172-65702M-04 (SQ-C01) 10 Dec 2020
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6. Precautions before connecting to piping
Make sure to flush the steam piping and water supply piping before connecting
the unit. The purpose of flushing the piping is different from the initial blowdown,
which is carried out to discharge condensate before operation. Flushing is
performed to remove the residual sealing material, metal chips, sand or scale in
the piping. Therefore, it is necessary to vigorously flush the piping from as large
an opening as possible. Keep personnel and components away from the opening
when flushing the piping. Sealing material or dust entering the piping may cause
problems such as deterioration of heat transfer efficiency, improper operation of
the unit, valve leakage, etc.
