Poolplaza Pool Supplies - Home
 Pool Supplies shopping:  | Pool Filters Pool Pumps Pool Cleaners  |  Pool Heaters  |  Salt Systems  |  Pool Parts 

 

Pool Filters> DE Filters  Intro  |  Maintenance  Troubleshooting 

D.E. Filter Troubleshooting

DE Filter Problems

DE Filters are usually pretty easy to troubleshoot.  The filter media does not "go bad" since it is replaced every time the filter is backwashed.  The filter elements themselves can go bad, but when this happens, the problem is generally very easy to track down and repair.  

Problem:  Bad Grids or other Internals

Symptom:  DE Filter Powder Returning to the Pool

If one of the parts inside the DE filter goes bad, it is immediately obvious because DE will be returning to the pool.  Always keep an eye on the filter returns after recharging the filter just to make sure nothing is coming back to the pool.

There are several problem areas that can cause DE to return to the pool:

Torn Filter Grids - these are usually pretty easy to spot when washing down the filter grids.  Holes can develop anywhere in the fabric of the grid.  Don't forget to look at the very end of the grid.  Many times a hole will develop on the bottom of the "tube" of the grid. 

Broken Manifold - a cracked manifold will cause a large amount of DE to return to the pool

Broken/Missing Air Relief Strainer - if the air relief strainer is broken or missing, it will allow DE back into the pool.  

Broken Filter Necks - this can be a tough problem to detect.  If the neck of the grid can squeeze together easily, then it will not fit snugly into the manifold and will cause DE to bypass, especially right after the filter is started up.

Bad Backwash Valve - if the DE is bypassing the filter, it may be caused by problems inside the valve.  Disassemble and inspect the valve.

Problem:  Oversized Pump or Failure to Backwash

Symptom:  Crushed Grids or Manifold

It is not unusual to find grids or manifolds that have been crushed by high pressure inside the filter.  Today's high head pumps have extra power to spare and can quickly damage a filter.  The way to avoid this is to be sure to backwash at regular intervals and not put it off.  It is also important to properly size the pump to the filter.  The natural tendency is to install pumps that are larger than what is really necessary.  If the pool really needs a 2.0 hp pump or larger, consider installing a StaRite filter because its grids are less likely to be crushed by high pressure.

Return to filter shopping

POOL School - exclusively from POOLplaza.com


Pool Cleaners
Booster Pump Driven
Pressure Side
Suction Side
Self-Contained

Salt Systems!
Benefits
Differences
How It Works
Choosing a System
Maintenance
Troubleshooting
FAQ's
Sizing a System


Pool Pumps
Choosing a Pool Pump
Pump Troubleshooting

Pool Filters
Sand Filters
DE Filters
Cartridge Filters
Choosing a Filter

Backwash Valves  
Push-Pull Valves
Multiport Valves
Bottom Valves
Separation Tanks
Maintenance
Troubleshooting

Chemical Feeders  

Plumbing/Valves
Intakes
Valve Settings
Valve Actuators
Ortega Valves
Jandy Valves
Gate Valves
Ball Valves
Check Valves

Water Chemistry

Chlorine
pH Balance
Total Alkalinity
Calcium Hardness
Stabilizer
Salt Systems
Problems

Pool Maintenance
Preliminaries
Vacuuming
Leaf Bagging
Plaster Care
Chemical Care
Equipment Care
Seasonal Maintenance

About Us
What They Are Saying...
Contact Us
Privacy & Security













POOL School - exclusively from POOLplaza.com<img border=


Pool Supplies Home
   |  Pool Cleaners  |  Pool Heaters  |  Pool Pumps  |   Pool Filters  |  Pool Parts
 
  POOLplaza Inc. does not make any warranty or representation, either expressed or implied, regarding the accuracy or completeness of the information provided by this website; nor does POOLplaza Inc. assume any liability of any kind whatsoever related to, or resulting from, any use or reliance on this information.  The content of this website should not be used, if it is conflict with any applicable federal, state or local regulations or guidelines.
Copyright 2012 POOLplaza Swimming Pool Supplies - Dallas,TX. All rights reserved. Terms and Conditions