How to fill hydraulic oil with electro-hydraulic thruster

At the factory, the electric hydraulic thruster has been loaded with hydraulic oil according to the regulations. If the driver is stored for too long (more than 6 months), please unscrew the plug before use to check the oil level is correct. If the oil level can not reach the specified position, the hydraulic oil should be added to the specified position, otherwise the electric hydraulic thruster can not work normally. Hydraulic oil grades can use standard hydraulic oil, filled hydraulic oil can not contain impurities or dirt (should be filtered). When filling hydraulic oil, the push rod should be slowly pushed up and down several times to discharge the gas in the hydraulic cylinder and ensure refueling.
Note: Electric hydraulic thrusters must be grounded reliably according to electrical specifications! Note: When wiring, cut off the power supply, and put a "someone is working, do not turn off" sign at the power switch. Until the wire ends. When connecting, remove the junction box of the electric hydraulic driver (the reverse side is the wiring diagram), and the three-phase power line (phase sequence is not required) and the ground line as required. Cover the junction box and tighten the screws. Note: Electric hydraulic thrusters are IP65 protected. The cable shall be packed in a sealed box (provided by the user).