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1.5 INTERVENTION AND MAINTENANCE
It is important to remember that the user manual can never replace adequate user experience. This manual represents a reminder
of the main activities to be performed by operators who have received specific training, for example by attending training courses
held by the manufacturer, with reference to particular maintenance operations.
Carefully read the following recommendations:
- constant and precise preventive maintenance always guarantees the high operational safety of the unit. If there are some
necessary maintenance interventions, do not delay them and make reference only to qualified operators and original spare-parts;
- schedule each task with care;
- The operators’ working space should be clean and free in order to grant the necessary movements without dangers.
- Operators should avoid clumsy operations, in uncomfortable conditions which can compromise their balance.
- Operators must pay attention to the risk of clothing and/or hair being caught or entangled in moving parts. A cap should be worn
to keep long hair in place.
- The use of chains, bracelets and rings can also be dangerous.
- Even the use of necklaces, bracelets and rings can be a danger. The working place should be correctly lighted; insufficient or
excessive lights can be a danger;
- wait about 30 minutes after switching the unit off before performing any maintenance in order to prevent burns;
- do not repair high pressure pipes with welds;
- pressure liquids on the refrigerant circuits and electrical components presence can be dangerous
during installation and maintenance operations;
- reduce as far as possible the time of opening for the refrigerant circuit. Oil exposition to air causes the absorb of high quantity of
humidity and this leads to the creation of weak acids;
- only qualified personnel may perform work on the unit;
- before performing any kind of work or maintenance on the unit, make sure it has been disconnected from the power supply;
- make sure that safety devices work properly and that there are no doubts about their functioning; if not do not start the unit;
- use only tools prescribed by the unit manufacturer. In order to avoid personal injury, do not use worn or damaged, low quality or
improvised tools;
once the unit has been cleaned, the operator must check that there are no worn or damaged
parts or parts that are not firmly secured; where these are found, request the intervention of the
maintenance technician;
- always keep the area in which the unit is kept clean and tidy. Oil and grease stains, broken tools or broken pieces are harmful to
persons as they can cause slips or falls;
- it is prohibited to use flammable fluids to clean the unit.
Do not use diesel, petroleum or solvents to clean the unit as they leave an oily film that encourages dust to settle, while solvents
(even if weak) damage the paintwork and encourage the formation of rust. If a jet of water penetrates the electrical equipment, the
contacts oxidise and the unit may malfunction. Therefore, do not use jets of water or steam on the sensors, connectors or any
electrical part.
Make sure that the pressurised pipes, or other components subject to wear, are intact. Also make sure there are no leaking fluids or
hazardous substances.
Should there be a leak, the operator must not restart the unit before having resolved the problem.
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