BIFFI ICON-030 - Disassembly and Re-Assembly; Repairs

December 2019
144
Installation, Operation and Maintenance Manual
VCIOM-08500-EN
Appendix
Appendix
C.8.2 Disassembly and Re-assembly
 CAUTION
Using a fastener other than the approved type may result in damage to the actuator or
valve. Refer to Table 7.
 CAUTION
Failure to use proper torque values can result in damage to the actuator and/or valve.
If disassembly and subsequent re-assembly of the explosion-proof enclosure is required,
take the necessary care to maintain all parts in their original condition.
To achieve this, the following steps must be taken:
• Do not damage the explosion-proof mating surfaces on the housing and on the
electrical enclosure cover.
• Reinstall all the screws that came with the dismantled parts and coat them with a
lm 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 lm of
Aeroshell grease.
C.8.3 Repairs
When needed, repairs may only be carried out using spare parts supplied by the manufacturer.
 WARNING
The values of gaps of explosion-proof joints are lower than the maximum specied on
Tables of IEC/EN 60079-1 Standard and the values of widths of the explosion-proof joints
are greater than the values specied in the tables of the Standard IEC/EN 60079-1. Should
maintenance require the replacement of any component that forms part of an explosion-
proof joint, only an original spare provided by Emerson can be used. Direct repair or
reconstruction of the above components is not permitted without Emerson authorization.
Not performing this procedure will invalidate the product safety and contractual guarantee.
Original spare parts must be ordered from the manufacturer; to ensure that correct
spares are provided, the serial number printed on the ICON3000 product label must be
specied when an order for spares is placed.