# Can i use a sand filter with a 635T pump - Pool & Spa

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### Anonymous

could possbly be a bad gasket on the vari-flow valve. When is the last time you backwashed?

Posted on Apr 29, 2009

### Anonymous

Try using Hard pvc plumbing as opposed to hoses

The Pool Tech

Posted on Aug 08, 2010

### A Miller

The simple answer is not many. I don't think your pump is that hungry to use kilowattS per hour... lets see "Kilo" is one thousand. At this site you will find the several formula for getting to your answer. Ohm's Law applies ... http://www.powerstream.com/Amps-Watts.htm

I am presuming your pump is 115 Volts and it probably plugs into a 15 amp circuit. IF IT USES 15 amps (I doubt it uses the entire value) Volts X Amps = Watts or 1725 watts or about 1.7 kilowatt. I couldn't find the amp rating for your particular model pump. I think it probably operates near 6 to 8 amps @ 115 Volts AC. If your pump runs at 6 amps that is 690 watts, 8 is 920 and 10 would be 1150. There are other factors that determine the actual amount of power consumed - load will increase the use - partially clogged filter would be an example of increased load, age of the pump could be another factor.

Here is another nifty place to convert: http://www.supercircuits.com/resources/tools/Volts-Watts-Amps-Converter

Here is a rule of thumb: If a device can run on two different voltages, the higher the voltage, the lower the amps. For example 115 volt @ 12 amps would use 1380 watts. The same device running at 230 volts would run at 6 amps and use 1380. This is the correct math answer. However, in actual use, the device would run slightly more efficient (use fewer watts). Electricians and science teachers and math teachers will all tell you different stories depending on their discipline. Heavy use devices do run more efficiently at the higher voltage (stove, dryer, furnace, hot water heater, well water pumps, swimming pool pumps)(Do not go looking for a 220 Volt pump for your above ground pool in an effort to save money. The higher voltage device will cost more and there are other practical and safety related issues in this kind of installation.)

If you lived in my area, (please don't say where you live) you would pay about 12 cents (US dollars) per kilowatt hour. If your pump runs at 10 amps 115 volts - that would be just over 12 cents per hour to run the pump.

Posted on Mar 07, 2011

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## Related Questions:

### We haven't used our pool yet I put pool chemicals in to clean pool and the pump won't turn on it has 635T filter pump , the light doesn't even come on the pp when plugged in? What do I need to do?

Check the breaker feeding the pump and make sure that power is reaching the motor. If there is a timer make sure that it is in the "on" position.

Aug 06, 2015 | Pool & Spa

### When backwashing...sand discharges out backwash hose..

A little sand in backwash is not uncommon. Many packaged sand filter systems use pumps whose flow rates greatly exceed the flow capacity of the filter.(the more horsepower the better, right? - Wrong) If this occurs only during back flush the the pump is too strong or the sand level is above the beginning of the rounded top of tank. The sand level will eventually correct itself.

Aug 10, 2012 | Hayward SAND FILTER, PRO SERIES

### Water leaks out the top of the filter housing. I ordered "o" ring 10266 (filter housing "o" ring) and it is too larger. Where can I find a schematic with part numbers.

Here's the diagram for the 635T.. The o-ring for the top valve should be part number 10264- #3...small o-ring. The housing cover is the bigger o-ring 10325 #5.. Hope this helps you...

Aug 11, 2011 | Intex Krystal Clear Model 635 Pool Filter...

### How do i change the sand in the filter? I am getting sand in my pool.

You will simply remove the old sand from your pool filter and follow the instructions from your users manual like you are adding sand for the first time. In case you don't have it, I am going to paraphrase it for you below.

1. Be sure correct amount of filter sand media is in tank and
that all connections have been made and are secure.
IMPORTANT: To prevent unnecessary strain on piping system and valving, always shut off pump before switching Filter Control Valve positions.
The correct amout of sand can be determined with this link: http://www.backyardcitypools.com/pool-filters/Filter-Sand-Requirements.htm

2. Set your controls to the backwash position.

3. Prime and start pump according to pump instructions. (be sure all suction and return lines are open), allowing the filter tank to fill with water.

4. Once water flow is steady out the waste line, run the pump
for at least 2 minutes. This initial backwashing of the filter is recommended to remove any impurities or fine sand particles in the sand media.

5. Turn pump off and set valve to RINSE position. Start pump and operate until water in sight glass is clear—about 1/2 to 1 minute. Turn pump off, set valve to FILTER position and restart pump. Your filter is now operating in the normal filter mode, filtering particles from the pool water.

6. Adjust pool suction and return valves to achieve desired
flow. Check system and filter for water leaks and tighten connections, bolts, nuts, as required.

7. Set your filter to the "filter" position.

May 22, 2010 | Hayward SAND FILTER, PRO SERIES

### Replaced sand now filter isnt working

if u used play sand, or any other type of sand thats NOT pool filter sand, that could be the problem. also if there is too much sand or too little sand that could also cause this.

Jun 08, 2009 | Hayward Pro Series 18" Above Ground Pool...

### My pool sand filter pump isnt filtering the water

sounds like the sand has clumped together inside filter. you can open filter and replace sand charge or dump into wheel barrow loosen sand and flush clean with hose and put back in

May 13, 2009 | Pentair Sand Dollar 19" Filter with 1 Hp...

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