Welding
1. If you should cut or weld the refrigerant system pipes in the process of maintain-
ing, please follow the steps as below
a. Shut down the unit and cut power supply
b. eliminate the refrigerant
c. vacuuming
d. clean it with N
2
gas
e. cutting or welding
f. carry back to the service spot for welding
2. The refrigerant should be recycled into the specialized storage tank.
and it’s well-ventilated.
Filling the refrigerant
fer-
ent kinds of refrigerant won’t contaminate with each other.
another time of leak detection should be done when it’s removed.
Safety instructions for transportation and storage
container.
3. According to the local rules and laws.
20
