YOKOGAWA EJX530A - Troubleshooting and Alarms

<8. Maintenance>
8-5
IM 01C25F01-01E
■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 capsule
assembly.
5) Clean the capsule assembly or replace with a
new one.
■ReassemblingtheCapsuleAssembly
1) Insert the capsule assembly to the transmitter
section. Reattach the sopper with the hexagon-
head screw.
2) Tighten the two setscrews. (Tighten the screws
to a torque of 1.5 N·m)
3) Install the CPU assembly according to
subsection 8.4.2.
4) After completing reassembly, adjust the zero
point and recheck the parameters.
F0804.ai
Transmitter section
Capsule assembly
Setscrew
Stopper
Hexagon
head screw
Figure 8.4 Removing and Mounting the Pressure-
detector Section
8.5 Troubleshooting
If any abnormality appears in the measured values,
usethetroubleshootingowchartbelowtoisolate
and remedy the problem. Since some problems
havecomplexcauses,theseowchartsmay
notidentifyall.Ifyouhavedifcultyisolatingor
correcting a problem, contact Yokogawa service
personnel.