Technical data: Cylinders:4 Displacement @ 50 Hz m3/h [50Hz] 56 Displacement @ 60 Hz m3/h [60Hz] 67.2 Motor version[1]:1 Motor power (HP):20 Motor power (kW):15 Motor voltage at 50 Hz[2] V/ph/Hz 380-420V/3/50Hz PWS Motor voltage at 60 Hz[2] V/ph/Hz 440-480V/3/60Hz PWS PWS partition:50-50 DOL bridge bars:Standard Capacity control: CC + RSH :100%-75%-50%-25% MRA, maximum operating current at 400V/50Hz and A 38.4 LRA, maximum starting current at 400V/50Hz and A 87.5 LRA, maximum starting current at 400V/50Hz and A 136.2 Frequency min Hz 25 Frequency max[3] Hz 87 Protection device INT69® Diagnose Electric box class protection IP56 Maximum pressure HP bar 30 Maximum pressure LP bar 20.5 Oil type[4] POE32 Oil charge (3/4 of sightglass) l 2.9 Lubrication type Centrifugal Suction valve (SV) inch 1⅝ Discharge valve DV inch 1 ⅛ Net weight kg 132 Max Length mm 550 Max Width mm 405 Maximum height mm 405 Rubber mounts diameter[2] mm 50 Rubber mounts height mm 50 Rubber mounts shore sh 55 Sound power level (-10/45, R404A)[5] dB(A) 78.5 Sound pressure level @ 1m (-10/45, R404A)[5] dB(A) 70.5 Compressor body material Cast Iron [1]Motor version: 1 = high and middle temperature, all refrigerants; 2 = low and middle temperature, all refrigerants; 3 = ECOinside, low temperature, only R134a and R1234ze [2] Others available on request [3] Maximum frequency depends on the working condition: see FSS3 (Frascold selection software) [4] Different kind of oil available on request