This is a PDF file about Fleck 3900 service manual, which includes installation, start-up instructions, timer setting procedures, regeneration cycle setting procedures, etc.
This document is a service manual for the Fleck 3900 water conditioner. It provides detailed instructions for installation, including requirements for water pressure, electrical facilities, and plumbing conditions. The manual outlines specific installation steps such as lubricating seals, connecting the drain line, and purging air from the unit.
| Minimum Water Pressure | 20 pounds (1.4 bar) |
|---|---|
| Maximum Water Pressure | 125 psi (8.6 bar) |
| Maximum Water Temperature | 110°F (43°C) |
| Minimum Drain Line Size (Residential) | 1/2 inch (13 mm) |
Do not use granulated or rock salt.
A minimum of 20 pounds (1.4 bar) of water pressure is required.