Water Cooled Chiller
The shell and tube evaporator and condenser are according to national standard of pressure vessel to be designed and manufactured, and has been inspected by the Quality Supervision Bureau before ex- factory. The shell-and-tube evaporator is made of high-efficiency threaded copper tubes, and the water quality fouling coefficient is fully considered during design phase, and it is equipped with imported expansion valves, solenoid valves, filter dryers and other refrigeration accessories.
1.Control system functions: directly control the set point and current operating parameters; comprehensively monitor the current working conditions, store operating data, and report faults;
2.System display information: pre-start diagnostic detection; fault alarm information; historical fault records; current operating data, parameter setting values, and related information
3.Expansion function can be added: it can realize centralized monitoring between multiple machines or joint control of several units or connect the units to CCMS system, etc... Customers can add expansion functions on the basis of standard configuration according to actual needs, and add different communication cards to realize different communication functions, and complies with CCMS, BAS communications.
The use of microcomputer controller and PID logic control makes the temperature control more accurate; the programmed recirculation can effectively adjust the energy of the unit to ensure the best operating load and reduce costs.
Touch button operation, LCD backlight, select Chinese or English display; coupled with menu-style interface display, make the operation more convenient and intuitive.
Control system functions: directly control settings and real-time operating parameters, comprehensively monitor current working conditions; store operating data; reflect alarm failures.
The system displays information: pre-start diagnostic testing; fault alarm information; historical fault records; current operating data; parameter setting values; related information.
Expandable functions can be added: it can realize centralized monitoring among multiple units or joint control of several units or connect the units to the CCMS system, etc. According to actual needs, customers can add extended functions on the basis of standard configuration, and add different communication cards to realize different communication functions, and communicate with CCMS, BAS, etc.
Scalable communication protocol: Fiel bus; Lon works; Bacnet RS485; Bacnet Ethernet, IP and Modbus RS485.
Exhaust check valve: to ensure that the compressor exhaust will not flow back to the compressor when it is stopped;
Lack of reverse phase protection: prevent the compressor from running in reverse;
High-efficiency oil separator: protects the compressor's lubrication system and oil supply system to be normal;
Oil heater: heat the lubricating oil in the oil tank when the compressor stops, to avoid lubricating oil foaming when starting;
Heat protection: when the compressor temperature is higher than the normal value, the compressor will be switched on;
Exhaust temperature protection against heat: avoid the compressor's exhaust temperature from being too high;
Safety valve: This valve is installed on the condenser. When the exhaust pressure or condensing pressure is higher than the valve's preset value, the safety valve opens and discharges a part of the refrigerant to prevent abnormal conditions in the system;
High and low pressure switch: use professional pressure sensor to control the high and low pressure of the system, with high control precision and safer system;
Antifreeze switch: prevent the freezing water at the water outlet of the evaporator from freezing;
Over-cut protection: When the current of the external power supply fluctuates or the current in the circuit exceeds the set value, the thermal relay is disconnected to stop the compressor.
Parameter password protection: to ensure the safety of the operating parameters of the unit.
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- Water Cooled Chiller
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