The electric contact pressure gauge of the oil supply system is used to monitor the oil pressure of the pipeline. When the oil pressure of the high-pressure system exceeds the "normal oil pressure value" (the pressure value is set on-site) for an instant, the motor can be started. The low-pressure system has two oil pump devices, one is working and the other is in standby. The two oil pump devices can be controlled by a switch. In the working process, when the pressure displayed by the electric contact pressure gauge is lower than the "normal oil pressure value", the standby pump is automatically started. If the system pressure does not rise after the standby pump is turned on, and continues to fall, when it drops to the "low oil pressure value" (the pressure is set on site), an alarm signal will be issued and the motor will be stopped
2. An oil flow signal generator is installed at the outlet of the oil supply system to monitor the oil flow in the pipeline. When the oil flow in the pipeline is small or the flow is cut off (such as the oil cannot be pumped or the oil circuit is blocked), it will send out Alarm signal and stop the mill.

The filter element of the double cylinder filter can be stopped online to replace the filter element without affecting the normal operation of the equipment. The filter element is made of 304SS, the working pressure is small, and the flow rate of the filter medium is fast
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