Issue/Rev. 0.1 (2/20) ║ MN06201 • Page 67
13 – Maintenance
13.1
Enclosure Maintenance
Flame Path Inspection Criteria
Models: ALIV-QT-XP or ALIV-ST-XP
WARNING:
To prevent ignition of hazardous atmospheres, disconnect from main power
supply before opening the cover.
i.
Installation/inspection/maintenance/repair/overhaul/reclamation of the AccuLoad in
the European Union must be performed by qualified personnel in accordance with
the applicable requirements of EN 60079-14, EN 60079-17, and EN 60079-19 in
addition to all local codes/regulations.
ii.
Installation/inspection/maintenance/repair/overhaul/reclamation of AccuLoad’s
relying upon the IECEx certification must be performed by qualified personnel in
accordance with the applicable requirements of IEC 60079-14, IEC 60079-17, and
IEC 60079-19 as required by local codes/regulations.
iii.
Guidance for equipment inspection and maintenance is provided by EN/IEC 60079-17:
“Electrical Apparatus for explosive gas atmospheres, “Inspection and maintenance
of electrical installations in hazardous areas” and should be utilized for the
inspection / maintenance process.
iv.
When performing maintenance that requires opening of the enclosure cover, all
flame paths, which are defined as the machined flanged surface between the
housing and the cover, shall be inspected to ensure that they are clean and
undamaged, no scratches, nicks, corrosion, or other defects that would affect the
integrity of the flame path are allowed. If defects are detected the equipment should
not be placed back into service until the issues are resolved.
v.
Verify that all tapped cover bolt threaded locations in the enclosure are clean and
intact with no missing/stripped threads.
vi.
Verify that the cover bolts are the required M8 x 1.25-6g, Din 912, Steel Grade
12.9. Prior to reassembly apply a light coating of nickel based anti-seize such as
TechnipFMC P/N (646002401) to all bolt threads.
vii.
Verify that any blind threaded cover bolt holes do not have excessive grease /
anti-seize packed into them as this could cause hydraulic fractures of the enclosure
when the bolts are tightened.
viii.
Inspect to see that the environmental O-ring is correctly installed (seated into the
groove) and in good condition, no cracks etc. If defective replace to maintain
environmental protection. Grease cover flange with petroleum jelly or TechnipFMC
grease (P/N 644886401) before reattachment of the cover to the housing.
ix.
Follow cover bolt torquing procedure as outlined in section 12. When complete,
verify the flame path gaps as per the procedure.
AccuLoad IV Installation and Maintenance Manual
Maintenance
Содержание ALIV-QT-XP
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