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8. Loading procedure
In addition to conventional loading procedures, the following requirements must be followed.
-
Ensure that no contamination of different refrigerants occurs when using the loading
equipment. Hoses or lines should be kept as short as possible to minimise the amount of
refrigerant contained in them.
-
Cylinders must be kept in an upright position.
-
Ensure that the refrigeration system is grounded before loading the system with
refrigerant.
-
Tag the system when charging is complete (if not already).
-
Extreme care must be taken to avoid overfilling the cooling system.
Before reloading, the system must be pressure-tested with oxygen-free nitrogen. The system
shall be leak-tested upon completion of loading, but prior to commissioning. A subsequent
leakage test must be carried out before leaving the site.
9. Commissioning
Before carrying out this procedure, it is essential that the technician is thoroughly familiar with
the equipment and all its details. It is recommended good practice that all refrigerants are
safely recovered. Before the task is carried out, a sample of oil and refrigerant should be taken
in case an analysis is required before the recovered coolant is reused. It is essential for there to
be power before starting with the task.
A.
It is important to get familiar with the equipment and its operation.
B.
Electrically isolate the system.
C.
Before attempting the procedure, ensure that:
-
the mechanical-handling equipment is available, if required, for the handling of refrigerant
cylinders;
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all personal protective equipment is available and correctly used;
-
the recovery process is supervised at all times by a competent person;
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cylinders and recovery equipment conform to appropriate standards.
D.
Pump the cooling system, if possible.
E.
If vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
F.
Ensure that the cylinder is positioned on the scale before recovery takes place.
G.
Switch on the recovery machine and operate it according to the manufacturer's
instructions.
H.
Do not overfill cylinders (no more than 80% of the liquid charge by volume).
I.
Do not exceed the maximum working pressure of the cylinder, even temporarily.
J.
When the cylinders have been correctly filled and the process is complete, ensure that
the cylinders and equipment are promptly removed from the site and that all equipment
isolation valves are closed.
K.
Recovered refrigerant must not be charged to another refrigeration system, unless
cleaned and checked.
FORCECLIMA 7100 SOUNDLESS
ENGLISH
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