379
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
TROUBLESHOOTING
|
REV. 00
EN
10.4 - TROUBLESHOOTING TABLES
NOTICE!
Refer to chapter 9 “Maintenance and functional checks” for the pictures of the REVAL 182 regulator and
its accessories.
10.4.1 - TROUBLESHOOTING REGULATOR REVAL 182
WARNING!
If the built-in slam-shut valve has tripped, close the upstream and downstream shut-off valves (V1 and V2)
of the line before any operation and relieve the pressure.
Failure
Device
Possible causes
Service
Operation
faults
REGULATOR
Dirty or worn reinforced gasket (7) Clean and replace if needed
O-ring (35) friction
Lubricate and replace if neces-
sary
Stem guide O-ring (36) frictions
Lubricate and replace if neces-
sary
I/DWR (52) frictions
Lubricate and replace if neces-
sary
I/DWR (51) friction
Lubricate and replace if neces-
sary
Breakage of the diaphragm (50) Replace
SG out of class due to dirty or
worn reinforced gasket (7)
Clean and replace if needed
PRE-REGULATOR
R31/A
Reinforced gasket (9) dirty or
damaged
Clean and replace if needed
Plug guide ring (8) worn
Replace
201/A SERIES PILOT
Plug (17) dirty or
worn
Clean and replace if needed
Friction of the diaphragm carri-
er assembly (16)
Centre the diaphragm carrier
assembly on the shaft
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
Worn main diaphragm (42)
Replace
PRE-REGULATOR
R14/A
Dirty or worn plug (5)
Clean and replace if needed
Plug guide ring (8) worn
Replace
Содержание REVAL 182
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