8
DYNA-PRO
®
Self-Priming Pool/Spa Pump Installation and User’s Guide
TROUBLESHOOTING
Read and understand all safety and operating instruction in this manual before servicing the Dyna-Pro
®
Self-Priming Pool/
Spa Pump.
Only qualified personnel should electrically test the pump motor.
Problem
Possible Cause
Corrective Action
Failure to Pump
Water; Reduced
Capacity or
Discharge Pressure
Suction leaks / lost
prime
Clogged pipe or
impeller, or worn
impeller/diffuser
Electrical issue
Inspect for leaks in the suction piping.
Ensure suction pipe inlet is well below the water level to prevent pump
from sucking air.
Inspect strainer pot lid o-ring. If damaged, replace.
Ensure pump is not attempting to lift water more than 10 feet (3m).
Ensure the suction pipe is at least 2” in diameter.
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
(page 10)
or
Motor Table
on page 9.
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.
Mechanical Trouble
and Noise
Suction and/or
discharge piping are
not properly supported
Pump is not properly
mounted
See
Piping
, on page 1 for plumbing installation requirements and
recommendations.
Pump should be securely mounted to a concrete platform.
Summary of Contents for STA-RITE DYNA-PRO
Page 15: ...NOTES...
