PIETRO FIORENTINI HBC 975, Руководство пользователя

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147
HBC 975
Use, maintenance and warning manual
SLAM-SHUT VALVES | TROUBLESHOOTING | REV. 00
EN
Failure Device Possible causes Service
Unintentional operation
HB/97
O-ring (40) not sealing Clean and replace if needed
O-ring (36) not sealing Clean and replace if needed
Upper O-ring (39) not sealing Clean and replace if needed
No sealing
of the "U" ring (63)
Clean and replace if needed
Upper O-ring (43) not sealing Clean and replace if needed
Upper O-ring (62) not sealing Clean and replace if needed
Upper O-ring (42) not sealing Clean and replace if needed
R44/SS
Lower diaphragm (16) not
sealing
Clean and replace if needed
O-ring (28) not sealing Clean and replace if needed
O-ring (29) not sealing Clean and replace if needed
O-ring (26.1) not sealing Clean and replace if needed
VS/FI Lack of Pad seal (3) Clean and replace if needed
VALVE 3/2
Gasket (16) locked Clean and replace if needed
Outer O-rings (46) not
sealing
Clean and replace if needed
O-ring (47) not sealing Clean and replace if needed
O-ring (48) not sealing Clean and replace if needed
Downstream pressure
increase with slam-
shut device closing
HB/97
Reinforced gasket (8) dirty or
damaged
Clean and replace if needed
Upper O-ring (39) not sealing Clean and replace if needed
Plug profile (71) damaged Replace
O-ring (88) not sealing Clean and replace if needed
O-ring (87) not sealing Clean and replace if needed
HP2/2
Upper O-ring (21) not sealing Clean and replace if needed
Damaged seat profile (6) Replace
Pad (12) dirty or
damaged
Clean and replace if needed
Upper O-ring (24) not sealing Clean and replace if needed
Tab. 10.73.