Fault Elimination - ABB TZIDC Manual

Digital positioner

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Operating instructions manual (88 pages)

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Commissioning instruction (60 pages)

Table Of Contents

Table of Contents

TZIDC DIGITAL POSITIONER | DS/TZIDC-EN REV. G

Maintenance, repair

Maintenance: defines a combination of any actions carried

out to retain an item in, or restore it to, conditions in which it

is able to meet the requirements of the relevant specification

and perform its required functions.

Inspection:

defines any action comprising careful scrutiny of an item

carried out either without dismantling, or with the

addition of partial dismantling as required, supplemented

by means such as measurement, in order to arrive at

reliable conclusion as to the condition of an item.

Visual inspection:

defines an inspection which identifies, without the use of

access equipment and tools, those defects, such as

missing bolts, which will be apparent to the eye.

Close inspection:

defines an inspection which encompasses those aspects

covered by a visual inspection and, in addition, identifies

those defects, such as loose bolts, which will be apparent

only be the use of access equipment, for example steps,

where necessary, and tools.

Detailed inspection:

defines an inspection which encompasses those aspects

covered by a close inspection and, in addition, identifies

those defects, such as loose terminations, which will only

be apparent by opening the enclosure, and/or using,

where necessary, tools and test equipment.

•

Maintenance or replacement works are to be carried out

by qualified personnel only, i.e. personnel qualified

according to TRBS 1203 or similar.

•

Only such auxiliary components may be used in explosive

atmospheres which meet all requirements of European

and national directives and legislation.

•

Maintenance works that require a dismantling of the

system shall only be performed if the atmosphere is Ex-

free. If that is not possible, however, the usual

precautions have to be ensured according to local

regulations.

•

Components shall only be replaced by original spare parts

which are therefore approved for the use in ex- plosive

atmospheres.

•

Inside the Ex-atmosphere the equipment has to be

cleaned regularly. The intervals are to be defined by the

user in compliance with the environmental conditions

present at the place of operation.

•

After maintenance and repair works have been

performed, all barriers and notes removed for that

purpose have to be put back in their original place.

•

The flameproof joints differ from the tables of

IEC 60079-1 and should only be repaired by the

manufacturer.

Activity

Visual

inspection

3 months

Visual inspection of

positioner for intactness,

removal of dust

settlements

Check of electrical system

for intactness and

functionality

Check of entire system