Volvo EC360B - Page 235

Boom up operation
1. Neutral
- Center passage open
- Holding valve closed
2. Joystick signal on(BU)
- Boom1 & Boom2 Spool move to LH side
- Center passge close & pressurize
3. Open load check
- Oil from parallel passage open load check.
4. Holding valve open and supply oil to cylinder
Picture text:
1