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8. Don't fill the tank to its full capacity (the liquid injection volume does not exceed 80% of
the tank vol u me).
9. Even the duration is short, it must not exceed the maximum working pressure of
the tank.
10. After the completion of the tank filling and the end of the operation process, you
should make sure that the tanks and equipment should be removed quickly and all
closing valves in the equipment are closed.
11. The recovered refrigerants are not allowed to be injected into another system before
being purified and tested.
Note: The identification should be made after the appliance is scrapped and refrigerants
are evacuated. The identification should contain the date and endorsement. Make sure
the identification on the appliance can reflect the flammable refrigerants contained in this
appliance.
Recovery:
1. The clearance of refrigerants in the system is required when repairing or scrapping the
appliance. lt is recommended to completely remove the refrigerant.
2. Only a special refrigerant tank can be used when loading the refrigerant into the
storage tank. Make sure the capacity of the tank is appropriate to the refrigerant
injection quantity in the entire system. AII tanks intended to be used for the recovery of
refrigerants should have a refrigerant identification (i.e. refrigerant recovery tank).
Storage tanks should be equipped with pressure relief valves and globe valves and
they should be in a good condition. lf possible, empty tanks should be evacuated and
maintained at room temperature before use.
3. The recovery equipment should be kept in a good working condition and equipped with
equipment operating instructions for easy access. The equipment should be suitable
for the recovery of R290 refrigerants. Besides, there should be a qualified weighting
apparatus which can be normally used. The hose should be linked with detachable
connection joint of zero leakage rate and be kept in a good condition.
Before using the recovery equipment, check if it is in a good condition and if it gets
perfect maintenance. Check if II electrical components are sealed to prevent the
leakage of the refrigerant and the fire caused by it. lf you have any question, please
consult the manufacturer.
4. The recovered refrigerant shall be loaded in the appropriate storage tanks, attached
with a transporting instruction, and returned to the refrigerant manufacturer. Don't mix
refrigerant in recovery equipment, especially a storage tank.
5. The space loading R290 refrigeration can't be enclosed in the process of
transportation. Take anti electrostatic measures if necessary in transportation. In the
process of transport, loading and unloading, necessary protective measures must be
taken to protect the air conditioner to ensure that the air conditioner is not damaged.
6. When removing the compressor or clearing the compressor oil, make sure the compressor
is pumped to an appropriate level to ensure that there is no residual R290 refrigerants
in the lubricating oil. The vacuum pumping should be carried out before the compressor
is returned to the supplier. Ensure the safety when discharging oil from the system.
Maintenance Notice
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