Olimpia splendid UNICO NEXT - Page 65

UNICO NEXT R290
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EN - 9
ENGLISH
4. The leaks electronic detectors may need calibration. If necessary,
calibrate them in a zone free of refrigerant.
5. Make sure the detector is not a potential source of combustion and
that it is suitable for the refrigerant used. The device for detection
must be set at a percentage of the refrigerant LFL and must be cal
-
ibrated for the used refrigerant; the appropriate percentage of gas
(maximum25%)mustbeconrmed.
6. Ifthepresenceofaleakissuspected,allopenamesmustberemoved.
Ifauidleakwhichrequiresbrazingisencountered,allrefrigerant
must be collected from the system or insulated (by means of shut
off valves) in a part of the system away from the leak. Then, bleed
nitrogen without oxygen (OFN) through the system both before and
after the brazing process.
7. In case it is necessary to carry out a hot work on the appliance, IT
ISNECESSARYtohaveapowderorCO2reextinguisheravailable.
8. To carry out a work which includes exposition of pipes which
containorcontainedaammablerefrigerant,DONOTusesources
ofcombustion.Riskofreorexplosion!
9. All sources of combustion (even a lit cigarette) should be kept away
fromtheplaceinwhichalloperationsduringwhichtheammable
refrigerant may be released in the surrounding space must be carried
out.
10.Makesuretheareaisadequatelyventilatedbeforeinterveninginside
the system; a continuous degree of ventilation must be present.
11. DO NOT use means different from those recommended by the
manufacturer in order to speed up the defrosting process or for
cleaning.
12. Before any operation, always check that:
• the condensers are unloaded.
The operation must be carried out safely to avoid the risk of pro
-
ducing sparks;
• there are no live electrical components and that the cables are
not exposed while loading, recovering or bleeding the system;
• there is continuity in the ground connection.