A.1.
Inspection of the site
Prior to servicing with
fl
ammable refrigerants
,
a safety inspection must be performed to
ensure that the risk of
fi
re is minimized. When servicing the refrigeration system
,
the
following precautions should be observed before handling the system.
A.2.
Operating procedure
Work should be performed under controlled procedures to ensure that the risk caused by
combustible gases or vapors during operations is lowest.
A.3.
General working area
All maintenance personnel and other personnel in the work area should be aware of the
nature of the work being performed and should work within a con
fi
ned space that should be
avoided. The work area should be properly segregated to ensure the safety of working
conditions in the work area by controlling combustible materials.
A.4.
Check if the refrigerant is present
Pre-operation and during operation should be monitored in the area using an appropriate
refrigerant monitor to ensure that the technicians are aware of the presence of potentially
fl
ammable gases and that all leak detection equipment is suitable for
fl
ammable refrigerants
,
such as
:
no spark
,
fully enclosed or intrinsically safe.
A.5.
Fire extinguisher placement
When performing heat-processing operations on the refrigeration system or related
components
,
the appropriate
fi
re extinguisher should be located nearby and the refrigerant
injection area should be equipped with a dry powder or carbon dioxide
fi
re extinguisher.
A.6.
Prohibition of
fi
re
When working in connection with exposed pipelines that contain or have contained
fl
ammable refrigerants
,
all forms of ignition sources that may cause
fi
re or danger to the
station should not be used. All sources of ignition
,
including smoking
, are combustible. The
agent may be released into the surrounding environment. It must be far
away from the area
where it is installed
,
repaired
,
relocated or disposed. Before starting work
,
the surrounding
environment of the equipment must be inspected strictly to ensure that there is no danger of
fl
ammability or
fi
re
,
should set up the mark of “
N
o Smoking”.
A.7.
Ventilated area
Ensure that the work area is open or fully ventilated before opening the system or performing
hot work operations. Ventilation should be maintained during operation. Ventilation will safely
dilute the leaked refrigerant and quickly release it into the atmosphere.
A.8.
Inspection of refrigeration equipment
If you replace electrical components
,
these electrical components should be installed in
accordance with the day-to-day and night-time operating regulations. At all times
,
the
manufacturer's maintenance and repair guides should be followed. If in doubt
,
consult
PRODUCT REPAIR
Warning
:
The appliace should b stored in a well-ventilated room. The area of the room
the manufacturer's technical department.
should be equal to the room area required for maintenance.
--Warning
:
Appliances should be stored in rooms where there is no continuous burning
fi
re
(such as ignited gas appliances) and ignition sources(such as electric heaters at work)
---All operators or refrigeration circuit maintenance personnel should obtain a valid
certi
fi
cate issued by an industry-approved assessment agency to determine their quali
fi
cation
for safe disposal of refrigerants as required by the industry-approved assessment speci
fi
cation.
---The maintenance and repair of the equipment can only be carried out according to the
method recommended by the equipment manufacturer. If other professionals are required to
assist in the maintenance and repair of the equipment
,
they should be supervised by
personnel quali
fi
ed to use
fl
ammable refrigerants.
17
Summary of Contents for MDB-16150HIW
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