253
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
60
Insert and secure the locking nuts (33), applying threadlocking glue, according to the tightening torque:
• DN 6”: tab. 9.112
• DN 8”: tab. 9.113
NOTICE!
During this phase, manually compress the spring (54).
64
Unscrew and remove screws (30), locking ring (8), reinforced gasket (7), conical seat (63) and O-ring
(93).
NOTICE!
Take care that the upper seal does not fall off.
65
Remove the O-ring (93) from the reinforced gasket (7) 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.
66
Position the reinforced gasket (7), the conical seat (63) and the locking ring (8).
67
Insert and fix the screws (30) according to the following tightening torque:
• DN 6”: tab. 9.112
• DN 8”: tab. 9.113
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
70
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 (2).
71
Insert and fix the screws (31) according to the following tightening torque:
• DN 6”: tab. 9.112
• DN 8”: tab. 9.113
NOTICE!
Tighten the screws according to the cross diagram in paragraph 9.4.2.2.
72
Insert the pawl (163) into the rod (18).
73
Place the indicator slide (16) in the eyebolt flange (14).
NOTICE!
Check that the pawl (163) is in position 0% in relation to the indicator slide (16).
74
Insert and fasten the position screws (57).
75
Connect the pneumatic connections between the regulator and the respective control unit, including down-
stream
pressure ports.
Tab. 9.153.
WARNING!
Ensure that all parts have been fitted correctly.
Summary of Contents for REVAL 182
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