User`s manual

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<8. Maintenance>

8-6

IM 01C25B01-01E

8.4.4 Replacing the Process Connector

Gaskets

This subsection describes process connector

gasketreplacement.(Seegure8.5.)

(a) Loosen the two bolts, and remove the process

connectors.

(b) Replace the process connector gaskets.

boltssecurelyanduniformlytoatorqueshown

below, and verify that there are no pressure

leaks.

Model

EJ110

EJ120

EJ130

EJ310

EJ430

EJ440

C capsule D capsule

Torque(N·m)

{kgf·m}

39 to 49

{4to5}

49 to 59

{5to6}

F0805.ai

Bolt

Process connector

Process connector gasket

Figure 8.5 Removing and Mounting the Process

Connector

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.

8.5.1 BasicTroubleshooting

First determine whether the process variable

is actually abnormal or a problem exists in the

measurement system.

If the problem is in the measurement system,

isolate the problem and decide what corrective

action to take.

Thistransmitterisequippedwithaself-diagnostic

function which will be useful in troubleshooting,

andthetransmitterequippedwithanintegral

indicator will show an alarm code as a result of self-

diagnosis.

See subsection 8.5.3 for the list of alarms.