Carvin Laser 22-inch Sand Filter System User Manual

Product Overview

The Carvin Laser 22-inch Sand Filter System is engineered for efficient filtration of above-ground swimming pools up to 31,000 gallons. Its design ensures even water distribution across the sand bed, preventing channeling and promoting superior filtration and backwashing. The system features a durable, UV- and corrosion-resistant blow-molded tank and a versatile 7-way dial valve for various operational modes.

This filter system is designed for longevity and ease of use, featuring a deep, high-capacity sand bed that extends filter cycles between backwashings. The tank includes a bottom drain for convenient draining and winterizing. Included with the filter tank are a high-pressure hose and two hose adapters. Please note that the filter pump and sand are not included.

Setup and Installation

Due to the significant weight of the sand filter once filled, it is crucial to determine its permanent location before adding sand or connecting plumbing. Ensure the chosen site is level, stable, and can support the full weight of the filter. The non-corrosive resin clamp on the 7-way dial valve allows for simple installation and service.

• Placement: Select a permanent, level, and stable location for the filter system.
• Sand Capacity: The 22-inch tank holds 250 lbs. of sand (sand not included).
• Plumbing: The valve features 1 1/2-inch plumbing connections. Use the included high-pressure hose and two hose adapters for connection to your pool pump and return lines.
• Secure Connections: Ensure all connections are tight to prevent leaks.

Operating the 7-Way Dial Valve

The Carvin Laser sand filter is equipped with a 7-way dial valve that controls various operational modes. To switch between functions, always turn off the pool pump before moving the handle. The functions are:

• Filtration: Standard operating mode for filtering pool water.
• Backwash: Reverses water flow to clean the sand bed. Used when pressure gauge indicates high pressure.
• Rinse: Used after backwashing to settle the sand bed and flush out remaining debris before returning to filtration.
• Drain: Allows for draining water from the pool or filter.
• Winterize: Prepares the filter for cold weather storage.
• Test: For diagnostic purposes.
• Whirlpool: (Also referred to as Recirculate) Circulates water without filtering, useful for chemical distribution.

Maintenance

Regular maintenance is essential for optimal filter performance and longevity. Key maintenance tasks include:

• Pressure Monitoring: Regularly check the pressure gauge located on the valve. An increase in pressure indicates that the sand filter needs backwashing.
• Backwashing: Perform backwashing when the pressure gauge reads 8-10 PSI above the clean filter pressure, or as recommended by your pool maintenance schedule. This process cleans the sand bed by reversing water flow.
• Rinsing: Always rinse the filter after backwashing to ensure all dirty water is flushed out before returning to filtration mode.
• Winterizing: Follow the winterize function and instructions to properly prepare the filter for off-season storage, preventing damage from freezing. The tank's bottom drain facilitates this process.

Troubleshooting

If you encounter issues with your Carvin Laser Sand Filter System, consider the following common troubleshooting steps:

• Low Flow/High Pressure: This typically indicates a dirty filter. Perform a backwash and rinse cycle. Ensure your pump is operating correctly and skimmer/pump baskets are clean.
• Water Not Clearing: Check if the filter needs backwashing. Verify proper chemical balance in the pool. Ensure the correct type and amount of sand is used.
• Leaks: Inspect all plumbing connections for tightness. Check O-rings and gaskets for proper seating and damage.
• Valve Malfunction: Ensure the valve handle is fully engaged in the desired position. If the valve is stiff, it may require lubrication or servicing.

For persistent issues, consult a qualified pool technician or contact Carvin customer support.

Specifications

Warranty and Support

For information regarding product warranty, technical support, or replacement parts, please refer to the warranty card included with your purchase or visit the official Carvin website. Keep your purchase receipt as proof of purchase for warranty claims.