These Waterway pump traps look similar, but they are not interchangeable. Before you order a replacement be sure to check the size of the union nut that connects the trap to the face of the pump. The union nuts are different sizes and are labeled with different part numbers(as shown in lower pics). Trap 310-6500 will fit the Hi Flo and Hi Flo II pumps. Trap 310-5400 will fit the Iron Might, E Series, Spa Flo, TWM, and Center Discharge pumps.
The most common reasons for a noisy pool pump can include: blocked lines, a blocked impeller, faulty bearings or unsecure mountings. These problems cause noises including: loud rattling, grinding, gurgling, whining, buzzing, high pitched noises and vibrations. Many pump noises can be fixed in just a few steps others may require a service call from a professional. While a noisy pool pump is certainly a pain, it’s fairly easy to troubleshoot . First locate the source of the sound—whether it be from the pump’s housing or the motor . It might be cavitation, internal blockage, improper mounting that causes vibrating or bad motor bearings. Even low water levels, clogged pipes, or cold water can cause pump noise. A pump run without sufficient water flow can actually “boil” the water inside the pump and melt the impeller.
When your pool pump isn’t working right, everything comes to a halt. The pump is the pulse of a healthy pool, so it’s important to get the problem fixed as soon as possible in order to keep the pool clean. Let’s take a look at some of the most common pool pump problems and their causes.
It Won’t Turn On
If there’s no noise when the pump turns on, immediately check your breaker box to make sure the power is on and flowing. If the breaker is still in the “on” position, you might have an electrical problem in your lines or in the motor. If your system runs on a time switch, you may need to check to make sure the gears are turning. Also double-check any GFCI outlets wired into the system to ensure the breaker button hasn’t been tripped. If the motor just makes a humming noise when trying to start, chances are good that the motor shaft could be locked up and unable to move.Try to manually move the shaft without electricity.
It Keeps Turning Off
If your pump keeps turning off after a few minutes, but turns on again 10-15 minutes later, the pump is more than likely overheating. Make sure the vents are free of debris, there’s adequate ventilation around the pump, and check to see if the pump is shaded during the hottest parts of the day. A pump with a bad run capacitor can also cause the pump to overheat. If the problem is not related to overheating, it could indicate loose wire connections or incorrect voltage to the pump or a bad extention cord (too light gauge)
It’s Noisy
No one likes a noisy pool pump, and there are several reasons a pump could be making loud, strange noises. If the pump is screeching and squalling, chances are pretty good you’re dealing with bad motor bearings.
Another common complaint is when a pump sounds like it has small rocks stuck inside, and it’s making a loud, rattling noise. If you’ve ruled out vibration noises (solved by placing a rubber mat where the pump sits on the pad), it might be that your pump isn’t getting enough water, also known as cavitation. If not addressed promptly, cavitation can cause your impeller to wear out, the shaft seal or pump fittings to fail, or any number of other serious problems with the pump. After making sure there’s enough water in the pool, check for closed off lines or a clog in the lines, then clean the skimmer basket, pump basket, impeller and possibly even the filter. It could also be that the pump is just too big and powerful for the pool’s size, and you’ll need to purchase a properly sized pump.
The Pump Isn’t Pulling Water
The first thing to rule out in this case is a blockage. Make sure the skimmer, pump basket and impeller are clear of debris. If the water is flowing slower than normal, this most likely indicates that your filter needs to be cleaned. Inability to pull water through the lines could also be caused by an air leak on the suction side (before the impeller), which can prevent your pump from priming properly.
The Pump Is Pulling Air
You shouldn’t be able to see any air in the pump basket, but it’s not uncommon to see a bubble or two from time to time. However, a pump that’s not airtight and pulls a lot of air will start to cause big problems for your system. Common reasons for pulling air include loose or cracked pump lids, bad o-rings or gaskets . To locate the air leak quickly, there are a couple things you can do. Either pressurize the suction side of the line and look for a water leak, or apply shaving cream to the suspected areas and watch for a “dimple” as the suction pressure draws the shaving cream into the lines. Replace or repair damaged parts as needed.
It Won’t Prime
This ties in closely with the previous two sections, because the most common reason a pump won’t prime is due to an air leak on the suction side. Other reasons for this could be that the water level in the pool is too low, or the pump basket or impeller might be clogged.
It’s Leaking Water
This problem is relatively easy to diagnose and fix. Bad seals, o-rings and loose connections can all cause leaks. If replacing seals and o-rings, you can either purchase the individual parts or an all-in-one “Go Kit” for your pump model, which has all the seals and o-rings you’ll need.
No matter what the problem might be with your pool pump, Waterwayparts.com has you covered! From o-rings and impellers to brand new pumps, we have everything you need to get your pool circulating again. Search parts for your pump on http://www.waterwayparts.com 
Waterway pumps often have a “leaf trap” in front of the “pump”. Homeowners describe this as a “pre filter”, “basket”, or just plain “pump”. The see-through lid has been re designed, however, they are interchangeable.
There is a small decal on the center of the lid. It may have a “W” on it, or it may be an American flag. Both have part numbers on them, however, the numbers are for the decal itself not the lid.
808-3150.1008 and 808-3150.0413 are part numbers for decals.
Since 2014 the replacement lid part number is 319-4100
http://waterwayparts.com/WATERWAY-TRAP-LID-319-4100/
The “new ” lid is two pieces and easier to remove. Again, they are interchangeable and both require the exact same o-ring 805-0436
Although these wet ends look similar, they are not interchangeable. The height of the intake port, the size and type of threads, and placement of the discharge port can make a huge difference. It is always better to replace your pump with the same style “wet end”. The existing plumbing in your system will line up perfectly and make the installation of the new pump much easier. If you need help identifying the exact replacement you need take a detailed look at the images on our website. If you still have questions, send us some pics of your existing set-up. Make sure we can see the entire pump in your pics.
Send your inquiries to sales@waterwayparts.com
The Spa Flo II and Hi Flo II faceplates have the same number molded into them. E128519 IS NOT THE PART NUMBER. As you can see, they have different suction fittings. The rear of the faceplate also shows the same numbers 311-2170 and 311-2160. Be sure to chose the correct faceplate when ordering on http://www.waterwayparts.com
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