Modine EGK Serie Manual Tecnico página 63

11.10 Clean the surfaces of the finned pack and of the fans at least once every six months.
11.11 Cleaning of the finned pack:
11.11.1 Place the main switch in the "OFF" position and wait until all the fans have stopped rotating and that the
hot surfaces have cooled down. Remove the conveyor - fan group by unscrewing the retaining screws.
11.11.2 Use compressed air at a maximum pressure of 10 bar and at a minimum distance of 150 mm, directed
perpendicularly against the finned pack to avoid bending or damage to the fins.
11.11.3 Use a jet of water at a max pressure of 50 bar for damp dirt or grease at a minimum distance of
150 mm, directed perpendicularly against the finned pack, avoiding bends or damage to the fins and
pipes. If appropriate add a neutral detergent (refer to its instructions for use). Rinse and then dry
with compressed air as indicated in point 11.11.2. Make sure that the electrical components are not
affected by the jet of water. If necessary, provide adequate coverage.
11.11.4 Aspirate possibly from the air inlet side.
11.11.5 After having cleaned the finned pack, perform a visual inspection to identify any dirt or the presence of
fins that are damaged (repeat the cleaning operation if necessary).
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 fan data table section 14.3 to identify
fan and conveyor replacement part numbers, refer to example in section 14.4.
11.13 For maintenance of any accessories or components fitted to the model refer to their user manuals.
11.14 After any maintenance work, perform pre-commissioning checks according to Section 9 and post-commissioning
checks according to Section 10.
11.15 When repairing the system, be aware that even with non-flammable refrigerants (e.g. CO
extinguishing 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 releasing 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 Sect. 1.22).
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It is recommended to leave the installation site immediately and to activate the safety measures according to
the regulations in force in case of:
• visible continuous fluid leakage from the model or other parts of the installation;
90°
is used as an
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