www.haywardpool.com USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Max-Flo II
™
Series __________________ ___ _________________________ Page 8 of 16
Starting/Priming the Pump
Release all pressure from filter, pump, and piping system.
See filter owner’s manual.
WARNING –
Return to filter to close the manual air relief valve when a steady stream of water (not air or air
and water) is discharged from the valve. Failure to do so could result in personal injury or death.
If water source is higher than the pump, pump will prime itself when suction and outlet valves are opened. If water
source is lower than the pump, unscrew and remove strainer cover; fill strainer housing with water.
ATTENTION-
NEVER OPERATE THE PUMP WITHOUT WATER.
Water acts as a coolant and
lubricant for the mechanical shaft seal. NEVER run the pump dry. Running the pump dry may damage seals,
causing leakage, flooding and voids the warranty. Strainer housing must be filled prior to starting.
Clean and lubricate strainer cover O-ring with "Jack's 327" each time it is removed. Inspect O-ring and re-install on
strainer cover.
Replace strainer cover on strainer housing; turn clockwise to tighten cover.
NOTE - Tighten strainer cover lock ring by hand only (no wrenches).
Verify that there are no leaks from the pump or filter. If leakage occurs DO NOT start pump. If no leakage occurs,
stand at least 10 feet from pump and/or filter and proceed with next step.
Pump is self-priming using 1 ½” pipe. Turn on power and wait for pump to prime, which may take up to five (5)
minutes. Priming time will depend on vertical length of suction lift and horizontal length of suction pipe. If pump
does NOT prime within five minutes, stop motor and determine cause. Be sure all suction and discharge valves are
open when pump is running. See Troubleshooting Guide.
ATTENTION –
Wait five (5) seconds before re-starting pump after stopping the pump. Failure to do so may
cause reverse rotation of motor and consequent serious pump damage.
Close filter manual air relief valve after pump is primed.
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 to avoid damage. Do NOT use water to hose off motor.
Occasionally, shaft seals must be replaced, due to wear or damage. Replace with genuine Hayward seal assembly kit.
See “Shaft Seal Change Instructions” in this manual.
Storage/Winterization
WARNING –
Separation Hazard.
Do not purge the system with compressed air. Purging
the system with compressed air can cause components to explode, with risk of severe injury or death to
anyone nearby. Use only a low pressure (below 5 PSI), high volume blower when air purging the pump,
filter, or piping.
ATTENTION
–
Allowing the pump to freeze will void the warranty.
ATTENTION –
Use ONLY propylene glycol as antifreeze in your pool/spa system. Propylene glycol is non-
toxic and will not damage plastic system components; other anti-freezes are highly toxic and may damage plastic components
in the system.
Drain all water from pump and piping when expecting freezing temperatures or when storing pump for a long time (see
instructions below).
Keep motor dry and covered during storage. To avoid condensation/corrosion problems, do NOT cover or wrap pump with
plastic film or bags.
