For best results, Shurflo’s 9300 Series submersible solar pumps should be maintained on a
regular basis. Regularly scheduled maintenance can prevent expensive damage that may occur if
components are run until failure and insures that your water supply is not interrupted
unexpectedly.
Your preventive maintenance schedule should take into account the load, hours of operation and
design of your water system. Your 9300 pump consists of two main parts — the pumphead and
the motor. Motor load (well depth) and rpm (array size and voltage) are the main factors that
determine motor life. Deeper wells should be maintained more frequently because the motor
works harder to bring water to the surface. Larger arrays tend to run the motor at higher rpm and
for more hours during the day than smaller arrays, so maintenance that is more frequent is
required.
Pump load (well depth) and rpm (array size and voltage) are the main factors that determine
pump life. Again, maintenance should be scheduled more frequently for deeper wells and for
systems with larger solar arrays, (150 watts vs. 100 watts, for instance). Water system designs
using float switches, water level probes or other control devices only operate when required, so
maintenance intervals tend to be longer.
The information below is a guideline to help implement your initial preventative maintenance schedule.
Maintenance frequency will depend on many factors including cleanliness of the water, total
hours of operation, etc., and should be determined by your experience at each well site.
Well Depth 230 Feet Diaphragm Life* 4,000 Hrs Motor Brush Life* 5,000 Hrs. Maintenance Hours 2,500 Hrs. Gallons* 165,000 Gallons
Well Depth 100 Feet Diaphragm Life* 7,000 Hrs Motor Brush Life* 10,000 Hrs. Maintenance Hours 5,500 Hrs. Gallons* 420,000 Gallons
*The information shown in the above chart is for maintenance guidelines only and is not a
statement of warranty.
For more information on pump maintenance, please consult the 9300 Owner’s Manual