343
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
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MAINTENANCE AND FUNCTIONAL CHECKS
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REV. 00
EN
Step Action
19
APPLICABLE TO DN 4” ONLY
Remove the I/DWR rings (76) from the plug guide (70) and replace it, taking care to lubricate it with synthetic
grease.
NOTICE!
Before inserting the I/DWR rings, clean the retaining slots with a cleaning solution.
20
Remove the O-ring (88) from the plug (71) and replace it, taking care to lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
21
While keeping the nut (69) in place, unscrew and remove the lock nut (9).
WARNING!
By unscrewing the lock nut (9), the spring (80) is released.
22
Remove the radial bearing (30).
23
Remove the spring support (34) and the spring (80).
24
While keeping the nut (69) in place, unscrew and remove the balancing piston guide (11).
25
Remove the balancing piston (15) from the balancing piston guide (11).
26
Remove the O-rings (36, 43) from the balancing piston guide (11) and replace them, taking care to lubricate
them with synthetic grease.
NOTICE!
Before inserting the replacement O-rings, clean the retaining slots with a cleaning solution.
27
Fit the balancing piston (15) from the balancing piston guide (11).
28
Take out the piston (65).
29
Remove the U-shaped ring (63) from the bush (65) and replace it, taking care to lubricate it with synthetic
grease.
NOTICE!
•
Before inserting the replacement U-ring, clean the retaining slots with a cleaning solution.
•
The concave part must face the flange (73).
30
Remove the I/DWR ring (64) from the piston (65) and replace it, taking care to lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement I/DWR ring, clean the retaining slots with a cleaning solution.
31
Take out the nut (69).
32
APPLICABLE TO DN 6” - 10” ONLY
Remove the spacer (19).
33
Undo and remove the screws (27) together with the washer (137).
34
Remove the flange (73).
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 ...
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