389
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
TROUBLESHOOTING
|
REV. 00
EN
10.4.5 - SB/82 SLAM-SHUT VALVE TROUBLESHOOTING
WARNING!
If the built-in slam-shut valve tripped, close the inlet and outlet valves (V1 and V2) of the line before any
other operation and discharge pressure.
Failure
Device
Possible causes
Service
Incorrect release pres-
sure
SB/82 BUILT-IN
SLAM-SHUT VALVE
Incorrect maximum and/or
minimum spring setting
Carry out the calibration
again by adjusting the ring
nuts
Leverages with friction
Clean and lubricate
the levers if needed
replace the pressure switch
PRESSURE SWITCHES
MOD. 100
Springs (11.17) collapsed
Replace
Springs (11.17) out of level
Reposition
Impossible to reset
SB/82 BUILT-IN
SLAM-SHUT VALVE
Incorrect maximum and/or
minimum spring setting
Carry out the calibration
again by adjusting the ring
nuts
The downstream pressure
is not consistent with the
minimum and/or maximum
slam-shut device setting
Adjust
the downstream pressure
Levers broken or chipped
Change the standard box
containing the whole as-
sembly
PRESSURE SWITCHES
MOD. 100
Diaphragm (43) breakage if
min. spring is installed
Replace
Manual release button locked Clean and lubricate
Failure to provide service
SLAM-SHUT VALVE
SB/82 BUILT-IN SLAM-
SHUT VALVE
Stem (6) locked in opening
position
Clean and lubricate
Locked levers
Clean and lubricate
PRESSURE SWITCHES
MOD. 100
Diaphragm breakage (43) if
min. spring is missing
Replace
Содержание REVAL 182
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