Increase Water Efficiency on Your Next Project with the NEW 2-Stage Operation Accessoryfor eco-Air Adiabatic & Spray Coolers
AVAILABLE NOW IN SPECTRUM


What is 2-Stage Operation, and why should you consider it on your next project?

An Adiabatic or Spray cooler equipped with 2-stage operation will have a quantity of (2) solenoid valves in the pre-cooling system, which will operate in stages to reduce overall water consumption by approximately 30% compared to the standard single solenoid valve system!


With a minimal price add across all models, 2-Stage Operation is strongly recommended on your next project requiring increased water efficiency!

Currently, this accessory is provided as an option in Spectrum and can be found under the “Construction Details” drop-down in Spectrum.  However, the water savings that this inexpensive option provides should make this a standard accessory on the majority of projects.


When the fan speed reaches 100% and the unit can no longer maintain the desired set-point in DRY mode, the primary solenoid valve will open to allow water to flow to the pre-cooling system (Adiabatic or Spray) on only one side of the unit.  The depressed dry-bulb temperature or the Spray switchover temperature shown on the technical data sheets will indicate the ambient dry bulb temperature at which Stage 1 of the pre-cooling system will actuate.

A CLOSER LOOK AT 2-STAGE OPERATION:

 

During Stage 1 operation, the fan speed is modulated as needed to maintain the desired set-point. If equipped with an EVAPCO PLC Control Panel, the system will alternate between the primary and secondary solenoid valves when only one stage of pre-cooling is needed.

When the ambient temperature increases such that the system can no longer maintain set-point while operating one stage of the pre-cooling system, the second solenoid valve will open to allow water to the other side of the pre-cooling system. At this time, both sides of the pre-cooling system will be operational, providing peak dry-bulb depression.

During Stage 1 operation, the fan speed is modulated as needed to maintain the desired set-point. If equipped with an EVAPCO PLC Control Panel, the system will alternate between the primary and secondary solenoid valves when only one stage of pre-cooling is needed.

When the ambient temperature increases such that the system can no longer maintain set-point while operating one stage of the pre-cooling system, the second solenoid valve will open to allow water to the other side of the pre-cooling system. At this time, both sides of the          pre-cooling system will be operational, providing peak dry-bulb depression.

 

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