Not sure with an EC30, I have an EC45 but assuming they are similar make sure the steel rod in the center top is attached to the bump handle.
With an ec45 you can detach the top of the canister fairly easily and inspect the rubber gasket and fingers inside. look for a tear in the gasket, but you'd probably get D.E. going into the pool if this was the case.
The vac system has to hook up the the skimmer not the Hayward filter. k
sp714 is the filter head manufactured by hayward need tank model s180 t s244t ect. hayward
broken filter grid
Go to their website
Depending on what type of filter you have. For example, a Hayward S180 uses 150lbs of sand, S244 uses 300lbs. This information is provided on the sticker that is located on the tank of the filter.
Filter, winter, closed, backwash, rinse, waste
My Hayward sand filter doesn't have a liner. I just add the sand to the pressure vessel.
Sand Andre Pro 50 is a better filter game than the Hayward VL40T32 VL.
Hayward is a pump, filter and general pool products manufacturer based in the United States. It is also a California city in Alameda county.
Google Hayward.com and search the links there. k
Read the owners manual.
If, and only if, the horsepowers are the same and the fittings are the same size, yes. Don't change the horsepower of your pump without changing your filter without consulting a professional.