237
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
TROUBLESHOOTING
|
REV. 00
EN
10.4 - TROUBLESHOOTING TABLES
NOTICE!
Refer to chapter 9 “Maintenance and functional checks” for the pictures of the ASX 176 regulator and its
accessories.
10.4.1 - TROUBLESHOOTING REGULATOR ASX 176
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
I/DWR (52) friction
Lubricate and replace if neces-
sary
O-ring (48) friction
Lubricate and replace if neces-
sary
Plug locked (9)
Clean and replace if needed
Breakage of the diaphragm (50) Replace
Transfer hole (19) obstructed
Clean
O-ring (46) friction
Lubricate and replace if neces-
sary
O-ring (45) friction
Lubricate and replace if neces-
sary
O-ring (44) friction
Lubricate and replace if neces-
sary
O-ring (47) friction
Lubricate and replace if neces-
sary
SG out of class due to dirty or
worn reinforced gasket (7)
Clean and replace if needed
R14 PRE-REGULATOR
Dirty or worn plug (5)
Clean and replace if needed
Guide ring (8) worn
Replace
200/A SERIES PILOT
Dirty or worn plug (17)
Clean and replace if needed
Diaphragm holder assembly
friction (16)
Centring the movement of the
bore, assembly and 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
Summary of Contents for ASX 176
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