Technical manual
MT 208-E
16
7.0 MAINTENANCE
7.1 GENERAL
Before carrying out any operation it is important to ascertain that the
regulator has been cut off both upstream and downstream and that the
pressure has been discharged in the sections of piping between the
regulator and the on/off valves.
The maintenance operations are closely associated with the quality of
the gas transported (impurities, humidity, gasoline, corrosive
substances) and with the efficiency of the filtering.
Preventive maintenance should be carried out at intervals which, if not
established by regulations, depend on:
-
the quality of the gas transported
-
the cleanliness and conservation of the piping upstream from the
regulator: in general, for example, when starting the equipment
for the first time, more frequent maintenance is required because
of the precarious state of cleanliness inside the piping
-
the level of reliability required from the regulation system
Before starting the disassembly operations on the apparatus you
should check that:
-
a set of recommended spares is available. The spares must be
original
Fiorentini
ones, bearing in mind that the more important
ones such as diaphragms are marked
-
a set of wrenches is available as specified in table 8
For a proper maintenance the recommended spare parts are
unequivocally identified by labels indicating:
-
the No of assembly drawing SR of the apparatus for which the
spare parts are suitable
-
the position showed in the assembly drawing SR of the
apparatus
N.B
. The use of non-original components relieves Pietro Fiorentini
S.p.A. of all responsibility.
If the maintenance is carried out by your own authorized personnel, we
recommend putting reference markings, before the disassembly, on
those parts which could have directional or reciprocal positioning
problems when reassembling. Finally, we would remind you that O-
Rings and sliding mechanical components (rods, etc.) must be
lubricated, before the re-assembly, with a fine
layer
of silicone grease.
7.2 APERFLUX
101
REGULATOR
MAINTENANCE PROCEDURE
PROGRAMMED PREVENTIVE
MAINTENANCE
Procedure for the disassembly, complete replacement of the
spare parts and reassembly of the APERFLUX 101 pressure
regulator.
PRELIMINARY OPERATION
A.
Put the regulator in safety conditions
B.
Ensure that upstream and downstream pressure are 0
DISASSEMBLING AND RE-ASSEMBLY
7.3 DISASSEMBLING THE REGULATOR UNIT
(Fig. 25)
1)
Unplug the fitting between the regulators and the outlet pressure
plug (impulse plug)
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