Marco Jiang
26-06-2009, 10:46 AM
Hi, everyone, i am new here. According to CSA requirement:" 1.10.2 A system, unless constructed so it will not
burst due to expansion of the refrigerant when subjected
to abnormal outside temperatures, such as those
generated by a fire, shall be protected by one of the
following types of pressure relieving devices:
a. A safety valve having a 1/4-inch (6.4 mm)
outlet;
b. A rupture member having an outlet not less
than 1/16 inch (1.6 mm) in diameter; or
c. A fusible plug having a maximum fusing point
of 280 F (138 °C) and an outlet not less than
1/16 inch (1.6 mm) in diameter. "
We are following the C option. Consul and dometic are doing in different ways.Can anybody explain how to do this? Our questions:
1, When to weld the fusible plug into cooing unit? Before or after passivation/ painting?
2, if before passivation, will the oven temperature melt the alloy?
3, If after passivation, how to treat the pipe inside of fusible plug?
burst due to expansion of the refrigerant when subjected
to abnormal outside temperatures, such as those
generated by a fire, shall be protected by one of the
following types of pressure relieving devices:
a. A safety valve having a 1/4-inch (6.4 mm)
outlet;
b. A rupture member having an outlet not less
than 1/16 inch (1.6 mm) in diameter; or
c. A fusible plug having a maximum fusing point
of 280 F (138 °C) and an outlet not less than
1/16 inch (1.6 mm) in diameter. "
We are following the C option. Consul and dometic are doing in different ways.Can anybody explain how to do this? Our questions:
1, When to weld the fusible plug into cooing unit? Before or after passivation/ painting?
2, if before passivation, will the oven temperature melt the alloy?
3, If after passivation, how to treat the pipe inside of fusible plug?