Pentair 59002300 Partial Grid Assembly

1. Product Overview

The Pentair 59002300 Partial Grid Assembly is a replacement component designed for specific Pentair D.E. (Diatomaceous Earth) pool and spa filters. This assembly is crucial for the proper filtration of pool and spa water, ensuring clarity and cleanliness.

Intended Use

This partial grid assembly is specifically designed for use with Pentair FNS, FNS Plus, Nautilus, and Nautilus Plus D.E. filters with a 48 square feet filtration area. It measures 24 inches in length.

Image: Pentair 59002300 24-Inch Small Partial Grid Assembly. This image shows the white fabric-covered grid structure, which is a key component of a D.E. filter system.

2. Safety Information

Please read and understand all safety instructions before installing or servicing this product. Failure to follow these instructions could result in serious injury or property damage.

• Always disconnect power to the filter system at the circuit breaker before performing any maintenance or installation.
• Close all valves to isolate the filter system before opening the filter tank.
• Open the air relief valve on top of the filter to release all internal pressure before opening the filter tank.
• Wear appropriate personal protective equipment (PPE) such as gloves and eye protection when handling filter components.
• Refer to your main filter system's manual for complete safety guidelines and specific instructions for your filter model.

3. Package Contents

Verify that all components are present and undamaged upon opening the package.

• One (1) Pentair 59002300 24-Inch Small Partial Grid Assembly

4. Setup and Installation

This section provides general steps for replacing a D.E. filter grid. Always refer to your specific Pentair D.E. filter manual for detailed instructions and diagrams.

1. Prepare the Filter System: Turn off the pump and close all valves to isolate the filter. Open the air relief valve on top of the filter to release pressure. Drain the filter tank completely.
2. Open the Filter Tank: Follow your specific filter model's instructions to open the filter tank and remove the top half. This usually involves loosening a clamp band.
3. Remove Old Grid Assembly: Carefully lift out the entire grid assembly from the filter tank. If only the partial grid is damaged, carefully detach it from the manifold according to your filter's design.
4. Install New Grid: Position the new Pentair 59002300 partial grid assembly onto the manifold, ensuring it seats correctly and securely. Refer to your filter's diagram for proper placement of all grids within the assembly.
5. Reassemble Filter: Carefully lower the complete grid assembly back into the filter tank. Reassemble the filter tank according to your filter model's instructions. Ensure the tank O-ring is clean, lubricated, and properly seated. Secure the clamp band firmly.
6. Restart System: Open all valves that were closed. Turn on the pump. Slowly open the air relief valve on top of the filter until a steady stream of water emerges, then close the valve. Check for any leaks around the filter tank.

5. Operating Principles

The partial grid assembly functions as a critical component within the D.E. filter system. Diatomaceous Earth powder, when introduced into the filter, coats the fabric of the grids, forming a filter cake. This filter cake acts as the primary filtration medium, trapping microscopic particles from the pool water as it passes through the grids. Proper installation and maintenance of the grid assembly are essential for effective filtration.

6. Maintenance

Regular maintenance of your D.E. filter grids is vital for optimal performance and longevity.

• Inspection: During routine filter maintenance or when opening the filter tank, visually inspect the partial grid for any signs of damage, such as tears in the fabric, bent frames, or excessive D.E. buildup that does not rinse off easily.
• Cleaning: When cleaning your D.E. filter grids (typically annually or as recommended by your filter manual), carefully remove the entire grid assembly. Use a garden hose to thoroughly rinse off all D.E. powder and debris from the grid fabric. Do not use high-pressure washers, stiff brushes, or harsh chemical cleaners, as these can damage the delicate fabric of the grid.
• Acid Washing (if necessary): If grids are heavily soiled with oils, scale, or algae that cannot be removed by rinsing, an acid wash may be required. Consult your main filter manual or a pool professional for proper acid washing procedures and safety precautions.

7. Troubleshooting

If you experience issues with your D.E. filter system, the partial grid assembly may be a contributing factor. Here are some common issues and potential causes related to the grids:

• Reduced Water Flow / High Filter Pressure:
  Possible Cause: The grid assembly may be clogged with debris or excessive D.E. buildup, or the grids may be torn, leading to channeling. Insufficient backwashing can also contribute.
  Solution: Inspect and thoroughly clean the grids. If tears are found, replace the damaged grid. Ensure proper backwashing procedures are followed.
• Cloudy Water / D.E. Returning to Pool:
  Possible Cause: A torn or improperly seated grid allows D.E. powder or unfiltered debris to pass back into the pool. The filter tank O-ring may also be damaged or improperly seated.
  Solution: Carefully inspect all grids for tears or damage. Ensure the partial grid is correctly installed and seated on the manifold. Check the filter tank O-ring for proper placement and condition.
• Short Filter Cycles:
  Possible Cause: Grids may be dirty or damaged, leading to rapid pressure buildup or inefficient filtration.
  Solution: Clean or replace grids as necessary. Ensure proper D.E. dosage.

8. Specifications

9. Warranty and Support

For warranty information, technical assistance, or to locate authorized service centers, please contact Pentair customer service directly or visit the official Pentair website. Keep your purchase receipt as proof of purchase for any warranty claims.

Pentair Official Website: www.pentair.com