XCMG QAY220 Operation Manual page 8

5-6 Re-reeving winch rope .............................................................................................................. 5-21
5-6-1 Working conditions .............................................................................................................. 5-21
5-6-2 Reeving method ................................................................................................................... 5-23
5-6-3 Installation of the weight ...................................................................................................... 5-27
Chapter 6 Crane electric system ................................................................................................................ 6-1
6-1 Safety control ............................................................................................................................... 6-1
6-2 Operation control ......................................................................................................................... 6-1
6-3 Electric system of operator's cab ............................................................................................. 6-2
6-3-1 Devices in operator's cab .................................................................................................... 6-2
6-3-2 Instrument panel .................................................................................................................... 6-3
6-3-3 Notes on operation ................................................................................................................. 6-6
6-4 Superstructure battery .................................................................................................................. 6-7
Chapter 7 Hydraulic system ....................................................................................................................... 7-1
7-1 Check the level of oil in hydraulic tank ....................................................................................... 7-1
7-2 Hydraulic system description ...................................................................................................... 7-2
7-3 Main winch circuit ....................................................................................................................... 7-3
7-4 Auxiliary winch circuit ................................................................................................................ 7-4
7-5 Slewing circuit ............................................................................................................................. 7-5
7-6 Elevating circuit ........................................................................................................................... 7-6
7-7 Telescoping circuit ....................................................................................................................... 7-6
7-8 Auxiliary circuit ........................................................................................................................... 7-7
7-9 Main valve .................................................................................................................................. 7-7
7-10 Balance valve ............................................................................................................................ 7-7
7-11 Hydraulic oil tank ..................................................................................................................... 7-8
7-12 Specifications ............................................................................................................................ 7-8
7-13 Hydraulic oil description .......................................................................................................... 7-9
Chapter 8 Safety devices ............................................................................................................................ 8-1
8-1 Load moment indicator ................................................................................................................ 8-1
8-1-1 Working principle ................................................................................................................... 8-1
8-1-2 Safety function ....................................................................................................................... 8-1
8-1-3 Logic control function ............................................................................................................ 8-1
8-1-4 Hoist height limit function ..................................................................................................... 8-1
IV
Contents
QAY220 All Terrain Crane Operation Manual
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