TROUBLE SHOOTING GUIDE
MOTOR WON’T START
Check for improper or loose connections, open switches
or relays, blown circuit breakers or fuses.
Manually check rotation of motor shaft for free
movement and lack of obstruction.
MOTOR CUTS OUT — Check for:
Wiring, loose connections, etc.
Low voltage at motor (frequently caused by
undersized wiring).
Binding and overload. (Amperage reading)
NOTE: Your Hayward pump motor is equipped with
Automatic Thermal Overload Protection. The
motor will automatically shut off, under normal
conditions, before heat damage build-up, due to
an improper operating condition, can occur. The
motor will auto-restart when safer heat level is
reached.
MOTOR HUMS, BUT DOES NOT START—Check for:
Centrifugal switch stuck in open position.
Binding of motor shaft.
PUMP WON’T PRIME
Make sure pump/strainer housing is filled with water and
that cover O-ring is clean and properly seated. Make
sure strainer cover is locked firmly in position.
Make sure all suction and discharge valves are open
and unobstructed, and that pool water level is above all
suction openings.
Block off suction as close to pump as possible and
determine if pump will develop a vacuum.
A.
1.
2.
B.
1.
2.
3.
C.
1.
2.
D.
1.
2.
3.
If pump develops a vacuum, check for blocked suction
line or strainer, or air leak in suction piping.
If pump does not develop a vacuum and pump has
sufficient “priming water”:
Tighten all bolts and fittings.
Check voltage to make sure pump is up
to speed.
Open pump and check for clogging or
obstruction.
Remove and replace shaft seal.
LOW FLOW — Generally, check for:
Clogged or restricted strainer or suction line;
undersized pool piping.
Plugged or restricted discharge line of filter
(high discharge gauge reading).
Air leak in suction (bubbles issuing from return fittings).
Pump operating underspeed (low voltage).
Plugged or restricted impeller.
NOISY PUMP — Check for:
Air leak in suction causing rumbling in pump.
Cavitation due to restricted or undersized suction line
and unrestricted discharge lines. Correct suction
condition or throttle discharge lines, if practical.
Vibration due to improper mounting, etc.
Foreign matter in pump housing.
Motor bearings made unserviceable by wear, rust, or
continual overheating.
a.
b.
1.
2.
3.
4.
E.
1.
2.
3.
4.
5.
F.
1.
2.
3.
4.
5.
MAINTENANCE
Clean strainer basket regularly. Do not strike basket
to clean. Inspect strainer cover gasket regularly and
replace as necessary.
Hayward pumps have self-lubricating motor bearings
and shaft seals. No lubrication is necessary.
Keep motor clean. Insure air vents are free from
obstruction.
Occasionally, shaft seals must be replaced, due to
wear or damage. See instructions.
STORAGE/WINTERIZING
Pump and motor must be protected from freezing. Shut off
all electric power. Disconnect cord/electrical connections
and plumbing connections. Drain thoroughly and clean out
any debris. Store pump and motor in a dry, well-ventilated
room.
1.
2.
3.
4.
SERVICE & REPAIRS
Consult your local authorized Hayward dealer or service center. No pumps or motors may be returned directly to the factory
without the expressed written authorization of Hayward Pool Products, Inc.
© 1998 Hayward Printed in U.S.A.
Rev: 8/98
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