HTW IX90S-R32C Manual De Usuario E Instalacion página 39

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Safety operation of flammable refrigerant
Welding
If you should cut or weld the refrigerant system pipes in the process of maintaining, please
follow the steps as below:
1. Shut down the unit and cut power supply.
2. Eliminate the refrigerant.
3. Vacuuming.
4. Clean it with N2 gas.
5. Cutting or welding.
6. Carry back to the service spot for welding.
The refrigerant should be recycled into the specialized storage tank.
Make sure that there isn't any naked flame near the outlet of the vacuum pumpand it's
well-ventilated.
Filling the refrigerant
1. Use the refrigerant filling appliances specialized for R32. Make sure that different kinds
of refrigerant won't contaminate with each other.
2. The refrigerant tank should be kept upright at the time of filling refrigerant.
3. Stick the label on the system after filling is finished (or haven't finished).
4. Don't overfilling.
5. After filling is finished, please do the leakage detection before test running; another time
of leak detection should be done when it's removed.
Safety instructions for transportation and storage
1. Please use the flammable gas detector to check before unload and open the container.
2. No fire source and smoking.
3. According to the local rules and laws.
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