175
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
MAINTENANCE AND FUNCTIONAL CHECKS
|
REV. 00
EN
Step Action
58
Remove the O-ring (37) from the blind flange (4) 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.
59
Unscrew and remove screws (30), locking ring (8), reinforced gaskets (7, 109) and O-ring (93).
NOTICE!
•
Take care that the upper seal does not fall off.
•
If the SB/82 slam-shut valve is fitted, the conical seat replaces the reinforced gasket (109).
60
Remove and replace the O-ring (93) from the reinforced gaskets (7, 109), lubricating it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
61
Position the reinforced gaskets (7, 109) and the locking ring (8).
NOTICE!
If the SB/82 slam-shut valve is fitted, the conical seat replaces the reinforced gasket (109).
62
Insert and fix the screws (30) according to the following tightening torque:
• DN 1”: tab. 9.91
• DN 2”: tab. 9.92
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
63
Fit the blind flange (4).
NOTICE!
During this step, support the blind flange (4).
64
Insert and fix the screws of the lower section (31) according to the following tightening torque:
• DN 1”: tab. 9.91
• DN 2”: tab. 9.92
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
65
Position the control head
inside the regulator body (1) with the indicator slide (16) visible and on axis with the
gas flow direction.
NOTICE!
Take care not to damage the plug profile (5).
66
Insert and fix the screws of the upper section (31) according to the following tightening torque:
• DN 1”: tab. 9.91
• DN 2”: tab. 9.92
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
67
Connect the pneumatic connections between the regulator and the respective control unit, including down-
stream pressure ports.
Tab. 9.144.
Содержание REVAL 182
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