382
REV
AL 182
EN
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
TROUBLESHOOTING
|
REV. 00
Failure
Device
Possible causes
Service
Downstream pressure
decreases on
delivery
REGULATOR
No upstream pressure
Check line filter cartridges for
clogging
Plug (5) locked
Clean and check the move-
ments
Dirty O-ring (35)
Clean and replace if needed
Stem guide (20) O-ring frictions
(36)
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
Ice formation
Increase the regulator gas inlet
temperature
Diaphragm (50) damaged
Replace
Stem guide (20) loose
Tighten
P R E - R E G U L A T O R
R31/A
Diaphragm (10) damaged
Replace
201/A SERIES PILOT
Plug (17) damaged
Replace
Diaphragm holder assembly
(16) and plug (17) locked in
shut-off position
Check and clean if necessary
Downstream sensing line ob-
structed
Clean
P R E - R E G U L A T O R
R14/A
Filter (13) clogged
Replace
Reinforced gasket (9) damaged Replace
Diaphragm (10) damaged
Replace
Plug (5) locked during
shut-off
Clean and lubricate
Plug (5) obstructed
Clean
204/A SERIES PILOTS
Plug (17) locked in shut-off
position
Clean and lubricate
Diaphragms (16)
damaged
Replace
Diaphragm holder (16) and plug
(17) assembly locked in open
position
Check and clean if necessary
Valve seat (3) clogged
Clean
Spring (22) collapsed
Replace
Tab. 10.185.
Содержание REVAL 182
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Страница 22: ...22 REVAL 182 EN Use maintenance and warning instructions MEDIUM PRESSURE REGULATOR GENERAL INFORMATION REV 00 ...
Страница 32: ...32 REVAL 182 EN Use maintenance and warning instructions MEDIUM PRESSURE REGULATOR SAFETY REV 00 ...
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