Eaton Hydrowa Instruction Manual

Instruction ManualPage 126.5 Filling the cylinder with oil and release air from the cylinderFilling the cylinder with oilEnsure the correct hydraulic medium is used according to the specifications ofthe cylinder. When using the wrong type of oil, seals of the cylinder can bedamaged, this can result in a leaking cylinder.Only qualified personnel or Eaton personnel should fill with oil, orrelease air from the cylinder.How to release air from the cylinderBefore releasing air from the cylinder, make sure the cylinder is not pressurizedin any circumstances. The air bleed should be pointing upwards when thecylinder is positioned horizontal. The piston rod must be in fully retractedposition.1. Open the air bleed at the piston rod side or the cylinder.2. Make sure every hose or pipe is connected as it should be connected.3. Set-up the hydraulic system and start it up. Set the relieve valve to aminimum pressure.4. Extend the piston rod slowly with no pressure built-up. Keep extendinguntil there is oil / foam coming out of the air valve. (Cylinders that goover-centre must be air-released before mounting in the construction!)5. Shut down the system and close the air valve.6. Depressurise the system before opening the air valve at the lower sideof the cylinder.7. Start up the hydraulic system.8. Retract the cylinder slowly with no pressure built-up. Keep retractinguntil there is oil / foam coming out of the air valve.9. Shut down the system and close the air valve.10. Retest the cylinder by extending and retracting the piston rod until it’srunning smoothly.