I made up my mind to disassemble this fan to remove bad oil and supply new one, as this one was fabricated over 50 years ago, all of the case construction is thin metal armed with no engineering plastic moldings.
Disassembling and reassembling procedures were performed safe and it's original performance was reacquired again.
Removing all the sticky vanish like old lubricant from the shaft supporting plane bearing thoroughly is the key to success and supply new oil after that.
This fan is utilized not for direct cooling but for mixing up the cold air piled on the floor. Trifle care for air conditioning is effective especially while sleeping, 30 degree setting on the conditioner is enough with this small fan. No throat inflammation is recognized when getting up in the morning especially after these tropical nights.
This trifle technology is applied even in the cold season, by blowing up colder air to the heater blower on the ceiling surface, the temperature is kept in the even condition everywhere, the problem with hot face and cold legs inconvenient conditioning would disappear.
Standard electric fan is not always required for this purpose, even some smaller fun for cooling the ATX Tower computer if 12V DC might be supplied and set on the near part of the floor toward the blowout opening on the ceiling surface.
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