Watts R24-12-1111000 - Manual (Page 17)

I. INTRODUCTION
The 3501 Reverse Osmosis Controller is designed to control and monitor the operating
parameters of a reverse osmosis water purification system. Information is displayed on a
back-lit liquid crystal display, and on individual light-emitting diodes (LEDs). Functions
and controls are operated through snap-dome switches (see Figure 1).
A.
Features
Temperature Compensated Conductivity Monitor
Water
Temperature Monitor
Three Modes of Operation: Stand-by, Tank Feed, and Direct Feed
Pretreatment
Interlock
Tank
Full Shutdown
Inlet
Valve Control
Pump
Control
Low Feed Pressure Sensing with Automatic Reset
Autoflush with Adjustable Flush Time
Diverter
Valve Output
B. Specifications
Power Requirements: The controller can operate with a power source of 115 or
230 VAC single phase. A multi-function power inlet is used to select the proper
input voltage.
Fuse: 1 amp 250 volt slow blow, located inside the power inlet receptacle.
Environment: The controller can operate at a temperature from 0° to 60° C (32° to
140° F). Relative humidity must not exceed 95 percent.
Conductivity Monitor: The conductivity monitor measures the product water
quality and displays this information in micro-mhos/cm. The display is
temperature compensated to 25° C (770 F).