IS2300 Rev-A1 Max-Flo XL™ by Owner’s Manual Max-Flo XL Pump Series The Hayward Max-Flo XL is a series of high technology self-priming pumps that combine performance, dependability and value with durable construction. Designed for pools of all types and sizes, Max-Flo XL features 1 1/2” x 2” union connections to match a variety of plumbing configurations and a cam and ramp strainer cover that seals with less than a quarter turn.
Table of Contents 1. 2. IMPORTANT SAFETY INSTRUCTIONS ...............................................................................................................3 General Information .................................................................................................................................... 6 2.1. Introduction 6 2.2. Primary Features 6 2.3. Product Dimensions 6 3. Installation and Wiring ............................................................................................
1. IMPORTANT SAFETY INSTRUCTIONS Before installing or servicing this electrical equipment, turn power supply OFF. Basic safety precautions should always be followed, including the following: Failure to follow instructions may result in injury. This is the safety-alert symbol. When you see this symbol on your pump or in this manual, look for one of the following signal words, and be alert to the potential for personal injury.
WARNING – Pool and spa components (seals, gaskets, etc.) have a finite life. All components should be inspected frequently and replaced at least every ten years, or if found to be damaged, broken, cracked, missing, or not securely attached. WARNING – Risk of Electric Shock. All electrical wiring MUST be in conformance with applicable local codes, regulations, and the National Electric Code (NEC). Hazardous voltage can shock, burn, and cause death or serious property damage.
WARNING – To Reduce the risk of Entrapment Hazards: When outlets are small enough to be blocked by a person, a minimum of two functioning suction outlets per pump must be installed. Suction outlets in the same plane (i.e. floor or wall), must be installed a minimum of three feet (3’) [0.91 meter] apart, as measured from near point to near point. Dual suction fittings shall be placed in such locations and distances to avoid “dual blockage” by a user.
2. General Information 2.1. Introduction This manual contains information for the proper installation and operation of the Hayward Max-Flo XL Series. The instructions in this manual MUST be followed precisely. Failure to install according to defined instructions will void warranty. 2.2. Primary Features Aligns with the original Max-Flo pump for seamless retrofit installations. Advanced hydraulics for increased efficiency and priming ability. All models include 1 1/2” x 2” union connections.
Though the pump is designed for outdoor use, it is advised to place pump and filter in the shade to shield them from continuous direct heat. Select a well-drained area that will not flood when it rains. Do NOT install pump and filter in a damp or non-ventilated location. Keep motor clean. Pump motors require free circulation of air for cooling. 3.2. Pump Mounting Install pump on a level concrete slab or other rigid base to meet all local and national codes.
3.5. Electrical WARNING – All electrical wiring MUST conform to local codes, regulations, and the National Electric Code (NEC). WARNING – Ground and bond pump before connecting to electrical power supply. Failure to ground and bond pump can cause serious or fatal electrical shock hazard. Do NOT ground to a gas supply line. To avoid dangerous or fatal electrical shock, turn OFF power to pump before working on electrical connections. Fire Hazard match supply voltage to pump nameplate voltage.
3.9. Wiring WARNING – All electrical wiring MUST conform to local codes, regulations and the National Electric Code (NEC). Pump MUST be permanently connected to circuit. If other lights or appliances are also on the same circuit, be sure to add their amp loads before calculating wire and circuit breaker sizes. Use the load circuit breaker as the Master On-Off switch. WARNING – If you do not use conduit when wiring motor, be sure to seal wire opening on end of motor to prevent dirt, bugs, etc.
To Wire a Two-Speed Motor Wire the pump as shown in the diagram below. See Fig 3.9.3 Fig 3.9.3 4. Startup & Operation 4.1. Prior to Start-Up If it is necessary to perform a water pressure test prior to initial use to ensure plumbing system is functioning properly, then the following criteria should be maintained for this test: 1. Have a professional perform this test. 2. Ensure all Hayward pump and system components are removed from system prior to performing test.
3. RELEASE ALL PRESSURE from pump and piping system using filter manual air relief valve. See filter owner’s manual for more details. 4. 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. 5. Clean and lubricate strainer cover O-ring with "Jack's 327" if necessary. 6. Replace strainer cover on strainer housing; turn clockwise to tighten cover.
7. Shaft Seal Change Instructions IMPORTANT SAFETY INSTRUCTIONS PLEASE READ AND FOLLOW ALL INSTRUCTIONS When servicing electrical equipment, basic safety precautions should always be observed including the following. Failure to follow instructions may result in injury. WARNING – To reduce risk of injury, do not permit children to use this product. Disconnect all electrical power service to pump before beginning shaft seal replacement. Only qualified personnel should attempt rotary seal replacement.
MECHANICAL SEAL CERAMIC SEAT Fig 7.3.1 7.4. Seal Installation 8. Clean and lightly lubricate the motor shaft and seal recess in the seal plate (item #13) with a dilute solution of .non-granulated liquid-type soap. Gently wipe the polished surface of the ceramic seal with a clean, soft, cotton cloth. Lubricate the rubber cup on the ceramic seat and press it firmly and evenly into the recess of the seal plate (item #13) with the polished side of the ceramic facing out. 9.
7.5. Replacing the Impeller and Diffuser 11. Screw the impeller (item#10) onto the motor shaft in a clockwise direction. Tighten snugly by holding motor shaft with wrench as noted in step #4. 12. Place the diffuser (item #9) over the impeller (item#10) onto the seal plate (item#13), aligning the three (3) protruding pins with the matching holes in the seal plate (item#13). Note: Flat side of diffuser rim (item #9) will face up. Replace three (3) diffuser screws (item #7), Torque screws to 20 in-lbs. 7.6.
8. Replacement Parts 8.1. Parts Diagram Figure 8.1-1 8.2. Ref. No. Parts Listing Part No.
Ref. No. Part No. Description Qty.
Pump Won't Prime: 1. Empty pump/strainer housing. Make sure the pump/strainer housing is filled with water & the cover o-ring is clean. Ensure the o-ring is properly seated in the cover o-ring groove. Ensure the o-ring sealing surface is lubricated with “Jack’s 327” and that the strainer cover is locked firmly in position. Lubricant will help to create a tighter seal. 2. Loose connections on the suction side. Tighten the pipe/union connections.
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