Maintenance Notice
75
USER'S MANUAL
3.
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
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
analyze 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.
If 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.
6.
Before the start of the recovery, you should ensure that the capacity of
the storage tank is sufficient.
7.
Start and operate the recovery equipment according to the
manufacturer's instructions
