User`s manual

<8. Maintenance>
8-5
IM 01C25B01-01E
■RemovingtheCapsuleAssembly
IMPORTANT
Exercise care as follows when cleaning the
capsule assembly.
• Handlethecapsuleassemblywithcare,and
be especially careful not to damage or distort
the diaphragms that contact the process
uid.
• Donotuseachlorinatedoracidicsolutionfor
cleaning.
• Rinsethoroughlywithcleanwaterafter
cleaning.
1) Remove the CPU assembly as shown in
subsection 8.4.2.
2) Remove the two setscrews that connect the
transmitter section and pressure-detector
section.
3) Remove the hexagon-head screw and the
stopper.
4) Separate the transmitter section and pressure-
detector section.
5) Removethenutsfromthefourangebolts.
6) While supporting the capsule assembly with
onehand,removethecoverange.
7) Remove the capsule assembly.
8) Clean the capsule assembly or replace with a
new one.
■ReassemblingtheCapsuleAssembly
1) Insertthecapsuleassemblybetweentheange
bolts, paying close attention to the relative
positions of the H (high pressure side) and
L (low pressure side) marks on the capsule
assembly.
Replace the two capsule gaskets with new
gaskets.
2) Installthecoverangeonthehighpressure
side,anduseatorquewrenchtotightenthe
fournutsuniformlytoatorqueshownbelow.
Model
EJ110, EJ310, EJ430
EJ120
Wetted parts material code
S H,M,T,A,D,B
Torque(N·m)
{kgf·m}
17*
{1.7}
40
{4.1}
40
{4.1}
*: 40 for measurement span code F.
Model
EJ130 EJ440
Bolts & nuts material code
G, C J G, C J
Torque(N·m)
{kgf·m}
90
{9.2}
110
{11.2}
70
{7.1}
100
{10.2}
3) After the pressure-detector section has been
reassembled, a leak test must be performed to
verify that there are no pressure leaks.
4) Reattach the transmitter section to the
pressure-detector section.
Reattach the stopper with the hexagon-head
screw.
5) Tighten the two setscrews. (Tighten the screws
toatorqueof1.5N·m)
6) Install the CPU assembly according to
subsection 8.4.2.
7) After completing reassembly, adjust the zero
point and recheck the parameters.
F0804.ai
Transmitter section
Pressure-detector section
Cover flange
Capsule gasket
Flange bolt
Setscrew
Nut
Figure 8.4 Removing and Mounting the Pressure-
detector Section
IMPORTANT
If you remove the vent/drain plugs when
disassembling EJ130 and EJ440
transmitters, install the plugs again before
reassemblingthecoverangeswiththecapsule
assmbly.