First to shut off air switch, open power resource switch, then start cyclone fan and electric heater, and check to insure no creepage then heat the drum.

• 首先合上空气开关，打开总电源以开关，随后开启离心风机，开启所需功率的电加热器，并检查是否漏电，如正常，即进行筒身预热。