Chillers with SR-type screw compressors and microprocessor control APPLICATION The chillers are designed for application in the industry as the source of the cold in production process lines of food industry, chemicals, electronics, pharmaceuticals, at processing plants of plastics, in processes of galvanic treatment and for air-conditioning centres of large buildings.   ADVANTAGES - Ideal for industrial installations - High quality components - High efficiency and reliability of working - Easy assembling, operating and servicing - Silent running - Microprocessor control - Possibility of remote control for the chiller - Complete accessories and compact structure - Positioning on vibro-insulators, it does not require foundations and anchor bolts   CONSTRUCTION They are composed of the following main assemblies and functional systems: - Screw compressor with two rotors of assymetric profile - Electric motor - Flexible metal coupling - Horizontal oil separator, which also forms a supporting structure of compressor unit and oil tank - Plate evaporator or shell and tube type - Condenser - possibility to configure with water condenser, air condenser or spray and evaporation one - Liquid separator with accessories - Hydraulic system of lubricating, controlling, cooling etc. - Control and protection system - based on microprocessor controller, equipped with a modem enabling remote control and monitoring chiller working parameters - System of oil cooling, as per individual selection (water, thermo-siphon or by means refrigerant injection) - System of stepless capacity regulation within the range of 11 - 100 % - Check-measure and protecting equipment   TECHNICAL DATA Refrigerating capacity 300 do 3000 kW Refrigerant R717, R404A, R407C, R22 Cooled medium processing water, glycol Temp. of medium after cooling     water +5÷ +15 °C glycol -10÷ +0 °C Cooling step 4÷6 °C Flow of medium 20÷230m3/h Evaporating temperature -15÷ +10 °C (depending on the cooled liquid) Condensing temperature +20÷ +42 °C Supply 3 x 400V/50Hz   CONTROLLER FUNCTIONS OF CONTROL SYSTEM The applied control system enables the user to set parameters easily and to control the work of equipment, and especially it ensures: - Continuous monitoring of equipment working parameters - Optimization of equipment working by means of automatic capacity regulation basing on temperature or evaporation pressure in relation to the limitation of motor current rise above the permissible value - Running diagnostics of equipment working, display of occurring disturbances and emergency states - Possibility of protecting by means of a access password to controller against unauthorised persons - History of alarms (register of 200 latest alarms - it includes time, date and kind of alarm) - Possibility of remote communication and co-operation with automatics systems through industrial networks