FLENDER Oil supply system; Cooling unit with ext. pump; Type: OLOO, Size: 4; Coolant: air; Installation: Base frame, Steel; Oil flow rate: acc. to external pump: min. 20 l/min, max. 250 l/min; Max. working pressure: 16 bar; Nominal fan speed: 1200 1/min; Line voltage: 400 V; Line frequency: 50 Hz; Degree of protection: IP55; Motor efficiency class: IE2; Rated power supply: Fan motor: 0.25 kW at 50 Hz;