Pentair Biffi ICON 2000 - Default Chapter; Dismantling and Reassembling; Periodic Inspections; Repairs

4
BIFFI ICON 2000 / ICON 2000 AD
Addendum d to InstructIon And operAtIng mAnuAl
8.3 REPAIRS
When needed, repair must only be carried out
with manufacturer’s original spare parts.
WARNING
The values of gaps of explosion-proof joints
are lower than the maximum specified on
tables of IEC/EN 60079-1 Standard. In case the
maintenance should require the replacement of
any component which forms part of an explosion-
proof joint, only an original spare provided by Biffi
MUST be used. Direct repair or reconstruction
of the above components are not permitted
without the Biffi permission. Not performing this
procedure will invalidate the product safety and
contractual guarantee.
Original spare parts must be required to the
manufacturer: to ensure that right spare
is provided, serial number printed on the
ICON 2000 unit enclosure label must be
specified when spares are ordered.
8.2 DISMANTLING AND REASSEMBLING
WARNING
In case the screws of the Ex-d covers must
been replaced, a SS AISI 316 Class A4 Grade 70,
must be used with minimum yield strength of
450 N/mm
2
.
In case a dismantling and subsequent
reassembling of the explosion-proof enclosure
is required, be careful to maintain all parts in
their original condition.
So the following procedure must be followed:
•Donotdamagetheexplosion-proofmating
surfaces on the housing and on the electrical
enclosure cover.
•Reinstallallthescrewsthatgowiththe
dismantled parts and block after spreading
them with a film of molybdenum-based
grease. This will keep screws from sticking
and make maintenance future operations
easier.
•Incasethescrewsneedtobechangeditis
mandatory to assure that the new screws are
of the same dimension and same material as
the original ones as stated in this manual, or
of a better quality.
•Replacetheweatherproofsealsthatmay
have been removed i.e: O-rings for the cover.
•Inparticular,besurethejointsurfacesofall
enclosures are spread with a film of Aeroshell
grease.
8. MAINTENANCE
WARNING
In case the unit already installed in HAZARDOUS
AREAS, need maintenance and/or any repair
work, this must be carried out by personnel
specifically qualified and fully trained for works in
HAZARDOUS AREAS.
8.1 PERIODIC INSPECTIONS
•Inspectthegeneralconditionsofthe
ICON 2000 at regular intervals: recommended
frequency of inspection is one time every two
years but this frequency could be changed
depending on the installation and working
conditions: any crack on the surface, broken
window or loose bolts must be reported for
repair.
•Keeptheexternalsurfacesoftheunitclean:
if the unit is installed in a dusty environment
the specification stated in IEC/EN 60079-14
to be followed ensuring in particular that the
dust layer does not exceed 5 mm.
•Checktheconditionofcableconnectionand
mounting bolts: any loose connection must be
amended.
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