The pressure plate cannot rise or press down in manual or automatic
mode:
① Is the motor direction correct: If the motor direction is opposite, please reconnect the two power cords.
② Is the oil pump working properly: Checkwhether there is convection in the oil tank when the oil pump is working. Ifthere is no convection, it proves that the oil pump is damaged.
③ Is the overflow valve (pressure regulating valve) blocked: Loosen the parts
of the overflow valve and clean them carefully. There are small working holes
in the overflow valve. If there are debris in the hydraulic oil, it is easy to block
the small working holes and cause the machine to not work or have no
pressure (Note! The overflow valve is generally not easily damaged, but there
are more blockages).