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Hisense D12CW Manual De Instrucciones página 7

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2.2 SAFETY PRECAUTIONS FOR SERVICING
Please follow these warnings when servicing a dehumidifier with R290.
2.2.1 Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are
necessary to ensure that the risk of ignition is minimised. For any repair to the refrigerating
system, the following precautions should be complied with prior to conducting work on the
system.
2.2.2 Work procedures
Work should be undertaken under a controlled procedure so as to minimise the risk of a
flammable gas or vapour being present while the work is being performed.
2.2.3 General work area
All maintenance staff and others working in the local area should be informed of the nature
of the work being carried out. Working in confined spaces should be avoided, and the area
around the workspace should be sectioned off. Ensure that the conditions within the area
have been made safe by checking for flammable material.
2.2.4 Checking for presence of refrigerant
The area should be checked with an appropriate refrigerant detector prior to and during work,
ensuring the technician is aware of potentially flammable properties. Ensure that the leak
detection equipment being used is suitable for use with flammable refrigerants, i.e., non-
sparking, adequately sealed or intrinsically safe.
2.2.5 Presence of fire extinguisher
If any work involving heat is to be conducted on the refrigeration equipment or any associated
parts, the appropriate fire extinguishing equipment should be available to hand. Have a dry
powder or Co2 fire extinguisher adjacent to the charging area.
2.2.6 No sources of ignition
No person carrying out work in relation to a refrigeration system which involves exposing any
pipework that contains or has contained flammable refrigerant should use any sources of
ignition in such a manner that it may lead to the risk of fire or explosion. All possible sources
of ignition, including cigarette smoking, should be kept sufficiently far away from the site of
installation, repair, removal and disposal, during which the flammable refrigerant has the
potential to be released into the surrounding area. Prior to work taking place, the area around
the equipment is to be surveyed to make sure that there are no flammable hazards or ignition
risks. "No Smoking" signs should be displayed.
2.2.7 Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before opening up the
system or conducting any work that involves heat. A certain amount of ventilation should be
maintained during the time in which the work is being carried out. This ventilation should
safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
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