211
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
48
Remove the O-ring (42) from the stem (6) 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.
49
Remove the stem guide (20), the stem (6) and the key (28).
NOTICE!
•
Lubricate the stem surface with silicone grease.
•
The key (28) must be in the correct position in the stem (6)
50
Put the lower cover (4) in place and fix it on the plug guide (2).
NOTICE!
The hole for the passage of the loading pressure must match the similar one on the plug guide.
51
Insert and fix the screws of the lower section (92) according to the following tightening torque:
• DN 10”: tab. 9.98
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
52
Put the diaphragm unit in place (10, 12, 13, 21, 29, 45, 50, 62).
53
Insert and secure the balancing stem guide (11) according to the tightening torque:
• DN 10”: tab. 9.98
NOTICE!
Hold the diaphragm assembly in place and position the spanner in the holes in the upper dia
-
phragm support (13).
54
Position the upper cover (3), taking care to position the indicator stem (18) in the space between the upper
diaphragm support (13) and the balance stem guide (11).
NOTICE!
•
The indicator rod (18) must not obstruct the hole on the upper diaphragm support (13)
•
The flange travel indicator must be visible and perpendicular to the gas flow
55
Place the pilot support screw (98).
56
Insert and fasten the screws (25) with the nuts (26) according to the tightening torque:
• DN 10”: tab. 9.98
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
57
Position the spring (54) and spring supports (34).
58
Insert radial bearing (131) and washer (130).
59
Insert the locking nut (9) according to the tightening torque:
• DN 10”: tab. 9.98
NOTICE!
Check that the spring (54) is properly seated in the centring stop on the plug guide (2).
Содержание REVAL 182
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