ABB Ability 800xA Series User Manual page 117

C Linking Device for Zone 2 Explosion and Protection Environment
C.4 Maintenance and Repair
Visual inspection: defines an inspection that identifies, without the use of access
equipment and tools, those defects, such as missing bolts, that will be apparent to the
eye.
Close inspection: defines an inspection that encompasses those aspects covered by a
visual inspection and, in addition, identifies those defects, such as loose bolts, that will
be apparent only be the use of access equipment, e. g. steps, where necessary, and
tools.
Detailed inspection: defines an inspection that encompasses those aspects covered by
a close inspection and, in addition, identifies those defects, such as loose terminations,
that will only be apparent by opening the enclosure, and/or using, where necessary,
tools and test equipment
• Maintenance works are to be carried out by qualified personnel only, that is.
personnel qualified according to TRBS 1203 or equivalent.
• Auxiliary components that meet all requirements of European and national directives
and legislation can be used in potentially explosive atmospheres
• Components may only be replaced by original spare parts that are approved for the
use in Ex atmospheres.
• The equipment must be serviced and cleaned regularly inside the Ex atmosphere.
The intervals must be defined by the operator in compliance with the environmental
rules valid at the place of operation.
• After maintenance and repair works have been performed, all barriers and sign
boards used for that purpose must be restored in their original place.
• In case faults of the equipment are noticed, remove the equipment. The inner parts
cannot be maintained by the customer. Instead, send the equipment to the
manufacturer for inspection.
The following table details the frequency of inspection for LD 810HSE Ex devices:
Table C.1: Maintenance Intervals
Activity
Visual inspection of Linking
Device for intactness, removal of
dust settlement
Check of entire system
1. Frequency can be shortened or extended considering the local conditions.
2PAA114135-610
Monthly Visual
Inspection
Yes
Operator's responsibility
Close Inspection
every 6 Months
1
Detailed Inspection
every 12 Months
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