Riello NXHP Series Installation, Operation And Maintenance Instructions page 8

1 - INTRODUCTION
Inhalation of high concentrations of vapour
is harmful and may cause heart irregularities,
unconsciousness, or death. Vapour is heavier
than air and reduces the amount of oxygen
available for breathing. These products cause
eye and skin irritation. Decomposition
products can be hazardous.
Short-circuit power (3-phase models only)
It is the responsibility of the installer or user
of the equipment to ensure, by consultation
with the distribution network operator if
necessary, that the equipment is connected
only to a supply with a short-circuit power Ssc
greater than or equal to 3,8 MVA.
1.2.2 - Pressurized equipment and
components
These products incorporate pressurized
equipment or components, produced by external
suppliers. We recommend that you consult your
appropriate national trade association or the
original supplier of the pressure equipment or
component (declaration, re-qualification, retesting,
etc.). The characteristics of this equipment/these
components are given on the nameplate or in the
required documentation, supplied with the
products.
The units are intended to be stored and operated
in an environment where the ambient temperature
must not be less than the lowest allowable
temperature indicated on the nameplate.
Do not introduce significant static or dynamic
pressure with regard to the operating pressures
used during operation or for tests in the
refrigerant circuit or in the heat exchange
circuits.
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NOTES:
Monitoring during operation, re-qualification,
re-testing, exemption from retesting:
■ Follow all applicable regulations on the
m o n i t o r i n g o f p r e s s u r e - c o n t a i n i n g
equipment.
■ The user or the operator is usually requested
to create and maintain a monitoring and
maintenance register.
■ F o l l o w t h e
recommendations, whenever they exist.
■ Regularly monitor the surface of the
components to detect cavernous corrosion.
To do this check an uninsulated part of the
pressure vessel or at a joint in the insulation.
■ Regularly check for possible presence of
impurities (e.g. silicon grains) in the heat
exchange fluids. These impurities can
cause wear and/or pitting corrosion.
■ Filter the heat exchange fluid.
■ The reports of the periodical checks by the
user or the operator must be included in the
monitoring and maintenance register.
REPAIR:
Any repair or modification of a pressure
vessel is prohibited.
Only the replacement of the vessel by an
original part from the manufacturer is allowed.
In this case, the replacement must be carried
out by a qualified technician. The replacement
of the vessel must be entered in the monitoring
and maintenance register.
RECYCLING:
The pressure equipment can be recycled in
whole or in part. After use they may contain
refrigerant vapours and oil residue. Some
parts are painted. Follow applicable regulation
for the disposal and recycling of pressurised
equipment.
l o c a l p r o f e s s i o n a l