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Question:

Bending machine pressure upward pressure down no, why is this?

Bending machine pressure upward pressure down no, why is this?

Answer:

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3, cartridge valve or the main spool was stuck;
1, the proportion of electromagnetic coil voltage does not meet the requirements or proportional relief valve of the electromagnetic coil is not fully available;
2, three-phase power phase modulation, resulting in motor reversal;

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