Thermal Protection - Franklin Electric FPS NCX Serie El Manual Del Propietario

Thermal Protection

IMPORTANT: A lack of or improper wiring of thermal and overload protection to the control panel will void
the warranty and Class 1 listing.
When fully submerged, the motor is a continuous duty type equipped with an automatic resetting heat sen-
sor and may restart unexpectedly. When connected with a panel that includes thermal overloads, the pump
may restart unexpectedly. Heat sensor opening is an indication of motor overloading/overheating, which
can be caused by application issues such as:
• an obstructed pump impeller
• switch stuck in the ON position
• pump running dry
• pump air locked
• pump short cycling
• operating the pump at low heads (low discharge restriction)
• excessively high or low voltage supply
• inadequate wiring
• incorrect motor connections
• mis-application of the product
• pump, motor, bearings, or seal that have reached the end of their useful life.
Any of these conditions must be corrected to extend the life of the pump.
MAINTENANCE
Thermal Protection
9