Top 10 Intex Krystal Clear Model 635 Pool Filter Pump 1500 Gph Questions & Answers

Try giving your pump more air circulation.
Turn off pump when not around it.(should only need to run for around 3 - 4 hours on a small (kid) pool 6 - 8 hours for standard house pool
You could put you pump on a timmer - set shut off time to just before you pump shuts down.
Check you pump (when not conected to mains power) - get some WD40 into it - (salt and metal no like each other)

The manuals are indeed free and available online. I just downloaded the manual for my pool.

Don't trust people telling you that you have to buy something ;)

This is the link to the Filter Pump manual page.
http://www.intexcorp.com.hk/proifv/proifv_dl_client.jsp?lst_docsea=2009&source=intexstore&gid=2&lid=8738

There is no defect for this particular model, however, these lower end units are notorious for short life.

We just cut the holes bigger in the side of the pool, it works great now. Just got to make sure you do not cut it to big! I do nnot understand why they can"t make it standard.


Hope this helps!!!!!!

I have the same problem. I've replaced the filter and made sure nothing was blocking the inlet or outlet but it barely pumps. I also bled the air out.

Should be ok, it really depends on the angle, mine are prolly a few inchs off on some, but im not worried with mine. im pretty sure you will be ok.

my intex 635 pump impeller is broken i need a replacement part. i do not have the money for a new pump.

Here is a simple solution to your shaft impeller problem. First, you need to buy a brass (non-ferrous) round bar about 1/8 inch thick. Any other metal types WILL NOT WORK. Cut about 4 1/2 inches from the brass bar and verify it will fit in the impeller. If it does not, then you need to re-size it. The best way to do that is place it in a drill press and use a metal file (the reason for the 4 1/2 size). As the brass bar rotates, press the metal file against it until a desire size is reached. You may have to remove it from the drill press from time to time and see it will fit into the impeller. When the correct dimension is found, place it back in the drill press and use a medium grid emery cloth to smooth it down. Remove it from the drill press and cut it to the proper size (3 1/2 inches). Remember to round out both ends smooth before re-installing it back in the pump. Reassemble as normal and you are done!!! This should take about 30 minute to perform including installation. I did this to my Intex pump and it runs very smooth and have not problems with it.

If the unit does not have the horsepower rating, but has the AMP rating, try this formula found in Answers.com

"Amps are a factor in calculating power, and so can be used to determine horsepower, but only when other factors are present.
Given other factors, you can find the horsepower. The easiest way is to determine watts by multiplying amps X volts. Next multiply watts by .00134 and you have horsepower.
If: amps (A)= 20 and volts (V)=120 then
A X V =2400 watts (W)
2400 watts X .00134 = 3.216 horsepower"

Hope this helps you???

A late answer but it might help future Intex impleller sufferers... they do not sell replacement parts and you won't find any impellers sold separately anywhere on the planet. I've had 1 Intex pool and 3 Intex filter pumps in 3 years. Last week the 3rd pump's impeller broke as well. I shan't buy their products again.