The ROTOR requires a minimum of 6 Bar - 0.6 MPa - 87 psi.
The ROTOR has its own pressure valve which is set at 4.5 Bar - 0.45 MPa - 65 psi , but the supply pressure must be able to maintain a pressure above this.
If the ROTOR is supplied with a compressor this will reach a maximum pressure of 8 Bar - 0.8MPa - 116psi.
The compressor that Singer Instruments supply with ROTOR's will only recharge when the in-operation pressure drops to 6 Bar. This means that the compressor is not running constantly during operation.
Compressor Assembly - Supplied by Singer Instruments