Ozwell E. Spencer (ãªãºã¦ã§ã«ã»Eã»ã¹ãã³ãµã¼, Ozuweru E SupensÄ) is one of Resident Evil's most important and mysterious characters. In the series, he is the owner and co-founder of the Umbrella Corporation, a pharmaceutical drug company that secretly manufactures bio-organic weapons.
These types of pumps give very reliable performance for a number of years. Unfortunately, life is hard for a motor stuck in the bottom of a well. The average lifespan of a pump is probably about 10-15 years. Some pumps will definitely go longer, while some stop working in less. One way or another, the pump will need to be replaced at some point. The pump to the left was in use for about 12 years.
It can vary, depending on how much the system is used and how regularly it is checked or serviced. Generally, the average life-span of units built in the 1970s and 1980s is about 15 years, but individual units may vary and last much longer depending on use and how well they are maintained.An ARI survey showed average heat pump life to be about 14 years when recommended maintenance procedures were followed.t can vary, depending on how much the system is used and how regularly it is checked or serviced. Generally, the average life-span of units built in the 1970s and 1980s is about 15 years, but individual units may vary and last much longer depending on use and how well they are maintained.