Commercial nitrogen cylinders are filled at a pressure of maximum 200 bar. Hydraulic accumulators with a precharge pressure exceeding 200 bar can therefore not be filled using these cylinders. With precharge pressures between 100 and 150 bar the potential of the nitrogen cylinders is poorly exploited.

The OLAER nitrogen chargin units allow better utilisation of the nitrogen cylinders and a charging of the accumulators at pressures of up to 400 bar.

The charging unit runs automatically and its precharge pressure is controlled by a contact pressure gauge.

 OSP 763 - Accumulator accessories - Nitrogen charging unit SLG 2

Design

• Integrated hydraulic unit
• Pressure reducer
• Electronic control unit including connecting cable
• Pressure intensifier
• Air/oil cooler
• Connecting hoses

Technical features

• Flow rate: 3 l/min
• Power consumption: 1.5 kW
• Supply voltage: 230 V - 1 - 50 Hz
• Current consumption: 10 A
• Min. N2 inlet pressure : 35 bar
• Max. N2 outlet pressure: 400 bar
• Weight (oil-filled): 69 kg

Connections

• Mains cable: 5m 3 poles with type 12 plug
• Filling hose: 2,5 m to connect the nitrogen cylinder W 24, 32
• Filling hose: 5 m to connect the OLAER VGU (OSP 746) type tester and pressurizer