11
TECHNICAL MANUAL ICM
3L.P. GAS s.r.l.
6.0
MAINTENANCE
6.1
GENERAL
Before carrying out any operation it is important to
ascertain that the valve has been cut off both upstream
and downstream and that the pressure has been
discharged in the sections of piping between the val-
ve 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 valve: 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
3L.P.GAS
ones, bearing in
mind that the more important ones such as
diaphragms are marked
The use of non-original components relieves us of all
responsibility.
- A set of wrenches is available as specified in table
3.
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 reassembly, with a layer of sili-
cone grease.
