FRANKLIN ELECTRIC SUBMERSIBLE MOTORS 6-8″
Franklin Electric submersible motors are a water-lubricated design. The fill solution consists of a mixture of deionized water and propylene glycol(a non-toxic antifreeze).
The solution will prevent damage from freezing temperatures to -40F (-40C) motors should be stores in areas that do not go below this temperature. The solution will partially freeze below 27F (-3C) BUT NO DAMAGE OCCURS. Repears freezing and thawing should be avoided to prevent possible loss of fill solution. There may be an interchange of fill solution with well water during operation. Care must be taken with motors removed from wells during freezing conditions to prevent damage.
Frequency of Starts
The average number of starts per day over a period of months or years influences the life of a submersible pumping system. Excessive cycling affects the life of control
components such as pressure switches, starters, relays, and capacitors. Rapid cycling can also cause motor spline damage, bearing damage, and motor overheating. All these conditions can lead to reduced motor life.
The pump size, tank size, and other controls should be selected to keep the starts per day as low as practical for longest life.
Motors should run a minimum of one minute to dissipate heat build up from starting
current. Six inch and larger motors should have a minimum of 15 minutes between starts
or starting attempts.