Reverse Osmosis System Controller
For O.E.M. Manufacturers of RO Systems
ESDI Model 250C

 
The ESDI Model 250C Reverse Osmosis System Controller is a low cost Electronic Control Board that
performs all of the functions necessary to efficiently operate an industrial/commercial water purification system.
This controller incorporates flush cycles to increase membrane life, along with other features that make it cost
effective and easy to use. Comes with a two-year Warranty. Your satisfaction is guaranteed.

The Model 250C is perfect for manufacturers of Reverse Osmosis equipment that wish to lower their
production costs by outsourcing the electronic controllers for their standard systems. Our products are made
in the USA and comply with UL-508, and IEC Standard 1000-4-4 part 4 for electromagnetic interference.
 
Contact us if you require software changes to suit your specific needs.

Features:
  • Maintains water storage tank level, using single float, or pressure switch.
  • Controls water inlet (feed) valve & membrane flush valve (24VAC rated).
  • Lockout input monitors Hi/Lo water pressure, and/or water softener regeneration.
  • Automatic membrane flush cycles with selectable run times and frequencies.
  • Includes: Power up Flush, Stop Flush, Tank Full Flush & Periodic Process Flush.
  • Pump relay is isolated and rated for 1HP @ 120VAC and 2HP @ 240VAC.
  • Front panel with LED Status Display and easy access Option Switches.
  • Board Power: 24VAC, 50/60 Hz, 420ma • Transformer Power: 120/240VAC, 50/60 Hz.
  • Board Size: 4” X 4”. • Enclosure Size: 6” X 6” X 4”.


All of our products come with a Two-year Warranty.  Your satisfaction is guaranteed.



The Model 250C
Reverse Osmosis
Controller can be
purchased in several
configurations.
 
Please Choose
the one that
best suits
your needs.
 
Model 250C with NEMA 4 Indoor Enclosure, Fuses, Internal Power Transformer & Power Switch (DPST). Price $189.00

This configuration comes complete. Just wire it up and it’s ready to go to work. Terminal blocks are removable to help simplify the cable harnessing.
 
Model 250C mounted with Panel: Price $109.00

(Transformer Price: $15.00)

This configuration is best if you have your own
enclosure, and want to incorporate the controller with its own display panel. This can save you time and materials and the burden of labeling your panel. You simply cut out a square hole and 4 mounting holes and mount the controller with panel. Terminal blocks are removable to help simplify the cable harnessing.
Model 250C Board Only: Price $79.00

(Transformer Price: $15.00)

You can purchase the control board alone. This
configuration is best if you want to incorporate the controller, but have your own enclosure, and do not want our display panel. Terminal blocks are
removable to help simplify the cable harnessing.



water vend