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11 12 Only use original spare parts. Do not wait until the component is completely worn out, preventive replacements can
greatly improve performance and extend the life of the model. See the fan data table, Chapter 14 3, to identify fan and
conveyor replacement part numbers. Refer to example in Chapter 14 4
11 13 For maintenance of any accessories or components mounted on the model, refer to their user-manuals.
11 14 After every maintenance work, carry out the checks before commissioning according to Chapter 9 and after commissioning
according to Chapter 10
11 15 When repairing the system, be aware that even with non-flammable refrigerants (e.g. CO
medium), some traces of lubricating oil may be entrained and thus flammable mixtures may be created. It is therefore
recommended:
• do not smoke in the vicinity of the model or system;
• do not use naked flames in the vicinity of the model or system;
• avoid any contact between the fluid and the fire;
• remove any means of ignition from the installation site;
• only perform any welding or soldering repairs after the model and/or system has been completely drained. Avoid rele-
asing the fluid into the atmosphere.
11 16 In case of refrigerant leakage pay attention to the nature of the fluid used.
CO
in particular tends to stratify near the ground (see Chapter 1 24)
2
It is recommended to leave the installation site immediately and to activate the safety measures according to the regula-
tions in force in case of:
• visible continuous fluid leakage from the model or other parts of the installation;
• momentary but significant leakage of fluid from the model or other parts of the installation;
• feeling of discomfort by personnel;
• activation of CO
or other refrigerant alarm sensors;
2
In the event of operators feeling unwell, move away from the system and contact a doctor immediately. All operations
must be carried out by qualified personnel. The use of PPE is recommended (see Chapter 12). Ensure adequate venti-
lation of the working environment.
11 17 Always take into account the working pressure of the system. In particular, in the case of CO
pressure can reach 130 bar: in the event of a rupture, there is a risk of injury to persons or damage to property due to
the projection of debris, even from a great distance. Before carrying out any work, always make the system safe as per
current regulations. The use of PPE is recommended (see Chapter 12)
11 18 In the event of a leak of refrigerant fluid, check that it has not penetrated into rooms below or adjacent to the place of
installation: secure the rooms as per current regulations. In the case of CO
to stratify near the ground.
11 19 When dismantling and scrapping the unit, ensure that the appropriate PPE is used (see Chapter 12)
Ensure that the fluids are completely drained and properly disposed of. Pay particular attention to sharp edges.
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is used as an extinguishing
2
systems, the working
2
systems, consider the tendency of the fluid
2
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