hydraulic oil press machine 1. easy operation 2. high adapatability 3. ... boot before, first turn on the power to the machine preheating, in the thermometer pointer to 50-70°C ... close the activities beam, then start the motor, will pull up position to directional control valve, pressure oil (will ... 5-7 seconds will handle in the middle position, pull open the activities beams, again will handle on rising ...