Seeking help with new pool- sand filter works barly for short time and no pressure

[tallguyy808]

Problem: Our pool filter when first turned on has no pressure and it only pumps into the pool for a short time and its extremely weak then eventually it stops pushing water into the pool.

Back story: We have a brand new Namco 18 x 52 willow model with a 1hp 110electric pump and a clearwater (waterway) sand filter.

we had pool installers setup the pool...had clean water delivered...then electric finished. The pool installers put it all together including the pump. We turned the pump on for the first time yesterday and it worked but was leaking pretty bad at the drain on the filter.

1st solution....i went to namco today and swapped for another drain cap. i removed the drain cap and put lube on the new one and installed it as fast as i could. water continually came out of the filter while swapping and it had it in closed mode. i tightened it up and it does not leak anymore. I turned the pump on and there was no water flow at all. i opened the clear lid on the motor and water rushed out...i closed that up and turned the pump on....on filter mode. and i got No pressure reading but i got water in the lines and slight water going into the pool from the filter.

i did this 3 more times...i also pulled out the basket and tried to feel for debris. i cant find the impeller with my fingers. i am a total pool newbie. i called namco again. and they are now closed...they never return my calls =( nor will the pool installers. it just blows my mind that everything is new and doesn't work properly and getting help is like pulling teeth from them.

any help would be greatly appreciated. i