The summer is coming and it is very hot. Attention must be paid to thehigh temperature during the application of power supply equipment; theair-conditioner should be working for 24 hours a day; the indoor temperature ofmechanical room should be checked and recorded on a daily basis; it issuggested that the optimum temperature is 22 - 24 ℃.
   Meanwhile, the dust screen of air conditioner should be promptly cleaned up tomaintain the smooth air flow.