POWERCIATTM LX Water chillers d esCRiptionoFthemainComponents ■ Compressors ■ Connect Touch control module - Twin-screw semi-hermetic type - User interface with 4.3-inch - 2 screws fitted on ball and roller bearings touchscreen - Continuous powerCTRL - Intuitive, user - friendly - Built-in electric motor, cooled by intake gases navigation using icons - Integral electronic protection of the motor against thermal - Clear text display of and electrical overloads information available in 9 - Monitoring of rotation direction, absence of phase, over and languages (F-GBD- NL-E-I- under voltage, and power supply failure P-RU +Chinese) - Monitoring of lubrication under differential pressure - Built-in oil filter Internal pressure surge valve and valve to prevent reverse The electronic control module - rotation during shutdown phases performs the following main functions: Monitoring of maximum head pressure - regulation of the chilled water temperature (at the return or - Oil separator with integrated silencer to reduce pulses from at the outlet) - the discharged gas - regulation of the water temperature based on the outdoor Star-delta start limiting the in-rush current temperature (water law) - - regulation for low temperature energy storage ■ Shell and tube evaporator - second setpoint management High performance glandless technology - complete maangement of compressors with start-up - Copper tube bundle with internal and external grooves sequence, timer and operating time balancing - 19-mm thermal insulation - self-regulating and proactive functions with adjustment of - Victaulic type coupling the control to counter parameter drift - Maximum pressure, water side, of 10 bar (21 bar as option) - i n-series staged powerCTRL system on the compressors - according to the thermal requirements ■ Condenser - management of compressor short-cycle protection air-cooled exchanger, all-aluminium micro-channel coil - frost protection (exchanger heater option) - propeller fans with composite blades offering an optimised - phase reversal protection - profile, variable speed (HE and XE versions) - management of occupied/unoccupied modes (according to motors – IP 54, class F the time schedule) - - compressor and pump operating time balancing ■ Refrigerating accessories - management of the machine operating limit according to - Dehumidifier filters with rechargeable cartridges outdoor temperature - hygroscopic sight glasses - sound level reduction device (night mode according to the - electronic expansion valves user programme) with limitation of compressor capacity and - service valves on the liquid line fan speed - diagnosis of fault and operating statuses ■ Control and safety instruments management of a fault memory allowing a log of the last 50 - - low and high pressure sensors incidents to be accessed, with operating readings taken - safety valves on refrigerant circuit when the fault occurs - water temperature control sensors Blackbox memory - - evaporator antifreeze protection sensor master/slave management of the two machines in parallel - - factory-fitted evaporator water flow controller with operating time balancing and automatic changeover if a fault occurs on one machine ■ Electrical cabinet weekly and hourly time schedule for the machine, including Electrical cabinet protection rating: IP 44 (IP 54 optional) - - 16 periods of absence - A connection point without neutral for sizes 808 to 3028 pump standby based on demand (energy saving) - - Two connection points without neutral for sizes 3428 to 4608 calculation of the water flow rate and operating pressure (one connection point optional) - (hydraulic module version) - front-mounted main safety switch with handle display of all machine parameters (3 access levels, User/ - - control circuit transformer Maintenance/Factory, password-protected): temperature, - 24 V control circuit setpoints, pressures, water flow rate (hydraulic version), - fan and compressor motor circuit breaker runtime. - fan and compressor motor contactors display of trend curves for the main values - - Connect Touch microprocessor-controlled electronic control storage of maintenance manual, wiring diagram and spare - module parts list. - wire numbering - marking of the main electrical components ■ Chassis Frame made from RAL 7035 light grey & RAL 7024 graphite grey painted panels CATALOGUE 2021 459 459