Cooling Water Controllers

  • Model 1575 - Water Treatment Controller
  • Model 2430 - Microprocessor-Based ORP & Conductivity Cooling Tower Controller

  • Model 1575 - Water Treatment Controller

    The Model 1575 uses the latest in microprocessor capability, giving the user a high level of application flexibility. A large illuminated graphics screen, multiple inputs, and very easy setup characterize this new technology. Water meters, sensors and plumbing assemblies are purchased separately.

    • Use this Controller for Cooling towers, Chill loops, Boilers, and condensate systems.

    • Removable power cord and receptacles for simple conduit installations.
    • Scheduled feed, which can use three relays for biocides or other chemicals.

    • Two (2) water meter inputs, two (2) drum switch inputs, conductivity input, flow switch input, and 4-20 mA output are all standard features.

    • Designed with a single circuit board for better reliability and lower cost.

    • Large open shallow enclosure for easy wiring.

    • Ball valve delay feature allows accurate control of motorized ball valves.

    • Heavy-duty stainless steel domed numeric keypad and illuminated graphical display allow for quick and easy programming. Steel domed switches improve the tactile sensing and life expectancy of the keypad.
    • Easy to program, the Model 1575 Controller menu is just like the Lakewood 2000 Series controllers.
    • Controller can be removed from a cooling tower and be placed in another type of application when used with the appropriate conductivity sensor.
    • Single circuit board design improves reliability.
    • No add-on options. 4-20 mA output and biocide features are standard.

    Conductivity range 0-10,000 S
    Conductivity sensor 2 electrode
    Conductivity Resolution 10 S
    Temperature comp. Automatic
    Accuracy & repeatability 1.0%
    Deadband/Setpoint Adjustable
    Auto/Manual outputs Menu selectable
    Keypad 16 tactile push-buttons
    Display illuminated 128x64 pixel LCD
    Drum Switch Inputs 2 digital contact inputs
    Water meter inputs (2) Contact head, paddle wheel or turbine
    Timer Max. blowdown time exceeded
    Output Signal One 4 - 20 mA, non-isolated powered output
    Output relays 3 selectable use, 1 blowdown
    Relay ratings 3A each, 10A total
    Power 120/240 VAC 50/60 Hz
    Ambient 32 - 120F (0 - 49C)
    Enclosure NEMA 4X

    Sensors/Plumbing Cooling Tower Boiler Condensate
    Max Pressure (at 100F) 140 psi (9.65 bar) 600 psi (41.3 bar) 70 psi (4.8 bar)
    Max Temp 140F (60C) 486F (252C) 392F (200C)
    Min flow 1 gpm (3.785 Lpm) Varies w/orifice plate 1 gpm (3.785 Lpm)

    Model 2430 - Microprocessor-Based ORP & Conductivity Cooling Tower Controller

    LONWORKS* Technology is the latest in microprocessor capability that gives the user the highest level of application flexibility. A large graphic screen, multiple inputs and very easy setup with easy field upgrades characterize this new technology.

    • 4-electrode conductivity includes fouling compensation and alarm.
    • Differential ORP sensor with diagnostics indicate fouled reference or open pt band.
    • Integral flowsight & flow switch lockout.
    • Records both makeup (MTR1) and blowdown (MTR2) water meter totals.
    • Configure blowdown water meter (MTR2) as second makeup meter.
    • Blowdown Relay options:
      - Bleed x gallons for every x gallons makeup
      - Bleed x minutes for every x gallons of makeup
      - Bleed by setpoint
      - Bleed by cycles of concentration with NCON/NCKT Option
      - Bleed by multi-setpoint selected with NCON/NCKT Option
    • Three user-selectable relay options (four additional with NRLY):
      - Feed by setpoint, direct or reverse;
      - Water meter actuated feed. MTR1, MTR2 orsum;
      - Feed after blowdown by percent of bleed time;
      - Feed by percentage of time;
      - Schedule feed timer (-RTC Option);
      - General alarm contact.
    • Three security levels:
      - View only
      - Operator
      - Technician
    • Four different languages.
      - English Spanish (standard)
      - English French (optional)
      - English German (optional)
    • Multiple control options in a single economical package.
    • Very accurate control of chemical feed and cycles of concentration.
    • Very low maintenance.
    • Tolerant to power surges and brownouts.
    • Power cord, plug outlets and attached plumbing make installation easy. There is plenty of protected room inside the enclosure for electrician wiring.
    • Very accurate monitoring of the evaporated water.
    • Feeds chemical AFTER blowdown.
    • Has expansion slots to add additional control, such as chiller loop monitor and cycles of concentration based on incoming makeup water.
    Inputs     Controller  
    Power 120/240 VAC 50/60 HZ Conductivity Range 0-5,000 S (other ranges optional)
    Sensor 4 electrode Conductivity
    ORP combination glass electrode
    Conductivity Accuracy 40 S
    Temperature comp. Automatic Conductivity Resolution 10 S
    Flow switch Dry contact ORP Range -1000 to +1000 mV
    Water Meter Input Two contacting head or open collector. ORP Accuracy 5 mV

    ORP Resolution 1 mV
    Relays Four, 3 Amps @120 VAC Deadband Adjustable
    4-20mA Two, isolated w/-35L Setpoints Direct or Reverse (configurable in the field)

    Feed timer Adjustable
    Sensor/Plumbing   Keypad Numeric
    Pressure 140 psi (9.7 bar) @ 100F (38C) Display Illumin. 128x64 pixel LCD
    Max. Temperature 140F (60C) Ambient Temperature 32-158F (0-70C)
    Min. Flow 1 gpm (3.8 Lpm) Enclosure Rating ABS Plastic
    UL and CSA listed

    *LONWORKS is a registered trademark of Echelon Corporation.