji Electric FCX-AII-V5 series Instructions Manual And Service Instructions page 98

Replacement of the internal parts of detecting unit
Nut
(1) Remove the 4 hexagon socket head bolts.
(2) The process covers, the O-ring and the bolts and nuts can now be removed.
(3) After disassembly, replace the faulty part with a new ones.
(4) Before reassembling, clean carefully the O ring groove of the process cover with a soft
cloth immersed with water, alcohol, Freon TF or similar.
(5) Reassemble the detecting unit by reversing the disassembling procedure.
Please check the correct position of the process covers to avoid that the diaphragms of the
measuring cell are damaged. The torque for the bolts of the process covers are indicated
in the following table.
Bolt size
M10
M10
M10
M12
M12
M16
M20
(6) After assembly, carry out a pressure test. Apply a pressure equal to 150% of the maximum
working pressure to both high pressure (H) and low pressure (L) measurement chambers of
the transmitter simultaneously during 15 minutes, and make sure that there is no leakage.
To avoid any damage of the measuring cell, do not exceed the test pressure
!
Caution
of the different cells (please refer to the technical datasheets of the concerned
Remember !
transmitter)
96
Gasket
Seal diaphragm
Seal tape
Bolt material Tightening torque
Cr-Mo steel
SUS 316
SUS 630
Cr-Mo steel
SUS 660
SUS 660
SUS 660
Oval flange surface
Measurement
chamber cover
Bolt
Maximum working pressure
50 N.m
40 N.m
50 N.m
60 N.m
60 N.m
110 N.m
260 N.m
420 bar
100 bar
420 bar
420 bar
420 bar
500 bar
1035 bar
TN5FCXA2V5h-E