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  • 1 to 3 ton Portable Chillers - Accuchiller EQ Series
  • 5 to 14 ton Portable Chillers - Accuchiller SQ Series
  • 15 to 60 ton Portable Chillers - Accuchiller LQ Series
• Central Chillers
  • Centrifugal Compressor (TC Series - 60 to 540 tons)
    • TC Series Central Chiller Energy Savings Calculator
    • Air Cooled vs. Water Cooled Chillers Operating Costs
    • Differences Between Industrial Process Chillers and HVAC Chillers
    • Powerful PLC Control System
    • Operator Control Station (OCS)
  • Rotary Screw Compressor (MX Series - 50 to 500 tons)
    • Allen-Bradley CompactLogix PLC Controller
  • Scroll Compressor (TS Series - 20 to 100 tons)
    • Operator Control Station (OCS)
  • Outdoor Central Chillers (PA Series - 10 to 490 tons)
• Cooling Towers
  • FT Series Cooling Towers - 38 to 120 tons
  • FC Series Cooling Towers - 100 to 240 tons
• Adiabatic Fluid Coolers
• Temperature Controllers
  • Aquatherm RA Series - Water
    • Microprocessor Controller
  • CRA Series - CD & DVD
  • Oiltherm RO Series - Hot Oil
  • Vactherm RV Series - Positive Negative Pressure
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• Additional Products
  • Water Treatment Systems
  • Filtration Equipment
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Allen-Bradley CompactLogix PLC Controller

Operational Display

Powerful integrated control for MX Series Central Chillers, CompactLogix PLCs combine a controller, operator interface, I/O and networking capability into one seamless solution. Clear language text display and graphic representation of unit components on a Maple Systems color touch screen interface allow for quick and easy understanding of unit operation. Users can view system conditions, input operating parameters and make control adjustments from a single interface point.

Display

• Compressor refrigerant discharge pressure and temperature
• Compressor refrigerant suction pressure, temperature, and superheat temperature
• Compressor running hours
• Compressor slide valve position (or % unloading)
• Condenser water inlet and outlet temperatures
• Coolant type (user input for water, % ethylene glycol, % propylene glycol)
• Electronic expansion valve position (% open)
• Evaporator water inlet and outlet temperatures
• Process water set point temperature

Alarms

• Compressor motor overload
• Evaporator freeze protection
• Evaporator low flow
• Oil low level
• Power loss of phase
• Process supply water above or below high temperature alarm set point
• Refrigerant high and low pressures
• Status banner of start-up and shut-down sequences

Safeties

• Compressor motor high temperature
• Compressor motor overload
• Compressor motor reverse rotation
• Evaporator freeze protection
• Evavporator low flow
• Oil low level
• Power loss of phase
• Refrigerant high and low pressures

Control Functions

• Alarm history occurrence with reset date and time stamp
• Compressor anti-recycle timer
• Compressor enable/disable
• Condenser water regulating valve control capability
• Coolant type user input (water, % ethylene glycol, % propylene glycol)
• Internal calendar and clock
• Password protection of adjustable parameters (user and factory settable)
• Process water high and low temperature alarms (adjustable as offset from set point or absolute)
• Remote alarm contact
• Remote start/stop
• Single point chilled water and cooling tower system enable
• Single point selecton between English and metric units of measure