Operations on the pressure relief valve
EN
It is good practice to replace the pressure relief after every episode in which it opens. This is
because machining residues from components and pipes may build up on the valve seal, resulting
in the impairment of its sealing efficiency when it closes again.
Check the pressure relief valve (if present) every three years.
DANGER: Before replacing the valve, make sure the system is not pressurised or at
high temperature in the area in which you are about to work.
DANGER: Do not remove the pressure relief valve until you have recovered the
refrigerant present in the liquid receiver.
CAUTION: The pressure relief valves are maintenance free. Removal of the valve cap
or tampering with the seal are considered to be signs of unauthorised alteration of
the valve setting and will result invalidation of the manufacturer's warranty.
Inspection of the pressure relief valves is the exclusive responsibility of the competent
official organisations and is regulated by specific legislative provisions applicable in
the country of installation.
Disassembly and demolition
Check the prescriptions given at the beginning of Chapter 5 concerning the precautions to be
observed and the Personal Protective Equipment to be used.
5.3.1. Disassembly
In the case that it proves necessary to disassemble the partly completed machinery, perform the
procedure indicated below.
1.
Insulate the partly completed machinery from the electrical power supply.
2.
Referring to Paragraph 4.7 "Deinstallation", proceed to deinstall the partly completed
machinery; moreover, contact the Technical Offices of the Manufacturer to obtain the
necessary assistance during this intervention.
3.
To proceed to handle the partly completed machinery, operate in accordance with the
instructions reported in Paragraph 4.2 - Transport and Handling.
4.
Appropriately arrange the components based on the fact of whether they must be
transported to another premise (refer to Paragraph 4.2 - Transport and Handling), or
stored (refer to Paragraph 4.6 - Storage) or that they have to be demolished Paragraph
5.3.2 – Demolition and Disposal).
5.3.2. Demolition and disposal
When the partly completed machinery has ended its life-cycle, before proceeding to its final
dismantling, it is necessary to perform a series of operations aimed at minimizing the environmental
impact tied to the disposal of components of the partly completed machinery, as required by the
norms in force on waste disposal.
These operations are:
1.
Separate and stock the parts with environmental impact, in other words:
a)
separate the various parts that could be the cause of pollution;
b)
perform a selection of the materials in order to facilitate recycling, allotting them for
separate disposal (more specifically, sort elements in plastic or rubber).
2.
The gas contained inside the system must not be disposed of in the environment. The
thermal insulation of the buffer and the compressor oil are subjected to separate waste
collection; this is why we recommend that you dispose of the unit only in specialized
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