♦
Blowing-off should be performed as follows before starting the normal boiler operation at least once a day(one day
is 8 hour basis):
1) Check whether the water level in the tube is normal.
2) Close the main steam valve(ignite according to instruction for operation start on P.9).
3) Operate the boiler ,and if steam pressure is reached up to 1.5 - 2 kg/cm2, the operation switch “OFF”.
4) After post purge, the power switch “OFF”.
5) Open the blowing-off valve and perform blowing-off.
6) If steam pressure is 0 kg/cm2, open the air extraction valve and perform blowing-off continuously. After finished
the blowing-off, close the blowing-off valve.
7) Power switch “ON”. Close the air extraction valve when the water is feeded by the feed water pump and the air has
been exhausted completely. Check whether the water level is normal.
* Blowing-off is not necessary everyday when operation load is not much.
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