241
ASX 176
Use, maintenance and warning instructions
HIGH PRESSURE REGULATOR
|
TROUBLESHOOTING
|
REV. 00
EN
Failure
Device
Possible causes
Service
Downstream pressure
increases on
delivery
PM/176
Reinforced gasket (7) dirty or
damaged
Clean and replace if needed
Ice between reinforced gasket (7)
and plug (9)
Clean
O-ring (43) not sealing
Clean and replace if needed
O-ring (48) not sealing
Clean and replace if needed
Plug locked (9)
Clean
Soiling between reinforced gasket
(7) and plug (9)
Clean
Transfer hole (19) obstructed
Clean
I/DWR friction (52)
Lubricate and replace if
necessary
Spring (54) collapsed
Replace
200/A SERIES PILOT
Plug (17) damaged
Replace
Diaphragm holder and plug
assembly (17) locked in open
position
Check and clean if neces-
sary
Plug spring (21) collapsed
Replace
Downstream sensing line obstruct-
ed
Clean
Downstream pressure
decreases on
delivery
PM/176
Breakage of the diaphragm (50)
Replace
O-ring (48) not sealing
Clean and replace if needed
I/DWR friction (52)
Lubricate and replace if
necessary
Plug (9) locked
Clean
No upstream pressure
Check clogging of line filter
cartridges
Ice formation
Increasing the gas tempera-
ture at the regulator inlet
O-ring (48) not sealing
Clean and replace if needed
200/A SERIES PILOT
Plug (17) damaged
Replace
Diaphragm holder assembly (16)
and plug (17) locked in shut-off
position
Check and clean if neces-
sary
Downstream sensing line obstruct-
ed
Clean
Downstream pressure
increases zero flow
rate
PM/176
Downstream O-ring (48) not seal-
ing
Clean and replace if needed
Upstream O-ring not sealing (48)
Clean and replace if needed
No monitor tripping
PM/176
Downstream O-ring (48) not seal-
ing
Clean and replace if needed
I/DWR friction (52)
Lubricate and replace if
necessary
Plug (9) locked
Clean
Tab. 10.115.
Summary of Contents for ASX 176
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