56
3.3.5
Hydraulic failure safety devices
If there is an accidental failure in the hydraulic piping that supplies the
basket lifting circuit
,
the lifting circuit hydraulic system has the following safety devices (ref. Point 5.10.2 UNI
EN280):
•
RIGID PIPING appropriately sized connecting with the safety valve block
•
A special electrical PILOT-OPERATED CHECK VALVE is connected directly to the
cylinder to prevent uncontrolled descent of the basket from any height, thus avoiding
dangerous situations. This valve has also a WIRE EMERGENCY CONTROL located on
the ground, to be used in case of emergency.
•
A COMPENSATING VALVE that limits the basket descent in the event the rigid supply pipe
is broken. The device is always functioning during normal machine operation.
!
Proceed as described below to restore the machine to normal operating conditions:
1.
repair the damaged hydraulic hose and/or connections
Summary of Contents for BiBi 850 HE
Page 6: ...5 Chapter 1 General information...
Page 10: ...9 1 6 Performances H I A B L F E C G...
Page 19: ...18 Chapter 2 Safety information...
Page 24: ...23...
Page 25: ...24 2 3 2 Warning command danger identification and instruction signs...
Page 40: ...39 Chapter 3 Machine Description...
Page 41: ...40 3 1 Structure of the machine 2 4 5 6 7 9 10 11 13 14 19 27 28 15 18...
Page 42: ...41 View from A 20 22 21 23 24...
Page 43: ...42 12 8 25 16...
Page 44: ...43 17 2 26...
Page 45: ...44 3...
Page 56: ...55...
Page 59: ...58 Chapter 4 Instructions for use...
Page 68: ...67...
Page 69: ...68 For more information refer to Engine Use maintenance manual...
Page 71: ...70...
Page 72: ...71 For more information refer to Engine Use maintenance manual...
Page 91: ...90 Chapter 5 Emergency procedures...
Page 94: ...93 Chapter 6 Maintenance...
Page 105: ...104 Electrical panel casing Battery 1...
Page 116: ...115...
Page 117: ...116...
Page 118: ...117...
Page 119: ...118...
Page 120: ...119...
Page 123: ...122...
Page 124: ...123...
Page 125: ...124...
Page 133: ...132...
Page 136: ...135 HATZ ENGINE...
Page 137: ...136...
Page 138: ...137...
Page 139: ...138 Chapter 7 Demolition...
Page 141: ...140 APPENDICES...
Page 142: ...141 Appendix 1 Declaration of conformity...
Page 144: ...143 MANDATORY ROUTINE INSPECTIONS Date Observations Seal Signature...
Page 157: ...156 Appendix 4 Hydraulic diagram Appendix 5 Circuit diagram...