Fleck 5800 LXT & SXT Downflow/Upflow Service Manual

About this manual

This service manual provides detailed instructions for installing and operating Fleck 5800 LXT & SXT water softener systems, including setup, timer programming, and troubleshooting. It covers both downflow and upflow configurations, with sections on valve assembly, meter installation, and safety precautions. The manual also includes startup procedures and diagnostic programming modes for maintenance and repair.

What's inside

• Installation
• Start-Up Instructions
• Timer Features
• Timer Operation
• Master Programming Mode
• Diagnostic Programming Mode
• Powerhead Assembly
• Control Valve Assembly
• Turbine Meter Assembly
• Bypass Valve Assembly

Frequently asked questions

What is the minimum water pressure required for the regeneration valve to operate effectively?

A minimum of 20 pounds (1.4 bar) of water pressure is required for the regeneration valve to operate effectively.

What are the maximum limits for water pressure, water temperature, and freezing conditions?

Water pressure must not exceed 125 psi (8.6 bar), water temperature must not exceed 110°F (43°C), and the unit cannot be subjected to freezing conditions.

What is the minimum pipe size required for a residential drain line?

The pipe size for a residential drain line should be a minimum of 1/2" (13 mm).