Saneo JHS-A020-12KR2/B Manual De Usuario página 41

equipment must be available within easy reach. A dry powder or CO2 extinguisher must be located near the loading
area.
- Absence of ignition sources
No person performing work related to a refrigeration system involving the exposure of pipes that contain or have
contained flammable refrigerants shall use ignition sources in a manner that may lead to a risk of fire or explosion. All
possible sources of ignition, including a person smoking a cigarette, should be located far enough from the
installation, repair, removal and disposal site during the period when the flammable refrigerant can flow into the
surrounding space. Before carrying out the work, the area surrounding the equipment must be examined to ensure
that there are no dangers or risks of ignition. "No smoking" signs should be displayed.
- Ventilated areas
Make sure that the area is outdoors or adequately ventilated before working on the system or performing any work
that causes heat. A ventilation of a given degree must continue during the work. Ventilation should safely disperse
any refrigerant emitted and preferably expel it to the outside into the atmosphere.
- Audits of refrigeration equipment
When electrical components are changed, they must be adapted to their intended use and to the correct specification.
The manufacturer's maintenance and service guidelines must be followed at all times. In case of doubt, consult the
manufacturer's technical support service.
The following checks shall be applied to installations using flammable refrigerants:
- The size of the charge is in accordance with the size of the room in which the elements containing a refrigerant are
installed;
- the machinery and ventilation valves are working properly and are not obstructed;
- if an indirect refrigeration circuit is used, the secondary circuit must be checked for the presence of refrigerant;
- the marking of the equipment continues to be visible and legible. Marks and symbols that are illegible must be
corrected;
- the refrigeration pipe or components are installed in a position where they are not likely to be exposed to a
substance that may corrode elements containing refrigerants, unless these elements are constructed with materials
that are inherently resistant to corrosion or that are adequately protected against corrosion.
- Checking of electrical devices
Repair and maintenance operations on electrical components must include initial safety checks and component
inspection procedures. In the presence of a fault that may compromise safety, no power supply shall be connected to
the circuit until the fault has been satisfactorily addressed. If the defect cannot be corrected immediately but it is
necessary to continue the operations, an appropriate temporary solution must be used. This should be
communicated to the owner of the equipment so that all parties involved are aware of it.
Initial security checks should include:
- checking that the capacitors are discharged: this must be done in a safe way to avoid any possibility of sparks;
- Verification that no live electrical components or wiring are exposed during charging, recovery or purging of the
system;
- verification that there is continuity of the equipotential bonding to earth.
- Repairs of hermetic components
During repairs of hermetic components, all power supplies must be disconnected from the equipment undergoing
operations before any removal of hermetic covers, etc. If it is absolutely necessary to supply the equipment with
electricity during service operations, a continuously operating leak detection device must be located at the most
critical point to give warning in case of a potentially dangerous situation.
Particular attention should be paid to the following to ensure that when working on electrical components, the
enclosure is not altered in a way that alters the level of protection. This should include damage to cables, excessive
number of connections, terminals that do not meet the original specification, damage to seals, incorrect adjustment