Pentair CS400™ Semi-Automatic Backwash Controller for 3-Tank Systems
The Pentair CS400™ Semi-Automatic Backwash Controller for 3-Tank Systems (CS400-03) simplifies the backwash cycle of Stark™ and THS Series® commercial filtration systems equipped with diaphragm-valve face piping kits. With Acu-Trol® Intelligence, this 3-tank configuration can backwash up to six filters in sequence via an integral multi-port pressure distribution valve — saving water, energy, and operator time.
A backwash can be initiated three ways: single-touch semi-automatic button, external signal from a master controller such as the Acu-Trol AK600, or an optional differential pressure switch for automatic backwash functionality. Features user-configurable settings, automatic calculated backwash cycle time, stored backwash data and history, alarms, heater cool-down (Fireman's delay), and valve control for pump and heater protection. LCD display, blue enclosure.
Key Features
3-Tank System Configuration
CS400-03 configured for 3-tank Stark™ and THS Series® installations — same Acu-Trol® Intelligence platform as the CS400-05 and CS400-01.
Three Backwash Initiation Modes
Single-touch semi-automatic, external AK600 signal, or optional differential pressure switch for basic automatic operation.
"Advance" Feature — Water and Energy Savings
Skips unnecessary backwash cycles — one of the most eco-friendly commercial backwash controllers available.
Acu-Trol® Intelligence
Automatic calculated backwash cycle time, stored history, alarms, user-configurable settings, LCD display.
Heater Cool-Down / Network Connectivity
Fireman's delay for heater protection. Compatible with Acu-Trol AcuPort™ for network integration and AK600 master controller.
Specifications
| Configuration | 3-Tank System (CS400-03) |
| Compatible Filters | Stark™ and THS Series® with diaphragm-valve face piping kits |
| Backwash Initiation | Semi-auto (button), external signal (AK600), differential pressure switch (optional) |
| Valve Actuation | City water pressure or compressed air |
| Display | LCD |
| Color | Blue |
| Product Weight | 11 lb |
| Shipping Dimensions | 14 × 14 × 14 in |
| Warranty | 60 Days |
Warranty
The Pentair CS400-03 comes with a 60-day manufacturer warranty. Clearflow Pool Supply is an authorized Pentair dealer and will assist with any warranty service needed.