21. UNIT MAINTENANCE
21.1 General warnings
Maintenance allows you to:
• Keep the unit efficient.
• Prevent possible breakdowns.
• Reduce the rate of deterioration of the unit.
It is advisable to provide a unit booklet with the purpose of keeping track of the interventions carried out on
the unit, facilitating the potential search for faults.
The maintenance operations must be carried out in compliance with all the prescriptions of the previous
paragraphs.
Use personal protective equipment as required by current regulations.
21.2 Access to the unit
Access to the unit once it has been installed must be allowed only to authorised operators and technicians.
The owner of the machine is the legal representative of the company, body or natural person who owns the plant where the
machine is installed.
He is responsible for observing all the safety rules indicated in this manual and in the regulations in force.
21.3 Periodical checks
Commissioning operations must be carried out in accordance with all the requirements of the previous para-
graphs.
All operations performed on the unit must be carried out by qualified personnel in compliance with the nation-
al legislation in force in the country of destination.
Every 6 months
It is good practice to carry out periodic checks to ensure that the unit, control and safety devices are functioning correctly.
• Check that the electrical terminals inside the electrical cabinet are secure.
• Periodically clean the mobile and fixed contacts of the contactors.
• Check that there are no water leakages in the hydraulic circuit..
• Check the condition of the finned coils, if necessary clean with compressed air in the opposite direction to the air flow.
If the coil is completely clogged, clean it with a low-pressure cleaner, taking care not to damage the aluminium fins..
• Check the attachment and balance of the fans.
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