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why does my pool filter have high pressure

2023/11/01

Why Does My Pool Filter Have High Pressure?


As a pool owner, dealing with high pressure in the pool filter can be a frustrating experience. Not only does it reduce the efficiency of the filter, but it can also lead to expensive repairs and replacements. In this article, we will discuss the reasons behind high pressure in pool filters and provide tips on how to fix and prevent this issue from occurring in the future.


Subtitles:


1. Understanding How Pool Filters Work

2. Causes of High Pressure in Pool Filters

3. How to Identify High Pressure in Pool Filters

4. Steps to Fix High Pressure in Pool Filters

5. Preventing High Pressure in Pool Filters


Understanding How Pool Filters Work


Before we delve into the reasons behind high pressure in pool filters, it is important to understand how pool filters work. The primary function of a pool filter is to remove impurities such as dirt, leaves, and debris from the pool water. This is achieved through a complex network of filters, strainers, and pumps that work together to keep the pool water crystal-clear and safe for swimming.


There are three main types of pool filters: sand filters, cartridge filters, and diatomaceous earth (DE) filters. Sand filters use a layer of sand to trap impurities, while cartridge filters use a replaceable filter cartridge to trap debris. DE filters use a layer of diatomaceous earth to trap impurities, making them the most effective but also the most expensive type of pool filter.


Causes of High Pressure in Pool Filters


High pressure in pool filters is usually caused by a blockage or restriction in the filter's plumbing system. This blockage can be caused by a number of factors including:


1. Clogged Filter Media: Over time, the filter media (sand, cartridges or DE powder) can become clogged with debris, causing water flow to be restricted, and pressure to build up. As a result, the filter needs to work harder to push water through the media, causing high pressure.


2. Dirty or Clogged Strainer: The strainer basket or cupt in front of the pump can become clogged with debris, reducing the flow of water and resulting in high pressure.


3. Closed or Partially Closed Valves: Valves in the filter system that restrict the flow of water can create internal pressure, resulting in high pressure in the filter.


4. Air Leaks: Air leaks in the plumbing system can cause the pump to pull in air instead of water, resulting in low flow and high pressure. Common areas for air leaks are the pump lid or the valve fittings.


5. Oversized Pump: A pump that is too large for the filter system can cause high pressure by pushing too much water through the filter quickly.


How to Identify High Pressure in Pool Filters


To identify whether your pool filter has high pressure, you will need to check the filter's pressure gauge. The pressure gauge is found on the filter's multiport valve or pump housing and measures the pressure of the water in the filter system. A pressure reading of 10-15 psi is normal for most pool filter systems.


If the pressure reading on the gauge exceeds the normal range, it is an indication that high pressure is present in the filter system. High pressure readings can be indicated by pressure readings above 20 psi or by a gauge that is stuck in the high range.


Steps to Fix High Pressure in Pool Filters


Dealing with high pressure in pool filters requires a systematic approach to identify and fix the root cause of the problem. Here are the steps to follow to fix high pressure issues in your pool filter:


Step 1: Turn off the pump.


Step 2: Clean the filter media or replace the filter cartridge.


Step 3: Clean the strainer basket or cup.


Step 4: Check and clean all valves in the plumbing system.


Step 5: Tighten any loose valve fittings to eliminate air leaks.


Step 6: Replace the pump if it is too large for the filter system.


Preventing High Pressure in Pool Filters


Preventing high pressure in pool filters requires regular maintenance and monitoring of the filter system. Here are tips on how to prevent high pressure in your pool filter:


1. Regularly clean and maintain the filter media or cartridges.


2. Clean the strainer basket or cup every week.


3. Inspect all valves and fittings for leaks and leaks.


4. Don't install a pump that is too large for the filter system.


5. Install a pressure relief valve on the filter system to release internal pressure if it becomes too high.


In conclusion, dealing with high pressure in pool filters can be a frustrating experience. However, with proper maintenance and monitoring, you can prevent this issue from occurring and ensure your pool filter is running efficiently.

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