PIETRO FIORENTINI Dival 600, Руководство пользователя

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145
DIV
AL 600
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR | TROUBLESHOOTING | REV. A
EN
10.4 - TROUBLESHOOTING TABLES
NOTICE!
See chapter “9 - Maintenance and functional checks” for pictures of the regulator DIVAL 600 and its ac -
cessories.
10.4.1 - TROUBLESHOOTING DIVAL 600 REGULATOR
Failure Possible causes Intervention
No sealing or zero flow rate
Valve seat (2) damaged Replace
Plug (211) damaged Replace
O-ring (202) damaged Replace
O-ring (213) damaged Replace
O-ring (215) damaged Replace
Diaphragm (209) damaged Replace
Dirt or presence of foreign bodies in the
sealing area
Clean
Pumping
Plug rod assembly friction Clean and replace if needed
Blocked anti-pumping valves Clean and replace if needed
Reduced downstream volumes Increase the volume
Downstream pressure increases
on delivery Broken or damaged diaphragm (321) Replace
Broken or damaged diaphragm (209) Replace
Tab. 10.68
10.4.2 - LA SLAM-SHUT VALVE TROUBLESHOOTING
Failure Possible causes Intervention
Slam-shut valve failed to trip Rod (501) locked in opening Clean and reposition if needed
External leak
Broken diaphragm (517) Replace
Downstream pressure (Pd) in -
creases in open valve position
O-ring (521) not sealing Replace
O-ring (523) not sealing Replace
Rod (501) damaged Replace
Downstream pressure (Pd) in -
creases in closed valve position
O-ring (521) not sealing Replace
Rod (501) damaged Replace
Reinforced gasket (528) damaged Replace
Valve seat (102) damaged Replace
Damaged valve seat O-ring (104) Replace
Slam-shut valve failed to trip due
to pressure increase
Broken diaphragm (517) Replace
Slam-shut valve failed to trip due
to pressure decrease
Broken diaphragm (517) Replace
Tab. 10.69