Troubleshooting - STA-RITE Max-E-Pro Series Installation And User Manual

8

TROUBLESHOOTING

Read and understand all safety and operating instruction in this manual before servicing the Max-E-Pro
Pool/Spa Pump.
Only qualified personnel should electrically test the pump motor.
Problem Possible Cause
Failure to Pump Suction leaks / lost
Water; Reduced prime
Capacity or
Discharge Pressure
Clogged pipe or
impeller, or worn
impeller/diffuser
Electrical issue
Mechanical Trouble Suction and/or
and Noise discharge piping are
not properly supported
Pump is not properly
mounted
MAX-E-PRO Pool and Spa Pump Installation and User' s Guide
®
Corrective Action
Ensure pump volute and strainer basket are full of water. See Priming
the Pump on page 4.
Inspect for leaks in the suction piping.
Ensure suction pipe inlet is well below the water level to prevent pump
from sucking air.
Suction lift of 10 to 20 feet (3-6 M) will reduce performance. Suction lift
of more than 20 feet (6 M) will prevent pumping and cause pump to lose
prime. In either case, move pump closer (vertically) to water source.
Make sure suction pipe is large enough.
Ensure the strainer pot/basket is not clogged. If it is, clean the basket
and pot.
Ensure impeller is not clogged. Disassemble the pump according to
Pump Disassembly, on page 6. If a blockage in the impeller if found clear
the blockage and reassemble the pump according to Pump Reassembly,
on page 7.
Inspect the impeller and diffuser for wear. If either shows sign of damage
or major wear order replacement parts listed in the Parts List (pages 9
or 10) or Motor Chart (page 11).
Pump may be trying to push too high a column of water. If so, a "higher
head" pump is needed.
Pump may be running too slowly. Check voltage at motor terminals
and at the meter while pump is running. If low, see wiring instruction or
consult power company.
Inspect for loose electrical connections.
Pump may be too hot.
A. Check line voltage. If less than 90% or more than 110% of rated
voltage, consult a licensed electrician.
B. Increase ventilation to the pump.
C. Reduce ambient temperature.
D. Tighten any loose electrical connections.
See Piping, on page 1 for plumbing installation requirements and
recommendations.
Pump should be securely mounted to a concrete platform.
Self-Priming
®