Moog D633-A Series - Page 5

Table of Contents
© Moog GmbH User Manual "D633-A Series" (CA80942-001; Version 1.0, 12/08) iii
9 Start-up.....................................................................................................45
9.1 Preparations............................................................................................................................... 47
9.2 Start-up of the valves ................................................................................................................ 47
9.3 Filling and flushing the hydraulic system............................................................................... 48
9.4 Start-up of the hydraulic system.............................................................................................. 49
9.4.1 Venting the hydraulic system ....................................................................................... 49
10 Operation .................................................................................................51
10.1 Preparations for operation ....................................................................................................... 52
10.2 Operation of the valve............................................................................................................... 53
10.3 Shutting down the valve ........................................................................................................... 53
11 Service .....................................................................................................55
11.1 Removing the valves................................................................................................................. 57
11.1.1 Tools and materials required........................................................................................ 57
11.1.2 Procedure..................................................................................................................... 57
11.2 Maintenance............................................................................................................................... 58
11.2.1 Checking and replacing the port O-rings...................................................................... 58
11.2.1.1 Tools and materials required................................................................... 58
11.2.1.2 Checking and replacing the O-rings ........................................................ 58
11.3 Troubleshooting ........................................................................................................................ 59
11.3.1 Leaks............................................................................................................................ 59
11.3.1.1 Leak at the valve connecting surface ...................................................... 59
11.3.1.2 Leak at the linear force motor screw plug ............................................... 59
11.3.2 No hydraulic response by the valve ............................................................................. 60
11.3.3 Instability of the external control loop ........................................................................... 60
11.4 Repair ......................................................................................................................................... 61
11.4.1 Contact persons for repairs.......................................................................................... 61
12 Disposal ...................................................................................................63
13 Accessories and Spare Parts.................................................................65
13.1 Accessories ............................................................................................................................... 65
13.2 Spare parts................................................................................................................................. 66
14 Index.........................................................................................................67
15 Appendix..................................................................................................75
15.1 Abbreviations, symbols and identification letters ................................................................. 75
15.2 Additional literature................................................................................................................... 77
15.2.1 Moog publications ........................................................................................................ 77
15.3 Quoted standards...................................................................................................................... 77
15.3.1 DIN ............................................................................................................................... 77
15.3.2 DIN EN ......................................................................................................................... 77
15.3.3 DIN EN ISO..................................................................................................................78
15.3.4 EN ................................................................................................................................ 78
15.3.5 IEC ............................................................................................................................... 78
15.3.6 ISO ............................................................................................................................... 78
15.3.7 MIL ............................................................................................................................... 78
15.4 Quoted directives ...................................................................................................................... 78