Klarstein WINDWAKER Mode D'emploi page 87

4. Through blowing process, the system is charged into the anaerobic nitrogen to
reach the working pressure under the vacuum state, then the oxygen free nitrogen
is emitted to the atmosphere, and in the end, vacuumize the system. Repeat this
process until all refrigerants in the system is cleared. After the final charging of the
anaerobic nitrogen, discharge the gas into the atmosphere pressure, and then the
system can be welded. This operation is necessary for welding the pipeline.
Procedures of charging refrigerants
As a supplement to the general procedure, the following requirements need to be
added:
• Make sure that there is no contamination among different refrigerants when using
a refrigerant charging device. The pipeline for charging refrigerants should be as
short as possible to reduce the residual of refrigerants in it.
• Storage tanks should remain vertically up.
• Make sure the grounding solutions are already taken before the refrigeration system
is charged with refrigerants.
• After finishing the charging (or when it is not yet finished), label the mark on the
system.
• Be careful not to overcharge refrigerants.
Scrap and Recovery
The clearance of refrigerants in the system is required when repairing or scrapping the
appliance. It is recommended to completely remove the refrigerant.
Before this procedure, the technical personnel shall be thoroughly familiar with the
equipment and all its features, and make a recommended practice for refrigerant safe
recovery. For recycling the refrigerant, shall analyse the refrigerant and oil samples
before operation. Ensure the required power before the test.
1. Be familiar with the equipment and operation.
2. Disconnect power supply.
3. Before carrying out this process, you have to make sure:
• If necessary, mechanical equipment operation should facilitate the operation of
the refrigerant tank.
• All personal protective equipment is effective and can be used correctly.
• The whole recovery process should be carried out under the guidance of
qualified personnel.
• The recovering of equipment and storage tank should comply with the relevant
national standards.
4. lf possible, the refrigerating system should be vacuumized.
5. If the vacuum state can't be reached, you should extract the refrigerant in each part
of the system from many places.
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