H1 - Dipper control element
H2 - Bucket control element
H3 - “Additional functions” control element
H4 - Intermediate boom control element
H5 - Boom control element
H6 - Equipment supply inlet element
H7 - Slewing control element
H8 - Slewing supply inlet element
H9 - Pressure limiter (calibration 400 bars)
H10 - Pressure limiter (calibration 420 bars)
H11 - Pressure limiter (calibration 180 bars)
H12 - Pressure limiter (calibration 360 bars)
H13 - Pressure limiter (calibration 250 bars)