380
REV
AL 182
EN
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
TROUBLESHOOTING
|
REV. 00
Failure
Device
Possible causes
Service
Operation
faults
204/A SERIES PILOT
Plug (17) dirty or
worn
Clean and replace if needed
Friction of the diaphragm carri-
er assembly (16)
Align the bore of the dia-
phragm
support (5) with the valve
seat (3)
Worn diaphragms (16)
Replace
Spring (22) collapsed or out of
level
Reposition and replace if
necessary
AC out of class due to unsuita-
ble spring (22)
Replace
SG out of class due to dirty or
worn plug (17)
Clean and replace if needed
No sealing or zero
flow rate
REGULATOR
Reinforced gasket (8) dirty or
damaged
Clean and replace if needed
O-ring (35) not sealing
Clean and replace if needed
Balancing piston O-ring (36) not
sealing
Clean and replace if needed
O-ring seal (42) not sealing
Clean and replace if needed
O-ring (43) not sealing
Clean and replace if needed
P R E - R E G U L A T O R
R31/A
O-ring (18) not sealing
Clean and replace if needed
O-ring (20) not sealing
Clean and replace if needed
Diaphragm (10) damaged
Replace
201/A SERIES PILOT
Dirty or worn plug (17)
Clean and replace if needed
P R E - R E G U L A T O R
R14/A
O-ring (17) not sealing
Clean and replace if needed
O-ring (18) not sealing
Clean and replace if needed
O-ring (20) not sealing
Clean and replace if needed
Diaphragm (10) damaged
Replace
204/A SERIES PILOT
Upper diaphragm (19) dam-
aged
Replace
Dirty or worn plug (17)
Clean and replace if needed
Содержание REVAL 182
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