TROUBLE SHOOTING GUIDE
MOTOR WON’T START
MOTOR CUTS OUT
MOTOR HUMS, BUT DOES NOT START
PUMP WON’T PRIME
LOW FLOW
NOISY PUMP
1. Check for improper or loose connections, open switches or relays, blown circuit breakers or fuses.
2. Manually check rotation of motor shaft for free movement and lack of obstruction.
1. Wiring, loose connections, etc.
2. Low voltage at motor (frequently caused by undersized wiring).
3. Binding and overload (Amperage reading).
Note:
Your SwimPro pump motor is equipped with Automatic Thermal Overload Protection. The motor
will automatically shut-off, under normal conditions, due to an improper operating condition,
before heat damage build-up can occur. The motor will auto-restart when safe heat level is
reached.
1. Centrifugal switch stuck in open position.
2. Binding of motor shaft.
1. Make sure strainer cover is locked firmly in position.
2. Make sure all suction and discharge lines and valves are open and unobstructed, and that pool water
level is above all suction openings.
3. Block off suction as close to pump as possible and determine if pump will develop a vacuum.
a. If pump develops a vacuum, check for blocked suction line or strainer, or air leak in suction piping.
b. If pump does not develop a vacuum and pump has sufficient “priming water”:
(1) Tighten all bolts and fittings.
(2) Check voltage to make sure pump is up to speed.
(3) Open pump and check for clogging or obstruction.
(4) Remove and replace shaft seal.
1. Clogged or restricted strainer or suction line; undersized pool piping.
2. Plugged or restricted discharge line of filter (high discharge gauge reading).
3. Air leak in suction (bubbles issuing from return fittings).
4. Pump operating underspeed (low voltage).
5. Plugged or restricted impeller.
1. Air leak in suction causing rumbling in pump.
2. Cavitation due to restricted or undersized suction line and unrestricted discharge lines. Correct suction
condition or throttle discharge lines, if practical.
3. Vibration due to improper mounting, etc.
4. Foreign matter in pump housing.
5. Motor bearings made unserviceable by wear, rust or continual overheating.
SwimPro by Hayward, Elizabeth, NJ 07207
Printed on recycled paper
Rev. 1/99
