(1) Within three days of the actual operation of the die casting machine, be sure to pay attention to check whether there is nitrogen leakage, so as to prevent the equipment from being damaged in the nitrogen bottle during transportation.

(2)One week after the actual operation, the first inspection will be conducted. From then on, the inspection will be conducted once a week and then every two months. In case of insufficient pressure, nitrogen should be added in time.

(3)Ways of examining the nitrogen pressure are as follows: close the operation of motor, stop switch calibration, open the pressure relief valve, at the same time, observe the hydraulic pressure of booster oil and 2 speed hydraulic pressure , when the oil pressure falls to zero, the two groups of accumulator nitrogen pressure value equal to the pressure accumulator nitrogen pressure and fast injection accumulator nitrogen pressure .The nitrogen pressure must conform to the standard value in the user manual.